CN216120660U

CN216120660U - Polymer lithium ion battery cell with short-circuit protection function

Info

Publication number: CN216120660U
Application number: CN202122468543.4U
Authority: CN
Inventors: 梁诗章
Original assignee: Huizhou Kangpinlai Technology Co ltd
Current assignee: Huizhou Kangpinlai Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-03-22
Anticipated expiration: 2031-10-12

Abstract

The utility model discloses a polymer lithium ion battery cell with a short-circuit protection function, which comprises a battery body, a polymerization battery cell and a short-circuit protection sleeve, wherein the polymerization battery cell penetrates through and is inserted into the upper surface of the battery body, and the short-circuit protection sleeve is fixedly sleeved on the side surface of the top end of the polymerization battery cell. The utility model has the beneficial effects that: set up the short circuit protective sheath, utilize the safety that the short circuit protective sheath can protect the terminal, avoid unnecessary non-safety contact and electric leakage possibility, corresponding mechanism with current fuse applies the short circuit protective sheath in, make the fuse directly be connected with the lithium cell, the fuse melts the back, the automatic back that contracts of circuit breaking spring, break away from being connected between battery and the external circuit, only need insert the short circuit protective sheath with the fuse from the quick maintenance hole in this device, fix the cover again with the short circuit protective sheath on the top of polymerization electricity core, can resume the short circuit protective sheath automatically and to the short circuit protection effect of battery body, whole maintenance process is quick simple.

Description

Polymer lithium ion battery cell with short-circuit protection function

Technical Field

The utility model relates to a polymer lithium ion battery cell with a short-circuit protection function, in particular to a polymer lithium ion battery cell with a short-circuit protection function, and belongs to the technical field of new energy batteries.

Background

With the development of new energy technology, the innovation of new energy batteries is more and more, the new energy automobile batteries are novel automobile batteries which use the new energy technology to reduce the emission pollution of greenhouse gases, and the new energy batteries are used as driving energy supply devices of some machines such as automobiles and the like, and are easily burnt out by self high voltage when a circuit is short-circuited.

In the prior art, a lithium battery is generally only used as a power supply unit, a corresponding short-circuit protection device is usually connected in a related connection circuit to protect electronic elements in the circuit from being burnt due to short circuit, a simplest method for implementing short-circuit protection is to install a fuse, but similarly, as a peripheral device, the fuse cannot be directly related to a lithium battery power supply device on one hand, maintenance work of equipment is required during connection and disassembly, a fault probability is increased for the circuit due to the addition of a component, and on the other hand, a fuse metal wire needs to be re-arranged after each function of the fuse, so that the corresponding difficulty in arrangement is high, and the failure phenomenon can be lost if the problems such as lap joint occur in the fuse, so that technical personnel in the field propose a polymer lithium ion battery core with a short-circuit protection function, to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a polymer lithium ion battery cell having a short-circuit protection function, in which a fuse is directly connected to a battery body, thereby preventing a complicated operation of mounting and dismounting and facilitating replacement of the fuse.

The utility model achieves the aim through the following technical scheme, and the polymer lithium ion battery cell with the short-circuit protection function comprises a battery body, a polymerization battery cell and a short-circuit protection sleeve, and is characterized in that: a polymerization battery core penetrates through the upper surface of the battery body, and a short-circuit protective sleeve is fixedly sleeved on the side surface of the top end of the polymerization battery core;

the short circuit protective sheath comprises an insulating rubber shell, an end cap, a fuse and a path indicator, the insulating rubber shell is fixedly sleeved on the side surface of the top end of the polymerization battery core, the end cap is fixedly arranged on the top end of the insulating rubber shell, the fuse is arranged on the inner side of the insulating rubber shell, and the path indicator is fixedly arranged on the side surface of the insulating rubber shell.

Preferably, the side face of the battery body is fixedly connected with a connecting side wing, and the battery body is fixed with the fixing seat through the connecting side wing and the fixing seat bolt.

Preferably, the inner bottom surface of the battery body is fixedly connected with a positioning sleeve, the polymerized battery cell penetrates through the side wall of the battery body and extends into the inner side of the positioning sleeve, and a limiting ring matched with the battery body is fixedly arranged on the side surface of the polymerized battery cell.

Preferably, the side of the top end of the polymerization battery core is fixedly provided with a positioning plate, the inner side of the insulating rubber shell is provided with a built-in quartz sand heat insulation layer, and the side of the insulating rubber shell is provided with a quick maintenance hole matched with the fuse wire in a penetrating manner.

