CN206134852U - High energy density's 18650 batteries on safe type - Google Patents
High energy density's 18650 batteries on safe type Download PDFInfo
- Publication number
- CN206134852U CN206134852U CN201620973983.1U CN201620973983U CN206134852U CN 206134852 U CN206134852 U CN 206134852U CN 201620973983 U CN201620973983 U CN 201620973983U CN 206134852 U CN206134852 U CN 206134852U
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- Prior art keywords
- battery
- shell
- retardant layer
- wall
- expanded
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to a lithium cell field discloses a high energy density's 18650 batteries on safe type, including electric core (1) and shell (2), positive plate (10) and negative pole piece (11) of containing the coiling in the electricity core. Be equipped with hole (12) on positive plate and/or the negative pole piece, the surface of electricity core is equipped with the fire -retardant layer of the thermal expansion (3), outer clamshell is located the outside on the fire -retardant layer of the thermal expansion, the inner wall of shell with it has air bed (4) to separate between the outer wall on the fire -retardant layer of the thermal expansion, be equipped with convex supporting shoe (5) on the inner wall of shell, the supporting shoe with the outer wall butt on the fire -retardant layer of the thermal expansion. The utility model discloses a 18650 battery power density is high, and the security is high, can in time prevent on fire, the explosion of battery under battery overheating.
Description
Technical field
This utility model is related to field of lithium, more particularly to a kind of battery of safety 18650 of high-energy-density.
Background technology
18650 is current modal lithium electricity packaged type, either most popular ternary material instantly, or national power
The LiFePO4 for pushing away, and the lithium titanate not yet popularized, there is 18650 specification.18650 type battery cores, using Cylindrical
Cylindrical encapsulation mode, this battery core diameter 18mm, length 65mm is widely used in charger baby, electric motor car, notebook, high light
The fields such as pocket lamp, the benefit of this class wrapper is uniform specification, facilitates automatization, large-scale production, with high mechanical strength, resistance to
The features such as impact is strong, yields is high；In addition with the square Soft Roll encapsulation of Prismatic, mobile phone and panel computer are common in, this
The most direct benefit of class wrapper is frivolous, small volume, portable.
But 18650 lithium batteries there is also some defects, such as under overcharge conditions, or in long-time service condition
Under, it may occur that cell expansion, even battery catches fire, the phenomenon of blast.It is such new in the report of each medium in recent years
News is also of common occurrence.Therefore, need badly and the security performance of existing 18650 battery is lifted.Additionally, existing 18650
Battery, during as electrokinetic cell, its energy density is high not enough, has much room for improvement.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of battery of safety 18650 of high-energy-density.
18650 battery energy density of the present utility model is high, and safe, can in time prevent battery from rising under battery overheat condition
Fire, blast.
Concrete technical scheme of the present utility model is：A kind of battery of safety 18650 of high-energy-density, including battery core 1
With shell 2, the positive plate 10 and negative plate 11 containing winding in the battery core.The positive plate and/or negative plate are provided with hole；
The outer surface of the battery core is provided with expanded by heating flame-retardant layer, and the jacket is located at the outside of the expanded by heating flame-retardant layer, institute
State and air layer is separated between the inwall of shell and the outer wall of the expanded by heating flame-retardant layer, the inwall of the shell is provided with protrusion
Support block, the support block abuts with the outer wall of the expanded by heating flame-retardant layer.
In battery of the present utility model, positive plate or/negative plate are provided with hole, by increasing capacitance it is possible to increase unit volume pole piece its
Surface area, is easy to the infiltration of electrolyte to improve the energy density of battery.Simultaneously expanded by heating flame-retardant layer is provided with battery, is heated
Expandable flame retardant layer mainly adopts polyurethane material, and also the fire-retardant powder body that can be expanded containing being heated, and being can be direct
Commercial current material.Expanded by heating flame-retardant layer can be expanded after being heated.On the one hand the effect of air layer is to be heated
The expansion of expandable flame retardant layer provides headspace, on the other hand, moreover it is possible to play cushioning effect after battery is squeezed, prevent electricity
Core is destroyed.
When battery occurs overheat condition, expanded by heating flame-retardant layer is heated and expands, and occupies the space of air layer, and will
Battery core is closely wrapped up.Because expanded by heating flame-retardant layer is contained within fire proofing, battery core is isolated with the battery external world, can be played
Flame retardant effect, prevents battery catches fire and causes the security incident of outside.On the other hand, expanded by heating flame-retardant layer is closely by battery core
Parcel, prevents battery explosion；Or cushioning effect can be played after battery explosion, weaken the energy of blast.
Preferably, the quantity of the support block is polylith, and the support block is in the periphery of the inwall of the shell
On be uniformly distributed.
Preferably, the outer wall of the shell is provided with step opening, the step opening is on outer casing inner wall
Width of the inner opening width less than the outward opening on outer shell outer wall；Sealing member, the sealing are provided with the step opening
Part is formed by connecting by seal cap and connector, and the sealed cap is located on the outward opening of step opening, the connector
Outer end is connected with seal cap, and the inner outer wall with the expanded by heating flame-retardant layer of the connector is connected.
Preferably, the width of the seal cap is equal with the outward opening width of step opening；The width of the connector
Inner opening width of the degree less than step opening.
Preferably, the step opening is uniformly distributed with sealing member on the periphery of the inwall of the shell.
When battery occurs overheat condition, expanded by heating flame-retardant layer is heated and expands, and occupies the space of air layer, now
Sealing member is outwards ejected, and seal cap departs from shell, so as to air layer is communicated with outside batteries, plays thermolysis, prevents electricity
Further receive thermal explosion in pond.When battery overheat condition is very serious, the degrees of expansion of expanded by heating flame-retardant layer is bigger, completely will
Air layer is tied up, and battery core is closely wrapped up.Because expanded by heating flame-retardant layer is contained within fire proofing, by outside battery core and battery
Boundary isolates, and can play flame retardant effect, prevents battery catches fire.On the other hand, closely battery core wrapped up, is prevented from battery quick-fried
It is fried.
It is compared with the prior art, the beneficial effects of the utility model are：18650 battery energy density of the present utility model
Height, and it is safe, battery catches fire, blast can be in time prevented under battery overheat condition.
Description of the drawings
Fig. 1 is a kind of structural representation of battery anode slice/negative plate in this utility model；
Fig. 2 is a kind of cross-sectional structure schematic diagram of battery in embodiment 1；
Fig. 3 is a kind of cross-sectional structure schematic diagram of battery in embodiment 2；
Fig. 4 is structural representation when sealing member is ejected in embodiment 2.
Reference is：It is battery core 1, shell 2, expanded by heating flame-retardant layer 3, air layer 4, support block 5, step opening 6, close
Sealing 7, seal cap 8, connector 9, positive plate 10, negative plate 11, hole 12.
Specific embodiment
With reference to embodiment, the utility model will be further described.In this utility model involved device,
Connection structure and method, if without refering in particular to, being device well known in the art, connection structure and method.
Embodiment 1
As shown in Figure 2：A kind of battery of safety 18650 of high-energy-density, including battery core 1 and shell 2, the battery core
Outer surface is provided with expanded by heating flame-retardant layer 3, the jacket located at the outside of the expanded by heating flame-retardant layer, the shell it is interior
Air layer 4 is separated between the outer wall of wall and the expanded by heating flame-retardant layer, the inwall of the shell is provided with the support block of protrusion
5, the support block is abutted with the outer wall of the expanded by heating flame-retardant layer.The quantity of wherein described support block is four pieces, four pieces
Bracer is uniformly equally spaced on the periphery of the inwall of the shell.
As shown in figure 1, the positive plate 10 and negative plate 11 containing winding in the battery core.On the positive plate and negative plate
It is provided with equally distributed hole 12.
Embodiment 2
As shown in Figure 3：A kind of battery of safety 18650 of high-energy-density, including battery core 1 and shell 2.The battery core
Outer surface is provided with expanded by heating flame-retardant layer 3, the jacket located at the outside of the expanded by heating flame-retardant layer, the shell it is interior
Air layer 4 is separated between the outer wall of wall and the expanded by heating flame-retardant layer, the inwall of the shell is provided with the support block of protrusion
5, the support block is abutted with the outer wall of the expanded by heating flame-retardant layer.The quantity of wherein described support block is four pieces, four pieces
Bracer is uniformly equally spaced on the periphery of the inwall of the shell.
As shown in figure 1, the positive plate 10 and negative plate 11 containing winding in the battery core.On the positive plate and negative plate
It is provided with equally distributed hole 12.
Additionally, the outer wall of the shell is provided with four step openings 6, four step openings are in the shell
Uniformly it is equally spaced on the periphery of wall, and setting alternate with support block.Also, the step opening is on outer casing inner wall
Inner opening width less than outward opening on outer shell outer wall width；Sealing member 7 is provided with the step opening, it is described close
Sealing is formed by connecting by seal cap 8 and connector 9, and the sealed cap is located on the outward opening of step opening, the connection
The outer end of part is connected with seal cap, and the inner outer wall with the expanded by heating flame-retardant layer of the connector is connected.The sealing
The width of cap is equal with the outward opening width of step opening；Inner opening width of the width of the connector less than step opening
Degree.
As shown in figure 4, when battery occurs overheat condition, expanded by heating flame-retardant layer is heated and expands, and occupies air layer
Space, now sealing member outwards ejected, seal cap depart from shell, so as to air layer is communicated with outside batteries, play radiating
Effect, prevents battery from further receiving thermal explosion.When battery overheat condition is very serious, the degrees of expansion of expanded by heating flame-retardant layer
It is bigger, air layer is tied up completely, and battery core is closely wrapped up.Because expanded by heating flame-retardant layer is contained within fire proofing, will
Battery core is isolated with the battery external world, can play flame retardant effect, prevents battery catches fire.On the other hand, closely battery core wrapped up, energy
Enough prevent battery explosion.
Embodiment 3
Embodiment 3 is that the quantity of support block and step opening is 6 in embodiment 3 with the difference of embodiment 2
It is individual.And only positive plate is provided with hole.
Embodiment 4
Embodiment 4 is that the quantity of support block and step opening is 8 in embodiment 4 with the difference of embodiment 2
It is individual.
The above, is only preferred embodiment of the present utility model, and not this utility model is imposed any restrictions, every
Above example is made any simple modification, change and equivalent structure transformation according to this utility model technical spirit, still
Belong to the protection domain of technical solutions of the utility model.
Claims (5)
1. a kind of battery of safety 18650 of high-energy-density, including battery core（1）And shell（2）, containing winding in the battery core
Positive plate（10）And negative plate（11）；It is characterized in that：The positive plate and/or negative plate are provided with hole（12）；The electricity
The outer surface of core is provided with expanded by heating flame-retardant layer（3）, the jacket is located at the outside of the expanded by heating flame-retardant layer, described outer
Air layer is separated between the outer wall of the inwall of shell and the expanded by heating flame-retardant layer（4）, the inwall of the shell is provided with protrusion
Support block（5）, the support block abuts with the outer wall of the expanded by heating flame-retardant layer.
2. a kind of battery of safety 18650 of high-energy-density as claimed in claim 1, it is characterised in that the support block
Quantity be polylith, and the support block is uniformly distributed on the periphery of the inwall of the shell.
3. the battery of safety 18650 of a kind of high-energy-density as claimed in claim 1, it is characterised in that the shell
Outer wall is provided with step opening（6）, inner opening width of the step opening on outer casing inner wall is less than in outer shell outer wall
On outward opening width；Sealing member is provided with the step opening（7）, the sealing member is by seal cap（8）And connector
（9）It is formed by connecting, on the outward opening of step opening, outer end and the seal cap of the connector connect the sealed cap
Connect, the inner outer wall with the expanded by heating flame-retardant layer of the connector is connected.
4. a kind of battery of safety 18650 of high-energy-density as claimed in claim 3, it is characterised in that the seal cap
Width it is equal with the outward opening width of step opening；Inner opening width of the width of the connector less than step opening
Degree.
5. a kind of battery of safety 18650 of the high-energy-density as described in claim 3 or 4, it is characterised in that the step
Formula opening is uniformly distributed with sealing member on the periphery of the inwall of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620973983.1U CN206134852U (en) | 2016-08-30 | 2016-08-30 | High energy density's 18650 batteries on safe type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620973983.1U CN206134852U (en) | 2016-08-30 | 2016-08-30 | High energy density's 18650 batteries on safe type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206134852U true CN206134852U (en) | 2017-04-26 |
Family
ID=58566439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620973983.1U Expired - Fee Related CN206134852U (en) | 2016-08-30 | 2016-08-30 | High energy density's 18650 batteries on safe type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206134852U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446374A (en) * | 2019-08-12 | 2019-11-12 | 珠海格力电器股份有限公司 | Novel fireproof electrical box applied to air conditioner |
| CN114069167A (en) * | 2022-01-18 | 2022-02-18 | 江苏时代新能源科技有限公司 | Secondary battery, battery module, battery pack, and electric device |
-
2016
- 2016-08-30 CN CN201620973983.1U patent/CN206134852U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446374A (en) * | 2019-08-12 | 2019-11-12 | 珠海格力电器股份有限公司 | Novel fireproof electrical box applied to air conditioner |
| CN114069167A (en) * | 2022-01-18 | 2022-02-18 | 江苏时代新能源科技有限公司 | Secondary battery, battery module, battery pack, and electric device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20200830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |