CN207624796U - Lithium battery short-circuit protection structure and lithium battery with the protection structure - Google Patents
Lithium battery short-circuit protection structure and lithium battery with the protection structure Download PDFInfo
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- CN207624796U CN207624796U CN201721756223.6U CN201721756223U CN207624796U CN 207624796 U CN207624796 U CN 207624796U CN 201721756223 U CN201721756223 U CN 201721756223U CN 207624796 U CN207624796 U CN 207624796U
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- lithium battery
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- heat insulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a kind of lithium battery short-circuit protection structure.The lithium battery short-circuit protection structure includes the first connection sheet, protection element, the second connection sheet and embedding element, the electrode connection of first connection sheet and lithium battery；The protection element is connect with respect to the side of lithium battery with first connection sheet, and side of the protection element far from lithium battery is connect with second connection sheet；The part of first connection sheet, the protection element and second connection sheet is arranged at the inside of the embedding element, which forms the sealing space of contact with the electrode surface of the lithium battery；And the remainder of second connection sheet is exposed to outside sealing space, using the lead of the electrode as the lithium battery.The utility model further includes a kind of lithium battery with the protection structure.It is remarkably improved the safety during lithium battery use by the utility model.
Description
Technical field
The utility model is related to a kind of lithium battery more particularly to a kind of lithium battery short-circuit protection structure and there is the protection knot
The lithium battery of structure.
Background technology
Elemental lithium is most light, metallic element that standard chemical current potential is minimum in the periodic table of elements.Using lithium metal as cathode
Lithium battery have the characteristics that high-energy-density, high power, low self-discharge rate, and begun in civilian army early in the nineties in last century
With etc. every field be widely used.Lithium is as a kind of active metal, and in air or vigorous reaction can occur for chance water,
It even catches fire, and releases amount of heat.Therefore, short circuit once occurs for lithium battery, it will causes battery acutely to generate heat, serious meeting
Cause cell expansion to burst, and causes further security risk.For the more demanding medical electronics industry of security reliability,
Or lithium battery puts forward higher requirements device inherently safe reliability design or then because of security risk existing for its own
Limit its application.But with the fast development of medical electronics industry, particularly with implantable medical electronic instrument, such as capsule
Endoscope, now widely used silver oxide cell can no longer meet demand of the instrument to heavy-duty battery.Therefore, by lithium electricity
Pond safe especially ensures that the safety of lithium battery under short-circuit condition is of great significance and the urgent of existing market is essential
It asks.
However, existing small-sized high-power lithium battery, such as widely used button shape or cylindrical small ruler on the market
Very little lithium battery has no any battery short circuit design protection due to the compactedness of structure design itself and limited space etc..
The high power lithium battery of this no short-circuit protection design, especially customizes the lithium battery of processing, once short circuit battery itself occurs
Temperature can rise to 120 degree it is even higher.Excessively high Wen Sheng can also cause other than the performance for directly affecting instrument
The secondary security risks such as battery explosion.On the other hand, more mature lithium battery short-circuit protection scheme is equal on the market at present
It can not be applied in the lithium battery of small size, and process aspect does not also have compatibility.
Therefore, it is necessary to design a kind of lithium battery short-circuit protection structure and the lithium battery with the protection structure.
Utility model content
In view of the problems of the existing technology, its purpose is to provide a kind of lithium battery short-circuit protection structures for the utility model
And the lithium battery with the protection structure, a kind of process compatible and the simple li-ion cell protection method of method are proposed, is promoted
The application range of lithium battery, significantly improves the safety during lithium battery use.
To achieve the above object, the utility model provides a kind of lithium battery short-circuit protection structure, which protects
Protection structure includes the first connection sheet, protection element, the second connection sheet and embedding element, one of first connection sheet and lithium battery
Electrode connects；The protection element is connect with respect to the side of lithium battery with first connection sheet, and the protection element is far from lithium battery
Side is connect with second connection sheet；The part of first connection sheet, the protection element and second connection sheet is arranged at
The inside of the embedding element, the embedding element form the sealing space of contact with the electrode surface of the lithium battery；And
The remainder of second connection sheet is exposed to outside sealing space, using the lead of the electrode as the lithium battery.
The electrode of first connection sheet and the lithium battery, described as a further improvement of the utility model,
Protection element passes through riveting, welding or combination with first connection sheet, the protection element and second connection sheet
Riveted and welded technique is attached.
The protection element is that polymer positive-temperature-coefficient device or electric current are protected as a further improvement of the utility model,
Dangerous silk.
The embedding element is casting glue as a further improvement of the utility model, and the embedding element is by described the
A connecting piece, the protection element and the second connection sheet embedding are and described in the electrode surface of the lithium battery
First connection sheet, the protection element and second connection sheet are respectively formed contact seal.
The lithium battery short-circuit protection structure further includes upper covering heat insulating element as a further improvement of the utility model,
And lower covering heat insulating element, the lower covering heat insulating element is set between the lithium battery and the protection element, and is opened up
There is through-hole to pass through for first connection sheet；The upper covering heat insulating element and side of the protection element far from lithium battery
It is adjacent, and through-hole is offered so that second connection sheet passes through；And the upper covering heat insulating element and lower covering heat insulating element
It is arranged in the inside of the embedding element, the electrode surface of the embedding element and the lithium battery forms the close of contact
Seal space.
The surface face of the upper covering heat insulating element and lower covering heat insulating element as a further improvement of the utility model,
Product be all higher than or equal to the protection element surface area, the covering of the protection element is isolated with realizing.
The thickness model of the upper covering heat insulating element and lower covering heat insulating element as a further improvement of the utility model,
Enclose is between 0.1mm ~ 0.5mm.
First connection sheet and the electrode surface of the lithium battery as a further improvement of the utility model,
Center connects, and the protection element is connect with respect to the center of the side of lithium battery with first connection sheet, the protection element
The center of side far from lithium battery is connect with second connection sheet；And the upper covering heat insulating element, protection element and under
Surface size and the shape for covering heat insulating element are identical as the size and shape of the electrode surface of the lithium battery.
The embedding element is short according to the lithium battery and the lithium battery as a further improvement of the utility model,
Protect the shape of structure and the integrally formed heat-sealing set of size in road.
To achieve the above object, a kind of lithium battery, including the lithium battery short-circuit protection structure described in any one as above.
Using lithium battery short-circuit protection structure described in the utility model and the lithium battery with the protection structure, in lithium electricity
When short circuit occurs for pond, self-resistance can be cut off rapidly or be increased to protection element in the case that electric current is increased, to reduce short circuit
Electric current afterwards significantly improves lithium battery to inhibit the rising of lithium battery temperature and avoid the further deterioration of short-circuit consequence
Safety during use；The utility model is simple in structure, and encapsulation process is easy to operate, and the lithium battery size after encapsulating becomes
Change less, there is very high feasibility, and is easy to carry out large-scale production.
Description of the drawings
Fig. 1 is the first structure schematic diagram for the lithium battery that the utility model embodiment has short-circuit protection function；
Fig. 2 is the second structural schematic diagram of the lithium battery that the utility model embodiment has short-circuit protection function；
Fig. 3 is the third structural schematic diagram for the lithium battery that the utility model embodiment has short-circuit protection function；
Fig. 4 is the direct short-circuit current curve schematic diagram of the utility model embodiment lithium ion battery；
Fig. 5 is the direct short-circuit skin temperature profile schematic diagram of the utility model embodiment lithium ion battery；
Fig. 6 is the lithium ion battery short circuit current curve synoptic diagram that the utility model embodiment has protection structure；
Fig. 7 is the lithium ion battery short circuit skin temperature profile schematic diagram that the utility model embodiment has protection structure；
Fig. 8 is the lithium battery short circuit temperature and current diagram that the utility model embodiment does not have protection structure；
Fig. 9 is the lithium battery short circuit temperature and current diagram that the utility model embodiment has protection structure.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall in the protection scope of this application.
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 the instructions such as term " transverse direction ", "upper", "lower", " preceding "
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore should not be understood as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the company inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of above-mentioned term as the case may be.
It show the first structure schematic diagram of the lithium battery with short-circuit protection function of the utility model refering to fig. 1.It should
Lithium battery with short-circuit protection function is used to provide overcurrent protection and/or overheating protection when short circuit occurs for lithium battery, to carry
Safety during high lithium battery use.The lithium battery with short-circuit protection function includes lithium battery 1 and protection structure 2.
Protection 2 embedding of structure is in an electrode surface of lithium battery 1, to form the lithium battery with short-circuit protection function.
The electrode of the lithium battery 1 can be positive or negative pole, and in the present embodiment, the electrode of the lithium battery 1 is preferably anode.
It is negative material, using the battery of non-aqueous electrolytic solution that the lithium battery 1, which is by lithium metal or lithium alloy,.It is described
Lithium battery 1 can be the lithium battery etc. of lithium ion battery or small size, the length range that the small size refer to lithium battery 1 be 5mm ~
30mm, width range are 5mm ~ 30mm, altitude range is 5mm ~ 30mm.In the present embodiment, the lithium battery 1 is preferably small ruler
Very little lithium battery.The shape of the lithium battery 1 can be the shapes such as the common button shape in market, cylinder, or the cube of customization.
The lithium battery 1 can be soft package lithium battery or Hard Roll lithium battery.
The protection structure 2 includes the first connection sheet 20, protection element 21, the second connection sheet 22 and embedding element 23.
First connection sheet 20 is connect with an electrode of lithium battery 1.The electrode can be the anode or negative of lithium battery 1
Pole, in the present embodiment, the electrode are preferably anode.First connection sheet 20 and the electrode of the lithium battery 1 are logical
It crosses riveting, welding or is attached in conjunction with riveted and welded technique.First connection sheet 20, can be with for being conductively connected
For electric installations such as nickel sheet, copper sheets, in the present embodiment, first connection sheet 20 is preferably nickel sheet.
The protection element 21 is connect with respect to the side of lithium battery 1 with first connection sheet 20, and the protection element 21 is remote
Side from lithium battery 1 is connect with second connection sheet 22.The protection element 21 and first connection sheet 20, the guarantor
Protection element 21 is attached with second connection sheet 22 by riveting, welding or in conjunction with riveted and welded technique.
The protection element 21 is used to cut off when short circuit occurs for lithium battery 1 or increase self-resistance is to reduce electric current, from
And inhibit the temperature rise of lithium battery 1.The protection element 21 can be that polymer positive-temperature-coefficient device or traditional overcurrent are protected
Protect device etc..Traditional over-current protection device can be current insurance silk etc..In the present embodiment, in order to ensure lithium battery 1
Installing additional, the change in size after protecting structure 2 is little, 21 preferred polymers positive temperature coefficient device of the protection element.The polymerization
Object positive temperature coefficient device has the advantage of Parameter adjustable, can change metal in device according to the requirement of actual use scene and receive
Rice corpuscles and polymer material volume fraction etc. adjust Protection parameters, to provide overcurrent and overheating protection.
The protection element 21 can be with the shapes such as certain thickness circle, square, the surface of the protection element 21
Area can be more than, less than or equal to lithium battery 1 the electrode surface area.When the electrode is anode, the electrode table
Face is positive electrode surface；When the electrode is cathode, which is negative terminal surface.The thickness range of the protection element 21
Between 0.1mm ~ 2mm.In the present embodiment, in order to ensure that change in size of the lithium battery 1 after installing protection structure 2 additional is little,
The surface area of the protection element 21 is preferably lower than or equal to the area of the electrode surface of lithium battery 1.Described in setting
When the position of protection element 21, it need to ensure that the protection element 21 is described with respect to surface and the lithium battery 1 of the side of lithium battery
Electrode surface has subregion overlapping, it is preferable that the center at the center of the protection element 21 and the electrode surface of lithium battery 1
Overlapping.
The part of first connection sheet 20, the protection element 21 and second connection sheet 22 is arranged at described
The sealing that the electrode surface of the inside of embedding element 23, the embedding element 23 and the lithium battery 1 forms contact is empty
Between.The remainder of second connection sheet 22 is exposed to outside sealing space, using drawing for the electrode as the lithium battery 1
Line.
In the present embodiment, the embedding element 23 is by first connection sheet 20, the protection element 21 and described
Second connection sheet, 22 embedding in the electrode surface of lithium battery 1, with first connection sheet 20, the protection element 21 and
Second connection sheet 22 is respectively formed contact seal.The embedding element 23 can be casting glue.
The second structural schematic diagram of the lithium battery with short-circuit protection function of the utility model is shown refering to Fig. 2.
The protection structure 2 further includes upper covering heat insulating element 24 and lower covering heat insulating element 25.
The lower covering heat insulating element 25 is set between lithium battery 1 and protection element 21, and offers through-hole for
A connecting piece 20 passes through.The upper covering heat insulating element 24 is adjacent with side of the protection element 21 far from lithium battery, and offers
Through-hole passes through for the second connection sheet 22.The protection element 21 is clipped in covering heat insulating element 24 and lower covering heat insulating element 25
Between.
The upper covering heat insulating element 24 is used for insulation blocking element 21, it is protected with the heat of insulation blocking element 21
His component.The lower covering heat insulating element 25 is for being isolated lithium battery 1 and protection element 21, with the heat of insulation blocking element 21
It measures to protect lithium battery 1.The upper covering heat insulating element 24 and lower covering heat insulating element 25 all can be thermal insulation ceramics, titanium dioxides
The heat insulating mattress such as silicon Nano-composite thermal insulation material.The upper covering heat insulating element 24 and lower covering heat insulating element 25 can be with one
Determine the shapes such as circle, the square of thickness, it is described in order to ensure that change in size of the lithium battery 1 after installing protection structure 2 additional is little
The thickness range of upper covering heat insulating element 24 and lower covering heat insulating element 25 is between 0.1mm ~ 0.5mm.It is described it is upper covering every
Thermal element 24 and it is lower covering heat insulating element 25 surface area be all higher than or equal to protection element 21 surface area, with realize pair
The covering of protection element 21 is isolated.In the present embodiment, the table of the upper covering heat insulating element 24 and lower covering heat insulating element 25
Face shape is preferably consistent with the shape and size of electrode surface described in lithium battery 1 with size, such as electrode surface described in lithium battery 1
For the circle of diameter 1cm, then the upper covering heat insulating element 24 and the lower surface for covering heat insulating element 25 are both preferably diameter 1cm
Circle.
The lead to the hole site of the upper covering heat insulating element 24 passes through location determination according to the second connection sheet 22.The overlying
The shapes such as the through-hole of lid heat insulating element 24 can be square, rectangle, circle, size be allow the second connection sheet 22 by
Size.For example, the through-hole of the upper covering heat insulating element 24 is the circular hole of 1mm ~ 2mm diameters.The lower covering heat insulating element 25
Lead to the hole site location determination is passed through according to the first connection sheet 20.The through-hole of the lower covering heat insulating element 25 can be pros
The shapes such as shape, rectangle, circle, size be allow the first connection sheet 20 by size.For example, the lower heat-insulated member of covering
The through-hole of part 24 is the square hole of 1mm ~ 2mm length of sides.
The upper covering heat insulating element 24 and lower covering heat insulating element 25 are also disposed at the inside of the embedding element 23, institute
State the sealing space that embedding element 23 forms contact with the electrode surface of the lithium battery 1.In the present embodiment, described
Embedding element 23 is by first connection sheet 20, the protection element 21, second connection sheet 22, the heat-insulated member of the upper covering
Part 24 and lower covering 25 embedding of heat insulating element are in the electrode surface of lithium battery 1, the embedding element 23 and the upper covering
Heat insulating element 24 and lower covering heat insulating element 25 also form contact seal.
Other components of the protection structure 2 see the described above of Fig. 1, and details are not described herein.
The third structural schematic diagram of the lithium battery with short-circuit protection function of the utility model is shown refering to Fig. 3.
First connection sheet 20 is connect with the center of the electrode surface of lithium battery 1, and the protection element 21 is opposite
The center of the side of lithium battery 1 is connect with the first connection sheet 20, the center of side of the protection element 21 far from lithium battery 1 with
Second connection sheet 22 connects.The surface of the upper covering heat insulating element 24, protection element 21 and lower covering heat insulating element 25
Size and shape is identical as the size and shape of the electrode surface of lithium battery 1.
The embedding element 23 can be for will protect structure 2 be potted in lithium battery 1 the electrode surface filling
Sealing.The embedding element 23 may be according to lithium battery 1 and the shape and size of the protection structure 2 in addition to embedding element 23
Integrally formed heat-sealing set 26, heat-sealing set 26 by lithium battery 1 and the protection structure 2 in addition to embedding element 23 for being encapsulated as one
It is whole.
When the embedding element 23 is heat-sealing set 26, first connection sheet 20, the protection element 21, described second
Connection sheet 22, the upper covering heat insulating element 24 and lower covering heat insulating element 25 are arranged at the inside of the heat-sealing set 26, institute
State the sealing space that heat-sealing set 26 forms contact with the electrode of the lithium battery 1.
Below with reference to Fig. 4 ~ Fig. 7 to the lithium ion battery without protection structure 2 and the lithium ion with protection structure 2
Battery battery temperature when short circuit occurs and electric current are analyzed.
Experimental program is：The protection part for the lithium ion battery that one capacity is 1810mAh is peeled off, lithium ion battery is found
Internal positive and negative electrode, voltage is about 4V between measuring, and protection knot as shown in Figure 1 is not added with respectively in this positive and negative electrode lead-out wire
The short circuit experiment of protection structure 2 as shown in Figure 1 is tested and is added in the direct short-circuit of structure 2, and four temperature are arranged in battery surface and survey
Pilot.The protection element 21 of the protection structure 2 is polymer positive-temperature-coefficient device.
It is not added with the direct short-circuit experiment of protection structure 2 as shown in Figure 1：Multimeter is transferred to current gear, with lithium ion battery
Connection, every the current value of 30 seconds record primary current tables after lithium ion battery short circuit, test total time is 75 minutes, test
In the process lithium ion battery without expand, split, overheat phenomena such as, beginning voltage be 3.985V, end voltage 3.446V, room temperature
23 DEG C, test result is as shown in Figures 4 and 5.
Add the short circuit experiment of protection structure 2 as shown in Figure 1：Multimeter is transferred to current gear, on lithium ion battery embedding have
Protection structure 2 as shown in Figure 1, every the current value of 10 minutes record primary current tables, test after lithium ion battery short circuit
Total time be 23 hours, in test process lithium ion battery without expand, split, overheat phenomena such as, beginnings voltage be 4.078V, tie
Beam voltage is 3.755V, and test result is as shown in FIG. 6 and 7.
Fig. 4 is direct short-circuit current curve schematic diagram when being not added with protection structure 2 as shown in Figure 1, maximum short circuit current
About 1280mA.Fig. 6 is short circuit current curve synoptic diagram when adding protection structure 2 as shown in Figure 1, and maximum short circuit current is about
46mA.For the result of comparison diagram 4 and Fig. 6 it is found that lithium ion battery is when embedding is just like protection structure 2 shown in FIG. 1, maximum is short-circuit
Electric current is remarkably decreased, and the lithium ion battery with short-circuit protection function in the present embodiment is with significant overcurrent protection effect.
Fig. 5 is direct short-circuit skin temperature profile schematic diagram when being not added with protection structure 2 as shown in Figure 1, maximum short circuit
Surface temperature is about 38.4 degree.Fig. 7 is short-circuit skin temperature profile schematic diagram when adding protection structure 2 as shown in Figure 1, maximum
Short-circuit surface temperature is about 23 degree.The result of comparison diagram 5 and Fig. 7 it is found that lithium ion battery in embedding just like protection shown in FIG. 1
When structure 2, maximum short circuit surface temperature is remarkably decreased, and the lithium ion battery with short-circuit protection function in the present embodiment is with aobvious
The overheat protector effect of work.
Below with reference to Fig. 8, Fig. 9 to the small size lithium battery without protection structure 2 and the small ruler with protection structure 2
Very little lithium battery battery temperature when short circuit occurs and electric current are analyzed.
Experimental program is：To a S1 types lithium battery be not added with respectively as shown in Figure 1 protection structure 2 direct short-circuit experiment and
The short circuit experiment for adding protection structure 2 as shown in Figure 1 measures battery temperature and electric current when short circuit occurs for lithium battery.The S1 type lithiums
The voltage of battery is 3.1V.The protection element 21 of the protection structure 2 is polymer positive-temperature-coefficient device.
The temperature when S1 type lithium battery short circuits of protection structure 2 as shown in Figure 1 is not added with electric current as shown in figure 8, it is maximum
Short circuit current is about 950mA, and maximum short circuit temperature is about 115 degree.Embedding has the S1 types lithium electricity of protection structure 2 as shown in Figure 1
For temperature when the short circuit of pond with electric current as shown in figure 9, its maximum short circuit current is about 250mA, maximum short circuit temperature is about 60 degree.
For the result of comparison diagram 8 and Fig. 9 it is found that small size lithium battery is when embedding is just like protection structure 2 shown in FIG. 1, maximum short circuit is electric
Stream and temperature are remarkably decreased, and the small size lithium battery with short-circuit protection function in the present embodiment is with significant overcurrent and mistake
Warm protecting effect.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiment of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of lithium battery short-circuit protection structure, which is characterized in that the lithium battery short-circuit protection structure includes the first connection sheet, protects
Protection element, the second connection sheet and embedding element,
One electrode of first connection sheet and lithium battery connects；
The protection element is connect with respect to the side of lithium battery with first connection sheet, side of the protection element far from lithium battery with
Second connection sheet connects；
The part of first connection sheet, the protection element and second connection sheet is arranged at the inside of the embedding element, should
Embedding element forms the sealing space of contact with the electrode surface of the lithium battery；And
The remainder of second connection sheet is exposed to outside sealing space, using the lead of the electrode as the lithium battery.
2. lithium battery short-circuit protection structure according to claim 1, it is characterised in that：First connection sheet and the lithium
The electrode of battery, the protection element are led to first connection sheet, the protection element with second connection sheet
It crosses riveting, welding or is attached in conjunction with riveted and welded technique.
3. lithium battery short-circuit protection structure according to claim 1, it is characterised in that：The protection element be polymer just
PTC device or current insurance silk.
4. lithium battery short-circuit protection structure according to claim 1, it is characterised in that：The embedding element is casting glue,
The embedding element is by first connection sheet, the protection element and the second connection sheet embedding in the lithium battery
The electrode surface is respectively formed contact seal with first connection sheet, the protection element and second connection sheet.
5. lithium battery short-circuit protection structure according to claim 1, it is characterised in that：The lithium battery short-circuit protection structure
Further include upper covering heat insulating element and lower covering heat insulating element,
The lower covering heat insulating element is set between the lithium battery and the protection element, and offers through-hole for described
First connection sheet passes through；
The upper covering heat insulating element is adjacent with side of the protection element far from lithium battery, and offers through-hole for described
Second connection sheet passes through；And
The upper covering heat insulating element and lower covering heat insulating element are arranged in the inside of the embedding element, the embedding element with
The electrode surface of the lithium battery forms the sealing space of contact.
6. lithium battery short-circuit protection structure according to claim 5, it is characterised in that：The upper covering heat insulating element and under
Covering heat insulating element surface area be all higher than or equal to the protection element surface area, with realize to the protection element
Covering isolation.
7. lithium battery short-circuit protection structure according to claim 5, it is characterised in that：The upper covering heat insulating element and under
The thickness range of covering heat insulating element is between 0.1mm ~ 0.5mm.
8. lithium battery short-circuit protection structure according to claim 5, it is characterised in that：First connection sheet and the lithium
The center of the electrode surface of battery connects, and the protection element is connect with respect to the center of the side of lithium battery with described first
Piece connects, and the center of side of the protection element far from lithium battery is connect with second connection sheet；And
The upper covering heat insulating element, the surface size and shape of protection element and lower covering heat insulating element and the lithium battery
The size and shape of the electrode surface is identical.
9. lithium battery short-circuit protection structure according to claim 8, it is characterised in that：The embedding element is according to
The integrally formed heat-sealing set of shape and size of lithium battery and the lithium battery short-circuit protection structure.
10. a kind of lithium battery, it is characterised in that：Including lithium battery short-circuit protection as in one of claimed in any of claims 1 to 9
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756223.6U CN207624796U (en) | 2017-12-15 | 2017-12-15 | Lithium battery short-circuit protection structure and lithium battery with the protection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756223.6U CN207624796U (en) | 2017-12-15 | 2017-12-15 | Lithium battery short-circuit protection structure and lithium battery with the protection structure |
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| CN207624796U true CN207624796U (en) | 2018-07-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632131A (en) * | 2018-12-24 | 2019-04-16 | 西安交通大学 | A kind of measuring fiber-optic grating sensor of lithium battery group temperature and its temp measuring method |
| CN109935774A (en) * | 2017-12-15 | 2019-06-25 | 无锡市华焯光电科技有限公司 | Lithium battery short-circuit protection structure, lithium battery with the protection structure and preparation method thereof |
-
2017
- 2017-12-15 CN CN201721756223.6U patent/CN207624796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935774A (en) * | 2017-12-15 | 2019-06-25 | 无锡市华焯光电科技有限公司 | Lithium battery short-circuit protection structure, lithium battery with the protection structure and preparation method thereof |
| CN109632131A (en) * | 2018-12-24 | 2019-04-16 | 西安交通大学 | A kind of measuring fiber-optic grating sensor of lithium battery group temperature and its temp measuring method |
| CN109632131B (en) * | 2018-12-24 | 2021-04-20 | 西安交通大学 | Fiber bragg grating sensor for measuring temperature of lithium battery pack and temperature measuring method thereof |
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