CN202662684U

CN202662684U - Lithium battery core

Info

Publication number: CN202662684U
Application number: CN2012202193965U
Authority: CN
Inventors: 罗小军
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-11
Filing date: 2012-05-11
Publication date: 2013-01-09
Anticipated expiration: 2022-05-11

Abstract

The utility model discloses a lithium battery core, which comprises a closed shell and a roll core which is fixedly arranged in the closed shell, wherein the closed shell comprises a shell and a cap; the shell is provided with an open part which is positioned on the top of the shell; the cap is provided with a matching part; the matching part is in a socket fit with the open part; at the socket fit part, the matching part is provided with an outer surface and the open part is provided with an inner surface; the outer surface is fixedly adhered to the inner surface; a concave annular groove and a concave supporting groove which is connected with the concave annular groove are formed in the outer surface of the matching part of the cap; and a part corresponding to the open part of the metal shell is pressed into the concave annular groove and the concave supporting groove. The concave supporting groove is additionally arranged in the matching part of the cap, so that the adhesion area between the outer surface of the cap and the inner surface of the shell is increased; and thus, the fixation strength of the cap and the shell is increased and the bearing capacity of interior of the battery core is increased.

Description

A kind of lithium battery electric core

Technical field

The utility model is about a kind of battery, comprises lithium battery, vanadium cell, super capacitor etc.

Background technology

The finished product lithium battery comprises battery core, protection circuit plate, plastic frame (or upper plastic cover) and nameplate paper.The effect of protection circuit plate is to prevent that battery from being overcharged and by overdischarge.

A kind of existing lithium battery as shown in Figure 1; this lithium battery comprises battery core and protection circuit plate; battery core comprises block 1, shell 2, volume core 7 and electrolyte; block 1 consists of sealing shell with shell 2 welding; electrolyte and volume core 7 are sealed in the sealing shell, and namely electrolyte and volume core are placed in the confined space of battery core.

Existing aluminum-shell lithium battery shell 2 fixedly is the way that adopts Laser Welding with the sealing of block 1, with laser the slit fusing between 1 of shell 2 peristomes and block and integrally welded, the box hat lithium battery is except wanting laser welding cap, also want the laser welding negative, this method exists that efficient is low, the low deficiency of solder yield.

The utility model content

The purpose of this utility model is for the deficiencies in the prior art, provides a kind of and can make more firmly battery core of plastics block and aluminum hull shell bonding.

For achieving the above object, the utility model has adopted following technical scheme: a kind of battery core, comprise sealing shell and be fixed on the volume core of described sealing shell inside, described sealing shell comprises shell and block, described shell has the peristome that is positioned at its top, material is aluminium, described block material is plastics, described block comprises annular auxiliary section, and described auxiliary section cooperates with described peristome socket, and described peristome is inserted in described auxiliary section, at socket place, described auxiliary section has outer surface, and described peristome has inner surface, and described outer surface and described inner surface are adhesively fixed.Have the auxiliary section of height by setting, make outer surface and inner surface have certain coincidence (applying) length and be convenient to bonding.

Further, the described outer surface in the block auxiliary section molds hollow toroid groove and recessed the groove that links to each other with the hollow toroid groove, and part corresponding to the described peristome of metal shell is pressed in described hollow toroid groove and recessed the groove.

Further, block a shot described hollow toroid groove, recessed groove is not identical in the different position depths.

The beneficial effects of the utility model are: increased recessed the groove that links to each other with the hollow toroid groove in the block auxiliary section, strengthened the bond area between block outer surface and the housing inner surface, thereby increase the constant intensity of block and housing, and increased the bearing capacity of battery core inside.

Description of drawings

Fig. 1 is the structural representation of existing lithium battery;

Fig. 2 is the utility model general structure generalized section:

Fig. 3 is that the embodiment master looks schematic diagram;

Fig. 4 is that schematic diagram is looked on an embodiment left side;

Fig. 5 is that Fig. 3 is along the cross-sectional schematic of A-A direction;

Fig. 6 is that Fig. 3 is along the cross-sectional schematic of B-B direction.

Embodiment

By reference to the accompanying drawings the utility model is described in further detail below by embodiment.

As shown in Figure 2, battery battery core comprises plastics block 1, metal shell 2, has volume core 7 and the electrolyte of two electrodes 10, and plastics block 1 fixes the formation sealing shell with metal shell 2 with adhesive method, and electrolyte and volume core are sealed in this sealing shell.

Shell 2 materials are aluminium, has the peristome 8 that is positioned at its top, 1 material of blocking a shot is plastics, and block comprises annular auxiliary section 11, and the annular auxiliary section 11 of blocking a shot is socketed with shell aperture section 8 and cooperates, block auxiliary section 11 is inserted in shell aperture section 8, at socket place, the auxiliary section has outer surface 12, and peristome has inner surface 13, coated with adhesive between outer surface 12 and inner surface 13 makes block 1 and shell 2

Be adhesively fixed.Have the auxiliary section of height by setting, make inner surface and outer surface have certain coincidence (applying) length and be convenient to bonding.

Go out two and run through through hole 9 block 1 is one-body molded, two electrodes of volume core 7 respectively run through through hole 9 from one and pass, and clamp-on binding agent running through through hole 9, electrode 10 sealings be fixed on the block.

Outer surface 12 in block auxiliary section 11 molds a hollow toroid groove 31, and the part 32 of metal shell 2 correspondences is pressed into 31 li of hollow toroid grooves.Namely can form projection by the inner surface 13 at the metal shell peristome, and at block outer surface 12 formation pits, by being clasped of projection and pit, realize the auxiliary bond area of fixing and adding big lip cap and shell of block and metal shell.

Fig. 2 shows, and the position 32 corresponding with block groove 31 that be shell left surface, right flank is pressed in the groove of the left surface of block, right flank, and actual is that all compress in the groove of block a shot leading flank, trailing flank at leading flank, trailing flank and the block groove 31 corresponding positions 32 of shell.

A kind of battery cap, as shown in Figure 3, Figure 4, mold a hollow toroid groove 31 at block cooperation place outer surface 12, (recessed groove 33 can be vertical such as Fig. 2 with cannelure 31 to mold several recessed grooves 33 that link to each other with cannelure 31 along cannelure 31, also can with 31 one-tenth one of the cannelure angles less than 90 degree), the part 32 of metal shell 2 correspondences is pressed into 33 li of hollow toroid groove 31, recessed grooves.

Leading flank, trailing flank respectively have 4 of recessed grooves, such as Fig. 3; Left surface, right flank respectively have 1 of recessed groove, such as Fig. 4.

Because shell aperture section and block auxiliary section hollow toroid groove, recessed position corresponding to groove are all compressed in the auxiliary section hollow toroid groove of blocking a shot, recessed the groove, also form and the auxiliary section hollow toroid groove of blocking a shot, recessed hollow toroid groove, recessed groove that groove shape is identical at shell aperture section outer surface, just length, width, depth dimensions are smaller.

The depth of block auxiliary section hollow toroid groove, recessed groove can be not identical, and is darker than recessed groove 41 such as recessed groove 40 of Fig. 5, darker than hollow toroid groove 31 other positions at 42 position such as Fig. 6 hollow toroid groove 31.Run through the position that through hole do not conflict with block can be suitably dark so that fixing, bond area increases better effects if.

The utility model lithium battery comprises quadrate lithium battery, cylindrical lithium battery, the shape side of the being respectively body cylindrical body of block, cylindrical tube shape body.

Above content is in conjunction with concrete execution mode further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims

1. lithium battery electric core, comprise sealing shell and be fixed on the volume core of described sealing shell inside, described sealing shell comprises shell and block, described shell has the peristome that is positioned at its top, described block has the auxiliary section, described auxiliary section cooperates with described peristome socket, at socket place, described auxiliary section has outer surface and described peristome has inner surface, described outer surface and described inner surface are adhesively fixed, it is characterized in that: the described outer surface in the block auxiliary section molds hollow toroid groove and recessed the groove that links to each other with described hollow toroid groove, and part corresponding to the described peristome of metal shell is pressed in described hollow toroid groove and recessed the groove.

2. a kind of lithium battery electric core as claimed in claim 1 is characterized in that: the described hollow toroid groove of blocking a shot, recessed groove are not identical in the different position depths.