CN102306717B - Lithium ion power battery pack for electric automobile and manufacturing method of lithium ion power battery pack - Google Patents
Lithium ion power battery pack for electric automobile and manufacturing method of lithium ion power battery pack Download PDFInfo
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- CN102306717B CN102306717B CN201110238323.0A CN201110238323A CN102306717B CN 102306717 B CN102306717 B CN 102306717B CN 201110238323 A CN201110238323 A CN 201110238323A CN 102306717 B CN102306717 B CN 102306717B
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011449 brick Substances 0.000 claims description 95
- 230000004888 barrier function Effects 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- 238000012545 processing Methods 0.000 claims description 15
- 229910000906 Bronze Inorganic materials 0.000 claims description 13
- 239000010974 bronze Substances 0.000 claims description 13
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 230000004087 circulation Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims 2
- 238000007781 pre-processing Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004079 fireproofing Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a lithium ion power battery pack for an electric automobile and a manufacturing method of the lithium ion power battery pack. The lithium ion power battery pack for the electric automobile comprises a battery pack shell and a battery pack cover matched with the battery pack shell, wherein battery modules are arranged inside the battery pack shell; an insulating layer I is arranged between the battery modules and the battery pack cover; an insulating layer II is arranged between a battery pack shell surface opposite to the battery pack cover and the battery modules; quick connectors connected with the battery modules are arranged on the battery pack shell; and the adjacent battery modules inside the battery pack shell are clamped with each other. The manufacturing method of the lithium ion power battery pack for the electric automobile comprises the following steps of: (1) providing a single battery, and preprocessing; (2) making a plurality of single batteries connected in parallel with one another to form the battery modules; (3) making a plurality of battery modules connected in series with one another to form the battery pack; and (4) performing terminal treatment on the battery pack. By the manufacturing method, charging uniformity, high safety and long service life of the lithium ion power battery pack can be ensured.
Description
Technical field
The present invention relates to lithium ion battery field, be specifically related to a kind of lithium ion battery bag used for electric vehicle and preparation method thereof.
Background technology
Electric automobile, as a kind of new-energy automobile, will lead the automobile developing direction in future.Have the advantages such as volume is little, lightweight, environmentally safe due to lithium ion battery, the power brick being made up of lithium ion battery is widely used in electric automobile power battery.For Prospect of EVS Powered with Batteries, electrokinetic cell will possess high-energy-density, high-specific-power, long-life, high security four aspect requirements, is also so to the requirement of power brick, could meet like this demand of contemporary consumer to power vehicle.For electric automobile, consider its course continuation mileage and travel speed, need high power capacity, the high-tension power brick power supply as drive motors.The charge balancing of battery for electric automobile bag, safety in utilization, useful life etc. directly affects the power performance of electric automobile.Due to power brick conventionally by tens even a hundreds of cell each other connection in series-parallel connect and form, be that electric powered motor is considered, power brick should meet high security and high requirement in useful life; So just require the heat producing in each cell use procedure in power brick to distribute as early as possible, there is corresponding cooling structure; In use position is firm to require again battery, and power brick should possess the fastening structure of stable cell piece.Existing fixed structure adopts concave-convex clutch structure, and this power brick is in electric automobile during traveling process, and its occlusion structure is easy to loosening even fracture, is difficult to avoid battery or the change of battery module position in power brick, causes connection in series-parallel to connect loosening; Battery or battery module shift in position may cause heat dissipation wind channel to block simultaneously, can bring so very large potential safety hazard, and the management system of battery pack are unsound, cause the performance of battery pack effectively not bring into play.
Application number is 200920262439.6, the utility model patent that name is called " lithium ion battery bag used for electric vehicle " discloses a kind of structure for the lithium ion battery bag on battery car, battery block in this patent in power brick is set to the longitudinal axis perpendicular to electric automobile, and then battery block can not move up and down and collide with casing along central axis because jolting, thereby extend the useful life of lithium ion battery, improved the security performance of lithium ion battery bag.But this lithium ion battery pack arrangement has following problem: first, this kind of technology is only applicable to the battery pack structure of a small amount of battery block composition; Secondly, the fastening effect of battery block is undesirable, does not reach automobile installation requirement to battery block under bad working environments, can not meet vehicle safety requirement; Again secondly, can not reach very good effect by leaving gap heat radiation between battery block; Finally, in power brick, there is no the management system of cell safety protection, can not, to the stable Real-Time Monitoring that waits of inside battery, can not ensure battery charge balancing, can not ensure that power brick has high useful life and security performance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, lithium ion power battery used for electromobile bag of a kind of charge balancing, safe, long service life and preparation method thereof is provided.
To achieve these goals, the technical solution used in the present invention is:
Described lithium ion power battery used for electromobile bag, comprises power brick housing and the battery clad with power brick housing adaptation, is provided with battery module in described power brick enclosure interior; Between described battery module and described battery clad, be provided with insulating barrier I, and be provided with insulating barrier II between the just right power brick housing face of battery clad and battery module; Described power brick housing is provided with the fast connector being connected with battery module, is positioned at the mutual clamping of battery module that power brick enclosure interior is adjacent.
Described battery module, comprises battery module housing, is provided with corresponding dovetail groove and projection cube structure in power brick housing on adjacent battery modules housing, and adjacent battery modules coordinates the mode clamping of projection by dovetail groove.
Between described insulating barrier I and described battery clad, be provided with the module press strip for compressing described battery module.
Described battery module, except comprising battery module housing, also comprise and module upper cover and the module lower cover of battery module housing adaptation, be provided with battery cell in described battery module enclosure interior, under module, cover the dividing plate being provided with for battery cell is installed, battery cell is installed between adjacent dividing plate.
In described module, cover and be provided with positive stop strip, described positive stop strip is stuck between adjacent battery cell.
Output at described battery module connects BMS management system and equalizer.
Described power brick housing and described battery clad are welded by stainless-steel sheet; Described insulating barrier I and insulating barrier II are made up of polypropylene insulation material.
Described battery cell is carried out parallel connection or is connected into battery module by metal preferably copper current collecting tier.
Between module upper cover and battery cell, be provided with and be connected bronze medal, battery cell pole connects by connecting bronze medal; Battery module adopts each other and connects the connection of soft copper board.
The manufacture method of described lithium ion power battery used for electromobile bag, comprises the following steps;
(1) provide battery cell and carry out preliminary treatment;
(2) several battery cell composition battery module in parallel;
(3) several group of battery modules of connecting become power brick;
(4) power brick is finally processed;
Be specially:
First, make each parts, choose the battery cell that is provided with explosion-proof valve demolition set, lithium-ion battery monomer is carried out to vibration processing, then shelve at normal temperatures processing in 15 days, then by measuring internal resistance, voltage, the weight of each battery and investigating battery voltage drop and select qualified prewired Battery pack monomer; Qualified prewired Battery pack monomer is carried out to 1C and discharge and recharge three circulations, by test data, the parts that use is good, carry out combo to battery cell, after combo completes and be unified into required battery module;
Secondly battery module is carried out to 1C discharges and recharges two circulations, pick out qualified battery module combination charging according to test data, then shelve the 24h time, the parts that use is good, carry out combo by qualified battery module and are connected into required high-voltage battery bag;
Power brick is carried out to waterproof, dustproof, anti-short circuit processing, power brick surrounding arranges reinforces insulating epoxy plate, fastening for insulating; Power brick output adopts protection type rubber parts; The output of power brick connects high voltage protective system.
Beneficial effect of the present invention is:
Described lithium ion power battery used for electromobile bag and preparation method thereof, first, adopt battery cell to put into battery module fixing, battery module combines fixing by oat tail groove structure, then by module layering structure, all battery modules are further fastened in power brick; On the one hand battery cell, battery module stationarity are good, on the other hand between battery cell, between battery module, multiple heat dissipation channels can be formed, and need between module, not set up separately vent passages, save power brick space and production cost, and be conducive to the heat radiation of battery; Under module, cover and be provided with dividing plate, cover and be provided with positive stop strip in module, battery module housing is provided with oat tail groove structure; Between dovetail groove and projection, without relative displacement, battery cell, battery module can plaies; Described lithium-ion-power cell bag not only internal structure is stable, safe, and internal heat dissipating is good, long service life;
Secondly, increased the combo scheme that cell and battery module are new, battery module connection adopts the mode that is flexible coupling, and does not contact thermal source, can not damage like this power brick;
Again, each battery module has increased BMS system and balanced management device, and battery pack has increased ADS (high voltage control) management system; The equilibrium of lithium-ion-power cell bag charge inside, further battery security and useful life;
Finally, described lithium ion power battery used for electromobile pack arrangement is reasonable, simple for assembly process, power brick is safe and reliable, and cost is not high, can be applicable to the mode of many battery cell assemblings simultaneously.
Brief description of the drawings
Mark in content and the figure below each width accompanying drawing of specification of the present invention being expressed is briefly described:
Fig. 1 is lithium ion power battery used for electromobile pack arrangement schematic diagram of the present invention;
Fig. 2 is the explosive view of lithium ion power battery used for electromobile bag in Fig. 1;
Fig. 3 is the explosive view of battery module in Fig. 2 lithium ion power battery used for electromobile bag;
Fig. 4 is the battery module housing vertical view of battery module in Fig. 3;
Fig. 5 is the module upper cover front view of battery module in Fig. 3;
Fig. 6 is fast connector structure schematic diagram in lithium ion power battery used for electromobile bag of the present invention;
Fig. 7 is the connection bronze medal structural representation on battery module in lithium ion power battery used for electromobile bag of the present invention;
Fig. 8 is the connection soft copper board structural representation on battery module in lithium ion power battery used for electromobile bag of the present invention;
Fig. 9 is the collection line hole covering in the module of battery module in Fig. 3 and gathers line slot enlarged drawing;
Mark in above-mentioned figure is:
1, power brick housing, 2, battery clad, 3, battery module, 4, insulating barrier I, 5, insulating barrier II, 6, fast connector, 7, module press strip, 31, battery module housing, 32, module upper cover, 33, module lower cover, 34, battery cell, 35, dividing plate, 36, lower cover louvre, 37, connect bronze medal, 38, upper cover louvre, 311, projection, 312, dovetail groove, 321, positive stop strip.
Embodiment
Contrast accompanying drawing below, by the description to optimum embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figures 1 to 6, described lithium ion power battery used for electromobile bag, comprises power brick housing 1 and the battery clad 2 with power brick housing 1 adaptation, is provided with battery module 3 in power brick housing 1 inside; Between battery module 3 and battery clad 2, be provided with insulating barrier I 4, and be provided with insulating barrier II 5 between just right 1 of the power brick housing of battery clad 2 and battery module 3; Power brick housing 1 is provided with the fast connector 6 being connected with battery module 3, is positioned at the mutual clamping of battery module 3 that power brick housing 1 is inner adjacent.
Described lithium ion power battery used for electromobile bag, be positioned at the mutual clamping of adjacent battery modules 3 of power brick housing 1 inside, battery module 3 can be stable be installed on power brick housing 1 inside, ensure that to greatest extent battery module 3 can not relatively move, and can ensure the safety in utilization of power brick.
For further ensureing the installation stability of battery module 3 in power brick housing 1 inside, described lithium ion power battery used for electromobile bag is provided with the module press strip 7 for compressing battery module 3 between insulating barrier I 4 and battery clad 2.Under the pressuring action of module press strip 7, battery module 3 can be more stable be loaded on power brick housing 1 inside, further ensureing between adjacent battery modules 3 after assembling not can change, has avoided battery module 3 in power brick, to fix potential safety hazard unstable and that bring.
Insulating barrier I 4 and insulating barrier II 5, select polypropylene insulation material, makes sheet material, and this kind of material has the advantages such as high fire-protection rating, high withstand voltage, high stability, long-life.
Module press strip 7 by square steel two sides punching, tapping after, insulation processing is carried out on surface, finally with heat-shrink tube by its pyrocondensation, its use time, allow its being pressed on insulating barrier I 4 tightly, be finally locked on power brick housing 1 by the pad, spring washer and the battery module 3 that match with bolt.
Ensure that power brick possesses safe, long service life, form the battery of battery module 3 and need stablize and be installed on battery module housing 31 inside, the heat radiation between battery and battery should be good simultaneously.Described battery module 3, except comprising battery module housing 31, also comprise module upper cover 32 and module lower cover 33 with battery module housing 31 adaptations, be provided with battery cell 34 in described battery module housing 1 inside, on module lower cover 33, be provided with the dividing plate 35 for battery cell 34 is installed, battery cell 34 is installed on 35, adjacent dividing plate, battery cell 34 not only can be stablized and is installed on battery module housing 1 inside, adjacent battery cell 34 forms radiator structure simultaneously, is convenient to the cooling of battery cell 34; The quantity of dividing plate 35 and the large I of dividing plate 35 are determined according to interior battery cell 34 quantity of battery module 3 and overall dimensions.
Simultaneously, at battery module housing 31 outside walls with dovetail groove 312 or projection 311, dovetail groove 312 on the interior adjacent battery module 3 of power brick housing 1 coordinates with projection 311 like this, and battery module 3 stable connection each other, avoids battery module 3 play in power brick on the one hand; Between adjacent battery module 3, form radiator structure on the other hand, be convenient to the heat radiation of battery module 3.By actual heat radiation requirement, battery module housing 31 arranged outside part louvre and positive and negative electrode fairleads.
For further guarantee battery cell 34, stability is installed, is provided with positive stop strip 321 on module upper cover 32, positive stop strip 321 is located between adjacent battery cell 34; When assembled battery module 3, first battery cell 34 is put into 31 li of battery module housings, under dividing plate 35 effects, battery cell 34 is fastening; Under the effect of the positive stop strip 321 on module upper cover 32, battery cell 34 opposite sides are subject to pressuring action, and battery cell 34 is further fastening, can effectively avoid battery cell 34 plaies; By line requirement, battery positive and negative electrode is coupled together; With module upper cover 32 on be provided with upper cover louvre 38, on module lower cover 33, be provided with lower cover louvre 36.
Module upper cover 32, module lower cover 33, battery module housing 31, can design through hole according to actual needs, and fan is installed carries out air cooling, is conducive to the heat radiation of battery.
Output at each battery module 3 connects BMS management system and equalizer, can prevent that electric current is excessive, prevent from overcharging, prevent overdischarge and prevent excess Temperature, and the charge balancing of more effective guarantee power brick and stable, improves battery.
The manufacture method of described lithium ion battery bag, comprises the following steps;
(1) make each parts, battery cell is provided and carries out preliminary treatment;
(2) several battery cell composition battery module in parallel;
(3) several group of battery modules of connecting become power brick;
(4) power brick is finally processed;
Be specially:
First, make each parts, choose the battery cell that is provided with explosion-proof valve demolition set, lithium-ion battery monomer is carried out to vibration processing, then shelve at normal temperatures processing in 15 days, and by measuring the internal resistance of each battery, voltage, weight is also investigated battery voltage drop and is selected qualified prewired Battery pack monomer, and qualified prewired Battery pack monomer is carried out to 1C discharge and recharge (with the electric current that is doubled in battery rated capacity, battery being completed to charging and discharging) three circulations, pass through test data, the parts that use is good, battery cell is carried out to combo, after combo completes and be unified into required battery module,
Secondly battery cell module is carried out to 1C discharges and recharges two circulations, pick out qualified battery module combination charging according to test data, then shelve the 24h time, the parts that use is good, carry out combo by qualified battery module and are connected into required high-voltage battery bag;
Power brick is carried out to waterproof, dustproof, anti-short circuit processing, power brick surrounding is reinforced insulating epoxy plate, for insulation, and plays fastening effect, and power brick output adopts protection type rubber parts, so can be because not shelving for a long time the destruction of causing battery; The output of power brick is connected with ADS system (high voltage protective system), ensures the safety of battery pack.
Battery module combination process all adopts copper mesh to be flexible coupling, and does not contact thermal source, can not damage like this battery.
Be connected with BMS management system and equalizer at the output of each battery module, to the voltage of each battery, temperature, current status, state-of-charge detects, in the time that certain battery cell module has problem, just have the instruction of reporting to the police, remind operating personnel, it can prevent that electric current is excessive, prevent from overcharging, prevent overdischarge and prevent excess Temperature, the equilibrium of more effective guarantee battery pack and stable, improves battery.
The making assembling of described lithium ion battery bag, specific operation process is as follows:
First, by power brick the size of requirement operating current select the model of fast connector 6; Weld out power brick housing 1 with the stainless-steel sheet of selected thickness, and carry out insulation processing at power brick housing 1 surfaces externally and internally;
Select the polypropylene insulation plate of suitable thickness, according to power brick housing 1 inner bottom surface size, determine insulating barrier I 4 and insulating barrier II 5; Select the square steel of suitable dimension, after the punching of square steel two sides, tapping, insulation processing is carried out on surface, finally with heat-shrink tube by its pyrocondensation, complete the making of module press strip 7;
Select stainless-steel sheet or the plastics of suitable thickness to make power brick upper cover 2; Select high temperature resistant obdurability fire proofing, inject and there is the module upper cover 32 that gathers line hole, upper cover louvre 38 and gather line slot, inject the module lower cover 33 with dividing plate 35 and lower cover louvre 36;
After the battery combo of producing, because battery body 34 shells are metal-back, need carry out insulation processing at battery body 34 top cover upper surfaces and drain pan lower surface, finally use heat shrinkage film at battery thermal shrinkage on battery body 34 surfaces, also will be ready to pad, spring washer and the nut supporting with battery cell 34 poles simultaneously;
By power brick the size of requirement operating current select fine copper or the copper alloy bar of suitable width and thickness, go out to connect bronze medal 37 (as shown in Figure 8) according to designing requirement machining, then will connect whole pyrocondensation of bronze medal 37 (as shown in Figure 8) with thermal shrinkable sleeve, finally remove heat-shrink tube redundance;
By power brick the size of requirement operating current select suitable copper mesh line, with fine copper or copper alloy plate by tight copper mesh line pressure, with spot welding machine, its two parts are welded together again, produce and connect after soft copper board (as shown in Figure 7), to connect whole pyrocondensation of soft copper board with thermal shrinkable sleeve, finally remove heat-shrink tube redundance; Select the strap of suitable thickness and width according to actual conditions;
First assembled battery module 3, first put into module lower cover 33 by battery cell 34; Due to the fit-up gap of design, battery cell 34 is stuck in 35, the dividing plate of module lower cover 33;
To connect bronze medal 37 (as shown in Figure 8) is enclosed within on the pole of battery cell 34, to be enclosed within on pole by the voltage acquisition line or the temperature acquisition line that gather line hole again, then the connection soft copper board (as shown in Figure 7) of 3 of battery modules is enclosed within on pole;
On battery cell 34 poles, put pad, spring washer successively, finally use nut screwing clamping, buckle module upper cover 32, make the positive stop strip 321 in module upper cover 32 be pressed in 34 of adjacent battery cells, the wall energy on module upper cover 32 4 limits is stuck in battery cell 34 on module upper cover 32, and module upper cover 32 and battery cell 34 can not be relatively moved;
Collection line is put into and gathered line slot, re-use thermosol gelgun collection line is fixed on and is gathered in line slot; On battery module 3, stamp strap; Strap is put into the groove on module upper cover 32 and module lower cover 33, finally uses pneumatic packaging machine again,, on battery module 3, successively battery module 3 is packed urgent strap, finally the whole Battery pack module 3 of putting into power brick housing 1 is packed;
Assembled battery bag, sticks on insulating barrier II 5 in power brick housing 1 inner bottom surface, then whole Battery pack module 3 is put into power brick housing 1, and some soft rubber sheets are filled at four sides, and battery module 3 and power brick housing 1 inwall are tightly packed together;
Insulating barrier I 4 is sticked on above whole Battery pack module 3, then the gap place between insulating barrier I 4 and power brick housing 1 is carried out to sealing; Module press strip 7 is fixed by bolts on power brick housing 1, and module press strip 7 is tightly pressed on insulating barrier I 4, as can not be tightly pushed down, should be at some soft rubber sheets on module press strip 7 and insulating barrier I 4; Finally battery clad 2 is arranged on power brick housing 1 by forms such as bolts.
Above the present invention is exemplarily described; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (5)
1. a lithium ion power battery used for electromobile bag, comprises power brick housing (1) and the battery clad (2) adaptive with power brick housing (1), is provided with battery module (3) in described power brick housing (1) inside; Between described battery module (3) and described battery clad (2), be provided with insulating barrier I (4), and be provided with insulating barrier II (5) between just right power brick housing (1) face of battery clad (2) and battery module (3); Described power brick housing (1) is provided with the fast connector (6) being connected with battery module (3), it is characterized in that: be positioned at battery module (3) clamping mutually that power brick housing (1) is inner adjacent;
Between described insulating barrier I (4) and described battery clad (2), be provided with the module press strip (7) for compressing described battery module (3); Module press strip (7) by square steel two sides punching, tapping after, insulation processing is carried out on surface, with heat-shrink tube by its pyrocondensation;
Described insulating barrier I (4) sticks on whole Battery pack module (3) above, and then the gap place between described insulating barrier I (4) and described power brick housing 1 carries out sealing; Again described module press strip (7) is fixed by bolts on described power brick housing (1), and described module press strip (7) is tightly pressed in described insulating barrier I (4), as can not be tightly pushed down, in described module press strip (7) and described insulating barrier I (4), add soft rubber sheet; Finally described battery clad (2) is arranged on power brick housing (1) by bolt;
Described battery module (3), except comprising battery module housing (31), also comprise module upper cover (32) and the module lower cover (33) adaptive with battery module housing (31), be provided with battery cell (34) in described battery module housing (1) inside, on module lower cover (33), be provided with the dividing plate (35) for battery cell (34) are installed, battery cell (34) is installed between adjacent dividing plate (35);
On described module upper cover (32), be provided with positive stop strip (321), described positive stop strip (321) is stuck between adjacent battery cell (34);
Output at described battery module (3) connects BMS management system and equalizer;
Between module upper cover (32) and battery cell (34), be provided with and be connected bronze medal (37), battery cell (34) pole connects by connecting bronze medal (37); Battery module (3) adopts each other and connects the connection of soft copper board.
2. according to lithium ion power battery used for electromobile bag claimed in claim 1, it is characterized in that: described battery module (3), comprise battery module housing (31), in power brick housing (1), on adjacent battery modules housing (31), be provided with corresponding dovetail groove (312) and projection (311) structure, adjacent battery modules (3) coordinates the mode clamping of projection (311) by dovetail groove (312).
3. according to lithium ion power battery used for electromobile bag claimed in claim 2, it is characterized in that: described power brick housing (1) and described battery clad (2) are welded by stainless-steel sheet; Described insulating barrier I (4) and insulating barrier II (5) are made up of polypropylene insulation material.
4. according to lithium ion power battery used for electromobile bag claimed in claim 3, it is characterized in that: described battery cell (34) is carried out parallel connection or is connected into battery module (3) by copper current collecting tier.
5. according to a manufacture method for the lithium ion power battery used for electromobile bag described in claim 1 to 4 any one, it is characterized in that: comprise the following steps;
(1) make parts, battery cell is provided and carries out preliminary treatment;
(2) several battery cell composition battery module in parallel;
(3) several group of battery modules of connecting become power brick;
(4) power brick is finally processed;
Be specially:
First, make parts, choose the battery cell that is provided with explosion-proof valve demolition set, lithium-ion battery monomer is carried out to vibration processing, then shelve at normal temperatures processing in 15 days, then by measuring internal resistance, voltage, the weight of each battery and investigating battery voltage drop and select qualified prewired Battery pack monomer; Qualified prewired Battery pack monomer is carried out to 1C and discharge and recharge three circulations, by test data, the parts that use is good, carry out combo to battery cell, after combo completes and be unified into required battery module;
Secondly battery module is carried out to 1C discharges and recharges two circulations, pick out qualified battery module combination charging according to test data, then shelve the 24h time, the parts that use is good, carry out combo by qualified battery module and are connected into required high-voltage battery bag;
Power brick is carried out to waterproof, dustproof, anti-short circuit processing, power brick surrounding arranges reinforces insulating epoxy plate, fastening for insulating; Power brick output adopts protection type rubber parts; The output of power brick connects high voltage protective system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP6297541B2 (en) * | 2012-05-21 | 2018-03-20 | エー１２３ システムズ， リミテッド ライアビリティ カンパニー | Multi-cell lithium-ion battery |
| CN102709613B (en) * | 2012-06-27 | 2014-08-20 | 深圳先进储能材料国家工程研究中心有限公司 | Serioparallel battery pack |
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| CN104466054B (en) * | 2014-11-13 | 2017-01-25 | 深圳鸿源博得新能源技术发展有限公司 | Lithium-ion battery pack for electric automobile |
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