CN203466231U

CN203466231U - Lithium battery

Info

Publication number: CN203466231U
Application number: CN201320585710.6U
Authority: CN
Inventors: 吕江英
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-03-05
Anticipated expiration: 2023-09-22

Abstract

The utility model discloses a lithium battery. The lithium battery comprises a battery cell body, an outer packaging film, and at least one support element arranged next to the battery cell body and provided with a cavity, wherein the cavity of the support element is provided with an opening facing the battery cell body, and the outer packaging film wraps the battery cell body and the support element. The support element provides a storage space for an electrolyte, and when flat-pressing air exhaust needs to be performed on the lithium battery, the loss of the electrolyte during the air exhaust process is reduced, thus increasing the amount of the electrolyte contained in the lithium battery, and then prolonging the service life of the lithium battery.

Description

Lithium battery

Technical field

The utility model relates to a kind of lithium battery.

Background technology

Lithium battery is generally directly packaged in its inside by battery core body by wrapping film.In manufacturing the process of lithium battery, can carry out preliminary filling to lithium battery, in preliminary filling process, can produce some gases, therefore need to carry out vacuum suction to battery.Existing lithium battery has part electrolyte and is drawn out of in vacuum suction process, thereby forms a kind of lean solution battery, has affected the useful life of battery.

Utility model content

Main purpose of the present utility model is to provide a kind of lithium battery, is intended to reduce the electrolyte waste in pumping process, and the storage area of electrolyte is provided, thereby improves the electrolyte content that lithium battery contains, and then extends the useful life of lithium battery.

To achieve these goals, the utility model provides a kind of lithium battery, at least one that comprises battery core body, wrapping film and be close to the setting of described battery core body has the strutting piece of cavity, the cavity of described strutting piece offers the opening towards described battery core body, and described wrapping film wraps up described battery core body and strutting piece.

Preferably, described strutting piece is provided with the first through hole with the lug adaptation of described battery core body.

Preferably, described strutting piece is provided with the second through hole that some and described cavity communicates.

Preferably, the side that described strutting piece is close to described battery core body arranges, and described side is the surface tangent with the thickness direction of described battery core body.

Preferably, the cross section of the thickness direction along described battery core body of described strutting piece is C font.

Preferably, the cross section of the thickness direction along described battery core body of described strutting piece is E font.

Preferably, the end that described strutting piece contacts with described battery core body has the cambered surface with described battery core body adaptation.

Preferably, the relative direction in the Xiang Yu the other end, end with described battery core body contact of described strutting piece extends to form projection, and described projection is close to the setting of described battery core body surface.

The utility model is by lithium battery inner close fitting battery core body, at least one strutting piece with cavity being set, and the cavity of this strutting piece offers the opening towards battery core body, and wraps up battery core body and strutting piece by wrapping film; The cavity of this strutting piece can store electrolyte, when needs are bled to lithium battery, has reduced the electrolyte waste in pumping process, thereby has improved the electrolyte content that lithium battery contains, and then extended the useful life of lithium battery.

Accompanying drawing explanation

Fig. 1 is the cutaway view of the utility model lithium battery;

Fig. 2 is the end view of the utility model strutting piece;

Fig. 3 is the cutaway view of the first embodiment of the utility model strutting piece;

Fig. 4 is the cutaway view of the second embodiment of the utility model strutting piece;

Fig. 5 is the cutaway view of the 3rd embodiment of the utility model strutting piece;

Fig. 6 is the cutaway view of the 4th embodiment of the utility model strutting piece;

Fig. 7 is the cutaway view of the 5th embodiment of the utility model strutting piece;

Fig. 8 is the cutaway view of the 6th embodiment of the utility model strutting piece;

Fig. 9 is the cutaway view of the 7th embodiment of the utility model strutting piece;

Figure 10 is the cutaway view of the 8th embodiment of the utility model strutting piece.

The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

With reference to Fig. 1, Fig. 1 is the cutaway view of the utility model lithium battery.

