CN205723865U - Heat radiation bag and battery modules - Google Patents
Heat radiation bag and battery modules Download PDFInfo
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- CN205723865U CN205723865U CN201620577666.8U CN201620577666U CN205723865U CN 205723865 U CN205723865 U CN 205723865U CN 201620577666 U CN201620577666 U CN 201620577666U CN 205723865 U CN205723865 U CN 205723865U
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- encapsulating film
- heat radiation
- radiation bag
- punching hole
- sealing
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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
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Abstract
This utility model provides a kind of heat radiation bag and battery modules.Heat radiation bag includes: the first encapsulating film and the second encapsulating film；First encapsulating film has multiple the first spaced and outwardly punching hole, each first punching hole is internal is filled with phase-change material, second encapsulation membrane cover sets the first encapsulating film, the edge of the first encapsulating film forms the first sealing portion with the edge sealing of the second encapsulating film, the part between two first adjacent punching holes of the first encapsulating film seals with the correspondence position of the second encapsulating film and forms the second sealing portion, and the sealing strength in the second sealing portion is less than the sealing strength in the first sealing portion.Battery modules includes the multiple cells arranged along orientation, wherein, is at least provided with between two adjacent cells according to the heat radiation bag described in this utility model first aspect.Heat radiation bag of the present utility model can absorb the heat of cell, improves the radiating efficiency of battery modules, and provides the expansion space of cell, it is to avoid heat radiation bag spalling.
Description
Technical field
This utility model relates to field of batteries, particularly relates to a kind of heat radiation bag and battery modules.
Background technology
In the prior art, phase-change material is used to absorb the heat of cell in battery modules.But, prior art
There is a lot of defect, such as: 1) phase-change material is not encapsulated effectively, there is the risk of flowing after phase-change material heat absorption；
2) simply phase-change material is simply encapsulated, easily rack the packaging bag of phase-change material when cell expands, cause
Phase-change material leaks；3) cannot effectively discharge the heat that phase-change material absorbs, form heat accumulation to a certain extent.
In July, 2007, Chinese patent literature CN2927335Y of Granted publication on the 25th discloses and a kind of has absorber
Cell apparatus, phase-change material has simple encapsulation, also forms the air channel of heat radiation, but is not intended for the space that cell expands,
Therefore when cell expands, phase-change material will be squeezed, and packaging bag easily ftractures, or after phase-change material absorbs heat
Self expands, and easily packaging bag spalling, causes the leakage of phase-change material.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of heat radiation bag and battery mould
Group, it can absorb the heat of cell, the radiating efficiency of raising battery modules, and provide the expansion space of cell, keep away
Exempt from bag spalling of dispelling the heat.
To achieve these goals, in first aspect, this utility model provides a kind of heat radiation bag, comprising: the first envelope
Dress film and the second encapsulating film；Wherein, the first encapsulating film has multiple the first spaced and outwardly punching and cheats, and each first
Punching hole is internal is filled with phase-change material, and the second encapsulation membrane cover sets the first encapsulating film, the edge of the first encapsulating film and the second envelope
The edge sealing of dress film forms the first sealing portion, the part between two first adjacent punching holes of the first encapsulating film
Seal with the correspondence position of the second encapsulating film and form the second sealing portion, and the sealing strength in the second sealing portion is less than the first sealing portion
Sealing strength.
To achieve these goals, in second aspect, this utility model provides a kind of battery modules, and it includes along arrangement
Multiple cells that direction is arranged, wherein, are at least provided with according to this utility model between two adjacent cells
Heat radiation bag described in first aspect.
The beneficial effects of the utility model are as follows:
According in heat radiation bag of the present utility model and battery modules, the heat radiation between two adjacent cells is wrapped
In first punching hole, phase-change material can absorb the heat that corresponding cell produces, and improves the service life of battery；Cell
The phase-change material in the first punching hole can be extruded during expanded by heating, and owing to the sealing strength in the second sealing portion is less than the first sealing portion
Sealing strength, so can first strut the second sealing portion during phase-change material pressurized and in space that inflow struts, without supportting
Open the first sealing portion, it is to avoid heat radiation bag spalling and the leakage of phase-change material, provide expansion space for battery modules simultaneously；Separately
Outward, multiple first on the first encapsulating film rushes hole and is spaced from each other, therefore between adjacent two the first punching holes of the first encapsulating film
Form air flow channel, contribute to cooling gas and the phase-change material heat exchange in the external world, improve the radiating efficiency of battery modules.
Accompanying drawing explanation
Fig. 1 is the sectional view of the embodiment according to heat radiation bag of the present utility model；
Fig. 2 is the schematic diagram of the heat radiation bag omission phase-change material of Fig. 1；
Fig. 3 is the axonometric chart before first encapsulating film of Fig. 2 and the sealing of the second encapsulating film；
Fig. 4 is the sectional view of another embodiment according to heat radiation bag of the present utility model；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the axonometric chart according to battery modules of the present utility model, and omits end plate；
Fig. 7 is the side view of Fig. 6.