Preferably, the end cap is the copper metal external member that the wire performance is good, the end cap sets up the inboard on insulating rubber housing top, just insulating rubber housing's side is provided with the wiring clamping piece with end cap looks adaptation.

Preferably, the path indicator comprises a circuit breaking spring, a maintenance connecting ring and an indicator light, the circuit breaking spring is fixedly arranged between the two positioning plates, the maintenance connecting ring is fixedly arranged in the middle of the circuit breaking spring, and the indicator light is arranged at one end, close to the battery body, of the circuit breaking spring.

The utility model has the beneficial effects that: the terminal outside of lithium cell cup joints a short circuit protective sheath that has the short-circuit protection mechanism among prior art, utilizes the safety that the terminal can be protected to the short circuit protective sheath on the one hand, avoids unnecessary non-safety contact and electric leakage possibility, and on the other hand uses the corresponding mechanism of current fuse to the short circuit protective sheath in for the fuse is directly connected with the lithium cell to the guard action of circuit, has avoided the installation to maintain the complex operation of fuse.

The short circuit protective sheath among this invention device is through running through the quick maintenance hole that sets up and fuse adaptation in its side, after the fuse melts, the spring that opens the circuit contracts automatically, break away from being connected between battery and the external circuit, need demolish the fuse and reinstall the fuse according to current fuse mechanism, but only need insert the short circuit protective sheath with the fuse from quick maintenance hole in this device, fix the cover again on the top of polymerization electricity core with the short circuit protective sheath, can the short circuit protection effect of automatic recovery short circuit protective sheath to the battery body, whole maintenance process is quick simple.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall construction of the present invention;

FIG. 3 is an enlarged view of the mechanism at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is an enlarged view of the structure at B in soil 4 of the present invention;

FIG. 6 is a top view of the overall structure of the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 6 at C according to the present invention.

In the figure: 1. a battery body; 2. polymerizing the battery cell; 3. a short circuit protection sleeve; 301. an insulating rubber housing; 302. an end cap; 303. a fuse; 304. a pathway indicator; 3041. a breaking spring; 3042. maintaining the connecting ring; 3043. an indicator light; 4. connecting the side wings; 5. a positioning sleeve; 6. a limiting ring; 7. positioning a plate; 8. a quartz sand heat insulation layer is arranged inside; 9. rapidly maintaining the hole; 10. a wiring clip.

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.

The embodiment of the utility model discloses a polymer lithium ion battery cell with a short-circuit protection function, which comprises the following components in percentage by weight:

according to the attached drawing 1, the battery comprises a battery body 1, a polymer battery cell 2 and a short circuit protection sleeve 3, wherein the polymer battery cell 2 is inserted into the upper surface of the battery body 1, and the polymer battery cell 2 penetrates through the battery body 1 and serves as a binding post for power output of the battery body 1.

The fixed short circuit protective sheath 3 that has cup jointed in side on 2 tops of polymerization electricity core, can protect battery body 1 not receive the short circuit harm of circuit through short circuit protective sheath 3, flank 4 is connected to the side fixedly connected with of battery body 1, the side of connecting flank 4 runs through and is provided with connecting bolt, fix this device and mounting bracket bolt through connecting flank 4, the fixed wiring clamping piece 10 that is provided with in side of short circuit protective sheath 3, wiring clamping piece 10 is the output sheetmetal of deriving battery body 1 internal electric power.

As shown in fig. 2-3, the short-circuit protection sleeve 3 includes an insulating rubber casing 301, an end cap 302, a fuse 303 and a path indicator 304, the insulating rubber casing 301 is fixedly sleeved on a side surface of a top end of the polymer electric core 2, the insulating rubber casing 301 serves as an insulating shell of the short-circuit protection sleeve 3 and can prevent the polymer electric core 2 from directly contacting with an external conductor, the end cap 302 is fixedly disposed on the top end of the insulating rubber casing 301, and the end cap 302 serves as a connection carrier between the polymer electric core 2 and an external circuit.

The fuse 303 is arranged inside the insulating rubber case 301, the material and diameter of the fuse 303 depend on the magnitude of the current in the battery body 1, the path indicator 304 is fixedly arranged on the side surface of the insulating rubber case 301, and whether the fuse 303 is normal or not is visually observed through the light and shade of the path indicator 304.

The interior bottom surface fixedly connected with position sleeve 5 of battery body 1, polymerization electricity core 2 runs through the lateral wall of battery body 1 and extends into the inboard of position sleeve 5, and the fixed spacing ring 6 that is provided with battery body 1 looks adaptation in side of polymerization electricity core 2, and position sleeve 5 is injectd polymerization electricity core 2's position with spacing ring 6 is supplementary.

As shown in fig. 4 to 7, the path indicator 304 includes a breaking spring 3041, a maintenance connecting ring 3042 and an indicator light 3043, the breaking spring 3041 is fixedly disposed between the two positioning plates 7, the maintenance connecting ring 3042 is fixedly disposed in the middle of the breaking spring 3041, the side surface of the maintenance connecting ring 3042 is simultaneously under the pulling force of the breaking spring 3041 and faces the through hole at the designated position in the balanced state, and the indicator light 3043 is disposed at one end of the breaking spring 3041 close to the battery body 1.

Fixed locating plate 7 that is provided with in side on polymerization electricity core 2 top, the inboard of insulating rubber casing 301 is provided with built-in quartz sand heat insulation layer 8, heat when built-in quartz sand heat insulation layer 8 blocks fuse 303 fusing does not influence the normal use of other components on every side, the side of insulating rubber casing 301 runs through the quick maintenance hole 9 of offering with fuse 303 looks adaptation, can carry out the replacement of fuse 303 fast through maintaining hole 9 fast.

The end cap 302 is a copper metal sleeve with good wire performance, the end cap 302 is arranged on the inner side of the top end of the insulating rubber shell 301, and the side surface of the insulating rubber shell 301 is provided with a wiring clip 10 matched with the end cap 302.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a polymer lithium ion cell with short-circuit protection function, includes battery body (1), polymerization electricity core (2) and short circuit protection cover (3), its characterized in that: a polymerization electric core (2) penetrates through the upper surface of the battery body (1), and a short-circuit protective sleeve (3) is fixedly sleeved on the side surface of the top end of the polymerization electric core (2);

short circuit protective sheath (3) are including insulating rubber casing (301), end cap (302), fuse (303) and route indicator (304), insulating rubber casing (301) have been cup jointed to the side on polymerization electricity core (2) top fixedly, the top of insulating rubber casing (301) is fixed and is provided with end cap (302), the inboard of insulating rubber casing (301) is provided with fuse (303), the side of insulating rubber casing (301) is fixed and is provided with route indicator (304).

2. The polymer lithium ion battery cell with short circuit protection function according to claim 1, wherein: the battery comprises a battery body (1), and is characterized in that the side surface of the battery body (1) is fixedly connected with a connecting side wing (4), and the battery body (1) is fixed with a fixing seat through a connecting side wing (4) by bolts.

3. The polymer lithium ion battery cell with short circuit protection function according to claim 1, wherein: the inner bottom surface of the battery body (1) is fixedly connected with a positioning sleeve (5), the polymerization battery core (2) penetrates through the side wall of the battery body (1) and extends into the inner side of the positioning sleeve (5), and a limiting ring (6) matched with the battery body (1) is fixedly arranged on the side surface of the polymerization battery core (2).

4. The polymer lithium ion battery cell with short circuit protection function according to claim 1, wherein: the side of the top end of the polymerization battery core (2) is fixedly provided with a positioning plate (7), the inner side of the insulating rubber shell (301) is provided with a built-in quartz sand heat-insulating layer (8), and the side of the insulating rubber shell (301) penetrates through a quick maintenance hole (9) matched with the fuse wire (303).

5. The polymer lithium ion battery cell with short circuit protection function according to claim 1, wherein: end cap (302) are the copper metal external member that the wire performance is good, end cap (302) set up the inboard on insulating rubber casing (301) top, just the side of insulating rubber casing (301) is provided with the wiring clamping piece (10) with end cap (302) looks adaptation.

6. The polymer lithium ion battery cell with short circuit protection function according to claim 1, wherein: the path indicator (304) comprises a circuit breaking spring (3041), a maintenance connecting ring (3042) and an indicator lamp (3043), wherein the circuit breaking spring (3041) is fixedly arranged between the two positioning plates (7), the maintenance connecting ring (3042) is fixedly arranged in the middle of the circuit breaking spring (3041), and the indicator lamp (3043) is arranged at one end, close to the battery body (1), of the circuit breaking spring (3041).