CN115498324A - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN115498324A CN115498324A CN202211357196.0A CN202211357196A CN115498324A CN 115498324 A CN115498324 A CN 115498324A CN 202211357196 A CN202211357196 A CN 202211357196A CN 115498324 A CN115498324 A CN 115498324A
- Authority
- CN
- China
- Prior art keywords
- heating film
- battery module
- battery pack
- battery
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 107
- 239000004519 grease Substances 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 229920001296 polysiloxane Polymers 0.000 claims 2
- 238000005452 bending Methods 0.000 abstract description 11
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 16
- 238000001816 cooling Methods 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 229920002799 BoPET Polymers 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the technical field of batteries and discloses a battery pack, which comprises a box body, wherein the box body is used for containing a battery module; a heating film is arranged between the box body and the battery module and connected with the battery module, and a heat conduction grease condensation layer is arranged between the heating film and the battery module. Through set up heat conduction grease layer of congealing between heating film and battery module, bond battery module and heating film together completely, can avoid because the risk that the resistance wire in the vibration messenger heating film appears bending, rupture, improve heating efficiency, reduce the inefficacy risk to increase the reliability of whole battery package.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack.
Background
The lithium battery has poor low-temperature characteristics, and when the lithium battery is used at low temperature, a heating function needs to be provided for the lithium battery, so that the lithium battery can normally operate. The most widely used heating device is a heating film, the heating film and a battery module in most of lithium batteries are directly bonded and fixed at present, for example, patent document 202120199426.X discloses that a front heating film and a rear heating film are respectively attached to a front fixing sheet metal guard plate and a rear fixing sheet metal guard plate with back glue; also, as disclosed in patent document 202122729673.9, "the lower PI heating film insulating layer has 3M adhesive, and the adhesion and fixation can be completed only by attaching the 3M adhesive on the inner side of the lower PI heating film insulating layer to the related equipment", when the battery pack vibrates during use, the heating film is easily dislocated, and then there is a risk of bending and breaking the resistance wire, which affects the overall heating performance of the battery pack and reduces the reliability of the entire battery pack.
Disclosure of Invention
The invention aims to provide a battery pack, which can avoid the risk of bending and breaking a resistance wire in a heating film due to vibration and improve the reliability of the whole battery pack.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery pack, comprising:
the box body is used for containing the battery module;
the heating film is arranged between the battery module and the box body and is connected with the battery module;
and a heat conduction grease condensation layer is arranged between the heating film and the battery module.
Preferably, the heat conductive grease layer covers a contact surface between the heating film and the battery module.
Preferably, one end surface of the heat conductive grease layer is bonded to the battery module, and the other end surface of the heat conductive grease layer is bonded to the heating film
Preferably, the contact surface between the heating film and the heat conductive grease layer and the contact surface between the battery module and the heat conductive grease layer have the same shape and area.
Preferably, the heating film has a hollow structure.
Preferably, the hollow structures are rectangular and distributed along the length direction of the heating film.
Preferably, a heat conduction structural adhesive is arranged between the heating film and the box body.
Preferably, the box body is provided with a containing groove, and the battery module is arranged in the containing groove; the heat-conducting structural adhesive is adhered between the heating film and the bottom of the accommodating groove; the heat-conducting structural adhesive covers at least 1/3 of the area of the heating membrane.
Preferably, the heating film is provided with a bending part, the bending part is detachably connected with the box body, and the bending part is arranged at the edge of the heating film.
Preferably, the heat dissipation structure comprises a liquid cooling guide plate, and the liquid cooling guide plate is laid on the opposite side of the bottom of the box body where the heating film is located.
The invention has the beneficial effects that:
through being equipped with heat conduction between heating film and the battery module and congealing the fat layer, can bond battery module and heating film together completely, the fat layer is congealed in the heat conduction simultaneously has better elasticity, has avoided because battery module's vibration in the use, and the heating efficiency that the risk caused such as messenger's resistance wire in the heating film appears bending, rupture to low or the trouble that became invalid to increase the reliability of whole battery package.
Drawings
Fig. 1 is an exploded view of a battery pack according to the present invention;
fig. 2 is an exploded view of a heating film in the battery pack according to the present invention;
fig. 3 is a schematic view showing a heat dissipation structure in the battery pack according to the present invention;
fig. 4 is a schematic view showing a liquid passing hole and a bottom plate in the battery pack according to the present invention.
In the figure:
1-a battery module; 2-heat conducting gel coat; 3-heating the film; 31-hollow structure; 32-a bending part; 33-a PET film; 34-a heat-generating aluminum sheet; 4-heat-conducting structural adhesive; 5-a box body; 51-a receiving groove; 52-a base plate; 6-a heat dissipation structure; 61-liquid cooled fluidic plates; 62-liquid cooling the flow guiding column; 63-liquid passing hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1, the battery includes a case 5 for housing the battery module 1; a heating film 3 is arranged between the box body 5 and the battery module 1, the heating film 3 is connected with the battery module 1, and a heat conduction grease condensation layer 2 is arranged between the heating film 3 and the battery module 1.
Through increasing heat conduction grease layer 2 between heating film 3 and battery module 1, bond battery module 1 and heating film 3 together completely, the grease layer that congeals of heat conduction has better elasticity simultaneously, can avoid making the resistance wire in the heating film 3 appear bending because battery module 1's vibration, risks such as rupture, cause the trouble that heating efficiency is low or became invalid, simultaneously, bond through heat conduction structure glue 4 at heating film 3 and box 5, avoid appearing the phenomenon of dry combustion method, thereby increase the reliability of whole battery package.
In the following, the present embodiment is described in detail, and the battery pack includes a case 5, the case 5 being used for accommodating the battery module 1; in this embodiment, the box 5 is provided with the storage tank 51, the battery module 1 is disposed in the storage tank 51, in this embodiment, the battery module 1 is formed by connecting a plurality of electric cores in series or in parallel, the heating film 3 is disposed between the box 5 and the battery module 1, as shown in fig. 2, the heating film 3 may be formed by two PET films 33 and heating aluminum sheets 34, the heating aluminum sheets 34 are clamped between the two PET films 33, wherein the heating aluminum sheets 34 are 18 μm thick, the PET films 33 are 50 μm thick, and the heating aluminum sheets 34 are encapsulated by the PET films 33 disposed on the upper and lower sides of the heating aluminum sheets 34, so as to form insulation, and ensure the integrity of heating. In addition, this heating film 3 is connected with battery module 1, in this embodiment, heating film 3 is connected for the electricity with battery module 1, specifically, heating film 3 has kink 32 in order to fix heating film 3, avoid it to rock and lead to heating film inside (like the aluminum sheet that generates heat) to damage, influence the heating effect, kink 32 can be dismantled with box 5 and be connected, be connected kink 32 and the inner wall of box 5 through screw or bolt in this embodiment, be used for reducing rocking or the vibration of heating film 3 in the work, avoid heating film 3 because of rocking or the vibration appearance is unusual, and then influence the heating effect. The bent portion 32 is provided at the edge of the heating film 3 to increase the contact area between the heating film 3 and the battery module 1, and for the convenience of processing the bent portion 32, the bent portion 32 and the heating film 3 are integrally formed, and further, the bent portion 32 is formed by bending by pressing. Be equipped with heat conduction between heating film 3 and the battery module 1 and congeal fat layer 2, in this embodiment, heat conduction congeals a terminal surface of fat layer 2 and battery module 1's bottom surface bonding, another terminal surface and the heating film 3 bonding of heat conduction congeals fat layer 2, heat conduction congeals fat layer 2 and is formed by the tiling of heat conduction congeals the fat, congeal fat layer 2 through heat conduction and will heat and paste together between membrane 3 and the battery module 1, thereby because heat conduction congeals the fat and has better elasticity and avoid causing the risk of bending to appear in the resistance wire in the heating film 3 because battery module 1's vibration. Further, heat conduction congeals fat layer 2 and covers the surface between heating film 3 and the battery module 1, and the area of contact between increase heat conduction congeals fat layer 2 and the battery module 1, makes the inseparabler that pastes to further reduce the vibration, the shape and the area of the contact surface of heating film 3 and heat conduction congeals fat layer 2 and the contact surface of battery module 1 and heat conduction congeals fat layer 2 are the same in this embodiment, can make whole battery module 1 thermally equivalent.
