CN205692878U - Explosion-proof position limiting sealed circle - Google Patents

Abstract

The utility model discloses a kind of explosion-proof position limiting sealed circle, aim to provide and a kind of battery can be simultaneously worked as the explosion-proof and sealing ring of position-limiting action, its drip irrigation device is: include the negative pole sealing ring being embedded at lithium ion battery negative end, described explosion-proof position limiting sealed circle also includes the positive pole sealing ring being embedded at lithium ion cell positive end, the one side that described positive pole sealing ring is conflicted with lithium ion cell positive end is provided with the claw for fixing positive terminal, is provided with the receiving hole for accommodating positive terminal between described claw.Being arranged such, the claw in positive pole sealing ring, for coordinating the boss of positive terminal block, agrees with the profile of lithium ion battery.When lithium ion battery is used in series and is provided with this explosion-proof position limiting sealed circle, explosion-proof position limiting sealed circle is while playing explosion-proof, save adjacent lithium ion battery to two and play position-limiting action, make two adjacent sections lithium ion battery coaxial, prevent from clashing into due to the external world and making the close battery ejection of arrangement accommodate position.

Description

Explosion-proof position limiting sealed circle

Technical field

This utility model relates to electricapparatus part technical field, more specifically, it relates to a kind of explosion-proof position limiting sealed Circle.

Background technology

Lithium ion battery is high with its specific energy, specific power big, have extended cycle life, and without noxious substance, has obtained day Benefit is widely applied.Especially cylindrical lithium ion battery, its sturdy and durable, good seal, easy connection in series-parallel combination, being permitted of it Polytypic and aneroid battery, ickel-cadmium cell, Ni-MH battery overall dimensions identical, as easy as rolling off a log replacement uses, and its use is the most extensive. Therefore it is improved, be allowed to safety and reliability, be the most significant.

Existing column lithium ion battery typically does positive terminal with block, the electrode assembling of its positive terminal in box hat, its The outer surface of negative pole end is end face.Explosion-proof position limiting sealed circle it is embedded with respectively in the positive terminal of lithium ion battery and negative pole end, anti- Quick-fried position limiting sealed circle is pressed in the positive terminal of lithium ion battery and the outer circumferential edge of negative pole end, prevents inside lithium ion cell from exploding Or leakage, lithium ion battery is played a protective role.

At present, the Chinese patent of Application No. 201210221658.6 discloses a kind of anti-explosion battery sealing ring, and it includes Peripheral part, newel, and connect peripheral part and the connecting portion of newel, anti-explosion battery sealing ring is divided into sealing by connecting portion Inside circle and outside sealing ring, towards cell contents inside sealing ring, connecting portion is anti-explosion area near newel annular region. This sealing structure occurs abnormal at battery, and when cell internal pressure increases, relatively thin explosion-proof line is swollen by pressure top, explosion-proof Thread breakage is opened, and makes newel can be easily separated with anti-explosion area, plays explosion-proof effect.

Although this anti-explosion battery sealing ring is prevented from battery and strongly pops, but an anti-explosion battery sealing ring is only capable of Limiting a positive terminal or the explosive event of a negative pole end, in real use state, most of occasions are required for battery even Connecing use, multiple batteries cannot be carried out explosion-proof by this single anti-explosion battery sealing ring.

Utility model content

The purpose of this utility model is to provide and a kind of battery can simultaneously work as the explosion-proof spacing of explosion-proof and position-limiting action Sealing ring.

Above-mentioned technical purpose of the present utility model has the technical scheme that

A kind of explosion-proof position limiting sealed circle, including being embedded at the negative pole sealing ring of lithium ion battery negative end, described explosion-proof limit Position sealing ring also includes the positive pole sealing ring being embedded at lithium ion cell positive end, and described positive pole sealing ring is with lithium ion battery just The extreme one side conflicted is provided with the claw for fixing positive terminal, is provided with the receiving for accommodating positive terminal between described claw Hole.

