CN214280100U

CN214280100U - Lithium battery with multifunctional protection

Info

Publication number: CN214280100U
Application number: CN202023287667.4U
Authority: CN
Inventors: 彭满
Original assignee: Individual
Current assignee: Zhang Xianxing
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-24
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a lithium cell with multi-functional protection, including lithium cell body and protective housing. Has the advantages that: when an external circuit short circuit occurs, the current is rapidly increased, the current flowing through the enameled coil is rapidly increased, according to the electromagnetic induction principle, the enameled coil generates electromagnetic force for moving the magnet strip outwards, so as to drive the magnet strip to move leftwards, thereby driving the spring to compress and driving the conducting strip to separate from the connecting sheet and the conducting post, thereby completing the disconnection of the circuit, avoiding the current from burning the lithium battery body, thereby avoiding the phenomenon of bulge explosion caused by short circuit of the lithium battery body, being safer and more reliable to use, after the current returns to normal, the spring rebounds to push the conducting strip to reset, the connecting strip and the conducting post are connected, can accomplish the recovery, can continue to use, the setting up of conducting strip, enameled coil, magnet strip, guide bar, spring, connection piece and conducting post has protected lithium cell body safe in utilization under the short circuit condition, has improved the security.

Description

Lithium battery with multifunctional protection

Technical Field

The utility model relates to a lithium cell technical field particularly, relates to a lithium cell with multi-functional protection.

Background

The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery, namely a lithium ion battery and a lithium ion polymer battery, the inventor of the lithium battery is edison, and the lithium metal has very high requirements on environment because the chemical characteristics of the lithium metal are very active, so that the lithium battery is not applied for a long time, and with the development of microelectronic technology at the end of the twentieth century, miniaturized equipment is increasingly increased, and very high requirements on a power supply are provided, and the lithium battery enters a large-scale practical stage.

Traditional lithium cell inserts and uses in the circuit, often can take place because the circuit short circuit leads to the occurence of failure of lithium cell explosion or then can bulge, cause great economic loss for the user, threaten life safety even, can further improve, and simultaneously, the plastic casing has been cup jointed in traditional lithium cell outside, although play the guard action, however, the plastic casing has led to the heat dissipation type of lithium cell not strong, and in case at the heat dissipation of plastic casing surface trompil, again can lead to protective housing waterproof performance to reduce, the lithium cell receives the problem of corruption easily, also can further make the improvement.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a lithium cell with multi-functional protection possesses short-circuit protection, safe in utilization, waterproof, prevents the extrusion, dispels the heat good advantage, and then solves the problem among the above-mentioned background art.

(II) technical scheme

For realizing above-mentioned short-circuit protection, safe in utilization, waterproof, prevent the extrusion, dispel the heat good advantage, the utility model discloses a concrete technical scheme as follows:

a lithium battery with multifunctional protection comprises a lithium battery body and a protective shell, wherein the protective shell is sleeved on the outer side of the lithium battery body, a cathode contact piece is installed on the top surface of the lithium battery body, a sleeve is sleeved between the lithium battery body and the protective shell on the outer side of the cathode contact piece, a conductive column is welded on the top surface of the cathode contact piece, a connecting piece is fixedly connected above the conductive column in a penetrating manner and penetrates through the protective shell, conductive pieces are arranged on one sides of the conductive column and the connecting piece, a guide rod is connected on one side surface of the sleeve in a penetrating manner, one end of the guide rod is fixedly connected with the conductive piece, a spring is sleeved between the conductive piece and the inner wall of the sleeve on the outer side of the guide rod, an insulating rod is connected on one side surface of the sleeve in a penetrating manner and is fixedly connected with the conductive piece, a magnet strip is fixedly and transversely connected with the other end of the insulating rod, and an enameled coil is sleeved on the outer side of the magnet strip, and the enameled coil is fixedly connected with the inner wall of the protective shell through the fixing ring.

Further, the protective housing outer wall runs through to be pegged graft and has the conducting strip, and conducting strip one end and lithium cell body outer wall butt to handing-over department between conducting strip and the protective housing is sealed through sealed glue.

Furthermore, the enameled coil is connected with the working circuit in parallel, and the number of turns of the enameled coil is not less than 30.

Furthermore, the guide rod is made of insulating materials and is of a cylindrical structure.

Furthermore, the connecting sheet, the conducting sheet and the conducting post are all made of copper, and the length of the conducting sheet is far larger than the vertical distance between the connecting sheet and the conducting post.

Furthermore, the heat conducting fins are provided in plurality and are made of copper sheets.

(III) advantageous effects

Compared with the prior art, the utility model provides a lithium cell with multi-functional protection possesses following beneficial effect:

(1) the utility model discloses a conducting strip, the enameled coil, the magnet strip, the guide bar, a spring, the connection piece with lead electrical pillar, when taking place external circuit short circuit, the electric current increases rapidly, the electric current in the enameled coil of flowing through increases rapidly, according to the electromagnetic induction principle, the enameled coil produces the electromagnetic force of outside removal magnet strip, thereby drive the magnet strip and move left, thereby drive the spring compression, drive conducting strip and connection piece and lead electrical pillar separation, thereby accomplish the circuit connection disconnection, avoid electric current to burn out lithium cell body, thereby the phenomenon of the bulge explosion that lithium cell body produced because of the short circuit has been avoided, use safe and reliable more, after the electric current resumes normally, the spring rebounds, promote the conducting strip and reset, switch-on connection piece and lead electrical pillar, can accomplish and resume, can continue to use, the conducting strip, the enameled coil, the magnet strip, the guide bar, The arrangement of the spring, the connecting sheet and the conductive column protects the use safety of the lithium battery body under the condition of short circuit, and the safety is improved.

(2) The utility model discloses a conducting strip and protective housing, the protective housing is made by rigid plastic structure, it is not fragile, protect lithium cell body not receive the extrusion destruction, and simultaneously, there is the conducting strip at the surface through connection of protective housing, with the lithium cell body butt, the heat that lithium cell body produced transmits the external world through the conducting strip, thereby guarantee the radiating efficiency, and simultaneously, through sealed glue sealing connection between conducting strip and the protective housing, make the protective housing improve waterproof nature when possessing the heat dissipation function, the harm that lithium cell body shell received rainwater erosion has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lithium battery with multifunctional protection according to the present invention;

fig. 2 is a front view of a lithium battery with multifunctional protection according to the present invention;

fig. 3 is an external structural schematic diagram of a lithium battery with multifunctional protection provided by the present invention.

In the figure:

1. a protective shell; 2. a lithium battery body; 3. sealing glue; 4. a heat conductive sheet; 5. a sleeve; 6. connecting sheets; 7. a conductive sheet; 8. a guide bar; 9. an enameled coil; 10. a magnet bar; 11. a fixing ring; 12. an insulating rod; 13. a spring; 14. a conductive post; 15. a cathode and an anode contact.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a lithium cell with multi-functional protection.

Referring now to the drawings and the detailed description, as shown in fig. 1-3, a lithium battery with multi-functional protection according to an embodiment of the present invention comprises a lithium battery body 2 and a protective shell 1, wherein the protective shell 1 is sleeved outside the lithium battery body 2, and a negative and positive electrode contact piece 15 is installed on the top surface of the lithium battery body 2, which is a common lithium battery structure and will not be described herein in any more detail, and a sleeve 5 is sleeved outside the negative and positive electrode contact piece 15 and between the lithium battery body 2 and the protective shell 1, a conductive column 14 is welded on the top surface of the negative and positive electrode contact piece 15, and a connecting piece 6 is fixedly connected above the conductive column 14 through the protective shell 1, and a conductive piece 7 is disposed on one side of the conductive column 14 and the connecting piece 6, a guide rod 8 is connected through the surface of one side of the sleeve 5, the guide rod 8 is slidably connected with the sleeve 5, and one end of the guide rod 8 is fixedly connected with the conductive piece 7, and the spring 13 is sleeved between the conducting strip 7 and the inner wall of the sleeve 5 at the outer side of the guide rod 8, the sleeve 5 is made of plastic, the insulating rod 12 is penetrated and connected with one side surface of the sleeve 5 between the guide rods 8, one end of the insulating rod 12 is fixedly connected with the conducting strip 7, the other end of the insulating rod 12 is fixedly and transversely connected with the magnet strip 10, the enameled coil 9 is sleeved at the outer side of the magnet strip 10, and the enameled coil 9 is fixedly connected with the inner wall of the protective shell 1 through the fixing ring 11, when an external circuit short circuit occurs, the current is rapidly increased, the current flowing through the enameled coil 9 is rapidly increased, according to the electromagnetic induction principle, the enameled coil 9 generates electromagnetic force for moving the magnet strip 10 outwards, thereby driving the magnet strip 10 to move leftwards, thereby driving the spring 13 to compress, driving the conducting strip 7 to be separated from the connecting sheet 6 and the conducting column 14, thereby completing the circuit connection disconnection, and avoiding the current from burning the lithium battery body 2, thereby avoided lithium cell body 2 because the phenomenon of the bulge explosion that the short circuit produced, use safe and reliable more, electric current resumes normal back, spring 13 kick-backs, promote conducting strip 7 and reset, switch-on connecting piece 6 and lead electrical pillar 14, can accomplish the recovery, can continue to use, conducting strip 7, enameled coil 9, magnet strip 10, guide bar 8, spring 13, connecting piece 6 and lead the setting of electrical pillar 14 and protected lithium cell body 2 safety in utilization under the short circuit condition, the security has been improved.

In one embodiment, 1 outer wall of protective housing runs through to peg graft there is conducting

strip

4, and 4 one ends of conducting strip and 2 outer wall butts of lithium cell body, and handing-over department between conducting strip 4 and the protective housing 1 is sealed through sealed glue 3, protective housing 1 is made by rigid plastic structure, it is not fragile, protect lithium cell body 2 not receive the extrusion destruction, and simultaneously, there is conducting strip 4 at the surperficial through connection of protective housing 1, with 2 butts of lithium cell body, the heat that lithium cell body 2 produced transmits the external world through conducting strip 4, thereby guarantee the radiating efficiency, and simultaneously, through sealed glue 3 sealing connection between conducting strip 4 and the protective housing 1, make protective housing 1 improve waterproof nature when possessing the heat dissipation function, the harm that 2 shells of lithium cell body received rainwater erosion has been reduced.

In an embodiment, the enameled coil 9 is connected in parallel with the working circuit in a common connection manner, which is not described herein, and the number of turns of the enameled coil 9 is not less than 30, when the current is too large, the force generated by the enameled coil 9 acting on the magnet strip 10 is greater than the elastic force of the spring 13, so as to ensure that the conducting strip 7 can be driven to leave the connecting sheet 6 and the conducting column 14.

In one embodiment, the guiding rod 8 is made of an insulating material, and the guiding rod 8 has a cylindrical structure to avoid electric conduction.

In one embodiment, the connecting pad 6, the conductive sheet 7 and the conductive column 14 are made of copper, and the length of the conductive sheet 7 is much longer than the vertical distance between the connecting pad 6 and the conductive column 14, so that the conductive sheet 7 is in contact with the connecting pad 6 and the conductive column 14 after the spring 13 is reset.

In one embodiment, the heat conducting fins 4 are provided in plurality, and the heat conducting fins 4 are made of copper sheets, so that the heat conductivity is good, and the heat exchange efficiency is improved.

The working principle is as follows:

when an external circuit short circuit occurs, the current is rapidly increased, the current flowing through the enameled coil 9 is rapidly increased, according to the electromagnetic induction principle, the enameled coil 9 generates electromagnetic force for moving the magnet strip 10 outwards, so as to drive the magnet strip 10 to move leftwards, so as to drive the spring 13 to compress, so as to drive the conducting strip 7 to be separated from the connecting strip 6 and the conducting post 14, thereby completing the disconnection of the circuit connection, and avoiding the current from burning the lithium battery body 2, thereby avoiding the phenomenon of bulge explosion caused by the short circuit of the lithium battery body 2, the use is safer and more reliable, after the current returns to normal, the spring 13 rebounds, the conducting strip 7 is pushed to reset, the connecting strip 6 and the conducting post 14 are connected, the recovery can be completed, and the use can be continued, and the arrangement of the conducting strip 7, the enameled coil 9, the magnet strip 10, the guide rod 8, the spring 13, the spring 6 and the conducting post 14 protects the use safety of the lithium battery body 2 under the short circuit condition, the security has been improved, and simultaneously, protective housing 1 is made by rigid plastic structure, it is not fragile, protection lithium cell body 2 does not receive the extrusion destruction, and simultaneously, there is conducting strip 4 at protective housing 1's surperficial through connection, with 2 butts of lithium cell body, the heat that lithium cell body 2 produced transmits the external world through conducting strip 4, thereby guarantee the radiating efficiency, and simultaneously, through sealed 3 sealing connection of gluing between conducting strip 4 and the protective housing 1, make protective housing 1 improve waterproof nature when possessing the heat dissipation function, the harm that lithium cell body 2 shell received rainwater erosion has been reduced.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lithium battery with multifunctional protection is characterized by comprising a lithium battery body (2) and a protective shell (1), wherein the protective shell (1) is sleeved on the outer side of the lithium battery body (2), a cathode-anode contact sheet (15) is installed on the top surface of the lithium battery body (2), a sleeve (5) is sleeved between the lithium battery body (2) and the protective shell (1) on the outer side of the cathode-anode contact sheet (15), a conductive column (14) is welded on the top surface of the cathode-anode contact sheet (15), a connecting sheet (6) is fixedly connected above the conductive column (14) in a penetrating mode and penetrates through the protective shell (1), a conductive sheet (7) is arranged on one side of the conductive column (14) and one side of the connecting sheet (6), a guide rod (8) is connected on the surface of one side of the sleeve (5) in a penetrating mode, one end of the guide rod (8) is fixedly connected with the conductive sheet (7), and a spring (13) is sleeved between the conductive sheet (7) and the inner wall of the sleeve (5) on the outer side of the guide rod (8), lie in sleeve (5) one side surface through connection between guide bar (8) and have insulator spindle (12), and insulator spindle (12) one end and conducting strip (7) fixed connection to insulator spindle (12) other end fixed transverse connection has magnet strip (10), enameled coil (9) have been cup jointed in the magnet strip (10) outside, and enameled coil (9) are through solid fixed ring (11) and protective housing (1) inner wall fixed connection.

2. The lithium battery with multifunctional protection as claimed in claim 1, wherein the heat conducting sheet (4) is inserted through the outer wall of the protective shell (1), one end of the heat conducting sheet (4) abuts against the outer wall of the lithium battery body (2), and the joint between the heat conducting sheet (4) and the protective shell (1) is sealed by the sealant (3).

3. The lithium battery with multifunctional protection according to claim 1, characterized in that the enameled coil (9) is connected in parallel with the working circuit, and the number of turns of the enameled coil (9) is not less than 30.

4. Lithium battery with multifunction protection according to claim 1, characterized by the fact that the guiding rod (8) is of insulating material and the guiding rod (8) is of cylindrical structure.

5. The lithium battery with multifunctional protection according to claim 1, wherein the connecting sheet (6), the conducting sheet (7) and the conducting post (14) are made of copper, and the length of the conducting sheet (7) is much longer than the vertical distance between the connecting sheet (6) and the conducting post (14).

6. The lithium battery with multifunction protection according to claim 2, characterized in that the heat conducting sheet (4) is provided in plurality, and the heat conducting sheet (4) is made of copper thin sheet.