CN111446482A - Assembling method of battery cell module and battery cell module - Google Patents
Assembling method of battery cell module and battery cell module Download PDFInfo
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- CN111446482A CN111446482A CN202010409195.0A CN202010409195A CN111446482A CN 111446482 A CN111446482 A CN 111446482A CN 202010409195 A CN202010409195 A CN 202010409195A CN 111446482 A CN111446482 A CN 111446482A
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- battery cell
- cell module
- module
- assembling
- electric core
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000003292 glue Substances 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 14
- 239000012943 hotmelt Substances 0.000 claims abstract description 14
- 239000012790 adhesive layer Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000010073 coating (rubber) Methods 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 description 6
- 238000000576 coating method Methods 0.000 description 3
- 238000004093 laser heating Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Classifications
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- 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
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an assembling method of a battery cell module and the battery cell module, and belongs to the technical field of battery cell assembling. The assembling method of the battery cell module comprises the following steps of S1: gumming the battery cell in hot-melt pressure-sensitive adhesive to form an adhesive layer at least on the side surface of the battery cell, S2: set up a plurality of electric cores that have the glue film side by side, through glue film looks butt in order to form electric core module, S3 between the adjacent electric core: and heating and cooling the battery cell module to bond any two adjacent battery cells into a whole. Carry out the gumming to electric core, the side of electric core forms the glue film, sets up a plurality of electric cores side by side and forms electric core module, makes the glue film between arbitrary two adjacent electric cores melt as an organic whole and solidification through heating and cooling to bond a plurality of electric cores as an organic whole. The assembling method reduces the assembling cost of the battery cell module and improves the assembling efficiency of the battery cell module. Simultaneously, avoided the rubber coating inhomogeneous, improved the equipment quality of electric core module.
Description
Technical Field
The invention relates to the technical field of battery cell assembly, in particular to an assembly method of a battery cell module and the battery cell module.
Background
In the equipment of electric core module, do not influence adjacent electric core when guaranteeing that single electric core is overheated, need do thermal-insulated design between the electric core. Secondly, buffer space needs to be reserved between the electric cores to absorb the shrinkage and expansion of the electric cores in the using process, so that the risks of mutual extrusion between batteries and structural part fracture are avoided.
At present, the assembling method of the battery cell module is as follows: the blue membrane of electricity core surface parcel one deck, at blue membrane top layer coating glue, at the in-process that a plurality of electricity cores piled up, need place the blotter between two adjacent electric cores to play buffering antidetonation effect. Due to the influence of the glue coating process, it is difficult to ensure uniform glue coating on the blue film surface of the battery cell, resulting in the decrease of the bonding quality of the battery cell. Need increase the blotter between arbitrary two adjacent electric cores simultaneously, not only increased the equipment flow, increased whole thickness, the weight of electric core module moreover to and the assembly volume of electric core module, be unfavorable for the lightweight and the miniaturization of electric core module.
Therefore, there is a need for a method for assembling a battery cell module and a battery cell module, so that the battery cell module can be bonded and assembled at high quality, the assembly efficiency is improved, and the assembly cost is reduced.
Disclosure of Invention
The invention aims to provide an assembling method of a battery cell module, which is used for improving the assembling quality and the assembling efficiency of the battery cell module.
Another object of the present invention is to provide a battery cell module, so as to improve the assembling quality and the assembling efficiency of the battery cell module.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an assembling method of a battery cell module comprises the following steps:
s1: dipping the battery cell in hot-melt pressure-sensitive adhesive to form an adhesive layer at least on the side surface of the battery cell;
s2: arranging a plurality of battery cores with the glue layers side by side, wherein adjacent battery cores are abutted through the glue layers to form a battery core module;
s3: and heating and cooling the battery cell module to bond any two adjacent battery cells into a whole.
Further, the thickness of the glue layer of the battery cell is 0.7mm-1 mm.
Further, in step S2, end plates are disposed on both sides of the cell module in the thickness direction, and an extrusion force acts on the end plates.
Further, between step S2 and step S3, step S21 is further included: extrude electric core module to predetermineeing thickness, will extrude to predetermineeing thickness electric core module and the end plate is fixed through the bandage.
