CN211150706U

CN211150706U - Overcharge-prevention high-rate polymer lithium battery

Info

Publication number: CN211150706U
Application number: CN201922219891.0U
Authority: CN
Inventors: 李治国
Original assignee: Fujian Deyan New Energy Technology Co ltd
Current assignee: Fujian Deyan New Energy Technology Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-07-31
Anticipated expiration: 2029-12-12

Abstract

The utility model belongs to the technical field of polymer lithium batteries, in particular to an overcharge-prevention high-rate polymer lithium battery, which comprises a polymer lithium battery body and a protective shell, wherein the end surface of the polymer lithium battery body is provided with a contact metal sheet, and the left side surface and the right side surface of the protective shell are both arc-shaped; the end face of the tail end of the polymer lithium battery body is provided with a connecting block, the end part of the connecting block is connected with a locking block, and the inner bottom surface of the accommodating cavity is provided with a locking structure corresponding to the locking block; the transverse section of the locking block is of an isosceles trapezoid structure; the utility model discloses a prevent overcharging high magnification polymer lithium cell is equipped with the protecting crust and carries out safety protection to polymer lithium cell body, and the protecting crust has the bleeder vent, makes things convenient for the ventilative heat dissipation of polymer lithium cell, and the silicon rubber filler has good flexible effect and heat resistance, cushions the protection to polymer lithium cell body, produces the influence to external equipment when avoiding polymer lithium cell body to break down simultaneously.

Description

Overcharge-prevention high-rate polymer lithium battery

Technical Field

The utility model belongs to the technical field of the polymer lithium cell, concretely relates to prevent overcharging high magnification polymer lithium cell.

Background

The discharge rate is the current value required when the battery discharges the rated capacity within a specified time, the data value is equal to the multiple of the rated capacity of the battery, generally expressed by a letter C, generally speaking, the number C is more than 1, namely the high rate, the high rate is a relative concept, the larger the number C of the lithium battery is, the higher rate battery is, the polymer lithium ion power battery with the large discharge number C is the high rate polymer lithium battery, and the polymer lithium ion power battery with the large discharge number C is generally not applied to digital products such as mobile phones and the like, but applied to power systems of electric vehicles, various models, remote control model vehicles and the like which need explosive force, and the overcharge-proof high rate polymer lithium battery can be continuously charged in a state of 9V and 1A all the time.

Originally, prevent overcharging high magnification polymer lithium cell when using, all be direct embedding and install in the battery jar of equipment, lithium cell itself lacks protection machanism, and the life of lithium cell is discounted greatly, if lithium cell itself breaks down, must influence the overall structure of equipment simultaneously.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a prevent overcharging high magnification polymer lithium cell has safe in utilization convenience, easily dismouting and long-lived characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the overcharge-preventing high-rate polymer lithium battery comprises a polymer lithium battery body and a protective shell, wherein an accommodating cavity capable of accommodating the polymer lithium battery body is arranged in the protective shell, a contact metal sheet is arranged on the end face of the polymer lithium battery body, the protective shell is of a cuboid structure with one open end and the other closed end, and the left side face and the right side face of the protective shell are both arc-shaped; the end face of the tail end of the polymer lithium battery body is provided with a connecting block, the end part of the connecting block is connected with a locking block, and the inner bottom surface of the accommodating cavity is provided with a locking structure corresponding to the locking block; the transverse section of the locking block is of an isosceles trapezoid structure.

As a preferred technical solution of the present invention, the locking structure comprises an external connection pipe, a movable block and a locking swing rod, the external connection pipe is installed through the tail end of the protective shell, the movable block is movably installed inside the external connection pipe, two connection lugs are disposed on the end surface of the movable block, the two connection lugs are distributed oppositely, and the locking swing rod is connected with the connection lugs through a rotation shaft; the opposite surfaces of the two locking swing rods are respectively provided with a locking head, and the transverse section of each locking head is of an arc-shaped structure.

As a preferred technical solution of the present invention, the present invention further comprises a return spring, wherein a limit groove is formed on an inner wall of the outer connecting pipe, a limit ring corresponding to the limit groove is fixed on an outer wall of the movable block, the return spring is sleeved on the movable block, and the return spring is located between an end wall of the limit groove close to the locking swing rod and the limit ring; the terminal surface of movable block still is fixed with the registration arm, two the engaging lug all is in this locking head inboard.

As an optimized technical scheme of the utility model, the movable block deviates from install on the end wall of engaging lug and dismantle the button.

As an optimized technical scheme of the utility model, the top surface and the bottom surface of protecting crust all seted up with the bleeder vent that the holding chamber is linked together.

As an optimal technical scheme of the utility model, set up the recess that distributes along its length direction on the inner wall of polymer lithium cell body be equipped with flexible filler in the recess.

As an optimized technical scheme of the utility model, flexible filler is the silicon rubber filler.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a prevent overcharging high magnification polymer lithium cell is equipped with the protecting crust and carries out safety protection to polymer lithium cell body, and the protecting crust has the bleeder vent, makes things convenient for the ventilative heat dissipation of polymer lithium cell, and the silicon rubber filler has good flexible effect and heat resistance, cushions the protection to polymer lithium cell body, produces the influence to external equipment when avoiding polymer lithium cell body to break down simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the polymer lithium battery of the present invention;

FIG. 3 is a schematic top sectional view of the protective shell of the present invention;

fig. 4 is an enlarged cross-sectional structural view of a portion a of fig. 3 according to the present invention;

fig. 5 is a schematic view of a connection structure between a polymer lithium battery body and a protective shell according to the present invention;

in the figure: 1. a polymer lithium battery body; 2. a protective shell; 3. a contact metal sheet; 4. an accommodating cavity; 5. air holes are formed; 6. a groove; 7. a flexible filler; 8. connecting blocks; 9. a locking block; 10. an outer connecting pipe; 11. a movable block; 12. a limiting groove; 13. a limiting ring; 14. a return spring; 15. connecting lugs; 16. locking the swing rod; 17. a locking head; 18. a positioning tube; 19. and (6) disassembling the button.

Detailed Description

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

Examples

Referring to fig. 1-5, the present invention provides the following technical solutions: a high-rate polymer lithium battery capable of preventing overcharge comprises a polymer lithium battery body 1 and a protective shell 2, wherein an accommodating cavity 4 capable of accommodating the polymer lithium battery body 1 is formed in the protective shell 2, a contact metal sheet 3 is arranged on the end face of the polymer lithium battery body 1, when the polymer lithium battery is used, the polymer lithium battery body 1 is installed in the accommodating cavity 4 of the protective shell 2, the contact metal sheet 3 is connected with a device to be electrified through a lead, the protective shell 2 is of a cuboid structure with one open end and the other closed end, and the left side face and the right side face of the protective shell 2 are both arc-shaped; the end face of the tail end of the polymer lithium battery body 1 is provided with a connecting block 8, the end part of the connecting block 8 is connected with a locking block 9, and the inner bottom surface of the accommodating cavity 4 is provided with a locking structure corresponding to the locking block 9; the horizontal tangent plane of locking block 9 is isosceles trapezoid structure, and locking block 9 is matched with locking structure to the structure convenience locking block 9, realizes the auto-lock and makes things convenient for laborsaving more, directly can realize the locking in pressing into holding chamber 4 with the tail end of polymer lithium cell body 1, guarantees that polymer lithium cell body 1 is connected stably with protecting crust 2.

Specifically, according to fig. 3 and fig. 4, in this embodiment, the locking structure includes an outer connecting pipe 10, a movable block 11 and a locking swing rod 16, the outer connecting pipe 10 is installed at the tail end of the protective shell 2 in a penetrating manner, the movable block 11 is movably installed inside the outer connecting pipe 10, two connecting lugs 15 which are distributed oppositely are arranged on the end surface of the movable block 11, and the locking swing rod 16 is respectively connected with the connecting lugs 15 through rotating shafts; have locking head 17 on two locking pendulum rod 16's the opposite face respectively, and locking head 17's horizontal tangent plane is circular-arc structure, and locking head 17's circular-arc structure cooperation locking block 9 isosceles trapezoid structure for polymer lithium cell body 1 is connected conveniently laborsavingly with protecting crust 2, utilizes two symmetric distribution's locking head 17 and locking block 9 to constitute the block structure, guarantees that polymer lithium cell body 1 is connected stably with protecting crust 2.

Specifically, as shown in fig. 4 and 5, in this embodiment, the locking device further includes a return spring 14, a limiting groove 12 is formed on an inner wall of the outer connecting pipe 10, a limiting ring 13 corresponding to the limiting groove 12 is fixed on an outer wall of the movable block 11, the return spring 14 is sleeved on the movable block 11, and the return spring 14 is located between one end wall of the limiting groove 12 close to the locking swing rod 16 and the limiting ring 13; the end face of the movable block 11 is further fixed with a positioning tube 18, the two connecting lugs 15 are located on the inner side of the locking head 17, after the polymer lithium battery body 1 is pressed, the locking block 9 can enable the locking head 17 to swing outwards along with the free end of the locking swing rod 16, the positioning tube 18 provides a fulcrum for swinging the locking swing rod 16, a positioning effect is achieved on the locking swing rod 16, the movable block 11 can be pulled to move after the locking swing rod 16 swings, the reset spring 14 is compressed by the limiting ring 13, after the locking block 9 crosses the locking head 17, the reset spring 14 enables the movable block 11 to move backwards and reset by the limiting ring 13, the positioning tube 18 still serves as the fulcrum of the locking swing rod 16, the two locking heads 17 are drawn close towards the inner side and clamped with the locking block 9.

Specifically, according to fig. 4, in the present embodiment, a detaching button 19 is installed on an end wall of the movable block 11 away from the connecting lug 15, when the lithium polymer battery body 1 is detached, the detaching button 19 is pressed to move the movable block 11 towards the inside, after the locking swing rod 16 and the locking block 9 are kept loose, the locking block 9 is separated from the locking structure, and the lithium polymer battery body 1 is ejected after the detaching button 19 is continuously pressed.

Specifically, according to fig. 1, in this embodiment, the top surface and the bottom surface of the protective shell 2 are both provided with air vents 5 communicated with the accommodating cavity 4, which is beneficial to ventilation and heat dissipation of the polymer lithium battery body 1.

Specifically, as shown in fig. 1 and fig. 3, in this embodiment, a groove 6 distributed along the length direction of the inner wall of the polymer lithium battery body 1 is formed in the inner wall of the polymer lithium battery body 1, and a flexible filler 7 is disposed in the groove 6, so that a flexible protection effect is exerted on the polymer lithium battery body 1, and the polymer lithium battery body 1 is prevented from being damaged by vibration and being affected by external devices after being damaged.

Specifically, as shown in fig. 1 and fig. 3, in the present embodiment, the flexible filler 7 is a silicone rubber filler, and has good elastic effect and high temperature resistance.

The utility model discloses a theory of operation and use flow: when the polymer lithium battery body 1 of the utility model is used, the tail end of the polymer lithium battery body 1 is directly pressed into the accommodating cavity 4, the two locking heads 17 which are symmetrically distributed and the locking block 9 form a clamping structure, the polymer lithium battery body 1 and the protective shell 2 are ensured to be stably connected, and the contact metal sheet 3 is connected with the applied electric equipment by a lead;

when the polymer lithium battery body 1 is disassembled, the disassembling button 19 is pressed, so that the movable block 11 moves towards the inner side, when the locking swing rod 16 and the locking block 9 are kept loose, the locking block 9 is separated from the locking structure, and the polymer lithium battery body 1 is ejected after the disassembling button 19 is continuously pressed, which is very convenient.

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

Claims

1. The utility model provides a prevent overcharging high magnification polymer lithium cell, includes polymer lithium cell body (1) and protective housing (2), for can holding in protective housing (2) the holding chamber (4) of polymer lithium cell body (1), the terminal surface of polymer lithium cell body (1) is equipped with contact sheetmetal (3), its characterized in that: the protective shell (2) is of a cuboid structure with one end opened and the other end closed, and the left side surface and the right side surface of the protective shell (2) are both arc-shaped; the end face of the tail end of the polymer lithium battery body (1) is provided with a connecting block (8), the end part of the connecting block (8) is connected with a locking block (9), and the inner bottom surface of the accommodating cavity (4) is provided with a locking structure corresponding to the locking block (9); the transverse section of the locking block (9) is of an isosceles trapezoid structure.

2. The overcharge-resistant high-rate polymer lithium battery according to claim 1, wherein: the locking structure comprises an outer connecting pipe (10), a movable block (11) and a locking swing rod (16), the outer connecting pipe (10) is installed at the tail end of the protective shell (2) in a penetrating mode, the movable block (11) is movably installed inside the outer connecting pipe (10), two connecting lugs (15) which are distributed oppositely are arranged on the end face of the movable block (11), and the locking swing rod (16) is connected with the connecting lugs (15) through rotating shafts respectively; the opposite surfaces of the two locking swing rods (16) are respectively provided with a locking head (17), and the transverse section of each locking head (17) is of an arc-shaped structure.

3. The overcharge-resistant high-rate polymer lithium battery according to claim 2, wherein: the outer connecting pipe is characterized by further comprising a return spring (14), a limiting groove (12) is formed in the inner wall of the outer connecting pipe (10), a limiting ring (13) corresponding to the limiting groove (12) is fixed on the outer wall of the movable block (11), the return spring (14) is sleeved on the movable block (11), and the return spring (14) is located between one end wall, close to the locking swing rod (16), of the limiting groove (12) and the limiting ring (13); the end face of the movable block (11) is also fixedly provided with a positioning tube (18), and the two connecting lugs (15) are positioned on the inner side of the locking head (17).

4. The overcharge-resistant high-rate polymer lithium battery according to claim 2, wherein: the end wall of the movable block (11) departing from the connecting lug (15) is provided with a disassembly button (19).

5. The overcharge-resistant high-rate polymer lithium battery according to claim 1, wherein: the top surface and the bottom surface of the protective shell (2) are both provided with air holes (5) communicated with the accommodating cavity (4).

6. The overcharge-resistant high-rate polymer lithium battery according to claim 1, wherein: the inner wall of the polymer lithium battery body (1) is provided with grooves (6) distributed along the length direction of the polymer lithium battery body, and flexible fillers (7) are arranged in the grooves (6).

7. The overcharge-resistant high-rate polymer lithium battery according to claim 6, wherein: the flexible filler (7) is a silicon rubber filler.