Being arranged such, explosion-proof position limiting sealed circle is when the spacing lithium ion battery being used in series, due to the lithium being used in series The positive terminal of ion battery two adjacent sections is connected with negative pole end, therefore the spacing negative pole end of negative pole sealing ring, positive pole sealing ring is spacing just Extremely.Claw in positive pole sealing ring for coordinating the boss of positive terminal block, receiving hole to positive terminal provide with adjacent lithium from The space of sub-battery tail end series connection.Agree with the profile of lithium ion battery.When lithium ion battery is used in series and to be provided with this explosion-proof During position limiting sealed circle, explosion-proof position limiting sealed circle, while playing explosion-proof, saves adjacent lithium ion battery to two and plays limit Position effect, makes two adjacent sections lithium ion battery coaxial, prevents from clashing into due to the external world and making arrangement close battery ejection receiving portion Position.

Arrange further: state the connection ring that positive pole sealing ring also includes drawing from negative pole sealing ring.

Being arranged such, the natural width connecting ring makes to have between positive pole sealing ring and negative pole sealing ring enough space The boss of lithium ion cell positive end, connects ring and also plays cushioning effect between positive pole sealing ring and negative pole sealing ring, it is possible to Bear certain moment of torsion during installation, prevent owing to external force when installing makes positive pole sealing ring and negative pole sealing ring cannot keep coaxial Position.

Arrange further: described connection ring removably connects with negative pole sealing ring.

Being arranged such, positive pole sealing ring can be used separately with negative pole sealing ring.When multiple lithium ion batteries are used in series Time, two joint lithium ion batteries only need a positive pole sealing ring and a negative pole sealing ring from beginning to end, and middle lithium ion battery is each Joint is required for a positive pole sealing ring and negative pole sealing ring, and connection ring makes explosion-proof spacing close with the detachable setting of negative pole sealing ring The versatility of seal strengthens.

Arrange further: described connection ring is wholely set with positive pole sealing ring.

It is arranged such, under the precondition that connection ring and negative pole sealing ring removably connect, ensure that versatility Meanwhile, the complicated degree being wholely set when reducing dismounting of ring and positive pole sealing ring is connected.

Arranging further: described connection ring is provided with some snap fingers, described negative pole sealing ring sets near the one side connecting ring There is the button hole matched with snap finger.

It is arranged such, on the premise of in positive pole sealing ring and negative pole sealing ring, any one maintains static, snap finger and button The connected mode in hole has only to i.e. to connect any one applying pressure in positive pole sealing ring and negative pole sealing ring by the two, Only need during dismounting any one applying pulling force in positive pole sealing ring and negative pole sealing ring can be taken apart.

Arrange further: be provided with outside described positive pole sealing ring, connection ring, negative pole sealing ring and three is encompassed in interior guarantor Sheath.

Be arranged such, protection set by positive pole sealing ring, to connect ring, negative pole sealing ring spacing, when preventing by foreign impacts Limit effect is lost due to impulsive force.

Arrange further: between described protection set and claw, be provided with buffer gap.

Being arranged such, owing to the explosion-proof position limiting sealed more common plastic of circle size is less, therefore deviation when manufacturing is big, between buffering The existence of gap tolerance, reduce make because of the existence of deviation explosion-proof position limiting sealed circle cannot the situation of normal mounting, i.e. increase The allowed band of large deviation, improves versatility.

Arrange further: described explosion-proof position limiting sealed circle uses polypropylene to make.

Being arranged such, polypropylene is heat-resisting, corrosion-resistant as one, the plastics that density is little, it is adaptable to small plastic product.When Lithium ion battery is once leakage, and other lithium ion batteries in series connection group can be played protective action by its corrosion resistance.

As preferably, the tolerance of the outside dimension of described explosion-proof position limiting sealed circle is ± 0.05mm.

Being arranged such, the existence of deviation improves the qualification rate after explosion-proof position limiting sealed circle is produced, explosion-proof spacing On the premise of sealing ring is provided with buffer gap, the deviation of 0.05 millimeter belongs in tolerance interval, therefore reduces production precision and want Ask, reduce production difficulty, improve production efficiency.

By using technique scheme, this utility model hinge structure is compared to be had: preventing lithium ion battery On the premise of internal leakage or blast, it is ensured that series connection Battery pack remains coaxial state, and series connection is good, do not rush because of the external world Hit and the situations such as dislocation occur, it is ensured that be energized unimpeded.And this utility model can dismantle as single positive pole sealing ring or negative pole Sealing ring, versatility is high.

Accompanying drawing explanation

Fig. 1 is the unprotect set 3 D stereo schematic diagram of explosion-proof position limiting sealed circle；

Fig. 2 is connection ring and the negative pole ring structure schematic diagram of explosion-proof position limiting sealed circle；

Fig. 3 is the band protection set 3 D stereo schematic diagram of explosion-proof position limiting sealed circle.

In figure: 1, negative pole sealing ring；2, positive pole sealing ring；3, claw；4, receiving hole；5, ring is connected；6, button hole；7, protection Set；8, buffer gap；9, snap finger.

Detailed description of the invention

Referring to figs. 1 through Fig. 3, explosion-proof position limiting sealed circle is described further.

Embodiment 1: a kind of explosion-proof position limiting sealed circle, it is adaptable to lithium ion battery explosion-proof, be particularly suited for more piece lithium from The situation that sub-battery is used in series, it is possible to simultaneously work as the effect that explosion-proof and spacing multi-section lithium ion battery is coaxial.This explosion-proof limit Position sealing ring can be explosion-proof structure be prior art, referring in particular to Application No. CN201320803906.8 in Chinese patent In description, therefore illustrate the most separately in this utility model and accompanying drawing or indicate.

With reference to Fig. 1, this explosion-proof position limiting sealed encloses the structure of spacing multi-section lithium ion galvanic action and includes that positive pole seals Circle 2, negative pole sealing ring 1, and the connection ring 5 between positive pole sealing ring 2 and negative pole sealing ring 1.

Negative pole sealing ring 1 is for the negative pole end of lithium ion battery, and the side of negative pole end is plane, therefore uses the most common Explosion-proof position limiting sealed circle can play a role.

Positive pole sealing ring 2 is for the positive terminal of lithium ion battery, and the lithium ion battery mentioned in this utility model is cylinder Shape, positive terminal are the profile of end face with boss, negative pole end.

The positive terminal of lithium ion battery is complex-shaped in negative pole end, in order to make the boss of positive terminal have abundant receiving empty Between, with reference to Fig. 1, positive pole sealing ring being provided with claw 3, claw 3 is conflicted in positive terminal boss surrounding.Claw 3 is that a circle is circular Arrange, boss is protected completely.Claw 3 is conflicted and is set to fillet at boss bottom, and rounded shapes can buffer from the external world Impulsive force.Owing to the positive terminal of lithium ion battery is designed with metallic foil seal with negative pole end, and positive terminal and negative pole end are to hold Easily there is the position of blast leakage, therefore need to reduce the pressure to positive terminal Yu negative pole end as far as possible.When ambient pressure is unavoidable Time, realize expection purpose by compensator or trimmer pressure.

During due to series connection, two adjacent sections lithium ion battery needs end to end, with reference to Fig. 1, therefore is provided with at the coaxial place of claw 3 Receiving hole 4, this through hole contacts at the negative pole end of previous joint lithium ion battery for the positive terminal boss accommodating lithium ion battery.

In order to ensure have adequate space to make the positive terminal of positive pole sealing ring 2 contact at negative pole end, with reference to Fig. 1, at positive terminal Being connected ring 5 with being provided with between negative pole end, connect ring 5 and arrange for hollow, middle vacancy accommodates positive terminal.The diameter connecting ring 5 is smaller In positive pole sealing ring and negative pole sealing ring, connect the height of ring 5 much smaller than positive pole sealing ring 2 and negative pole sealing ring 1.It is minimum Height be in order to prevent excessive height after, positive terminal cannot contact at the negative pole end of adjacent lithium ion battery.Positive pole sealing ring Diameter and the equal diameters of negative pole sealing ring.Positive pole sealing ring is attached at lithium ion battery with outermost one circle of negative pole sealing ring Outer round surface.

Less with negative pole sealing ring 1 compared with positive pole sealing ring 2 owing to connecting ring 5 diameter, therefore its pulling force that can bear, pressure Power, moment of torsion are the least.In order to ensure the limit effect of the lithium ion battery being arranged in series, at positive pole sealing ring 2, connection ring 5, bear Pole sealing ring 1 is externally provided with protection set 7, protection set 7 by positive pole sealing ring 2, to connect ring 5, negative pole sealing ring 1 fully wrapped around, play Reinforcement effect.The thickness of protection set 7 is minimum, because its whole installation does not contains the shape facilities such as groove, therefore its reliability is high.For Reach this kind of effect, preferably injection one-shot forming manufacture method.

In order to improve the suitability of explosion-proof position limiting sealed circle, connect ring 5 and be preferably wholely set with positive pole sealing ring 2, reference Fig. 2, removably connects with negative pole sealing ring 1.Its structure removably connected is snap finger 9 and button hole 6 fit structure.Snap finger 9 is Three tops are with the bar of kink, and the diameter of button hole 6 is less than kink size, but more than the diameter of bar, when making the two connect Can be by the most spacing.

Embodiment 2: a kind of explosion-proof position limiting sealed circle, is with the difference of embodiment 1, in the present embodiment, with reference to figure 3, protection set 7 at parcel positive pole sealing ring 2, negative pole sealing ring 1, connect on the premise of ring 5, with the claw 3 of positive pole sealing ring 2 it Between be provided with buffer gap 8.Buffer gap 8 is four circular arc cutaway, annular array in protection set 7 in, i.e. protection set 7 with lithium from The most jagged place, existing joint place, contact site of sub-battery, will not affect use during to ensure and to install due to dimensional discrepancy.

Embodiment 3: a kind of explosion-proof position limiting sealed circle, is with the difference of embodiment 1 or 2, in the present embodiment, and positive pole Sealing ring 2, negative pole sealing ring 1, connection ring 5 and protection set 7 all use polypropylene plastics to make, and it manufactures surface accuracy height, It is applicable to the manufacture of small size part.

Above-mentioned there is buffer gap 8 on the premise of, it is possible to suitably relax deviation requirement during production, the margin of tolerance is ± 0.5mm, with polypropylene plastics self with elasticity act on simultaneously, exist adjusted by elasticity at deviation spacing.

Above-mentioned specific embodiment is only that it is not to restriction of the present utility model to explanation of the present utility model, The present embodiment can be made after reading this specification by those skilled in the art as required does not has creative contribution to repair Change, but as long as all being protected by Patent Law in right of the present utility model.

Claims (9)

1. an explosion-proof position limiting sealed circle, including being embedded at the negative pole sealing ring (1) of lithium ion battery negative end, its feature exists In: described explosion-proof position limiting sealed circle also includes the positive pole sealing ring (2) being embedded at lithium ion cell positive end, and described positive pole seals The one side that circle (2) is conflicted with lithium ion cell positive end is provided with the claw (3) for fixing positive terminal, between described claw (3) It is provided with the receiving hole (4) for accommodating positive terminal.

Explosion-proof position limiting sealed circle the most according to claim 1, it is characterised in that: described positive pole sealing ring (2) also includes certainly The connection ring (5) that negative pole sealing ring (1) is drawn.

Explosion-proof position limiting sealed circle the most according to claim 2, it is characterised in that: described connection ring (5) and negative pole sealing ring (1) removably connect.

Explosion-proof position limiting sealed circle the most according to claim 3, it is characterised in that: described connection ring (5) and positive pole sealing ring (2) it is wholely set.

Explosion-proof position limiting sealed circle the most according to claim 4, it is characterised in that: described connection ring (5) is provided with some buttons Pawl (9), described negative pole sealing ring (1) is provided with, near the one side connecting ring (5), the button hole (6) matched with snap finger (9).

Explosion-proof position limiting sealed circle the most according to claim 5, it is characterised in that: described positive pole sealing ring (2), connection ring (5), three is encompassed in interior protection set (7) by outside being provided with of negative pole sealing ring (1).

Explosion-proof position limiting sealed circle the most according to claim 6, it is characterised in that: between described protection set (7) and claw (3) It is provided with buffer gap (8).

Explosion-proof position limiting sealed circle the most according to claim 1, it is characterised in that: described explosion-proof position limiting sealed circle uses poly-third Alkene is made.

Explosion-proof position limiting sealed circle the most according to claim 1, it is characterised in that: the outer diameter ruler of described explosion-proof position limiting sealed circle Very little tolerance is ± 0.05mm.