CN210692698U

CN210692698U - Charging protection block type lithium battery

Info

Publication number: CN210692698U
Application number: CN201921756824.6U
Authority: CN
Inventors: 林雪娜; 方桓周
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-19
Filing date: 2019-10-19
Publication date: 2020-06-05
Anticipated expiration: 2029-10-19

Abstract

The utility model discloses a protection piece type lithium cell charges, including shell and lithium cell, the inside fixedly connected with lithium cell of shell, and the lithium cell top surface is provided with negative pole access head and positive pole access head to the embedding of shell top surface has last positive pole clamping piece and negative pole to connect, the lithium cell top surface opens and close the pipe through solid fixed ring fixedly connected with, and opens and close inside fixed mounting and have the response piece to response piece one end has the top through second spring coupling, the top other end is pasted and is had the rubber head. Has the advantages that: when the electric current is normal, the magnetic force that magnetic field produced is not enough to promote the extension of second spring, when the electric current increases suddenly, the magnetic field dynamics reinforcing, the mutual exclusion phenomenon between response piece and the top is obvious, the extension of second spring, the top promotes the rubber head and promotes the busbar and rotate along articulated seat to make the busbar leave anode clamping piece and lower anode clamping piece, carry out the open circuit, thereby prevent that the electric current is too big and arouse the lithium cell damage, the safety of lithium cell has been protected.

Description

Charging protection block type lithium battery

Technical Field

The utility model relates to a lithium cell technical field particularly, relates to a protection of charging block type lithium cell.

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, and has very high environmental requirements due to the very active chemical characteristics of the lithium metal, 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 are made on power supplies. The lithium battery has then entered a large-scale practical stage.

The lithium cell is comparatively extensive in daily life uses, but the lithium cell can appear the problem of explosion, burning or swell sometimes when not using professional power to charge, very dangerous, and the electric current in the real life can not be stable always, all is provided with the equipment of stationary current in all kinds of electrical apparatus, nevertheless, can't install this type of equipment in the lithium cell, and the sudden increase of electric current can seriously influence the safety of charging of lithium cell.

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 protection of charging block type lithium cell possesses the advantage of automatic circuit breaking, protection lithium cell safety, and then solves the problem among the above-mentioned background art.

(II) technical scheme

For the advantage of realizing above-mentioned automatic circuit break, protection lithium cell safety, the utility model discloses a specific technical scheme as follows:

a charging protection block type lithium battery comprises a shell and a lithium battery, wherein the lithium battery is fixedly connected inside the shell, a cathode access head and an anode access head are arranged on the top surface of the lithium battery, an upper anode clamping piece and a cathode joint are embedded on the top surface of the shell, an opening and closing pipe is fixedly connected on the top surface of the lithium battery through a fixing ring, an induction block is fixedly arranged inside the opening and closing pipe, one end of the induction block is connected with a top head through a second spring, the other end of the top head is pasted with a rubber head, an enameled wire is connected between the cathode joint and the cathode access head and penetrates through the opening and closing pipe and surrounds the surface of the induction block, an anode touch strip is fixedly arranged on the top surface of the anode access head, a lower anode clamping piece is fixedly connected on the top surface of the anode touch strip, a conductive strip is arranged between the upper anode clamping piece and the, and one side surface of the conductive strip is positioned above the hinged seat and is connected with the inner wall of the shell through a first spring.

Furthermore, the opening and closing pipe is of a cylindrical structure, the top is of a cylindrical structure, and the top is in sliding connection with the inner wall of the opening and closing pipe.

Furthermore, the inner surface of the upper anode clamping piece is fixedly connected with a clamping piece, the upper anode clamping piece and the clamping piece are both made of metal materials, and the clamping piece is of an elastic structure.

Furthermore, the upper anode clamping piece and the lower anode clamping piece are of the same structure.

Furthermore, the hinge seat is made of an insulating material.

Further, the first spring and the second spring are both plastic springs.

(III) advantageous effects

Compared with the prior art, the utility model provides a protection of charging block type lithium cell possesses following beneficial effect:

the utility model discloses a switching tube, when charging, let in the electric current in the enameled wire, the enameled wire is wound on the response piece surface, the response piece produces magnetic field, the top is made for magnet, and top one end is just being the homopolar magnetic field that the response piece produced after response piece and the enameled wire circular telegram, the two produces the exclusive phenomenon, the second spring is drawing the top and is not stretching out outward, when the electric current is normal, the magnetic force that the magnetic field produced is not enough to promote the extension of second spring, when the electric current increases suddenly, the magnetic field dynamics reinforcing, the exclusive phenomenon between response piece and the top is obvious, the extension of second spring, the top promotes the rubber head and promotes the busbar and rotates along the hinge seat, thereby make the busbar leave anode clamping piece and lower anode clamping piece, carry out the open circuit, thereby prevent that the electric current is too big and arouse the lithium cell damage, the safety of lithium cell has been protected.

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 charging protection block type lithium battery according to the present invention during normal charging;

fig. 2 is a schematic structural diagram of a charging protection block type lithium battery according to the present invention when the current is overloaded;

FIG. 3 is a schematic view of the internal structure of the opening/closing tube of the present invention;

fig. 4 is a schematic view of the connection between the upper anode clip and the conductive strip according to the present invention.

In the figure:

1. a housing; 2. a lithium battery; 3. an anode touch bar; 4. a lower anode clamping piece; 5. a conductive strip; 6. a hinged seat; 7. a first spring; 8. an upper anode clamping piece; 9. a cathode terminal; 10. a fixing ring; 11. opening and closing the tube; 12. enamelled wires; 13. ejecting the head; 14. a second spring; 15. an induction block; 16. a rubber head; 17. a clip.

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 protection of charging block type lithium cell.

Referring now to the drawings and the detailed description, as shown in fig. 1-4, a rechargeable protective block type lithium battery according to an embodiment of the present invention includes a housing 1 and a lithium battery 2, the lithium battery 2 is fixedly connected inside the housing 1, the lithium battery 2 is a common battery structure on the market and will not be described herein too much, and the top surface of the lithium battery 2 is provided with a cathode connector and an anode connector, which are conventional, and an upper anode clip 8 and a cathode connector 9 are embedded in the top surface of the housing 1, the top surface of the lithium battery 2 is fixedly connected with an opening/closing tube 11 through a fixing ring 10, and an induction block 15 is fixedly installed inside the opening/closing tube 11, and one end of the induction block 15 is connected with a top 13 through a second spring 14, the induction block 15 is made of metal material, the other end of the top 13 is pasted with a rubber head 16, and an enameled wire 12 is connected between the cathode connector 9 and, the enameled wire 12 penetrates through the open-close tube 11 and surrounds the surface of the induction block 15, the top head 13 is made of a magnet, one end of the top head 13 is opposite to the induction block 15 and is homopolar to a magnetic field generated by the induction block 15 after the enameled wire 12 is electrified, mutual repulsion phenomenon is generated between the induction block and the induction block, the anode contact strip 3 is fixedly installed on the top surface of the anode access head, the anode contact strip 3 is made of metal materials, the top surface of the anode contact strip 3 is fixedly connected with the lower anode clamping piece 4, the conducting strip 5 is arranged between the upper anode clamping piece 8 and the lower anode clamping piece 4, the central position of the conducting strip 5 is hinged with the inner wall of the shell 1 through the hinge seat 6, one side surface of the conducting strip 5 is positioned above the hinge seat 6 and is connected with the inner wall of the shell 1 through the first spring 7, when charging is carried out, current is introduced into the enameled wire 12, the enameled wire 12 surrounds the surface of the induction block, when the electric current increases suddenly, the magnetic field dynamics reinforcing, the mutual exclusion phenomenon between response piece 15 and the top 13 is obvious, and second spring 14 extension, top 13 promote rubber head 16 and promote busbar 5 and rotate along articulated seat 6 to make busbar 5 leave last positive clamping piece 8 and lower positive clamping piece 4, open circuit, thereby prevent that the electric current is too big and arouse lithium cell 2 to destroy, protected lithium cell 2's safety.

In one embodiment, the opening and closing pipe 11 is a cylindrical structure, the plug 13 is slidably connected with the inner wall of the opening and closing pipe 11, the opening and closing pipe 11 is made of a non-metal material to prevent a magnetic field from being interfered, and the maximum extension length of the second spring 14 is less than the moving distance of the plug 13 inside the opening and closing pipe 11 to prevent the plug 13 from being pushed out of the opening and closing pipe 11.