Wherein, description of reference numerals is as follows:
1 heat radiation bag Z seals district
11 first encapsulating film M phase-change materials
111 first punching hole 2 cells
12 second encapsulating film D orientations
121 second punching hole W widths
P1 the first sealing portion L length direction
P2 the second sealing portion
Detailed description of the invention
Describe heat radiation bag of the present utility model and battery modules with reference to the accompanying drawings in detail.
Referring to figs. 1 through Fig. 7, include according to heat radiation bag 1 of the present utility model: the first encapsulating film 11 and the second encapsulating film
12；Wherein, the first encapsulating film 11 has multiple spaced and outwardly first and rushes hole 111, and each first punching hole 111 is internal
Being filled with phase-change material M, the second encapsulating film 12 lid sets the first encapsulating film 11, the edge of the first encapsulating film 11 and the second encapsulation
The edge sealing of film 12 forms the first sealing portion P1, the first encapsulating film 11 be positioned at adjacent two first rush hole 111 it
Between the correspondence position of part and the second encapsulating film 12 seal and form the second sealing portion P2, and the sealing strength of the second sealing portion P2
Sealing strength less than the first sealing portion P1.
In the embodiment according to heat radiation bag 1 of the present utility model, referring to figs. 1 through Fig. 3, the second encapsulating film 12 has many
Individual second rushes hole 121, and the second punching hole 121 is in opposite direction with what the first punching hole 111 was protruded；Second punching hole 121 is internal to be filled with
Phase-change material M.
In the embodiment according to heat radiation bag 1 of the present utility model, with reference to Fig. 1, at least one second punching hole 121 is with each
111 positions, self-corresponding first punching hole relatively and connect and fill phase-change material M together.
In the embodiment according to heat radiation bag 1 of the present utility model, with reference to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, the second sealing portion
P2 has multiple sealing district Z, and the sealing strength that the sealing strength of each sealing district Z is less than the first sealing portion P1.Heat radiation bag 1 is subject to
During extruding (such as by the expansive force of aftermentioned cell 2), phase-change material M can progressively strut sealing district Z, to improve heat radiation
Bag collecting volume within 1, it is to avoid heat radiation bag 1 spalling and the leakage of phase-change material M.
In the embodiment according to heat radiation bag 1 of the present utility model, with reference to Fig. 3, the plurality of first punching hole 111 is
Cuboid, and each first punching hole 111 in the width direction W be parallel to each other.
In the embodiment according to heat radiation bag 1 of the present utility model, with reference to Fig. 3, the plurality of second punching hole 121 is
Cuboid, and each second punching hole 121 in the width direction W be parallel to each other.
In the embodiment according to heat radiation bag 1 of the present utility model, with reference to Fig. 5, the first punching hole of the first encapsulating film 11
111 in the width direction W and length direction L line up array.
In the embodiment according to heat radiation bag 1 of the present utility model, by bonding agent to the first encapsulating film 11 and second
Encapsulating film 12 seals.
In the embodiment according to heat radiation bag 1 of the present utility model, by heat sealing machine to the first encapsulating film 11 and second
Encapsulating film 12 seals.
In the embodiment according to heat radiation bag 1 of the present utility model, the first encapsulating film 11 and the second encapsulating film 12 all wrap
Include sealing layer and be positioned at the protective layer outside sealing layer.
In the embodiment according to heat radiation bag 1 of the present utility model, sealing layer is polypropylene, polrvinyl chloride or poly-second
Alkene.Sealing layer is heat-fusible materials, together with being sealed with the second encapsulating film 12 by the first encapsulating film 11 when heat sealing machine heats.
In the embodiment according to heat radiation bag 1 of the present utility model, protective layer is nylon or PET.Protective layer be waterproof,
Material wear-resisting, that intensity is big, fusing point is high.
In the embodiment according to heat radiation bag 1 of the present utility model, protective layer is aluminium foil or steel foil.
In the embodiment according to heat radiation bag 1 of the present utility model, the first encapsulating film 11 and the second encapsulating film 12 also wrap
Include insulating barrier, be arranged on the outside of protective layer.If protective layer is metal, insulating barrier ensure that the first encapsulating film 11 and second
The insulating properties of encapsulating film 12.
In the embodiment according to heat radiation bag 1 of the present utility model, phase-change material M is solid-liquid phase change material, phase alternating temperature
Degree scope is 20 DEG C～60 DEG C.Phase-change material M can be selected for aquo-compound (such as lithium nitrate trihydrate, crystallization of calcium chloride water
Compound, sulfate crystal hydrate, sodium carbonate water of crystallization compound etc.).Can also fat hydrocarbon, polymeric polyalcohols, poly-
Organic solid-liquid phase change materials (such as paraffin) such as enol class, it is also possible to be organic solid-solid phase-change material such as polyalcohols, high score subclass
Material (such as tetramethylolmethane, neopentyl glycol etc.), or other kinds of Organic composite phase change material.Can add in phase-change material
In graphite, carbon fiber, foam metal, nano aluminium oxide, nanoscale metal particles, nanosize metal oxide granule, metal fillings
One or more highly heat-conductive material, increase composite phase-change material heat conductivility.
Secondly explanation is according to the battery modules of this utility model second aspect.
With reference to Fig. 6 and Fig. 7, include the multiple monomers electricity arranged along orientation D according to battery modules of the present utility model
Pond 2, wherein, is at least provided with according to the heat radiation described in this utility model first aspect between two adjacent cells 2
Bag 1.
According in battery modules of the present utility model, first of the heat radiation bag 1 between two adjacent cells 2 rushes
In hole 111, phase-change material M can absorb the heat that corresponding cell 2 produces, and improves the service life of battery；Cell 2
The phase-change material M in the first punching hole 111 can be extruded during expanded by heating, and owing to the sealing strength of the second sealing portion P2 is less than first
First the sealing strength of sealing portion P1, so can strut the second sealing portion P2 and space that inflow struts during phase-change material M pressurized
In, without strutting the first sealing portion P1, it is to avoid heat radiation bag 1 spalling and the leakage of phase-change material M, provide for battery modules simultaneously
Expansion space；It addition, the multiple first punching holes 111 on the first encapsulating film 11 are spaced from each other, therefore at the first encapsulating film 11
Form air flow channel between adjacent two first punching holes 111, contribute to cooling gas and the phase-change material M heat exchange in the external world, carry
The radiating efficiency of high battery modules.
In the embodiment according to battery modules of the present utility model, heat radiation bag 1 can be solid by double faced adhesive tape or structure glue
It is scheduled on the surface of cell 2.
In the embodiment according to battery modules of the present utility model, described battery modules also includes: two end plates are (not
Illustrate), it is arranged at the two ends of the plurality of cell 2 orientation D.
In the embodiment according to battery modules of the present utility model, between end plate and corresponding cell 2 also
It is provided with heat radiation bag 1.
Claims (10)
1. heat radiation bag (1), including:
First encapsulating film (11)；And
Second encapsulating film (12)；
It is characterized in that,
First encapsulating film (11) has multiple the first spaced and outwardly punching hole (111), in each first punching hole (111)
Portion is filled with phase-change material (M), and the second encapsulating film (12) lid sets the first encapsulating film (11), the edge of the first encapsulating film (11)
Seal with the edge of the second encapsulating film (12) and form the first sealing portion (P1), the first encapsulating film (11) be positioned at adjacent two
Part between individual first punching hole (111) seals formation the second sealing portion (P2) with the correspondence position of the second encapsulating film (12), and
The sealing strength in the second sealing portion (P2) is less than the sealing strength in the first sealing portion (P1).
Heat radiation bag (1) the most according to claim 1, it is characterised in that
Second encapsulating film (12) has multiple second and rushes hole (121), and the second punching hole (121) rushes what hole (111) was protruded with first
In opposite direction；
Second punching hole (121) is internal is filled with phase-change material (M).
Heat radiation bag (1) the most according to claim 2, it is characterised in that
At least one second punching hole (121) with each self-corresponding first punching hole (111) position relative and connection and together with fill phase
Become material (M).
Heat radiation bag (1) the most according to claim 1, it is characterised in that the second sealing portion (P2) has multiple sealing district
(Z) sealing strength sealing strength less than the first sealing portion (P1) in district (Z), and is respectively sealed.
Heat radiation bag (1) the most according to claim 1, it is characterised in that the plurality of first punching hole (111) is rectangular
Body, and each first punching hole (111) (W) in the width direction be parallel to each other.
Heat radiation bag (1) the most according to claim 2, it is characterised in that the plurality of second punching hole (121) is rectangular
Body, and each second punching hole (121) (W) in the width direction be parallel to each other.
Heat radiation bag (1) the most according to claim 1 and 2, it is characterised in that the first punching hole of the first encapsulating film (11)
(111) in the width direction (W) and length direction (L) line up array.
Heat radiation bag (1) the most according to claim 1, it is characterised in that the first encapsulating film (11) and the second encapsulating film (12)
All include sealing layer and being positioned at the protective layer outside sealing layer.
Heat radiation bag (1) the most according to claim 1, it is characterised in that phase-change material (M) is solid-liquid phase change material.
10. a battery modules, including the multiple cells (2) arranged along orientation (D), it is characterised in that
At least it is provided with according to the heat radiation bag according to any one of claim 1-9 between two adjacent cells (2)
(1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577666.8U CN205723865U (en) | 2016-06-13 | 2016-06-13 | Heat radiation bag and battery modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577666.8U CN205723865U (en) | 2016-06-13 | 2016-06-13 | Heat radiation bag and battery modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723865U true CN205723865U (en) | 2016-11-23 |
Family
ID=57305873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620577666.8U Active CN205723865U (en) | 2016-06-13 | 2016-06-13 | Heat radiation bag and battery modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205723865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3916514A1 (en) * | 2020-05-28 | 2021-12-01 | Google LLC | Thermal management of battery units on data center racks |
-
2016
- 2016-06-13 CN CN201620577666.8U patent/CN205723865U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3916514A1 (en) * | 2020-05-28 | 2021-12-01 | Google LLC | Thermal management of battery units on data center racks |
| US11895807B2 (en) | 2020-05-28 | 2024-02-06 | Google Llc | Thermal management of battery units on data center racks |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |