CN208062191U

CN208062191U - A kind of core strueture and lithium ion battery of lithium ion battery

Info

Publication number: CN208062191U
Application number: CN201820122960.9U
Authority: CN
Inventors: 韩承宋; 尚随军; 郑荣鹏
Original assignee: SUZHOU YULIANG BATTERY Co Ltd
Current assignee: SUZHOU YULIANG BATTERY Co Ltd
Priority date: 2018-01-25
Filing date: 2018-01-25
Publication date: 2018-11-06
Anticipated expiration: 2028-01-25

Abstract

The utility model provides a kind of core strueture of lithium ion battery, it includes battery core, battery core has the metal shell as anode member, the opposite end of metal shell is respectively formed first end and the second end, positive component is installed on first end, is set with thermal shrinkable sleeve outside anode member, the first set end of thermal shrinkable sleeve extends at first end, second set of opposite end of thermal shrinkable sleeve extends towards the direction of the second end, and the second end exposes second set of end.The utility model additionally provides a kind of lithium ion battery.The utility model can prevent the loose phenomenon of battery core compared to the prior art so that the structure of battery mould is more firm, while reducing the material materials for thermal shrinkable sleeve, saves cost.

Description

A kind of core strueture and lithium ion battery of lithium ion battery

Technical field

The utility model is related to a kind of lithium-ion electric cores, a kind of core strueture in particular to lithium ion battery and Lithium ion battery.

Background technology

In the assembling of lithium ion battery, especially in the assembling of cylindrical lithium ion battery, after battery core is completed, In order to realize the anti-short-circuit purpose for battery core, usually it is required for, in one thermal shrinkable sleeve of battery core outer cladding, effectively realizing for whole The insulation function of a battery core, and the processing needs such as coding that can also be easy to implement battery core.

Using battery core as when module, need to be adhered on holder, but since thermal shrinkable sleeve has enveloped the both ends of battery core, The positive terminal and negative pole end of battery core have been enveloped, thus holder is more being formed viscous with thermal shrinkable sleeve outside battery core in fact It connects, thus the battery core inside thermal shrinkable sleeve is in long-term use, is vulnerable to the factors such as vibrations and generates loose phenomenon, to reduce The stability of integral battery module.

Utility model content

In consideration of it, the utility model provides a kind of electricity for the lithium ion battery that can be effectively prevented battery core loose phenomenon Cored structure and lithium ion battery.

On the one hand, the utility model provides a kind of core strueture of lithium ion battery comprising battery core, battery core, which has, to be made For the metal shell of anode member, the opposite end of metal shell is respectively formed first end and the second end, on first end Positive component is installed, is set with thermal shrinkable sleeve outside anode member, the first set end of thermal shrinkable sleeve extends at first end, thermal shrinkable sleeve Second set of opposite end towards the second end direction extend, the second end expose second set of end.

Further, the end face at above-mentioned second set of end terminates at the side wall of anode member, the end face at second set of end and second Distance is formed between end, the height of the distance is 10 ± 2mm.

Further, the height of above-mentioned distance is the 1/6-1/10 of the side wall length of anode member.

Further, above-mentioned anode member is column type metal shell.

Further, above-mentioned anode member is cylindrical metal container.

Further, above-mentioned thermal shrinkable sleeve is plastics leather sheath.

On the other hand, the utility model provides a kind of lithium ion battery comprising battery body, the interior setting of battery body There are holder, at least a core strueture to be bonded holder by the second end, which is a kind of above-mentioned lithium ion battery Core strueture.

The core strueture and lithium ion battery of a kind of lithium ion battery provided by the utility model, compared to the prior art It has the following advantages：

1) original assembling mode of thermal shrinkable sleeve is improved, only carries out sealing for thermal shrinkable sleeve in the big positive terminal of insulation requirements, and Structure is sealed in the small negative pole end cancellation thermal shrinkable sleeve of insulation requirements, this is because positive terminal 14 is in battery core top inner ring, with Cathode exposed end can ensure that insulation function is constant not in approximately the same plane, so that battery core is passing through glue with holder When glutinous mode is attached to form battery modules, integrally because of no practical connecting bracket loose phenomenon will not occur for battery core, So that the structure of battery mould is more firm, its stability is improved；

2) as a result of above-mentioned thermal shrinkable sleeve structure type, the material materials for thermal shrinkable sleeve can be effectively reduced, It is used so as to achieve the purpose that save cost and reduce resource.

Description of the drawings

By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to this practicality Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：

Fig. 1 is a kind of structural schematic diagram of the core strueture for lithium ion battery that the utility model embodiment provides；

Fig. 2 is a kind of structural schematic diagram for lithium ion battery that the utility model embodiment provides.

Specific implementation mode

The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure Completely it is communicated to those skilled in the art.

Embodiment one：

Referring to Fig. 1 to Fig. 2, a kind of battery core knot for lithium ion battery that the utility model embodiment one provides is shown in figure Structure comprising battery core 1, battery core 1 have a metal shell as anode member 11, and the opposite end of metal shell is respectively formed the One end 12 and the second end 13 are equipped with positive component 14 on first end 12, thermal shrinkable sleeve 2 are set with outside anode member 11, The first set end 21 of thermal shrinkable sleeve 2 extends at first end 12, and second set of opposite end 22 of thermal shrinkable sleeve 2 is towards the second end 13 Direction extend, the second end 13 expose second set of end 22.

Referring to Fig. 2, a kind of lithium ion battery that the utility model embodiment one provides is shown in figure comprising battery sheet Body, holder 3 is provided in battery body, and multiple above-mentioned core struetures pass through the second end 13 and are bonded holder 3.

Referring to Fig. 1 to Fig. 2, a kind of thermal shrinkable sleeve of the core strueture for lithium ion battery that the utility model embodiment one provides Assemble method includes the following steps：

Step 1：Prepare battery core 1, battery core 1 has the metal shell as anode member 11, the opposite end of metal shell It is respectively formed first end 12 and the second end 13, positive component 14 is installed on first end 12；

Step 2：Prepare thermal shrinkable sleeve 2, thermal shrinkable sleeve 2 has opposite first set end 21 and second set of end 22, by first set end 21 cladding first ends 12 continue to coat thermal shrinkable sleeve 2 along the side wall of anode member 11 so that second set of end 22 towards second The direction of end 13 extends, and the second end 13 is exposed to second set of end 22.

Wherein, above-mentioned anode member 11 is specifically as follows cylindrical metal container；Above-mentioned thermal shrinkable sleeve 2 specifically can be with For plastics leather sheath.

Embodiment two：

Other are identical as described in embodiment one, the difference is that improving further below：The end face at second set of end 22 The side wall of anode member 11 is terminated at, forms distance A between the end face and the second end 13 at second set of end 22.

The height of distance A is 10 ± 2mm, and battery core length is 80mm.Contrast on effect is specific as follows caused by distance A (experiment condition is that holder shook for 1 week in the operating mode that shockproofness is 7.1mm/s in module)：

Thus, since the battery core in thermal shrinkable sleeve does not rotate compared to the prior art, illustrate to use the utility model Structure after, the bonding strength of battery core and holder is got higher.

To sum up, the core strueture and lithium ion battery of a kind of lithium ion battery provided by the utility model, compared to existing There is technology to has the following advantages：

Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.

Claims

1. a kind of core strueture of lithium ion battery, which is characterized in that including battery core (1), the battery core (1), which has, is used as cathode The opposite end of the metal shell of component (11), the metal shell is respectively formed first end (12) and the second end (13), Positive component (14) is installed on the first end (12), thermal shrinkable sleeve (2), the heat are set with outside the anode member (11) The first set end (21) of contracting set (2) extends at the first end (12), second set of opposite end of the thermal shrinkable sleeve (2) (22) extend towards the direction of the second end (13), the second end (13) exposes second set of end (22).

2. a kind of core strueture of lithium ion battery according to claim 1, which is characterized in that second set of end (22) End face terminate at the side walls of the anode member (11), the end face and the second end (13) of second set of end (22) it Between form distance (A), the height of the distance (A) is 10 ± 2mm.

3. a kind of core strueture of lithium ion battery according to claim 2, which is characterized in that the height of the distance (A) Degree is the 1/6-1/10 of the side wall length of the anode member (11).

4. according to a kind of core strueture of any lithium ion batteries of claim 1-3, which is characterized in that the cathode portion Part (11) is column type metal shell.

5. a kind of core strueture of lithium ion battery according to claim 4, which is characterized in that the anode member (11) For cylindrical metal container.

6. a kind of core strueture of lithium ion battery according to claim 1, which is characterized in that the thermal shrinkable sleeve (2) is Plastics leather sheath.

7. a kind of lithium ion battery, which is characterized in that including battery body, holder (3) is provided in the battery body, at least One core strueture is bonded the holder (3) by the second end (13), and the core strueture is claim 1-6 any described A kind of core strueture of lithium ion battery.