In one embodiment, the inner surface of the upper anode clamping piece 8 is fixedly connected with the clamping piece 17, and the upper anode clamping piece 8 and the clamping piece 17 are both made of metal materials, and the clamping piece 17 is of an elastic structure, and the clamping piece 17 is of an arc-shaped structure and can be compressed and deformed so as to facilitate the entry of the conductive strip 5, the conductive strip 5 enters between the clamping pieces 17, and the clamping piece 17 generates elastic force to support the conductive strip 5, thereby enhancing the connection stability.

In one embodiment, the upper anode clamping piece 8 and the lower anode clamping piece 4 have the same structure, and the lower anode clamping piece 4 and the upper anode clamping piece 8 have the same working principle, which is not described herein in detail.

In one embodiment, the hinge seat 6 is made of an insulating material to prevent the current passing through the conductive bar 5 from flowing to the housing 1, thereby preventing electric shock.

In one embodiment, the first spring 7 and the second spring 14 are both plastic springs, the first spring 7 preventing current in the conductive strip 5 from flowing to the housing 1, and the second spring 14 preventing interference from magnetic fields.

The working principle is as follows:

switch on power anode and last anode clamping piece 8, connect 9 switches on power cathode and negative pole, can begin to charge, let in the electric current in the enameled wire 12, enameled wire 12 encircles on the 15 surfaces of response piece, response piece 15 produces magnetic field, when the electric current is normal, the magnetic force that the magnetic field produced is not enough to promote the extension of second spring 14, when the electric current increases suddenly, the magnetic field dynamics reinforcing, the mutual exclusion phenomenon between response piece 15 and top 13 is obvious, the extension of second spring 14, top 13 promotes rubber head 16 and promotes busbar 5 and rotates along articulated seat 6, thereby make busbar 5 leave last anode clamping piece 8 and lower anode clamping piece 4, open circuit, thereby prevent that the electric current from too big and arousing lithium cell 2 to destroy, lithium cell 2's safety has been protected.

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 charging protection block type lithium battery is characterized by comprising a shell (1) and a lithium battery (2), wherein the lithium battery (2) is fixedly connected inside the shell (1), a cathode access head and an anode access head are arranged on the top surface of the lithium battery (2), an upper anode clamping sheet (8) and a cathode joint (9) are embedded in the top surface of the shell (1), an opening and closing pipe (11) is fixedly connected on the top surface of the lithium battery (2) through a fixing ring (10), an induction block (15) is fixedly installed inside the opening and closing pipe (11), one end of the induction block (15) is connected with a top head (13) through a second spring (14), a rubber head (16) is pasted on the other end of the top head (13), an enameled wire (12) is connected between the cathode joint (9) and the cathode access head, and the enameled wire (12) penetrates through the opening and closing pipe (11) and surrounds the surface of the induction block (, the positive pole inserts first top surface fixed mounting has positive pole feeler (3), and positive pole feeler (3) top surface fixedly connected with down positive pole clamping piece (4), it is provided with busbar (5) to go up between positive pole clamping piece (8) and lower positive pole clamping piece (4), and busbar (5) central point puts through articulated seat (6) and shell (1) inner wall articulated to busbar (5) a side surface is located articulated seat (6) top and is passed through first spring (7) and shell (1) inner wall connection.

2. The lithium battery of claim 1, wherein the opening/closing tube (11) has a cylindrical structure, the plug (13) has a cylindrical structure, and the plug (13) is slidably connected to the inner wall of the opening/closing tube (11).

3. The lithium battery of claim 1, wherein the upper anode clip (8) has a clip (17) fixedly attached to an inner surface thereof, and the upper anode clip (8) and the clip (17) are made of a metal material, and the clip (17) has an elastic structure.

4. A lithium battery of the charge protection block type according to claim 1, characterized in that the upper anode jaw (8) and the lower anode jaw (4) are of the same structure.

5. A lithium battery of the charge protection block type according to claim 1, characterized in that the hinged seat (6) is made of insulating material.

6. A lithium battery pack of the charging protection block type according to claim 1, characterized in that said first spring (7) and said second spring (14) are both plastic springs.