CN208835208U

CN208835208U - A kind of lithium ion battery that sealing effect is good

Info

Publication number: CN208835208U
Application number: CN201821849555.3U
Authority: CN
Inventors: 曾晓玲; 曾辉; 罗淑銮
Original assignee: Fujian Guoguan New Energy Technology Co Ltd
Current assignee: Fujian Guoguan New Energy Technology Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2019-05-07
Anticipated expiration: 2028-11-09

Abstract

The utility model relates to technical field of lithium ion, and disclose a kind of lithium ion battery that sealing effect is good, including installing bottom case, the front of the installation bottom case is fixedly installed with the fixing piece that quantity is two, the opposite side of two fixing pieces passes through two plug connectors and is connected with positioning plate, offers the seal groove that between two positioning plates and quantity is two at the top of the installation bottom case.The good lithium ion battery of the sealing effect, force fit plate is pushed to press sealing strip by setting top cover, to realize the sealing to seal groove, the shank of setting is under the action of secondary spring, so that shank is mutually clamped with the locating slot on positioning plate, to realize the fixation of positioning plate and fixing piece, to realize top cover and install the palette of bottom case, to improve its leakproofness, water electrolytic gas is avoided directly to escape from sealing place without filtering, prevent electrolyte from sealing place from revealing.

Description

A kind of lithium ion battery that sealing effect is good

Technical field

The utility model relates to technical field of lithium ion, the good lithium ion battery of specially a kind of sealing effect.

Background technique

Lithium ion battery is a kind of secondary cell, it relies primarily on lithium ion, and movement carrys out work between a positive electrode and a negative electrode, In charge and discharge process, Li+ insertion and deintercalation back and forth between two electrodes, when charging, Li+ is from positive deintercalation, by electrolysis Matter is embedded in cathode, and cathode is in lithium-rich state, then on the contrary, lithium system battery is divided into lithium battery and lithium ion battery, mobile phone when electric discharge What is used with laptop is all lithium ion battery, and usual people's custom is called lithium battery, and battery is generally using containing lithium member The material of element is the representative of modern high performance battery as electrode, and real lithium battery is rarely applied to since risk is big Day electronic product.

Existing lithium ion battery generally carries out sealing, sealing work production efficiency using diaphragm seal and lid in the production process Low, poor reliability causes water electrolytic gas directly to escape from sealing place without filtering, and electrolyte may also be revealed from sealing place, And then corrosion and damage battery cover board assembly, so a kind of lithium ion battery that sealing effect is good is proposed to solve the above problems.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of lithium ion battery that sealing effect is good, has close The advantages that envelope property is good solves existing lithium ion battery and generally carries out sealing, envelope using diaphragm seal and lid in the production process Glue work production efficiency is low, poor reliability, causes water electrolytic gas directly to escape from sealing place without filtering, electrolyte may also be from It is revealed at sealing, and then the problem of corrosion and damage battery cover board assembly.

(2) technical solution

For the purpose for realizing above-mentioned good airproof performance, the utility model provides the following technical solutions: a kind of sealing effect is good The front of lithium ion battery, including installation bottom case, the installation bottom case is fixedly installed with the fixing piece that quantity is two, two institutes It states the opposite side of fixing piece and passes through two plug connectors and be connected with positioning plate, offer position at the top of the installation bottom case Between two positioning plates and quantity is two seal grooves, and the slot inner wall of two seal grooves is filled with sealing strip, institute The top for stating installation bottom case is filled with the electrolyte being located between two seal grooves, and the front of the electrolyte is equipped with cathode Plate, the front of the negative plate are equipped with positive plate, and the front of the positive plate is equipped with diaphragm, and two seal grooves are just Face is plugged with the force fit plate contacted respectively with two sealing strips, and the front of two force fit plates is and in front of diaphragm The back side of top cover is fixedly connected, and fixed top plate is fixedly installed at the top of the installation bottom case, and the top of the fixed top plate is solid Dingan County is equipped with cathode that is positive, being fixedly installed on the right of anode at the top of the fixed top plate.

The plug connector includes shackle member, and shank, the outer cover of the shank are plugged on the left of the shackle member Be connected to the secondary spring being located inside shackle member, the outside of the shank be fixedly installed with inside the shackle member and with auxiliary The fixed ring of spring contact, the shank are fixedly installed with pull ring far from one end of fixed ring.

Preferably, the width of the seal groove is adapted with the width of force fit plate, and the thickness of sealing strip is greater than seal groove Depth.

Preferably, the diameter of the fixed ring is adapted with the internal diameter of plug connector, the diameter of the secondary spring and grafting The internal diameter of part is adapted.

