CN207925607U - Battery core and electrochemical appliance with it - Google Patents

Abstract

The utility model discloses a kind of battery core and with its electrochemical appliance, battery core includes electrode assembly and support element, and there is electrode assembly first through hole, support element to be set to first through hole, wherein the second through-hole is provided on support element.Battery core according to the present utility model, by wearing support element in electrode assembly, support element can be used for supporting electrode assembly, so as to improve the structural stability of battery core, battery core is effectively reduced in production or storing process, due to the case where battery core caused by outer force effect is damaged or damage, and then the performance of battery core can be improved.

Description

Battery core and electrochemical appliance with it

Technical field

The utility model is related to battery technology fields, specifically, more particularly to a kind of battery core and the electrochemistry with it Device.

Background technology

Lithium ion battery has many advantages, such as that energy density is high, has extended cycle life, memory-less effect, flexible shapes are changeable, The fields such as consumer electronics, power-equipment, storage device have been more and more widely used.Not with mobile device and technology Disconnected development, client constantly propose new requirement to lithium ion battery product design, size, performance etc., occur in the market it is rectangular, A variety of patterns such as arc, cylinder.

Soft Roll cylinder battery core is typically one hard shell of surface cover outside battery core, then with packaging bag package casing, lug It can stretch out from both ends, be handled just using necking having one piece of insulation spacer, shell both ends between both ends battery core and shell end to end It is lockked in by gasket, battery core.When preparing this Soft Roll cylinder battery core, copper foil, the aluminium foil of battery core inner ring are easy to crumple, and electricity The structural instability of core, durings cycle, high temperature storage etc., pole piece expansion can cause battery core inner ring to collapse, deteriorate in battery core The pole piece interface of circle, and then influence battery core performance.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries Go out a kind of battery core, the battery core has the advantages that stable structure, functional.

The utility model also proposes a kind of electrochemical appliance, and the electrochemical appliance includes above-mentioned battery core.

According to the battery core of the utility model embodiment, including：Electrode assembly and support element, the electrode assembly have first Through-hole, the support element are set to the first through hole, wherein the second through-hole is provided on the support element.

According to the battery core of the utility model embodiment, by wearing support element in electrode assembly, support element can be used for Support electrode assembly is effectively reduced battery core in production or storing process so as to improve the structural stability of battery core, Due to the case where battery core caused by outer force effect is damaged or damage, and then the performance of battery core can be improved.On support element Two through-holes can be connected to the electrolyte of battery core inner support member both sides, so as to accelerate the infiltration of electrolyte.

Some embodiments according to the present utility model, in the short transverse of the support element, the height of the electrode assembly Height of the degree more than the support element.It is more than support by the way that the length of electrode assembly on the axis direction of battery core, is arranged as a result, The length of part, the burr that can be formed to avoid support element both ends end pierce through diaphragm, cause cathode sheet and sun in electrode assembly The situation of pole pole piece short circuit, so as to improve the security performance of battery core.

Some embodiments according to the present utility model, second through-hole include third through-hole, the third through-hole center Point-blank, the third through-hole center line and the angle of the electrode assembly short transverse are the first angle to line, described First angle is more than zero degree.Thus, it is possible to it is connected to the area of space of support element both sides, since electrolyte is distributed with around battery core, Third through-hole can be connected to the electrolyte of different zones, so as to accelerate the infiltration of electrolyte.Simultaneously in cyclic process, cathode Electrolyte between pole piece and anode pole piece can be preferentially gradually consumed, and the electrolyte in battery core central space can pass through third Through-hole quickly adds between cathode sheet and anode pole piece, thereby may be ensured that the cycle performance of electrolyte, improves battery core Performance.

Further, second through-hole includes fourth hole, and the fourth hole center line is point-blank, described Fourth hole center line and the angle of the electrode assembly short transverse are the second angle, and second angle is more than zero degree.By This, fourth hole can assist third through-hole, so as to improve the circulation of electrolyte, accelerate the infiltration of electrolyte, in turn It can ensure the cycle performance of electrolyte.

In some embodiments of the utility model, the first angle number of degrees are more than the second angle number of degrees.As a result, Third through-hole can guide electrolyte from fourth hole and flow to different directions, so as to improve the zone of action of electrolyte.

In some embodiments of the utility model, the first angle number of degrees are equal with the second angle number of degrees.By This, can make the flow direction of electrolyte form certain rule and inertia, so as to improve the flow velocity of electrolyte.

Some embodiments according to the present utility model, second through-hole include fifth hole, the fifth hole center Line is broken line, and the broken line includes the first broken line, and first broken line and the angle of the electrode assembly short transverse are big In zero degree.Thus, it is possible to expand the size of fifth hole, to improve the circulation of fifth hole.

Further, the fifth hole center line is broken line, and the broken line includes the second broken line, second broken line Section is parallel with the battery core short transverse.Thus, it is possible to expand the size of fifth hole, to improve the circulation of fifth hole Amount.

The center line of some embodiments according to the present utility model, second through-hole includes segmental arc.Thus, it is possible to carry The flowing smoothly property of high electrolyte.

Some embodiments according to the present utility model, the support element is cylindrical in shape or tabular.The support element of tubular as a result, The contact area of support element and battery core can be expanded, so that support element can preferably support battery core.Flat support Part can be relatively easily inserted into battery core, more convenient operation.

Some embodiments according to the present utility model, the support element are stainless steel part or ceramic member.Support element had been both as a result, The effect that support battery core can be met, improves the structural stability of battery core, can also avoid support element by electrolytic corrosion with dirt The case where contaminating electrolyte.

Some embodiments according to the present utility model further include：Shell, the shell include first end and second end Portion, the electrode assembly and the support element are set in the shell；First gasket, first gasket are set to described first End；Second gasket, second gasket are set to the second end.Shell, the first gasket and the second gasket can incite somebody to action as a result, Electrode assembly is surrounded, and so as to guard electrode component, is improved the structural strength of battery core, is prevented electrode assembly by outside It squeezes or collides and deform, while can also prevent battery core in cycle, storing process, electrode assembly expansion squeezes battery core, may be used also To provide space for storage electrolyte.

In some embodiments of the utility model, the first end is provided with the first closing in portion, first gasket Positioned at the closing in portion close to the side of the enclosure interior, the second end is provided with the second closing in portion, and described second Gasket is located at the side of the close enclosure interior in the closing in portion.Thus, it is possible to which the first gasket and the second gasket are surrounded Get up, in order to the installation and fixation of the first gasket and the second gasket, can also seal the first gasket, the second gasket and shell it Between gap, so as to store electrolyte.

In some embodiments of the utility model, at least one of first gasket and second gasket are equipped with Through hole.Thus, it is possible to which part through hole is configured to lug hole, in order to which lug stretches out battery core, will can also partly run through Hole is configured to electrolysis fluid apertures, to inject the electrolyte into battery core.

In some embodiments of the utility model, at least one of first gasket and second gasket are insulation Part.Thus, it is possible to which insulate battery core and the external world, avoid the situation of battery core electric leakage or short circuit.

According to the electrochemical appliance of the utility model embodiment, including：Battery core, the battery core are according to any one of as above The battery core.

According to the electrochemical appliance of the utility model embodiment, by wearing support element in the middle part of battery core, support element can Battery core is effectively reduced in production or storing process so as to improve the structural stability of battery core for support battery core In, due to the case where battery core caused by outer force effect is damaged or damage, and then the performance of battery core can be improved.On support element Through-hole can be connected to the electrolyte of battery core inner support member both sides, so as to accelerate the infiltration of electrolyte.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description In become apparent, or recognized by the practice of the utility model.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment Become apparent and is readily appreciated that, wherein：

Fig. 1 is the structural schematic diagram according to the battery core of the utility model embodiment；

Fig. 2 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Fig. 3 is the cross section structure schematic diagram according to the battery core of the utility model embodiment；

Fig. 4 is the structural schematic diagram according to the first gasket of the battery core of the utility model embodiment；

Fig. 5 is the cross section structure schematic diagram according to the battery core of the utility model embodiment；

Fig. 6 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Fig. 7 is perspective view of the support element on the plane of reference in Fig. 6；

Fig. 8 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Fig. 9 is perspective view of the support element on the plane of reference in Fig. 8；

Figure 10 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Figure 11 is perspective view of the support element on the plane of reference in Figure 10；

Figure 12 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Figure 13 is perspective view of the support element on the plane of reference in Figure 12；

Figure 14 is the structural schematic diagram according to the support element of the battery core of the utility model embodiment；

Figure 15 is perspective view of the support element on the plane of reference in Figure 14.