The present embodiment provides a kind of lithium battery, comprise battery core body 10, wrapping film 20 and be close at least one strutting piece 30 with cavity 301 that battery core body 10 arranges, the cavity 301 of strutting piece 30 offers the opening 302 towards battery core body 10, wrapping film 20 parcel battery core body 10 and strutting pieces 30.

In the present embodiment, the top of battery core body 10 is provided with lug (not indicating in figure), wherein, in battery core body 10, is filled with electrolyte.

Wrapping film 20 can be aluminum plastic film.

The side that strutting piece 30 is close to battery core body 10 arranges, and wherein, the side of battery core body 10 is the surface tangent with the thickness direction of battery core body 10.Strutting piece 30 is located to the side of battery core body 10, the fixed effect between strutting piece 30 and battery core body 10 is better, and is more convenient for battery core body 10 to bleed.Wherein, the side of battery core body 10 comprises and is provided with relative bottom, the ,Yu top, top of lug and at the top of battery core body 10 and two sides between bottom.When strutting piece 30 is located at the top of battery core body 10, strutting piece 30 is provided with the first through hole (not indicating in figure) with lug adaptation.Because battery core body 10 is provided with two lugs, so this strutting piece 30 arranges two the first through holes.When strutting piece 30 is mounted to battery core body 10, two lugs on battery core body 10 are respectively through each self-corresponding first through hole.

The quantity of strutting piece 30 can arrange according to actual needs, in the present embodiment, two strutting pieces 30 is set, and two sides at battery core body 10 respectively arrange a strutting piece 30.It should be noted that in other embodiments, also can adopt other modes to arrange.

Strutting piece 30 can be made by metal, plastic cement or wood materials, and manufactured materials should have certain hardness, and can under atmospheric pressure, keep original shape.It should be noted that strutting piece 30 also can be made by other materials, as long as can meet the stiffness conditions in the present embodiment.

Strutting piece 30 is strip substantially, the length of strutting piece 30 should be corresponding with the length of a side of its residing battery core body 10, and the thickness of strutting piece 30 also should be corresponding with the thickness of battery core body 10, when wrapping film 20 is by after battery core body 10 and strutting piece 30 encapsulation, strutting piece 30 should form a level and smooth surface with battery core body 10.

Because the cavity 301 of strutting piece 30 offers the opening towards battery core body 10, when lithium battery being carried out to preliminary filling or cause inside battery to produce gas due to other reasons, the gas producing can be stored in this cavity 301, and part electrolyte also can be stored in this cavity 301.

The utility model is by arranging at least one strutting piece 30 with cavity 301 at lithium battery inner close fitting battery core body 10, and the cavity 301 of this strutting piece 30 offers the opening 302 towards battery core body 10, and by wrapping film 20 parcel battery core body 10 and strutting pieces 30; This cavity 301 provides the storage area of electrolyte, when needs are bled to lithium battery, has reduced the electrolyte waste in pumping process, thereby has improved the electrolyte content that lithium battery contains, and then extended the useful life of lithium battery.

Further, with reference to Fig. 2, Fig. 2 is the end view of the utility model strutting piece, strutting piece 30 is provided with some the second through holes 303 that communicate with cavity 301, when lithium battery is bled, gas in cavity 301 can be drawn out of by the second through hole 303, has accelerated the speed of bleeding, and has improved the production efficiency of product.The size and number that it should be noted that the second through hole 303 can arrange according to actual needs.

Further, with reference to Fig. 3, Fig. 3 is the cutaway view of the first embodiment of the utility model strutting piece, and the cross section of the thickness direction along battery core body 10 of strutting piece 30 is the setting of C font, this set-up mode has larger cavity 301 and opening 302, and fixed effect is better.The strutting piece 30 that the present embodiment provides is preferably located at top and/or the bottom of battery core body 10.