Preferably, positioned at two ipsilateral plug connectors respectively symmetrically inside ipsilateral fixing piece, two described fixed Plate opposite side in position is opened up there are two locating slot, and four shanks are plugged on respectively in four locating slots.

Preferably, the collapsing length of the secondary spring and the moving distance of shank are corresponding, the secondary spring Collapsing length is corresponding with the moving distance of fixed ring.

Preferably, the shank is in T-shaped, and it is close that the diameter of the one end of the shank far from fixed ring is greater than its The diameter of one end of fixed ring.

(3) beneficial effect

Compared with prior art, the utility model provides a kind of lithium ion battery that sealing effect is good, and having following has Beneficial effect:

The good lithium ion battery of the sealing effect is accepted electrolyte by the installation bottom case of setting, is pushed away by the way that top cover is arranged Dynamic pressure plywood presses sealing strip, to realize the sealing to seal groove, the shank of setting is under the action of secondary spring, auxiliary Spring pushes fixed ring, so that shank is mutually clamped with the locating slot on positioning plate, to realize positioning plate and fixation The fixation of part, so that the palette for realizing top cover and installation bottom case avoids water electrolytic gas not to improve its leakproofness It is directly escaped from sealing place by filtering, prevent electrolyte avoids corrosion and damage battery cover board group from revealing from sealing place Part.

Detailed description of the invention

Fig. 1 is the utility model structure sectional view；

Fig. 2 is the utility model structure front view；

Fig. 3 is the connection cross-sectional view that the utility model installs bottom case and top cover；

Fig. 4 is the schematic diagram of the utility model plug connector.

In figure: 1 installation bottom case, 2 fixing pieces, 3 plug connectors, 31 shackle members, 32 shanks, 33 secondary springs, 34 fixed rings, 35 pull rings, 4 force fit plates, 5 positioning plates, 6 seal grooves, 7 sealing strips, 8 electrolyte, 9 negative plates, 10 positive plates, 11 diaphragms, 12 tops Lid, 13 fixed top plates, 14 anodes, 15 cathode.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-4, a kind of lithium ion battery that sealing effect is good, including installation bottom case 1 are please referred to, the front of bottom case 1 is installed It is fixedly installed with the fixing piece 2 that quantity is two, the opposite side of two fixing pieces 2 passes through two plug connectors 3 and is flexibly connected There is a positioning plate 5, the top of installation bottom case 1 offers the seal groove 6 that between two positioning plates 5 and quantity is two, and two The slot inner wall of seal groove 6 is filled with sealing strip 7, and the width of seal groove 6 is adapted with the width of force fit plate 4, and sealing strip 7 Thickness is greater than the depth of seal groove 6, and the top of installation bottom case 1 is filled with the electrolyte 8 being located between two seal grooves 6, electrolysis The front of liquid 8 is equipped with negative plate 9, and the front of negative plate 9 is equipped with positive plate 10, and the front of positive plate 10 is equipped with diaphragm 11, the front of two seal grooves 6 is plugged with the force fit plate 4 contacted respectively with two sealing strips 7, the front of two force fit plates 4 It is fixedly connected with the back side for the top cover 12 for being located at 11 front of diaphragm, the top of installation bottom case 1 is fixedly installed with fixed top plate 13, The top of fixed top plate 13 is fixedly installed with anode 14, and the top of fixed top plate 13, which is fixedly installed with, is located at the negative of 14 the right of anode Pole 15.

Plug connector 3 includes shackle member 31, and the left side of shackle member 31 is plugged with shank 32, positioned at two ipsilateral plug connectors 3 respectively symmetrically inside ipsilateral fixing piece 2, and the opposite side of two positioning plates 5 opens up that there are two locating slot, four grafting Bar 32 is plugged on respectively in four locating slots, and the outside of shank 32 is socketed with the secondary spring 33 inside shackle member 31, The outside of shank 32 is fixedly installed with positioned at the fixed ring 34 shackle member 31 inside and contacted with secondary spring 33, fixed ring 34 Diameter be adapted with the internal diameter of plug connector 3, the diameter of secondary spring 33 is adapted with the internal diameter of plug connector 3, secondary spring 33 Collapsing length it is corresponding with the moving distance of shank 32, the moving distance of the collapsing length of secondary spring 33 and fixed ring 34 Corresponding, for shank 32 in T-shaped, the diameter of the one end of shank 32 far from fixed ring 34 is greater than it close to fixed ring 34 The diameter of one end, shank 32 are fixedly installed with pull ring 35 far from one end of fixed ring 34, are accepted by the installation bottom case 1 of setting Electrolyte 8 pushes force fit plate 4 to press sealing strip 7 by setting top cover 12, to realize the sealing to seal groove 6, setting is inserted For extension bar 32 under the action of secondary spring 33, secondary spring 33 pushes fixed ring 34, so that on shank 32 and positioning plate 5 Locating slot be mutually clamped, to realize the fixation of positioning plate 5 Yu fixing piece 2, to realize top cover 12 and install bottom case 1 Palette avoids water electrolytic gas from directly escaping from sealing place without filtering, so that electrolyte to improve its leakproofness 8 cannot reveal from sealing place, avoid corrosion and damage battery cover board assembly.

