CN209515924U - Battery pack and secondary cell - Google Patents
Battery pack and secondary cell Download PDFInfo
- Publication number
- CN209515924U CN209515924U CN201822227999.XU CN201822227999U CN209515924U CN 209515924 U CN209515924 U CN 209515924U CN 201822227999 U CN201822227999 U CN 201822227999U CN 209515924 U CN209515924 U CN 209515924U
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- Prior art keywords
- material layer
- core
- outside
- thermal insulator
- thermal
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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 provides a kind of battery pack and secondary cell, secondary cell includes shell, top cover and the battery core in the shell and the top cover enclosed space, the battery core includes spaced multiple core, the first thermal insulator between adjacent core and/or the second thermal insulator between outside core and the shell, first thermal insulator includes the first insulation material layer set gradually from the inside to the outside, first thermal conductive material layer and the first outside barrier, second thermal insulator includes the second insulation material layer set gradually from the inside to the outside, second thermal conductive material layer and the second outside barrier.In the utility model, being thermally isolated between core is realized by the first thermal insulator, being thermally isolated between outside core and shell is realized by the second thermal insulator, and be classified heat-insulated, the thickness for reducing each thermal insulator will not impact entire battery energy density.
Description
Technical field
The utility model relates to battery technology fields, especially provide a kind of battery pack and secondary cell.
Background technique
Favor with market to high-specific energy battery, battery safety problem have also put on schedule.And ternary battery core
High-energy-density and battery core thermal runaway triggering factors diversity, not can avoid in battery use process battery core occur heat lose
Control, therefore, current Normal practice makes battery pack when thermal runaway occurs for single battery core, electricity by battery pack Design on thermal insulation in the industry
Thermal diffusion does not occur between pond.However, thermal insulation layer is arranged between battery pack cannot achieve thermal diffusion in the insufficient situation of thickness
Effectively inhibit, and thickens the reduction that thermal insulation layer can directly result in the volume energy density of whole packet.In addition, due to battery core usually by
Multiple core are constituted, if individually core is out of control can be transferred to remaining core, are caused the amount of heat short time quickly to generate, are also increased
The difficulty of the spaced heat of battery.
Utility model content
The purpose of this utility model is to provide a kind of battery pack and secondary cells, it is intended to solve in battery in the prior art
The technical problem of portion's heat insulation difference.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: secondary cell, including shell, top cover
And the battery core in the shell and the top cover enclosed space, the battery core include spaced multiple core, set
The first thermal insulator between adjacent core, and/or the second thermal insulator between outside core and the shell, described
One thermal insulator includes the first insulation material layer set gradually from the inside to the outside, the first thermal conductive material layer and the first outside isolation
Layer, second thermal insulator includes the second insulation material layer set gradually from the inside to the outside, the second thermal conductive material layer and second
Outside barrier.
Further, first insulation material layer is aerogel blanket, and second insulation material layer is aerogel blanket.
Further, first thermal conductive material layer is heat conductive graphite piece；Second thermal conductive material layer is heat conductive graphite
Piece.
Further, first outside barrier is polyimides glue；Second outside barrier is polyimides
Glue.
Further, first outside barrier is coated with erosion resistant coating；And/or it is coated in second outside barrier
There is erosion resistant coating.
Further, it is parallel to the core length direction in first thermal conductive material layer and is provided with the first heat-conducting piece；
It is parallel to the core length direction in second thermal conductive material layer and is provided with the second heat-conducting piece.
The utility model additionally provides a kind of battery pack, multiple secondary electricity including shell and in the shell
Pond, the secondary cell have above-mentioned structure.
The utility model has the beneficial effects that
In the utility model, the first thermal insulator is set between internal multiple core, core is realized by the first thermal insulator
Between be thermally isolated, moreover, the first thermal insulator include the first insulation material layer, the first thermal conductive material layer and first outside isolation
Layer guarantees that battery other core when single core is out of control are not out of control by three layers of isolation structure or extends the triggered time out of control；
Alternatively, the second thermal insulator is arranged between core and shell on the outside, moreover, the second thermal insulator includes the second insulation material layer, the
Two thermal conductive material layers and the second outside barrier heat up when outside core is influenced by the external world, or by external mechanical
Stress and when short circuit occurs, by avoiding temperature from avoiding internal temperature from expanding by reaching interior roll core outside by three layers of isolation structure
It dissipates；Alternatively, the first thermal insulator and the second thermal insulator are arranged simultaneously, it is classified by the first thermal insulator of setting with the second thermal insulator
It is heat-insulated, while enhancing heat insulation, the thickness of each thermal insulator is reduced, shadow not will cause to entire battery energy density
It rings.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic cross-sectional view of secondary cell provided by the embodiment of the utility model；
Fig. 2 is the schematic cross-sectional view of the first thermal insulator in secondary cell provided by the embodiment of the utility model；
Fig. 3 is the schematic cross-sectional view of battery pack provided by the embodiment of the utility model；
Wherein, each appended drawing reference in figure:
1- secondary cell；10- shell；20- top cover；30- core；31- tab；The first thermal insulator of 40-；41- first is heat-insulated
Material layer；The first thermal conductive material layer of 42-；The first outside barrier of 43-；The second thermal insulator of 50-；60- connection sheet.
Specific embodiment
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, it is intended to 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 " length ", " width ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to FIG. 1, secondary cell 1 provided by the embodiment of the utility model, including shell 10, top cover 20 and it is set to shell
Battery core in body 10 and 20 enclosed space of top cover, battery core include spaced multiple core 30, are set between adjacent core 30
The first thermal insulator 40, and/or the second thermal insulator 50 between outside core 30 and shell 10, the tab 31 of each core 30
Connect by connection sheet 60 with top cover 20, the first thermal insulator 40 include set gradually from the inside to the outside the first insulation material layer 41,
First thermal conductive material layer 42 and the first outside barrier 43, the second thermal insulator 50 include set gradually from the inside to the outside second every
Hot material layer, the second thermal conductive material layer and the second outside barrier.
In the present embodiment, first thermal insulator 40 is set between internal multiple core 30, is realized by the first thermal insulator 40
Being thermally isolated between adjacent core 30, moreover, the first thermal insulator 40 includes the first insulation material layer 41, the first thermal conductive material layer 42
And first outside barrier 43, guarantee that battery other core 30 when single core 30 is out of control are not lost by three layers of isolation structure
Control or extend the triggered time out of control；Alternatively, the second thermal insulator 50 is set between core 30 and shell 10 merely on outer side, moreover, the
Two thermal insulators 50 include the second insulation material layer, the second thermal conductive material layer and the second outside barrier, when outside core 30 by
Influence and heat up to the external world, or when short circuit is occurred by external mechanical stress, by three layers of isolation structure avoid temperature by
Interior roll core 30 is reached outside, internal temperature is avoided to spread；Alternatively, the first thermal insulator 40 and the second thermal insulator 50 are arranged simultaneously, lead to
It crosses the first thermal insulator 40 and be classified with the second thermal insulator 50 heat-insulated, the thickness of each thermal insulator is reduced, to entire battery energy
Metric density will not impact.
As shown in Fig. 2, specifically, the first insulation material layer 41 is aerogel blanket, its main feature is that thermal coefficient is low, and it is
The minimum solid insulating material of thermal coefficient in 400 DEG C of temperature regions.First thermal conductive material layer 42 is heat conductive graphite piece, thermally conductive stone
Ink sheet with unique crystal grain be orientated, can along length and width both direction uniform heat conduction, and its it is laminar structured can be fine
Ground adapts to any surface, also provides in terms of thickness while Homogeneouslly-radiating and is effectively thermally isolated.First outside barrier 43
For polyimides glue, PI glue that is to say, maximum feature is high temperature resistant.Using above-mentioned tool, there are three types of the heat-insulated guarantors of different characteristics
Sheath farthest highlights the heat-proof quality of the first thermal insulator 40.Certainly, the first insulation material layer 41, the first Heat Conduction Material
Layer 42 and the first outside barrier 43 can also select the material of other good heat conductivities to be made, and be not limited to the present embodiment above-mentioned institute
It enumerates.
Moreover, the first insulation material layer 41, the first thermal conductive material layer 42 and the first outside barrier 43 are light and thin
Material, will not cause damages to the specific energy of battery.
In the present embodiment, it is preferable that the first thermal insulator 40 and the above structure having the same of the second thermal insulator 50, herein not
It illustrates again.Certainly, the second thermal insulator 50 can also be respectively adopted different materials from the first thermal insulator 40 and be made.
In the present embodiment, since the first thermal insulator 40 is between two adjacent core 30, when core 30 heats up, inside
Electrolyte is by the risk flowed out, and to enhance heat-insulated and extending the triggered time, the first outside barrier 43 is coated with erosion resistant coating.Equally
Ground is also coated with erosion resistant coating in the second outside barrier.
Further, in this embodiment it is thermally conductive that 30 length direction of core is provided with first in the first thermal conductive material layer 42
Part (not shown).First heat-conducting piece is parallel to the setting of 30 length direction of core, in this way, heat is from the length for being parallel to core 30
Direction transmitting is spent, and less perpendicular to 30 direction heat transfer of core, heat insulation is more preferable.Similarly, the second Heat Conduction Material
30 length direction of core is provided with the second heat-conducting piece in layer, in this way, the second heat-conducting piece is parallel with core 30, that is to say and shell
10 is parallel, and heat is parallel to 10 direction of shell and is transferred on shell 10, and heat transfer is few in vertical direction.
Referring to Fig. 3, the present embodiment additionally provides a kind of battery pack, including shell (not shown) and is set in shell
Multiple above-mentioned secondary cells 1 (it is two that secondary cell is shown in figure).The shell 10 of adjacent secondary cell 1 reclines setting.
I.e. there are two the second thermal insulators 50 between the shell 10 of two neighboring secondary cell, even if one of secondary cell occurs
Temperature rise also effectively avoids or slows down the heat transmitting between secondary cell by the heat-blocking action of two layers of second thermal insulators 50.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of secondary cell, including shell, top cover and the battery core in the shell and the top cover enclosed space,
Be characterized in that: the battery core includes spaced multiple core, the first thermal insulator between adjacent core, and/or is set
The second thermal insulator between outside core and the shell, first thermal insulator include first set gradually from the inside to the outside
Insulation material layer, the first thermal conductive material layer and the first outside barrier, second thermal insulator include successively setting from the inside to the outside
The second insulation material layer, the second thermal conductive material layer and the second outside barrier set.
2. secondary cell according to claim 1, it is characterised in that: first insulation material layer is aerogel blanket, institute
Stating the second insulation material layer is aerogel blanket.
3. secondary cell according to claim 1, it is characterised in that: first thermal conductive material layer is heat conductive graphite piece；
Second thermal conductive material layer is heat conductive graphite piece.
4. secondary cell according to claim 1, it is characterised in that: first outside barrier is polyimides glue；
Second outside barrier is polyimides glue.
5. secondary cell according to claim 1, it is characterised in that: first outside barrier is coated with erosion resistant coating；
And/or erosion resistant coating is coated in second outside barrier.
6. secondary cell according to claim 1, it is characterised in that: be parallel to the volume in first thermal conductive material layer
Core length direction is provided with the first heat-conducting piece；It is parallel to the core length direction in second thermal conductive material layer and is provided with
Two heat-conducting pieces.
7. a kind of battery pack, multiple secondary cells including shell and in the shell, it is characterised in that: described secondary
Battery is secondary cell described in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822227999.XU CN209515924U (en) | 2018-12-27 | 2018-12-27 | Battery pack and secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822227999.XU CN209515924U (en) | 2018-12-27 | 2018-12-27 | Battery pack and secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209515924U true CN209515924U (en) | 2019-10-18 |
Family
ID=68197917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822227999.XU Active CN209515924U (en) | 2018-12-27 | 2018-12-27 | Battery pack and secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209515924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828944A (en) * | 2019-11-20 | 2020-02-21 | 中车大连机车车辆有限公司 | Power storage battery system heat insulation device for rolling stock |
-
2018
- 2018-12-27 CN CN201822227999.XU patent/CN209515924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828944A (en) * | 2019-11-20 | 2020-02-21 | 中车大连机车车辆有限公司 | Power storage battery system heat insulation device for rolling stock |
| CN110828944B (en) * | 2019-11-20 | 2023-02-21 | 中车大连机车车辆有限公司 | Power storage battery system heat insulation device for rolling stock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200511 Granted publication date: 20191018 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230511 Granted publication date: 20191018 |