Further, with reference to Fig. 4, Fig. 4 is the cutaway view of the second embodiment of the utility model strutting piece, and based on a upper embodiment, in the present embodiment, the end contacting with battery core body 10 of strutting piece 30 has the cambered surface 304 with battery core body 10 adaptations.Because the side of battery core body 10 generally has an arc surface, so being end that strutting piece 30 contacts with battery core body 10, preferred implementation there is the cambered surface 304 with the side adaptation of battery core body 10, by this cambered surface 304, between strutting piece 30 and battery core body 10, can better coordinate, thereby form a level and smooth surface.The strutting piece 30 that the present embodiment provides is preferably located at the side with arc surface of battery core body 10, is generally located at the side of battery core body 10.

Further, the first embodiment based on strutting piece 30, and with reference to Fig. 5, Fig. 5 is the cutaway view of the 3rd embodiment of the utility model strutting piece, the cross section of the thickness direction along battery core body 10 of strutting piece 30 is the setting of E font, the strutting piece 30 of this set-up mode has better fixed effect, has improved the fastness of strutting piece 30.The strutting piece 30 that the present embodiment improves is preferably located at top and/or the bottom of battery core body 10.

Further, the 3rd embodiment based on strutting piece 30, and with reference to Fig. 6, Fig. 6 is the cutaway view of the 4th embodiment of the utility model strutting piece.The end contacting with battery core body 10 of strutting piece 30 has the cambered surface 304 with battery core body 10 adaptations.The strutting piece 30 that the present embodiment provides, on the basis of the 3rd embodiment, further makes better to coordinate between strutting piece 30 and battery core body 10, thereby forms a level and smooth surface.The strutting piece 30 that the present embodiment provides is preferably located at the side with arc surface of battery core body 10, is generally located at the side of battery core body 10.

Further, the first embodiment based on above-mentioned strutting piece 30, the second embodiment, the 3rd embodiment and the 4th embodiment, and with reference to Fig. 7, Fig. 8, Fig. 9 and Figure 10, Fig. 7 is the cutaway view of the 5th embodiment of the utility model strutting piece, Fig. 8 is the cutaway view of the 6th embodiment of the utility model strutting piece, Fig. 9 is the cutaway view of the 7th embodiment of the utility model strutting piece, and Figure 10 is the cutaway view of the 8th embodiment of the utility model strutting piece.The relative direction in Xiang Yu the other end, end with 10 contacts of battery core body of strutting piece 30 extends to form projection 305, and projection 305 is close to the 10 surface settings of battery core body.The present embodiment, by projection 305 is set, makes the fixed effect between strutting piece 30 and battery core body 10 better, and has further improved the intensity of strutting piece 30.

These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a lithium battery, comprise battery core body and wrapping film, it is characterized in that, also comprise that at least one that be close to the setting of described battery core body has the strutting piece of cavity, the cavity of described strutting piece offers the opening towards described battery core body, and described wrapping film wraps up described battery core body and strutting piece.

2. lithium battery as claimed in claim 1, is characterized in that, described strutting piece is provided with the first through hole with the lug adaptation of described battery core body.

3. lithium battery as claimed in claim 1, is characterized in that, described strutting piece is provided with the second through hole that some and described cavity communicates.

4. lithium battery as claimed in claim 1, is characterized in that, the side that described strutting piece is close to described battery core body arranges, and described side is the surface tangent with the thickness direction of described battery core body.

5. lithium battery as claimed in claim 4, is characterized in that, the cross section of the thickness direction along described battery core body of described strutting piece is C font.

6. lithium battery as claimed in claim 5, is characterized in that, the end that described strutting piece contacts with described battery core body has the cambered surface with described battery core body adaptation.

7. the lithium battery as described in claim 5 or 6, is characterized in that, the relative direction in the Xiang Yu the other end, end with described battery core body contact of described strutting piece extends to form projection, and described projection is close to the setting of described battery core body surface.

8. lithium battery as claimed in claim 4, is characterized in that, the cross section of the thickness direction along described battery core body of described strutting piece is E font.

9. lithium battery as claimed in claim 8, is characterized in that, the end that described strutting piece contacts with described battery core body has the cambered surface with described battery core body adaptation.

10. lithium battery as claimed in claim 8 or 9, is characterized in that, the relative direction in the Xiang Yu the other end, end with described battery core body contact of described strutting piece extends to form projection, and described projection is close to the setting of described battery core body surface.