It can be seen from the above, the working principle of the good lithium ion battery of the sealing effect is: being held by the installation bottom case 1 of setting Electrolyte 8 is connect, pushes force fit plate 4 to press sealing strip 7 by setting top cover 12, thus realize the sealing to seal groove 6, setting For shank 32 under the action of secondary spring 33, secondary spring 33 pushes fixed ring 34, so that shank 32 and positioning plate 5 On locating slot be mutually clamped, to realize the fixation of positioning plate 5 Yu fixing piece 2, to realize top cover 12 and installation bottom case 1 Palette, to improve its leakproofness.

The invention main points of the utility model are: avoiding water electrolytic gas from directly escaping from sealing place without filtering, so that electric Solution liquid 8 cannot be revealed from sealing place, avoid corrosion and damage battery cover board assembly.

It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device. In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element Process, method, article or equipment in there is also other identical elements.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of good lithium ion battery of sealing effect, including installation bottom case (1), it is characterised in that: installation bottom case (1) Front is fixedly installed with the fixing piece (2) that quantity is two, and two opposite sides of the fixing piece (2) pass through two grafting Part (3) is connected with positioning plate (5), is offered between two positioning plates (5) and is counted at the top of the installation bottom case (1) The seal groove (6) that amount is two, the slot inner wall of two seal grooves (6) are filled with sealing strip (7), the installation bottom case (1) top is filled with the electrolyte (8) being located between two seal grooves (6), and the front of the electrolyte (8) is equipped with cathode The front of plate (9), the negative plate (9) is equipped with positive plate (10), and the front of the positive plate (10) is equipped with diaphragm (11), The front of two seal grooves (6) is plugged with the force fit plate (4) contacted respectively with two sealing strips (7), two pressures The front of plywood (4) is fixedly connected with the back side for the top cover (12) being located in front of diaphragm (11), the top of installation bottom case (1) Portion is fixedly installed with fixed top plate (13), is fixedly installed at the top of the fixed top plate (13) positive (14), the fixed top The cathode (15) being located on the right of positive (14) is fixedly installed at the top of plate (13)；

The plug connector (3) includes shackle member (31), is plugged with shank (32), the grafting on the left of the shackle member (31) The outside of bar (32) is socketed with the secondary spring (33) internal positioned at shackle member (31), the external fixed peace of the shank (32) Equipped with the fixed ring (34) that shackle member (31) are internal and contact with secondary spring (33) is located at, the shank (32) is far from fixed One end of ring (34) is fixedly installed with pull ring (35).

2. a kind of good lithium ion battery of sealing effect according to claim 1, it is characterised in that: the seal groove (6) Width be adapted with the width of force fit plate (4), and the thickness of sealing strip (7) be greater than seal groove (6) depth.

3. a kind of good lithium ion battery of sealing effect according to claim 1, it is characterised in that: the fixed ring (34) Diameter be adapted with the internal diameter of plug connector (3), the diameter of the secondary spring (33) is adapted with the internal diameter of plug connector (3).

4. a kind of good lithium ion battery of sealing effect according to claim 1, it is characterised in that: positioned at ipsilateral two The plug connector (3) is respectively symmetrically internal in ipsilateral fixing piece (2), and two opposite sides of the positioning plate (5) open up There are two locating slot, four shanks (32) are plugged on respectively in four locating slots.

5. a kind of good lithium ion battery of sealing effect according to claim 1, it is characterised in that: the secondary spring (33) collapsing length is corresponding with the moving distance of shank (32), the collapsing length and fixed ring of the secondary spring (33) (34) moving distance is corresponding.

6. a kind of good lithium ion battery of sealing effect according to claim 1, it is characterised in that: the shank (32) In T-shaped, the diameter of the one end of the shank (32) far from fixed ring (34) is greater than it close to one end of fixed ring (34) Diameter.