The heating film 3 is clamped between the heat conducting gel layer 2 and the bottom of the box body 5, the heat conducting structure adhesive 4 is adhered between the heating film 3 and the bottom of the accommodating groove 51 in the embodiment, the HT8655 type heat conducting structure adhesive is adopted in the embodiment, and other types of heat conducting structure adhesives can be adopted in other embodiments. The heat-conducting structure glue 4 at least covers 1/3 of the area of the heating film 3, so that the two are tightly adhered to avoid shaking, and the heat-conducting structure glue can also cover the whole contact surface of the heating film 3 and the box body 5 in other embodiments. Further, hollow structures 31 are arranged on the heating film 3, and the hollow structures 31 are uniformly distributed on the heating film 3. Air bubbles generated when the heating film 3 is adhered to the bottom of the box body 5 are discharged in time through the hollow structure 31, so that the heating film 3 is prevented from being burnt dry; specifically, hollow out construction 31 evenly distributed is in heating film 3, hollow out construction 31 is the rectangle space in this embodiment, the rectangle space distributes along heating film 3's length direction and sets up, it should be said that, the design is adjusted according to battery module 1's demand to the size in rectangle space and the interval between the adjacent rectangle hole, in order to guarantee heating power, discharge in the air that makes in the bubble from hollow out construction 31 nearby, in other embodiments, also can adopt the hollow out construction of other shapes, specific shape and size do not restrict, as circular, triangle-shaped also or irregular shape all can, as long as will paste the bubble that produces catch up can. The hollow structure 31 is also filled with the heat conducting structure glue 4. The heat conduction structure glue 4 is added, so that when the heating film 3 is bonded with the box body 5, bubbles generated due to the existence of air on the surface when the heating film 3 is bonded with the box body 5 are filled, the dry burning phenomenon is avoided, and the overall reliability of the heating film 3 is improved.
The manufacturing process of the battery pack in the embodiment comprises the following steps: heat-conducting structural adhesive 4 is smeared at the bottom in a containing groove 51 in a box body 5, a heating film 3 is covered on the heat-conducting structural adhesive 4, then the heating film 3 is pressed by using a scraping edge, and bubbles between the heating film 3 and the heat-conducting structural adhesive 4 and between the heat-conducting structural adhesive 4 and the box body 5 are discharged through a nearby hollow structure 31 on the heating film 3, so that no bubbles exist between the heating film 3 and the box body 5 to prevent a dry burning phenomenon; fixing the heating film 3 on the side wall of the box body 5 through screws, coating heat conduction grease on the upper surface of the heating film 3 to form a heat conduction grease condensation layer 2, and pasting the battery module 1 with the heating film 3 through the heat conduction grease condensation layer 2.
The embodiment also provides a battery pack which comprises a heat dissipation structure 6, wherein the heat dissipation structure 6 comprises a liquid cooling guide plate 61, the liquid cooling guide plate 61 is provided with a liquid cooling guide column 61, it can be understood that the liquid cooling guide plate is provided with a liquid flow channel communicated with the liquid cooling guide column 61, the liquid cooling guide plate 61 is laid on the opposite side of the bottom of the heating film 3 and the box body 5 of the battery module 1 and is communicated with an external cooling liquid device through a liquid passing hole 63 arranged on the side edge part of the box body 5 to form a cooling liquid channel for dissipating heat of the battery module 1 so as to avoid overhigh temperature; the bottom plate 52 is disposed on the bottom of the box 5 to fix the liquid cooling baffle 61 and the box 5, and the liquid cooling baffle may be fixed by bonding or welding, where the connection mode is not particularly limited. On one hand, the battery pack can prevent a resistance wire in the heating film 3 from being broken when the battery vibrates, and on the other hand, the battery pack can also prevent the dry burning phenomenon.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. Battery package, its characterized in that includes:
the box body (5) is used for containing the battery module (1);
the heating film (3) is arranged between the battery module (1) and the box body (5), and the heating film (3) is connected with the battery module (1);
a heat-conducting grease-condensing layer (2) is arranged between the heating film (3) and the battery module (1).