Reference numeral：

Battery core 1,

Electrode assembly 10, first through hole 101,

Support element 20, the second through-hole 21, the second through-hole center line 21a,

Third through-hole 211, the first side a1, the second side a2, third through-hole center line 211a,

Fourth hole 212, third side a3, the 4th side a4, fourth hole center line 212a,

Fifth hole 213, the 5th side a5, the 6th side a6, fifth hole center line 213a,

First broken line 213a1, the second broken line 213a2, the 7th side a7, the 8th side a8,

Shell 30, first end 31, the first closing in portion 311, the second end 32, the second closing in portion 321,

First gasket 40, the second gasket 50, through hole 400, lug hole 410 are electrolysed fluid apertures 420,

Lug 60, gel 80, packaging bag 90, axis a, plane of reference A.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width The orientation or positional relationship of the instructions such as degree ", " thickness ", "upper", "lower", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " is base In orientation or positional relationship shown in the drawings, be merely for convenience of describing the present invention and simplifying the description, rather than indicate or It implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as Limitations of the present invention.In addition, define " first ", the feature of " second " can explicitly or implicitly include one or More this feature of person.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with On.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

As shown in Fig. 1, Fig. 3 and Fig. 5, according to the battery core 1 of the utility model embodiment, including electrode assembly 10 and support element 20。

Specifically, there is electrode assembly 10 first through hole 101, support element 20 to be set to first through hole 101, wherein branch The second through-hole 21 is provided in support member 20.For example, electrode assembly 10 could be formed with first through hole 101, first through hole 101 is in electricity Through electrode component 10 on the axial direction of pole component 10, support element 20 can be located in first through hole 101.It can on support element 20 To be equipped with the second through-hole 21, the second through-hole 21 can penetrate through support element 20.Second through-hole 21, which can be connected in battery core 1, is located at support The area of space of 20 both sides of part, since electrolyte being distributed with around electrode assembly 10, the second through-hole 21 can be connected to different zones Electrolyte, so as to accelerate the infiltration of electrolyte.Electrolyte meeting between cyclic process, cathode sheet and anode pole piece Preferentially be gradually consumed, the electrolyte in 1 central space of battery core can quickly be added to by the second through-hole 21 cathode sheet and Between anode pole piece, the cycle performance of electrolyte thereby may be ensured that, improve the performance of battery core 1.

In the related technology, when preparing battery core, usually first with sutomatic winding machine by electric core winding at tubular, rolling up automatically During machine debatching needle, it is easy to empty copper foil, the aluminium foil of battery core inner ring be caused to be crumpled or damaged.Further, since battery core Centre be hollow, durings cycle, high temperature, storage etc., battery core since expanded by heating can cause the inner ring of battery core to collapse, Influence the working performance of battery core.

It should be noted that support element 20 can be located on sutomatic winding machine, electrode assembly 10 is directly wound on support On part 20, after the completion of winding, support element 20 is taken off from sutomatic winding machine together with electrode assembly 10.Can also be in electricity After the completion of pole component 10 is wound, by the plug of support element 20 at the space that the middle part of electrode assembly 10 is formed.

According to the battery core 1 of the utility model embodiment, by wearing support element 20 in electrode assembly 10, support element 20 can It is effectively reduced electrode assembly 10 so as to improve the structural stability of battery core 1 for support electrode assembly 10 and is producing Or in storing process, due to the case where electrode assembly 10 caused by outer force effect is damaged or damage, and then electricity can be improved The performance of pole component 10.The second through-hole 21 on support element 20 can be connected to the electrolyte of 1 inner support member of battery core, 20 both sides, to It can accelerate the infiltration of electrolyte.

As shown in Figure 1, some embodiments according to the present utility model, in the short transverse of support element 20, electrode assembly 10 height is more than the height of support element 20.It should be noted that electrode assembly 10 can be rolled up by anode pole piece and cathode sheet There is diaphragm, diaphragm to avoid sun for anode pole piece and cathode sheet to be isolated between formation, anode pole piece and cathode sheet Pole pole piece is in direct contact the situation for leading to short circuit with cathode sheet.The periphery of diaphragm can exceed edge and the cathode pole of anode pole piece The edge of piece, when the winding of electrode assembly 10 is formed tubular, the upper end-face edge of diaphragm can exceed the upper surface of electrode assembly 10, The lower edge of diaphragm can exceed the lower face of electrode assembly 10.

As a result, by the way that on the axis direction of electrode assembly 10, the length of setting electrode assembly 10 is more than support element 20 Length, can to avoid 20 both ends end of support element formed burr pierce through diaphragm, cause cathode sheet and anode pole piece short circuit Situation, so as to improve the security performance of battery core 1.

As shown in Fig. 2, in some embodiments of the utility model, the second through-hole 21 can be in the axis of electrode assembly 10 Support element 20 is penetrated through in the vertical direction in direction.Further, the second through-hole 21 can be formed as circular hole, tri-angle-holed or more Side shape hole.

As shown in Fig. 6-Fig. 9, some embodiments according to the present utility model, the second through-hole 21 can include third through-hole 211, third through-hole center line 211a point-blank, the folder of third through-hole center line 211a and 10 short transverse of electrode assembly Angle is the first angle α, and the first angle α is more than zero degree.It should be noted that defining 20 front view of support element (in such as Fig. 6 or Fig. 8 The view of support element 20) where plane be plane of reference A, opposite two of third through-hole 211 a1 and second while for first Be projected as the line segment a1 ', the second side a2 of side a2, the first side a1 on plane of reference A are projected as line segment a2 ' on plane of reference A, this In the third through-hole center line 211a that is previously mentioned can refer to：There are a line segment, the line segments to line segment a1 ' on plane of reference A Distance it is equal at a distance from the line segment to line segment a2 ', which is third through-hole center line 211a.Also need to explanation It is that 10 short transverse of electrode assembly refers to：The extending direction of the axis a of electrode assembly 10.

Thus, it is possible to the area of space for being located at 20 both sides of support element in battery core 1 is connected to, since 10 surrounding of electrode assembly is distributed There are electrolyte, third through-hole 21 that can be connected to the electrolyte of different zones, so as to accelerate the infiltration of electrolyte.It is being circulated throughout Journey, the electrolyte between cathode sheet and anode pole piece can be preferentially gradually consumed, and the electrolyte in 1 central space of battery core can be with It is quickly added between cathode sheet and anode pole piece by third through-hole 21, thereby may be ensured that the cycle performance of electrolyte, Improve the performance of battery core 1.

Further, as shown in Figure 10-Figure 11, the second through-hole 21 includes fourth hole 212, fourth hole center line 212a Point-blank, fourth hole center line 212a and the angle of 10 short transverse of electrode assembly are the second angle β, the second angle β is more than zero degree.

It should be noted that the plane where defining 20 front view of support element (such as the view of support element 20 in Figure 10) is ginseng Examine face A, opposite two articles a3 and the 4th side a4, the projections of third side a3 on the plane of reference A while for third of fourth hole 212 It is projected as line segment a4 ' on plane of reference A for line segment a3 ', the 4th side a4, fourth hole center line 212a mentioned herein can To refer to：There are a line segment on plane of reference A, the distance of the line segment to the line segment a3 ' phase at a distance from the line segment to line segment a4 ' Deng the line segment is fourth hole center line 212a.It should also be noted that, 10 short transverse of electrode assembly refers to：Electrode group The extending direction of the axis a of part 10.

For example, fourth hole 212 can be formed as rectangular through-hole, fourth hole 212 can be along the week of electrode assembly 10 Extend to direction.Fourth hole 212 can assist third through-hole 211 as a result, so as to improve the circulation of electrolyte, add The infiltration of fast electrolyte, and then can ensure the cycle performance of electrolyte.

As shown in Figure 10-Figure 11, in some embodiments of the utility model, the first angle α number of degrees are more than the second angle β The number of degrees.It is understood that the extending direction of third through-hole 211 is different from the extending direction of fourth hole 212, i.e. third through-hole Angle is formed between center line 211a and fourth hole center line 212a.Third through-hole can guide electricity with fourth hole as a result, Liquid stream is solved to different directions, so as to improve the zone of action of electrolyte.

In some embodiments of the utility model, the first angle α number of degrees are equal with the second angle β number of degrees.It is appreciated that , the extending direction of third through-hole 211 is identical as the extending direction of fourth hole 212, i.e. third through-hole center line 211a with Fourth hole center line 212a is parallel.Thus, it is possible to so that the flow direction of electrolyte forms certain rule and inertia, so as to Improve the flow velocity of electrolyte.As shown in Figure 12-Figure 13, some embodiments according to the present utility model, the second through-hole 21 can wrap Containing fifth hole 213, fifth hole center line 213a is broken line, and broken line includes the first broken line 213a1, the first broken line 213a1 and the angle of 10 short transverse of electrode assembly are more than zero degree.

It should be noted that the plane where defining 20 front view of support element (such as the view of support element 20 in Figure 12) is ginseng Examine face A, opposite two articles a5 and the 6th side a6, the projections of the 5th side a5 on the plane of reference A while for the 5th of fifth hole 213 It is projected as line segment a6 ' on plane of reference A for line segment a5 ', the 6th side a6, fifth hole center line 213a mentioned herein can To refer to：There are a line segment on plane of reference A, the distance of the line segment to the line segment a5 ' phase at a distance from the line segment to line segment a6 ' Deng the line segment is fifth hole center line 213a.It should also be noted that, 10 short transverse of electrode assembly refers to：Electrode group The extending direction of the axis a of part 10.Thus, it is possible to expand the size of fifth hole 213, to improve the stream of fifth hole 213 Flux.

Further, as shown in Figure 12-Figure 13, fifth hole center line 213a is broken line, and broken line includes the second broken line 213a2, the second broken line 213a2 are parallel with 1 short transverse of battery core.Thus, it is possible to expand the size of fifth hole 213, to Improve the circulation of fifth hole 213.

As shown in Figure 14-Figure 15, some embodiments according to the present utility model, the second through-hole center line 21a includes arc Section.It should be noted that the frontal plane of projection for defining 20 front view of support element (view of support element 20 in such as Figure 14) is the plane of reference A, the second through-hole center line 21a mentioned herein can refer to two long back gauges to the second through-hole 21 in the second through-hole 21 Projection Line Segment of the equal line segment on the plane of reference, Projection Line Segment include arc segment.

It should be noted that the plane where defining 20 front view of support element (such as the view of support element 20 in Figure 14) is ginseng Examine face A, opposite two articles a7 and the 8th side a8, the projections of the 7th side a7 on the plane of reference A while for the 7th of the second through-hole 21 It is projected as line segment a8 ' on plane of reference A for line segment a7 ', the 8th side a8, the second through-hole center line 21a mentioned herein can To refer to：There are a line segment on plane of reference A, the distance of the line segment to the line segment a7 ' phase at a distance from the line segment to line segment a8 ' Deng the line segment is the second through-hole center line 21a.It should also be noted that, 10 short transverse of electrode assembly refers to：Electrode assembly The extending direction of 10 axis a.Thus, it is possible to improve the flowing smoothly property of electrolyte.

As shown in Fig. 1-Fig. 3 and Fig. 5, some embodiments according to the present utility model, support element 20 can be cylindrical in shape or put down Plate.It is understood that support element 20 can be formed as tubular, the periphery wall of support element 20 can in electrode assembly 10 Peripheral wall is in close contact, so as to preferably support electrode assembly 10.Support element 20 can also be formed as tabular, support element 20 It can be threaded through the middle part of electrode assembly 10, the portion end surface of support element 20 can be contacted with the internal perisporium of electrode assembly 10.Into One step, support element 20 can be formed as cylindric or oval tubular.

Some embodiments according to the present utility model, support element 20 can be stainless steel part or ceramic member.It is appreciated that It is that support element 20 may be used stainless steel and be made, support element 20 may be used ceramic material and be made.Support element 20 as a result, Both it can meet the effect of support electrode assembly 10, improve the structural stability of battery core 1, support element 20 can also be avoided to be electrolysed Corrosion, the case where causing electrolyte contamination.

As shown in Figure 1, some embodiments according to the present utility model, battery core 1 further includes shell 30, the first gasket 40 and Two gaskets 50.Shell 30 includes first end 31 and the second end 32, and electrode assembly 10 and support element 20 are set in shell 30, the One gasket 40 is set to first end 31, and the second gasket 50 is set to the second end 32.For example, shell 30 can be formed as tubular, electricity Pole component 10 interior can be placed on shell 30, and one end of shell 30 can be equipped with the first gasket 40, and the other end of shell 30 can be set There are the second gasket 50, electrode assembly 10 can be between the first gasket 40 and the second gasket 50.Shell 30, first pads as a result, Electrode assembly 10 can be surrounded by piece 40 and the second gasket 50, so as to guard electrode component 10, improve the knot of battery core 1 Structure intensity can also provide space for storage electrolyte.

As shown in Figure 1, in some embodiments of the utility model, there is the first closing in portion 311 at first end 31, the One gasket 40 is located at the side inside the close shell 30 in the first closing in portion 311, has the second closing in portion at the second end 32 321, the second gasket 50 is located at the side inside the close shell 30 in the second closing in portion 321.It is understood that the first closing in portion The aperture that shell 30 at 311 is limited is less than on first end 31 and 311 adjacent position shell of the first closing in portion, 30 institute The aperture limited；The aperture that shell 30 at second closing in portion 321 is limited is less than on the second end 32 and closes up with second The aperture that 321 adjacent position shell 30 of portion is limited, the first gasket 40 and the second gasket 50 are respectively positioned in shell 30.

For example, shell 30 can be formed as cylindric, the section circle at the port at the both ends of shell 30 is respectively less than shell 30 The section of interlude is justified, at the port at the both ends that the first gasket 40 and the second gasket 50 are located at shell 30.It first receives as a result, First gasket 40 and the second gasket 50 can be surrounded by oral area 311 and the second closing in portion 321, in order to 40 He of the first gasket The installation and fixation of second gasket 50 can also seal the gap between the first gasket 40, the second gasket 50 and shell 30, to Electrolyte can be stored.

As shown in figure 4, in some embodiments of the utility model, at least one of the first gasket 40 and the second gasket 50 It is equipped with through hole 400.It is understood that can be equipped with through hole 400 on the first gasket 40, through hole 400 can be the The first gasket 40 is penetrated through on the thickness direction of one gasket 40, and through hole 400, through hole 400 can also be equipped on the second gasket 50 It can penetrate through on the second gasket 50 or the first gasket 40 and the second gasket 50 and be equipped on the thickness direction of the second gasket 50 Through hole 400.The lug 60 formed on electrode assembly 10 as a result, can be extend out to from through hole 400 outside battery core 1, can also be incited somebody to action Electrolyte is around 400 injecting electrode component 10 of through hole.

Further, through hole 400 can be multiple.It is understood that multiple pass through can be equipped on the first gasket 40 Perforation 400 can be equipped with multiple through holes 400 on second gasket 50 or the first gasket 40 is equipped at least one through hole 400, the second gasket 50 is equipped at least one through hole 400.Thus, it is possible to which part through hole 400 is configured to lug hole 410, in order to which lug 60 stretches out battery core 1, part through hole 400 can also be configured to electrolysis fluid apertures 420, electrolyte is noted Enter in battery core 1.Further, through hole 400 can be configured to round hole, polygonal hole or slotted eye etc..As a result, may be used It, can be by identifying the shape of different through holes 400 to determine its function to increase the identification feature of through hole 400.

In some embodiments of the utility model, at least one of the first gasket 40 and the second gasket 50 are insulating part. It is understood that the first gasket 40 can be insulating part, such as plastic part or rubber parts, the second gasket 50 can also be exhausted Edge part or the first gasket 40 and the second gasket 50 are insulating part.Thus, it is possible to which insulating electrode component 10 and the external world, avoid Electrode assembly 10 leaks electricity or the situation of short circuit, can also be held by insulating part by battery core 1.

According to the electrochemical appliance of the utility model embodiment, including battery core, battery core is according to described in any one of as above Battery core 1.It should be noted that electrochemical appliance described in the utility model includes all dresses that electrochemical reaction wherein occurs It sets.Specifically, electrochemical appliance includes the primary battery of all kinds, secondary cell, fuel cell, solar cell and capacitance Device, such as ultracapacitor.Particularly preferred lithium secondary battery, including lithium metal secondary cell, lithium rechargeable battery, lithium polymerization Object secondary cell and lithium ion polymer secondary cell.

It is supported according to the electrochemical appliance of the utility model embodiment by wearing support element 20 in electrode assembly 10 Part 20 can be used for that electrode assembly 10 is supported to be effectively reduced electrode so as to improve the structural stability of electrode assembly 10 Component 10 is in production or storing process, the case where due to 10 breakage of electrode assembly caused by outer force effect or damage, into And the performance of electrode assembly 10 can be improved.

Battery core 1 according to the present utility model is described in detail below with reference to Fig. 1-Fig. 5.Be worth understand, it is described below only It is exemplary illustration, rather than to the concrete restriction of the utility model.

As shown in Fig. 1, Fig. 3 and Fig. 5, the battery core 1 of the utility model embodiment includes electrode assembly 10, support element 20, the One gasket 40, the second gasket 50, shell 30 and packaging bag 90.

Specifically, as Figure 1-Figure 5, electrode assembly 10, shell 30 and support element 20 are cylindrical in shape.Electrode assembly 10 In shell 30, the plug of support element 20 is in the space that 10 middle part of tubular electrode component is formed.First gasket 40 and the second gasket 50 pad respectively at 10 both ends of electrode assembly, and the first gasket 40 is located in shell 30 and outside support element 20, the second 50, gasket In shell 30 and outside support element 20.The both ends of shell 30 are handled equipped with necking, on the first gasket 40 and the second gasket 50 It is equipped with lug hole 410, the lug 60 of electrode assembly 10 can be drawn by lug hole 410 from both ends, and electrode assembly 10 is packed into After shell 30, then it is packaged by packaging bag 90.

Shell 30 and support element 20 may be used the hard materials such as steel, aluminium, copper or other alloys and be made.Shell 30 is protecting Electrode assembly 10 is protected, prevents electrode assembly 10 from being deformed by external compression or collision, while can also prevent electrode assembly 10 from existing Pole piece expansion in cycle, storing process squeezes the external equipment of battery core 1.

As shown in Figure 1, the diameter of the first gasket 40 is less than the internal diameter of shell 30 and the reentrant diameter more than shell 30, so as to First gasket 40 can smoothly be put into shell 30 while be blocked at necking, and the first gasket 40 has lug hole 410 in addition to centre, the One gasket 40 is additionally provided with four electrolysis fluid apertures 420, and the ambient separation that four electrolysis fluid apertures 420 are located at lug hole 410 is arranged, can be with For promoting after fluid injection electrolyte through the first gasket 40, into electrode assembly 10.The diameter of second gasket 50 is less than shell 30 internal diameter and the reentrant diameter for being more than shell 30, so that the second gasket 50 can smoothly be put into shell 30 simultaneously by card at necking Firmly, the second gasket 50 has a lug hole 410 in addition to centre, and the second gasket 50 is additionally provided with four electrolysis fluid apertures 420, four electrolysis fluid apertures 420 ambient separations for being located at lug hole 410 are arranged, can be used for promoting after fluid injection electrolyte through the second gasket 50, into electricity In pole component 10.

As shown in Fig. 2, around support element 20 be equipped with the second through-hole 21, the second through-hole 21 can to electrolyte by, plus Fast infiltration.Electrolyte in cyclic process anode and cathode material hole can be preferentially gradually consumed simultaneously, and the on support element 20 Two through-holes 21 can promote the electrolyte at central hollow quickly to add between anode and cathode pole piece, be conducive to ensure cycle performance. Second through-hole 21 can have multiple, and multiple second through-holes 21 are circular through hole.Support element 20 stoppers the sky in electrode assembly 10 It at the heart, prevents inner ring in cycle, storing process from collapsing, plays the role of supporting inner ring structure, improves inner ring interface, so as to improve The chemical property of battery core 1.

When specifically making the battery core 1 of the present embodiment, first, tubular electrode component 10 is made using auto reeling technique, And support element 20 is tucked among cylindrical electrode component 10.Then, electrode assembly 10 is placed in shell 30, and passes through necking Electrode assembly 10 is lockked in processing.Finally, encapsulation, fluid injection, capacity production battery core 1 are passed sequentially through.

Packaging bag 90 can be plastic-aluminum packaging film, and electrode assembly 10 is mutually wound by anode pole piece, cathode sheet and diaphragm It forms, anode lug 60 is welded on anode pole piece, cathode tab 60 is welded on cathode sheet.In addition, in order to improve encapsulation Leakproofness, anode lug 60, cathode tab 60 and plastic-aluminum packaging film intersection are equipped with gel 80.Shell 30 and support element 20 It is made by stainless steel, the first gasket 40 and the second gasket 50 are made by PET insulating materials.

It should be noted that the cross section of tubular electrode component 10 can be cylinder, track type, ellipse or class circle Shape, correspondingly, shell 30, support element 20, the first gasket 40 and the second gasket 50 shape need 10 shape of matched electrodes component, Shell 30, support element 20, the first gasket 40 and the second gasket 50 cross section may be cylinder, track type, ellipse or Similar round.

The length that shell 30 can be arranged is 52mm, outer diameter 10.6mm, internal diameter 10.2mm, wall thickness 0.2mm, necking Internal diameter is 8.2mm.The length of support element 20 is 46mm, outer diameter 2.8mm, wall thickness 0.2mm.First gasket 40 and the second gasket 50 diameter is 9.6mm.The length that shell 30 can also be arranged is 42mm, outer diameter 6.6mm, internal diameter 6.4mm, and wall thickness is 0.1mm, necking internal diameter are 5.2mm.The length of support element 20 is 36mm, outer diameter 2.5mm, wall thickness 0.1mm；First gasket 40 Diameter with the second gasket 50 is 6.0mm.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that： Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (16)

1. a kind of battery core, including：Electrode assembly and support element,

There is the battery core component first through hole, the support element to be set to the first through hole, wherein be set on the support element It is equipped with the second through-hole.

2. battery core according to claim 1, wherein in the short transverse of the support element, the height of the electrode assembly Height of the degree more than the support element.

3. battery core according to claim 1, wherein second through-hole includes third through-hole, the third through-hole center Point-blank, the third through-hole center line and the angle of the electrode assembly short transverse are the first angle to line, described First angle is more than zero degree.

4. battery core according to claim 3, wherein second through-hole includes fourth hole, the fourth hole center Point-blank, the fourth hole center line and the angle of the electrode assembly short transverse are the second angle to line, described Second angle is more than zero degree.

5. battery core according to claim 4, wherein the first angle number of degrees are more than the second angle number of degrees.

6. battery core according to claim 4, wherein the first angle number of degrees are equal with the second angle number of degrees.

7. battery core according to claim 1, wherein second through-hole includes fifth hole, in the fifth hole Heart line is broken line, and the broken line includes the first broken line, the angle of first broken line and the electrode assembly short transverse More than zero degree.

8. battery core according to claim 7, wherein the fifth hole center line is broken line, and the broken line includes second Broken line, second broken line are parallel with the battery core short transverse.

9. battery core according to claim 1, wherein the center line of second through-hole includes segmental arc.

10. battery core according to claim 1, wherein the support element is cylindrical in shape or tabular.

11. battery core according to claim 1, wherein the support element is stainless steel part or ceramic member.

12. battery core according to claim 1, wherein further include：

Shell, the shell include first end and the second end, and the electrode assembly and the support element are set to the shell In vivo；

First gasket, first gasket are set to the first end；

Second gasket, second gasket are set to the second end.

13. battery core according to claim 12, wherein the first end is provided with the first closing in portion, first pad Piece is located at the side of the close enclosure interior in first closing in portion,

The second end is provided with the second closing in portion, and second gasket is located at the close shell in second closing in portion Internal side.

14. battery core according to claim 12, wherein at least one of first gasket and second gasket are set It is equipped with through hole.

15. battery core according to claim 12, wherein at least one of first gasket and second gasket are Insulating part.

16. a kind of electrochemical appliance, which is characterized in that including：

Battery core, the battery core are the battery core according to any one of claim 1-15.