Further, the heating temperature of the battery cell module is 120-125 ℃, and the heating time is 0.5-1 s.
Further, the cooling temperature of the battery cell module is 20-25 ℃, and the cooling time is 3-5 min.
Further, step S3 is followed by step S4: arranging a cover plate at the upper end of the battery cell module, wherein each positive pole column and each negative pole column of the battery cell module respectively penetrate through corresponding through holes in the cover plate;
s5: each positive pole post of electricity core module all connects in one and draws forth the piece, each negative pole post of electricity core module all connects in another and draws forth the piece.
Further, step S5 is followed by step S6: and clamping an insulating protection plate to the cover plate so as to complete the assembly of the battery cell module.
The battery cell module is assembled by the battery cell module assembling method.
The utility model provides an electric core module, includes a plurality of electric cores that set up side by side, arbitrary adjacent two be provided with the glue film between the electric core, the glue film is used for a plurality of electric core bonds as an organic wholely, the material of glue film is hot melt pressure sensitive adhesive.
The invention has the beneficial effects that:
the assembling method of the battery cell module, provided by the invention, comprises the following steps of S1: gumming the battery cell in hot-melt pressure-sensitive adhesive to form an adhesive layer at least on the side surface of the battery cell, S2: set up a plurality of electric cores that have the glue film side by side, through glue film looks butt in order to form electric core module, S3 between the adjacent electric core: and heating and cooling the battery cell module to bond any two adjacent battery cells into a whole. The side of electric core is gummed to be handled to make the side of electric core form the glue film, set up a plurality of electric cores side by side and form electric core module, make the glue film between arbitrary two adjacent electric cores fuse as an organic whole and solidification through heating and cooling, in order to bond a plurality of electric cores as an organic whole. Compared with the process flow of gluing and pasting the buffer sheet in the prior art, the assembling method of the battery cell module not only reduces the assembling cost of the battery cell module, but also improves the assembling efficiency of the battery cell module. Simultaneously, avoided the inhomogeneous phenomenon of rubber coating, increased the bonding area between the electric core, improved the equipment quality of electric core module.
The battery cell module provided by the invention is assembled by adopting the assembling method of the battery cell module, so that the assembling cost of the battery cell module is reduced, and the assembling efficiency of the battery cell module is improved. Simultaneously, avoided the inhomogeneous phenomenon of rubber coating, increased the bonding area between the electric core, improved the equipment quality of electric core module.
Drawings
Fig. 1 is a schematic main flow chart of an assembly method of a battery cell module according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a detailed assembling method of a battery cell module according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. 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 but not all of the elements associated with the present invention are shown in the drawings.
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.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
As shown in fig. 1, the present embodiment provides an assembly method of a battery cell module, including the following steps S1: gumming the battery cell in the hot-melt pressure-sensitive adhesive to form an adhesive layer at least on the side surface of the battery cell, S2: set up a plurality of electric cores that have the glue film side by side, through glue film looks butt in order to form electric core module, S3 between the adjacent electric core: and heating and cooling the battery cell module to bond any two adjacent battery cells into a whole. The side of electric core is gummed to be handled to make the side of electric core form the glue film, set up a plurality of electric cores side by side and form electric core module, make the glue film between arbitrary two adjacent electric cores fuse as an organic whole and solidification through heating and cooling, in order to bond a plurality of electric cores as an organic whole. Compare in the rubber coating among the prior art and paste the process flow of buffer block, not only reduced the equipment cost of electric core module, improved the packaging efficiency of electric core module moreover. Simultaneously, avoided the inhomogeneous phenomenon of rubber coating, increased the bonding area between the electric core, improved the equipment quality of electric core module.