2. The battery pack according to claim 1, wherein the thermally conductive grease layer (2) covers the contact surface between the heating film (3) and the battery module (1).
3. The battery pack according to claim 1, wherein one end face of the thermally conductive grease layer (2) is bonded to the battery module (1), and the other end face of the thermally conductive grease layer (2) is bonded to the heating film (3).
4. The battery pack according to claim 2, wherein the contact surface of the heating film (3) with the thermally conductive silicone grease layer (2) and the contact surface of the battery module (1) with the thermally conductive silicone grease layer (2) are the same in shape and area.
5. The battery pack according to claim 1, wherein the heating film (3) has a hollowed-out structure (31) thereon.
6. The battery pack according to claim 5, wherein the hollowed-out structures (31) are rectangular and distributed along the length direction of the heating film (3).
7. The battery pack according to any one of claims 1 to 6, wherein a heat conductive structural adhesive (4) is provided between the heating film (3) and the case (5).
8. The battery pack according to claim 7, wherein the case (5) is provided with a container (51), and the battery module (1) is disposed in the container (51); the heat-conducting structural adhesive (4) is adhered between the heating film (3) and the bottom of the accommodating groove (51); the heat-conducting structural adhesive (4) at least covers 1/3 of the area of the heating film (3).
9. The battery pack according to claim 1, wherein the heating film (3) has a bent portion (32), the bent portion (32) is detachably connected to the case (5), and the bent portion (32) is provided at an edge of the heating film (3).
10. The battery pack according to claim 1, further comprising a heat dissipating structure (6), wherein the heat dissipating structure (6) comprises a liquid-cooled baffle (61), and the liquid-cooled baffle (61) is laid on the opposite side of the bottom of the case (5) where the heating film (3) is located.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211357196.0A CN115498324A (en) | 2022-11-01 | 2022-11-01 | Battery pack |
| PCT/CN2022/144388 WO2024093012A1 (en) | 2022-11-01 | 2022-12-31 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211357196.0A CN115498324A (en) | 2022-11-01 | 2022-11-01 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115498324A true CN115498324A (en) | 2022-12-20 |
Family
ID=85115297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211357196.0A Pending CN115498324A (en) | 2022-11-01 | 2022-11-01 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115498324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093012A1 (en) * | 2022-11-01 | 2024-05-10 | 湖北亿纬动力有限公司 | Battery pack |
-
2022
- 2022-11-01 CN CN202211357196.0A patent/CN115498324A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093012A1 (en) * | 2022-11-01 | 2024-05-10 | 湖北亿纬动力有限公司 | Battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11600871B2 (en) | Battery pack | |
| EP3886226B1 (en) | Battery pack | |
| JP2018503934A (en) | Heat sink and power battery system | |
| WO2023284886A1 (en) | Battery pack | |
| CN110676421B (en) | Battery module and electric automobile | |
| CN115498324A (en) | Battery pack | |
| CN210073975U (en) | High-efficient radiating laminate polymer battery module | |
| CN111225552A (en) | Heat dissipation structure and installation method thereof | |
| CN211743350U (en) | Battery pack | |
| CN218569002U (en) | Battery pack | |
| CN218182418U (en) | Battery with a battery cell | |
| CN218569029U (en) | Battery core, battery module and battery pack | |
| CN217823040U (en) | Battery device | |
| CN217822993U (en) | Battery and battery device | |
| CN116345051A (en) | Multi-surface cooling battery module | |
| CN216958370U (en) | Battery pack and electric device | |
| CN214852485U (en) | Electric vehicle controller and electric vehicle | |
| CN214378661U (en) | Battery cell fixing structure | |
| CN217158351U (en) | Laminate polymer battery module | |
| CN217158330U (en) | Battery module | |
| CN218182317U (en) | Battery with improved battery capacity | |
| CN218473708U (en) | Heat dissipation type memory chip | |
| CN214848943U (en) | Battery module and vehicle | |
| CN218182318U (en) | Battery with a battery cell | |
| WO2024093012A1 (en) | Battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |