CN104319362B - Vehicle lithium ion battery integration module and integration method thereof - Google Patents
Vehicle lithium ion battery integration module and integration method thereof Download PDFInfo
- Publication number
- CN104319362B CN104319362B CN201410664738.8A CN201410664738A CN104319362B CN 104319362 B CN104319362 B CN 104319362B CN 201410664738 A CN201410664738 A CN 201410664738A CN 104319362 B CN104319362 B CN 104319362B
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- module
- cell
- heat conducting
- lithium ion
- ion battery
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/256—Carrying devices, e.g. belts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Abstract
The invention discloses a vehicle lithium ion battery integration module and an integration method thereof. Single batteries are fixed to a heat conduction frame which has a heat conduction function through the structure glue adhering technology to form a single battery module, a plurality of single battery modules are fixed through the structure glue adhering technology, the module shaping technology and the bandage bundling technology, connection between aluminum strips and battery post terminals is carried out through the laser welding technology, and lastly the wiring harness terminal connecting and inserting technology and the upper cover fixing technology are carried out. According to the vehicle lithium ion battery integration module and the integration method thereof, battery unit splicing is adopted, the post terminals are connected through aluminum strip laser welding, reliability is greatly improved, and compared with the traditional nut locking technology, weight of the whole vehicle lithium ion battery integration module is reduced by about 10 percent to 40 percent.
Description
Technical field
The present invention relates to power battery module integrated technology field, more particularly, to a kind of automobile-used lithium ion battery integration module
And its integrated approach.
Background technology
As shown in figure 1, the housing of traditional battery module is designed with housing 1 ' and upper lid 6 ' combination, cell 2 ' and
Row is arranged in housing 1 ', and each cell 2 ' has battery upper cover 5 ', is connected by nut 3 ' lock between cell 2 '
The structure of tight jumper 4 '.Due to cell 2 ' Positive Poles material for aluminum it is impossible to bear very big moment of torsion, can only achieve
The 1/10 of steel stud 3 ' locking torque, so there is, after pole nut 3 ' locking, the potential risk getting loose, and substantial amounts of nut
3 ' the weight also increasing whole module.
Content of the invention
The present invention provides a kind of automobile-used lithium ion battery integration module and its integrated approach, assembled using battery unitization,
It is connected by aluminum jumper laser welding between pole, substantially increase reliability, and reduce overall weight.
In order to achieve the above object, the present invention provides a kind of automobile-used lithium ion battery integration module, this automobile-used lithium-ion electric
Pond integration module comprises:
Some unit battery modules, these unit battery modules are arranged side by side, and adopt structure glue to bond each other, are formed
Assembled Shaping Module;
Described unit battery module comprises:
Heat conducting frame, this heat conducting frame is the frame structure that can accommodate cell, and described heat conducting frame has to be engraved
Empty base plate and the side plate connecting hollow out base plate, in the position of side wall inner surfaces and the contacts side surfaces of cell, are coated with one layer
Structure glue, has a glue groove on the surface that hollow out plate outer surface is contacted with the heat conducting frame in neighboring unit cell module,
It is coated with structure glue in this glue groove;
Cell, it is arranged in heat conducting frame, and described cell is rectangular hexahedron structure, have front,
The back side and side, the front of cell or the back side are contacted with the hollow out plate inner surface of heat conducting frame, cell with
On the surface of hollow out plate inner surface contact of heat conducting frame, it is coated with one layer of heat-conducting silicone grease;
Buffer insulation pad, it is pasted onto the front of cell or the back side, and is arranged on cell and heat conducting frame
Between, the size of this buffer insulation pad is more than the openwork part on the hollow out base plate of heat conducting frame;
Described automobile-used lithium ion battery integration module also comprises:
Some bandages, on assembled Shaping Module, this bandage adopts stainless steel for its colligation;
Some jumpers, the pole welding of two cells that each jumper is adjacent respectively, this jumper is adopted
Use aluminium material.
Described automobile-used lithium ion battery integration module also comprises:
Wire harness, the sampling terminal of its every single line is connected to the copper tip of each sampled point of assembled Shaping Module
On;
Upper lid, it is fixed on heat conducting frame.
The present invention also provides a kind of integrated approach of automobile-used lithium ion battery integration module, and this integrated approach comprises following step
Rapid:
Step 1, on cell be coated with heat-conducting silicone grease;
Step 2, heat conducting frame side wall inner surfaces applying structure glue;
Step 3, assembled unit battery module;
Step 4, in the point glue groove of the hollow out plate outer surface of the heat conducting frame of each unit battery module coating knot
Structure glue;
Step 5, by some unit battery modules assembly shaping;
Step 6, tied up using bandage and tighten up assembled Shaping Module;
Step 7, welding bandage;
Step 8, using laser welding, jumper is welded on the pole of adjacent two cell, realizes monomer electricity
Connection in series-parallel between the pole of pond connects;
Step 9, the sampling terminal using soldering fixed beam and copper tip;
Step 10, upper lid is fixedly installed on heat conducting frame.
In described step 1, it is coated with one layer of heat-conducting silicone grease, this rule in the front of cell or the predetermined region at the back side
Determine the region phase that the shaped position in region is contacted with the hollow out plate inner surface of the front of cell or the back side and heat conducting frame
Coupling, using the silicone grease insulating, the thickness of the heat-conducting silicone grease of coating is 0.1mm ~ 0.2mm to described heat-conducting silicone grease.
In described step 2, even spread structure glue in the lateral side regions of the side wall inner surfaces of heat conducting frame, this side
Region is 2 ~ 5mm with the Edge Distance of the side plate of heat conducting frame, and the width of this lateral side regions is the side plate width of heat conducting frame
15~20%.
In described step 2 and step 4, the hardening time of described structure glue is integrated more than the automobile-used lithium ion battery of whole piece
It is ensured that can not solidify before later process completes, the surface drying time of structure glue is the TPT of the integrated production line of module
20 minutes, the mobility of structure glue was more than 300pa.s simultaneously.
Described step 3 comprises the steps of
Step 3.1, by buffer insulation pad single-sided back-adhesive, paste the one side that heat-conducting silicone grease is coated with cell, absolutely
Edge cushion pad paste position corresponding with the openwork part on the hollow out base plate of heat conducting frame so that unit battery module assembly is complete
Cheng Hou, buffer insulation pad can shelter from the openwork part on hollow out base plate completely;
Step 3.2, the cell being pasted with buffer insulation pad is installed in heat conducting frame, is coated on heat conducting frame
The side of cell and heat conducting frame are bonded together by the structure glue in the lateral side regions of side wall inner surfaces, form monomer electricity
Pond module.
In described step 5, some unit battery modules are arranged on the tool pallet on shaping tooling, by screw mandrel
Hold-down mechanism, makes mutually to bond between adjacent unit battery module to middle extruding from the two ends of some unit battery modules,
Form assembled Shaping Module, the size of assembled Shaping Module is carried out 0.2% excess extruding by screw mandrel hold-down mechanism.
In described step 6, tighten up tool using steel band and some rustless steel bandages are banded on assembled Shaping Module, and
Tighten up rustless steel bandage, the tightening force that steel band tightens up tool offer is more than 2000n, by force will be assembled for bandage laminating whole by pulling force
The r angle of shape module corner, the tightening force difference between bandage controls within 10%.
Described step 8 comprises the steps of
Step 8.1, pre- solder joint is formed using laser spot welding on the pole of jumper and cell fix jumper;
Step 8.2, using optical-fiber laser weldering weld seam is welded.
The present invention adopts battery unitization assembled, is connected by aluminum jumper laser welding, substantially increases between pole
Reliability, and reduce overall weight.
Brief description
Fig. 1 is the structural representation of conventional battery modules in background technology.
Fig. 2 is heat-conducting silicone grease dispensing area schematic diagram.
Fig. 3 is heat conducting frame structure glue dispensing area schematic diagram.
Fig. 4 is heat conducting frame structure glue dispensing area schematic diagram.
Fig. 5 is battery unit combination schematic diagram.
Fig. 6 is shaping tooling schematic diagram.
Fig. 7 is module shaping schematic diagram.
Fig. 8 is steel band spot welding area schematic.
Fig. 9 is jumper laser welding track schematic diagram.
Figure 10 is connector scheme of installation.
Figure 11 is the structural representation of the automobile-used lithium ion battery integration module that the present invention provides.
Figure 12 is the temperature rise experimental diagrams having or not heat-conducting silicone grease.
Specific embodiment
Below according to Fig. 2~Figure 12, illustrate presently preferred embodiments of the present invention.
As shown in figure 11, the present invention provides a kind of automobile-used lithium ion battery integration module, comprises:
Some unit battery modules, these unit battery modules are arranged side by side, and adopt structure glue to bond each other, are formed
Assembled Shaping Module;
Described unit battery module comprises:
Heat conducting frame 3(is molded using heat-conducting plastic, and base material is polyamide pa), as shown in Figure 3 and Figure 4, this heat conduction
Framework 3 is the frame structure that can accommodate cell 1, and this heat conducting frame 3 has hollow out base plate 301 and connects hollow out base plate
301 side plate 302, in the position of side plate 302 inner surface and the contacts side surfaces of cell 1, is coated with a Rotating fields glue, is engraving
On the surface that empty base plate 301 outer surface is contacted with the heat conducting frame 3 in neighboring unit cell module, there is a glue groove 22, this dispensing
It is coated with structure glue in groove 22;
Cell 1, it is arranged in heat conducting frame 3, as shown in Fig. 2 this cell 1 is rectangular hexahedron structure,
There is front, the back side and side, the front of cell 1 or the back side are connect with hollow out base plate 301 inner surface of heat conducting frame 3
Touch, on the surface that cell 1 is contacted with hollow out base plate 301 inner surface of heat conducting frame 3, be coated with one layer of heat-conducting silicone grease;
Buffer insulation pad 5(is formed for base material cutting using Saint-Gobain k30-125), as shown in figure 5, it is pasted onto monomer electricity
The front in pond 1 or the back side, and be arranged between cell 1 and heat conducting frame 3, the size of this buffer insulation pad 5 is more than to be led
Openwork part on the hollow out base plate 301 of hot framework 3, after the effect of this buffer insulation pad 5 is to be buffered in cell 1 tympanites
Battery between space diminish, and make between cell 1 insulation;
As shown in figure 11, described automobile-used lithium ion battery integration module also comprises:
Some bandages 15, on assembled Shaping Module, this bandage 15 adopts stainless steel for its colligation;
Some jumpers 17, the pole welding of two cells 1 that each jumper 17 is adjacent respectively, this bridging
Piece 17 adopts aluminium material;
Wire harness 23, the sampling terminal 24 of its every single line is connected to the copper wiring of each sampled point of assembled Shaping Module
On terminal 21;
Upper lid 6, be fixed on heat conducting frame 3 using m4 tapping screw, for insulation protection entirely assembled Shaping Module
Battery electrode column.
The present invention also provides a kind of integrated approach of automobile-used lithium ion battery integration module, comprises the steps of
Step 1, on cell 1 be coated with heat-conducting silicone grease;
As shown in Fig. 2 being coated with one layer of heat-conducting silicone grease, this regulation in the predetermined region 2 at the front of cell 1 or the back side
The area that the shaped position in region 2 is contacted with the front of cell 1 or hollow out base plate 301 inner surface of the back side and heat conducting frame 3
Domain matches;
The thickness of the heat-conducting silicone grease of coating is 0.1mm ~ 0.2mm;
Realize the uniformity of heat-conducting silicone grease coating by silk screen printing, obtained by selecting the thickness of different silk screen web plates
Obtain the coating thickness of different heat-conducting silicone greases, different heat-conducting silicone greases are obtained by the mesh number selecting different silk screen web plates
Coating weight;
Described heat-conducting silicone grease is using the silicone grease of insulation;
Due to part manufacturing tolerance, lead to that cell 1 is imperfectible with heat conducting frame 3 to fit, cell 1
Gap and heat conducting frame 3 between is filled by air, and the thermal conductivity of air is only 0.02w/mk and is significantly smaller than leading of heat conducting frame 3
Heating rate 14w/mk, this makes integral heat sink effect reduce, and the purpose of coating heat-conducting silicone grease is exclusion air, reduces cell 1
Thermal resistance and heat conducting frame 3 between, the experimental data from Figure 12 it can be seen that temperature and time relation be linear relationship,
Linear formula is y=kx+b, and wherein, y is temperature (DEG C), and x is the time (s), and b is experiment initial temperature, and k is slope, can from figure
To find out, no heat-conducting silicone grease when slope k1=0.0059, there is slope k during heat-conducting silicone grease2=0.0039, this explanation is employing
After heat-conducting silicone grease, temperature rise is significantly slowed.Step 2, heat conducting frame 3 side plate 302 inner surface applying structure glue;
Even spread structure glue in the lateral side regions 4 of side plate 302 inner surface of heat conducting frame 3, this lateral side regions 4 with lead
The Edge Distance of the side plate 302 of hot framework 3 is 2 ~ 5mm, and the width of this lateral side regions 4 is side plate 302 width of heat conducting frame 3
15 ~ 20% it is ensured that when cell 1 loads heat conducting frame 3, structure glue can be distributed in the whole side of cell 1, reaches
To optimal adhesive effect;
Described structure glue has certain hardening time, when this hardening time have to be larger than total production of whole production line
Between, it is ensured that can not solidify before later process completes, the surface drying time of structure glue is less than 20 minutes, ties simultaneously within about 1 hour
The mobility of structure glue is more than 300pa.s, improves process operability;
Step 3, assembled unit battery module (as shown in Figure 5);
Step 3.1, by buffer insulation pad 5 single-sided back-adhesive (model 3m9495 of this gum), paste on cell 1
It is coated with the one side of heat-conducting silicone grease, the hollow-out parts on position and the hollow out base plate 301 of heat conducting frame 3 that buffer insulation pad 5 is pasted
Divide corresponding so that after the completion of unit battery module assembly, buffer insulation pad 5 can shelter from engraving on hollow out base plate 301 completely
Empty part;
Step 3.2, the cell 1 being pasted with buffer insulation pad 5 is installed in heat conducting frame 3, is coated on heat conduction frame
The side of cell 1 and heat conducting frame 3 are bonded in one by the structure glue in the lateral side regions 4 of side plate 302 inner surface of frame 3
Rise, form unit battery module;
Step 4, in the point glue groove 22 of hollow out base plate 301 outer surface of the heat conducting frame 3 of each unit battery module
Applying structure glue (as shown in Figure 4);
Substituting integral structure component using structure glue provides the xyz direction structure intensity of whole module;
Described structure glue has certain hardening time, when this hardening time have to be larger than total production of whole production line
Between, it is ensured that can not solidify before later process completes, the surface drying time of structure glue is about 20 minutes, ties simultaneously within about 1 hour
The mobility of structure glue is more than 300pa.s, improves process operability;
Step 5, by some unit battery modules assembly shaping;
As shown in fig. 6, some unit battery modules are arranged on the tool pallet 11 on shaping tooling 8, by screw mandrel
Hold-down mechanism 9, makes mutually to bond between adjacent unit battery module to middle extruding from the two ends of some unit battery modules,
Form assembled Shaping Module;
Described tool pallet 11 can ensure linearity during unit battery module shaping;
The size of assembled Shaping Module is carried out 0.2% excess extruding by screw mandrel hold-down mechanism 9, such as: in 36 monomer electricity
In the case that pond module bond becomes assembled Shaping Module, the overall length of assembled Shaping Module should be 515 ± 0.5mm, and screw mandrel compresses
After mechanism 9 carries out 0.2% excess extruding, overall length is 514 ± 0.5mm;Step 6, tied up using bandage and tighten up assembled sizing die
Block;
As shown in fig. 7, tighten up tool 10 using steel band some rustless steel bandages 15 are banded on assembled Shaping Module, and
Tighten up rustless steel bandage 15;
The tightening force that steel band tightens up tool 10 offer needs more than 2000n, by force bandage 15 is fitted assembly by pulling force
The r angle 22 of Shaping Module corner, bandage tightens up the purpose reaching constraints module y direction, the tightening force of four bandages 15 completely
Difference controls within 10% in need, could effectively prevent assembled Shaping Module from warpage occurring;
Step 7, welding bandage;
As shown in figure 8, in the present embodiment, carrying out laser using the 80w laser-beam welding machine bandage 15 wide to 0.5mm thickness 10mm
Spot welding, is welded at 4 welding positions 14, and this welding position 14 is 2 ~ 3mm with the spacing at bandage 15 edge, with focal length
One group of totally 15 points are welded away from 0.5mm, spot diameter 0.5mm for 225.5mm, point, form a welding track, not with always
The spacing between adjacent two welding tracks on line is 2 ~ 3mm, between two being located on the same line welding track
Spacing is 5 ~ 10mm;
Gapless between welding portion bandage 15 need to be ensured during welding, after welding, carry out tensile test, weld strength reaches
More than 4000n 403 stainless steel band material yield strength;
Step 8, laser welding jumper;
Using laser welding, jumper 17 is welded on the pole 16 of adjacent two cell 1, realizes monomer electricity
Connection in series-parallel between the pole 16 of pond 1 connects;
Step 8.1, the fixing bridging of prewelding point is formed using laser spot welding on the pole 16 of jumper 17 and cell 1
Piece 17, prevents welding from shrinking the weld seam 19 causing and becomes big;
As shown in figure 9, using ipg2000 laser welder, power 1500w, aluminum 3003 jumper 17 and pole 16 are carried out
Spot welding is fixed, and has the pre- solder joint of 8 pre- solder joint 18(at least will reach 6), pre- solder joint answers both sides symmetrical, prevents from making because of welding contraction
The monolateral weld seam becoming is excessive (when weld seam is more than 0.4, having more than 50% probability to occur bad);
Step 8.2, using optical-fiber laser weldering weld seam 19 is welded, need inert gas shielding, and returned using waste gas
Receiving apparatus reclaim welding waste gas.
Using power 1400 ~ 1800w, bifocuses, the laser welder of speed 80mm/s, continuously gone out photocoagulation, due to
The welding track 20 that solder joint 18 is formed is polygon, and on the corner welding track can not be welded fully according to weld shape,
Will result in energy stacking, therefore continuously being gone out the welding track 19 after photocoagulation needs to be smoothed, and welding process needs
Inert gas shielding to be carried out, and reclaim welding garbage using air exhausting device;
Step 9, the sampling terminal 24 using soldering fixed beam 23 and copper tip 21;
As shown in Figure 10, the sampling terminal 24 of wire harness 23 is inserted on the copper tip 21 of each sampled point, using stannum
The sampling terminal 24 of weldering fixed beam 23 and copper tip 21, prevent from getting loose, complete the connection of wire harness.
Step 10, upper lid 6 is passed through the screw holes 26 of tapping screw and heat conducting frame 3, be arranged on heat conducting frame 3.
The present invention adopts battery unitization assembled, is connected by aluminum jumper laser welding, substantially increases between pole
Reliability, and reduce overall weight.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
Multiple modifications and substitutions all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of automobile-used lithium ion battery integration module is it is characterised in that this automobile-used lithium ion battery integration module comprises:
Some unit battery modules, these unit battery modules are arranged side by side, and adopt structure glue to bond each other, are formed assembled
Shaping Module;
Described unit battery module comprises:
Heat conducting frame (3), this heat conducting frame (3) is the frame structure that can accommodate cell (1), described heat conducting frame
(3) side plate (302) having hollow out base plate (301) and connecting hollow out base plate (301), in side plate (302) inner surface and monomer electricity
The position of the contacts side surfaces in pond (1), is coated with a Rotating fields glue, in hollow out base plate (301) outer surface and neighboring unit cell mould
A glue groove (22) is had on the surface that the heat conducting frame (3) in block contacts, this glue groove is coated with structure glue in (22);
Cell (1), it is arranged in heat conducting frame (3), and described cell (1) is rectangular hexahedron structure, has
Front, the back side and side, the front of cell (1) or the back side are connect with hollow out base plate (301) inner surface of heat conducting frame (3)
Touch, on the surface that cell (1) is contacted with hollow out base plate (301) inner surface of heat conducting frame (3), be coated with one layer of heat conduction
Silicone grease;
Buffer insulation pad (5), it is pasted onto the front of cell (1) or the back side, and is arranged on cell (1) and heat conduction
Between framework (3), the size of this buffer insulation pad (5) is more than the openwork part on the hollow out base plate (301) of heat conducting frame (3);
Described automobile-used lithium ion battery integration module also comprises:
Some bandages (15), on assembled Shaping Module, this bandage (15) adopts stainless steel for its colligation;
Some jumpers (17), pole (16) welding of two cells (1) that each jumper (17) is adjacent respectively,
This jumper (17) adopts aluminium material.
2. as claimed in claim 1 automobile-used lithium ion battery integration module it is characterised in that described automobile-used lithium ion battery
Integration module also comprises:
Wire harness (23), the sampling terminal (24) of its every single line is connected to the copper wiring of each sampled point of assembled Shaping Module
On terminal (21);
Upper lid (6), it is fixed on heat conducting frame (3).
3. a kind of integrated approach as any one of automobile-used lithium ion battery integration module in claim 1-2, it is special
Levy and be, this integrated approach comprises the steps of
Step 1, it is coated with heat-conducting silicone grease cell (1) is upper;
Step 2, side plate (302) the inner surface applying structure glue in heat conducting frame (3);
Step 3, assembled unit battery module;
Step 4, each unit battery module heat conducting frame (3) hollow out base plate (301) outer surface point glue groove (22)
Interior applying structure glue;
Step 5, by some unit battery modules assembly shaping;
Step 6, tied up using bandage and tighten up assembled Shaping Module;
Step 7, welding bandage;
Step 8, using laser welding, jumper (17) is welded on the pole (16) of adjacent two cell (1), real
Connection in series-parallel between existing cell (1) pole (16) connects;
Step 9, the sampling terminal (24) using soldering fixed beam and copper tip (21);
Step 10, upper lid (6) is fixedly installed on heat conducting frame (3).
4. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
In 1, in the predetermined region (2) at the front of cell (1) or the back side, it is coated with one layer of heat-conducting silicone grease, this predetermined region (2)
The region that shaped position is contacted with the front of cell (1) or hollow out base plate (301) inner surface of the back side and heat conducting frame (3)
Match, using the silicone grease insulating, the thickness of the heat-conducting silicone grease of coating is 0.1mm ~ 0.2mm to described heat-conducting silicone grease.
5. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
In 2, even spread structure glue in the lateral side regions (4) of side plate (302) inner surface of heat conducting frame (3), this lateral side regions (4)
Edge Distance with the side plate (302) of heat conducting frame (3) is 2 ~ 5mm, and the width of this lateral side regions (4) is heat conducting frame (3)
The 15 ~ 20% of side plate (302) width.
6. the automobile-used lithium ion battery integration module as described in claim 3 or 5 integrated approach it is characterised in that as described in
In step 2 and step 4, it is more than the integrated production of whole piece automobile-used lithium ion battery integration module the hardening time of described structure glue
It is ensured that can not solidify before later process completes, the surface drying time of structure glue is 20 minutes to the TPT of line, structure simultaneously
The mobility of glue is more than 300pa.s.
7. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
3 comprise the steps of
Step 3.1, by buffer insulation pad (5) single-sided back-adhesive, paste the one side that heat-conducting silicone grease is coated with cell (1),
The position that buffer insulation pad (5) is pasted corresponding with the openwork part on the hollow out base plate (301) of heat conducting frame (3) so that monomer
After the completion of battery module assembly, buffer insulation pad (5) can shelter from the openwork part on hollow out base plate (301) completely;
Step 3.2, the cell (1) being pasted with buffer insulation pad (5) is installed in heat conducting frame (3), is coated on heat conduction
Structure glue in the lateral side regions (4) of side plate (302) inner surface of framework (3) is by the side of cell (1) and heat conducting frame
(3) it is bonded together, form unit battery module.
8. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
In 5, some unit battery modules are arranged on the tool pallet (11) on shaping tooling (8), by screw mandrel hold-down mechanism (9)
From the two ends of some unit battery modules to middle extruding, make mutually to bond between adjacent unit battery module, formed assembled
Shaping Module, the size of assembled Shaping Module is carried out 0.2% excess extruding by screw mandrel hold-down mechanism (9).
9. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
In 6, tighten up tool (10) using steel band and some rustless steel bandages (15) are banded on assembled Shaping Module, and tighten up rustless steel
Bandage (15), the tightening force that steel band is tightened up tool (10) and provided is more than 2000n, by force bandage (15) is fitted by pulling force assembled
The r angle of Shaping Module corner, the tightening force difference between bandage (15) controls within 10%.
10. as claimed in claim 3 the integrated approach of automobile-used lithium ion battery integration module it is characterised in that described step
Rapid 8 comprise the steps of
Step 8.1, upper form pre- solder joint and fix in the pole (16) of jumper (17) and cell (1) using laser spot welding
Jumper (17);
Step 8.2, using optical-fiber laser weldering weld seam (19) is welded.
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CN106711363A (en) * | 2015-07-22 | 2017-05-24 | 北京普莱德新能源电池科技有限公司 | Battery grouping framework |
JP6753045B2 (en) * | 2015-09-18 | 2020-09-09 | 株式会社Gsユアサ | Power storage device |
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