In the embodiment, the material of the adhesive layer is preferably hot melt pressure sensitive adhesive, and the model of the hot melt pressure sensitive adhesive can be Technomelt-8210Ev and is not limited to the model. After the battery cell is subjected to gum dipping treatment, the side surface of the periphery of the battery cell can form a glue layer, the thickness range of the glue layer is 0.7mm-1mm, the thickness value of the glue layer is further preferably 0.8mm, any two adjacent battery cells can be tightly bonded by the thickness value, the using amount of the hot-melt pressure-sensitive adhesive is reduced, and the assembling volume and weight of the battery cell module are reduced. And when extrusion electric core module, the compression ratio of hot melt pressure sensitive adhesive can reach 10% for there is certain pretightning force between two arbitrary adjacent electric cores in the electric core module, is favorable to improving the bonding quality and the life of electric core module. The fracture elongation of hot melt pressure sensitive adhesive can reach 1000%, when having guaranteed that the electric core in the electric core module takes place volume expansion at the charge-discharge in-process, the glue film can not take place fracture inefficacy. Of course, in other embodiments, the thickness of the glue layer may also be set according to actual needs, such as 0.7mm, 0.9mm, 1mm, and the like.
It should be noted that, in this embodiment, the battery cell module is placed in the temperature box capable of realizing high and low temperature adjustment to perform local heating and cooling. Be provided with laser heating device in the temperature box, laser heating device is used for carrying out local high temperature heating to the glue film in the electric core module, has avoided heating the whole of electric core module, leads to electric core to receive the dangerous condition of high temperature initiation. It can be understood that an infrared heating device can be further arranged in the temperature box, and local high-temperature heating is carried out on the glue layer by irradiating the glue layer between the battery cell modules. The temperature box capable of realizing temperature regulation and the laser heating device and the infrared heating device in the temperature box are mature products in the field, and the specific structure and the working process are not repeated. The softening temperature of the hot-melt pressure-sensitive adhesive is 120 ℃. Therefore, the heating temperature of the battery cell module is 120-125 ℃, and the heating time is preferably 0.5-1 s. And then adjusting the temperature in the temperature box to 25 ℃, adjusting the time to 10s, and placing the battery cell module in the temperature box at 25 ℃ for 3-5 min to bond any two adjacent battery cells into a whole. It should be noted that the heating time is too short, and the glue layer can not be softened and fused into a whole; if the heating time is too long, the adhesive layer may melt and fall off from the outer surface of the battery core. In this example, the cooling time is preferably 4min to take account of sufficient cooling and assembly efficiency of the cell module. In other embodiments, the cooling time may also be 3min, 5min, etc. The heating and cooling temperature and time for the cell module are determined according to the specific material and the specific thickness value of the adhesive layer.
As shown in fig. 2, in step S2, before the cell module is pressed, end plates are provided on both sides of the cell module in the thickness direction. Further included between step S2 and step S3 is step S21: extrude electric core module to predetermineeing thickness, will extrude to predetermineeing electric core module and the end plate of thickness and fix through the bandage.
In this embodiment, through using anchor clamps extrusion electric core module, the end plate of electric core module both sides can protect electric core module, avoids receiving the extrusion damage at anchor clamps extrusion in-process electric core module. The clamp for extruding the battery cell module is a conventional technical means in the field, and the structure and the working process of the clamp are not described in detail herein. When anchor clamps extrude predetermined thickness with electric core module, keep the state of anchor clamps centre gripping electric core module, use the bandage to fix electric core module and end plate simultaneously to electric core module can wholly get into the temperature box and heat and cool off. In this embodiment, the bandage is provided with two to improve the steadiness of electric core module. In other embodiments, the strap may also be provided with one, three or more than three. It should be noted that, a person skilled in the art may set the preset thickness value of the cell module according to the assembly requirement and the performance requirement of the cell module, and the specific value of the preset thickness is not specifically limited herein.
With continued reference to FIG. 2, step S3 is followed by step S4: set up the apron in the upper end of electric core module, each positive post and each negative pole post of electric core module wear out the through-hole that corresponds on the apron respectively, S5: each positive pole post of electric core module all connects in one and draws forth the piece, and each negative pole post of electric core module all connects in another and draws forth the piece.
Particularly, after the battery core module is cooled in a temperature box with the environment temperature of 25 ℃ for 3min-5min, the temperature box is removed from the battery core module, then a cover plate is installed at the upper end of the battery core module, a plurality of through holes are formed in the cover plate, corresponding through holes in the cover plate are respectively penetrated out by each positive pole column and each negative pole column at the upper end of the battery core module, so that each positive pole column of the battery core module is connected to one leading-out piece, each negative pole column of the battery core module is connected to the other leading-out piece, the outer surface contact of the leading-out pieces and the battery core module is avoided, short. In this embodiment, the lead-out sheet is an aluminum bar commonly used in lithium battery production, and the specific size of the aluminum bar needs to be determined according to the number of battery cells in the battery cell module, which is not specifically limited in this embodiment.
In order to facilitate safe transportation and use of the cell module, step S5 is followed by step S6: and the insulating protection plate is clamped on the cover plate to complete the assembly of the battery cell module. Particularly, be provided with a plurality of buckles along its extending direction interval on the apron, correspond on the insulation protection shield and be provided with a plurality of slotted holes, every buckle homoenergetic can correspond the joint in the slotted hole, has realized the firm encapsulation of insulation protection shield with the apron.
The invention further provides a battery cell module which is assembled by the battery cell module assembling method, so that the assembling cost of the battery cell module is reduced, and the assembling efficiency of the battery cell module is improved. Simultaneously, avoided the inhomogeneous condition of rubber coating, increased the bonding area between the electric core, improved the equipment quality of electric core module.
The invention particularly discloses a battery cell module which comprises a plurality of battery cells arranged side by side, wherein a glue layer is arranged between any two adjacent battery cells and used for bonding the battery cells into a whole, and the glue layer is made of hot-melt pressure-sensitive adhesive.
Example two
This example still discloses a battery cell module, and the assembly method of this battery cell module is the same with the assembly method of the battery cell module in embodiment one, and main difference between them lies in:
carry out gumming to electric core and handle, the periphery side and the bottom of electric core all form the glue film, the electric core module that the assembly method equipment of electric core module in the embodiment one formed, its bottom also has the glue film for after electric core module packs into battery case, keep insulating between the diapire of the bottom of electric core module and casing, and be favorable to antidetonation, the buffering of electric core module, improve the security of electric core module.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The assembling method of the battery cell module is characterized by comprising the following steps of:
s1: dipping the battery cell in hot-melt pressure-sensitive adhesive to form an adhesive layer at least on the side surface of the battery cell;
s2: arranging a plurality of battery cores with the glue layers side by side, wherein adjacent battery cores are abutted through the glue layers to form a battery core module;
s3: and heating and cooling the battery cell module to bond any two adjacent battery cells into a whole.
2. The method of assembling a battery cell module of claim 1, wherein the thickness of the adhesive layer of the battery cell is 0.7mm to 1 mm.
3. The method of assembling a cell module according to claim 1, wherein in step S2, end plates are provided on both sides of the cell module in the thickness direction.
4. The method for assembling the cell module of claim 3, further comprising, between the step S2 and the step S3, the step S21: extrude electric core module to predetermineeing thickness, will extrude to predetermineeing thickness electric core module and the end plate is fixed through the bandage.
5. The method for assembling the battery cell module of claim 1, wherein the heating temperature of the battery cell module is 120-125 ℃ and the heating time is 0.5-1 s.
6. The method for assembling the battery cell module of claim 1, wherein the cooling temperature of the battery cell module is 20-25 ℃ and the cooling time is 3-5 min.
7. The method for assembling the cell module of claim 1, wherein the step S3 is followed by a step S4: arranging a cover plate at the upper end of the battery cell module, wherein each positive pole column and each negative pole column of the battery cell module respectively penetrate through corresponding through holes in the cover plate;
s5: each positive pole post of electricity core module all connects in one and draws forth the piece, each negative pole post of electricity core module all connects in another and draws forth the piece.
8. The method for assembling the cell module of claim 7, wherein the step S5 is followed by a step S6: and clamping an insulating protection plate to the cover plate so as to complete the assembly of the battery cell module.
9. A battery cell module, wherein the battery cell module is assembled by the method for assembling a battery cell module according to any one of claims 1 to 8.
10. The utility model provides an electricity core module, its characterized in that, includes a plurality of electric cores that set up side by side, arbitrary adjacent two be provided with the glue film between the electric core, the glue film is used for a plurality of electricity core bonds as an organic wholely, the material of glue film is hot melt pressure sensitive adhesive.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114551968A (en) * | 2022-02-25 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Battery cell module glue fixing system and method |
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Cited By (1)
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| CN114551968A (en) * | 2022-02-25 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Battery cell module glue fixing system and method |
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Application publication date: 20200724 |