CN201975466U - Integral pressed stacked battery module - Google Patents
Integral pressed stacked battery module Download PDFInfo
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- CN201975466U CN201975466U CN2010206579299U CN201020657929U CN201975466U CN 201975466 U CN201975466 U CN 201975466U CN 2010206579299 U CN2010206579299 U CN 2010206579299U CN 201020657929 U CN201020657929 U CN 201020657929U CN 201975466 U CN201975466 U CN 201975466U
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- lug
- battery module
- briquetting
- coldplate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
An integral pressed stacked battery module comprises single batteries, cooling plates, electrode lug compression blocks, elastic electrode lug compression blocks, end plates and U-shaped metal connecting plates. The single batteries and the cooling plates are stacked alternately; the end plates, which are arranged at two ends of the alternately stacked single batteries and cooling plates, are connected through compression bolts and nuts; the U-shaped metal connecting plates are installed at one end of each electrode lug compression block; an electrode lug compression block or an elastic electrode lug compression block is installed between electrodes of two adjacent single batteries; and the electrode lugs of every two adjacent single batteries are clamped in U-shaped grooves of the U-shaped metal connecting plates. On the basis of the most advanced module technology, the utility model puts forward a new integrated structure of single batteries, aiming to provide a battery module with better volume energy density and weight energy density, higher cost performance, convenient integrated maintenance, safety and long service life, and therefore, the integral pressed stacked battery module is suitable for industrial large-scale application.
Description
Technical field
The utility model relates to power battery module, is meant that especially a kind of one compresses the superposing type battery module; Belong to the modular integrated technical field of power battery of electric vehicle.
Technical background
The electrokinetic cell of electric motor car is to be formed by a plurality of battery cell series connection or connection in series-parallel, for the ease of layout, I﹠ M, common technical scheme is earlier partial monosomy to be formed the group of a relative standardization, be called module, the actual conditions according to vehicle become the battery case assembly to module combinations again.Modularization can make product switch easily in same or similar product group, and the complexity of simplified system reduces battery kind and cost.The battery of current electric motor car faces that fail safe is bad, the life-span is short, cost is than problems such as height, and these problems parts can solve from improving the monomer aspect of performance, and part must solve from module and integrated aspect, so there is the number of modules scheme to be proposed in succession.
Patent CN201387911 proposes to twine the insulation film of good heat conductivity on battery cell, make that all monomers all are in than consistent temperature in the module, thereby improve fail safe.This method can make temperature even, but the film that insulate has hindered the conduction of heat, and therefore battery may be operated in too high temperature and damage.
CN201408805Y has proposed a kind of self-contained battery monomer methods,, has simplified structure, and has simplified assembling procedure battery in place by upper and lower covers and baffle plate.But the thermal diffusivity of this structure may be not fine.
CN101401227A proposes a kind of lug syndeton of flexible-packed battery, and lug is arranged in the place, plane that module connects, the connection of lug when being beneficial to a plurality of module combinations.
Above-mentioned three representational battery module patents have proposed scheme preferably in many aspects, but all have common problem: ignored the firm clamping of battery cell pole piece, this plays an important role for the performance that promotes battery and module; The installation of battery management system or circuit board be connected, be not placed in the battery module and unifiedly consider that this can influence the overall performance of battery module.
U.S. Pat 07531270, battery pack with intergal cooling and bussing device (with the power brick of integrated cooling and bus device), the structure of arranged alternate coldplate between monomer is proposed at the flexible-packed battery of plastic-aluminum combined encapsulation, as accompanying drawing 18, can solve that monomer is fixed and problem such as cooling.Problems such as but this patent exists the monomer lug to connect has adopted a large amount of bolts, too complicated, and the battery management system conductor arrangement is unreasonable, unreliable.
The integrated application facet of current Vehicular dynamic battery also exists another general problem to be, screening back consistency is after battery cell is formed module or battery case preferably, and in use consistency is difficult to influence the overall performance of battery system lastingly.Its reason have following some:
Battery cell is given a shock when vehicle operation, becomes after the powder body material long-term vibration of pole plate top to loosen even come off, and causes the monomer capacity difference opposite sex to increase.
Cell in use, thereby can constantly produce the gas bulging, pole plate is separated, influence consistency and other performance of battery capacity, serious meeting causes safety problem.
Because cooling is inhomogeneous, different monomers working temperature in use can be variant, makes that the rate of decay of electrochemical reaction system is inconsistent, will cause performance inconsistent after the accumulation.
The problems referred to above can also be improved the battery service condition and consider except from manufacture view improves the consistency of monomer itself from system integration aspect.The introduction of above-mentioned background illustrates that also there are problems in the application of current electric vehicle electrokinetic cell, also has improved space.
The utility model content
The utility model is intended to overcome the deficiency of prior art, provides a kind of volume energy density and weight energy density good at the flexible package rectangular cell, and cost performance is excellent, and is integrated easy to maintenance, safe in utilization, and the life-span, long one compressed the superposing type battery module.
The utility model is to adopt following proposal to realize: one compresses the superposing type battery module, comprise battery cell, coldplate, lug briquetting, elasticity lug briquetting, end plate, U-shaped metallic interconnect, two lugs of described battery cell are arranged on the same side of described battery cell or relative two sides, described battery cell and described coldplate are a plurality of, both are alternately stacked, and the corresponding lug of adjacent cell monomer is superimposed together; Replace stacked battery cell and the coldplate two ends respectively are provided with an end plate described, be connected with at least four bolts, nut between the described end plate; Described U-shaped metallic interconnect is installed in an end of described lug briquetting, a described lug briquetting or described elasticity lug briquetting are installed between the lug of adjacent two battery cells, and the lug of adjacent cell monomer is installed in the U-lag of described U-shaped metallic interconnect.
In the utility model, described coldplate is made by the metal of good heat conductivity, the hole or the breach that are provided with flanging all around and allow bolt pass through, and at least one coldplate middle part has the groove that holds temperature sensor and lead.
In the utility model, described lug briquetting is the cuboid which is provided with the heat radiation through hole.
In the utility model, described elasticity lug briquetting is made up of two first briquetting, second briquettings which is provided with the heat radiation through hole, described first briquetting, second briquetting adopt the mode of pegging graft to connect, and are provided with the retainer spring sheet in described first briquetting, the second briquetting plugging position.
In the utility model, be filled with silica gel or similar semi-fluid substance between described battery cell and the coldplate, separate air, increase contact area each other, improve heat radiation.
In the utility model, described battery module upper surface is provided with loam cake.
In the utility model, the cover plate of described battery module is provided with circuit board, and described circuit board is provided with the gage beam of a plurality of each monomer battery voltage of detection, and described gage beam one end is fixed on the described circuit board, and the other end suppresses on described U-shaped metallic interconnect.
In the utility model, be fitted with a temperature sensor that is used to detect the battery cell temperature at least in the groove that described coldplate middle part is provided with.
In the utility model, the flanging place of described coldplate is provided with the otch or the perk of heat radiation.
In the utility model, the medial surface that described end plate contacts with coldplate is plane or middle high slightly curved surface, described plane or curved surface are provided with a plurality of through holes, when compressing with coldplate, between battery pole plates, produce inhomogeneous thrust, the pressure at middle part is big slightly, and the pressure of periphery is slightly little, this is inhomogeneous to compress the gas that method is convenient to produce in the battery operated process and is discharged to the outside of pole plate, thereby reduces the negative effect of battery flatulence to battery capacity, improves consistency.
In the utility model, any one mode that described adjacent monomer battery adopts series, parallel or connection in series-parallel to mix connects, and respectively there is a lug at two ends as the external electricity output of module.
The utility model is owing to adopt said structure, the rectangular cell monomer of a plurality of flexible packages is replaced stacked combination with described coldplate become module, a plurality of battery cells are formed a line, corresponding monomer lug also aligns and forms a line, the metal cools plate good with thermal conductivity separates battery cell one by one, arranges end clamp plate at the two ends of this body of itemizing; Bolt passes end plate, is tightened on the nut, and, battery cell and coldplate etc. compressed becomes an integral body, also the lug briquetting between the adjacent lug is compressed simultaneously, and adjacent lug is connected as one by the U-shaped metallic interconnect, forms a module.Have following advantage:
1, positive pole powder material, the negative pole powder body material with battery cell is pressed on respectively on positive plate and the negative plate, avoided powder body material to get loose or drop because of vibrations, guarantees the monomer consistency not because of vibrations degenerate, and prolongs the monomer life-span;
2, integrated compressing also avoided simultaneously fitting between general battery plus-negative plate plate and the barrier film not tight, improved the motion of electrochemical reaction intermediate ion, reduces the resistance of electrochemical reaction and the heating of monomer, makes battery can produce bigger discharging current;
3, adopt coldplate to be arranged in the monomer both sides, improved the conduction of heat, heat can be passed or pass into better, help reducing the working temperature of battery cell;
4, the medial surface that contacts with coldplate of end plate is the plane, when compressing with coldplate, the gas that produces in the battery operated process can be discharged to the outside of pole plate, thereby reduce the negative effect of battery flatulence to battery capacity, improves the battery cell consistency.As preferred version, the medial surface that end plate contacts with coldplate can not be the plane also, but middle high slightly curved surface, when compressing coldplate, between battery pole plates, produce inhomogeneous thrust, the pressure at middle part is big slightly, and the pressure of periphery is slightly little, the gas that this differential pressure is convenient to produce in the battery operated process is discharged to the outside of pole plate, thereby reduces the negative effect of battery flatulence to battery capacity, eliminates battery flatulence to performance negative effects such as battery capacities; Improve consistency.Also improve the integrated space efficiency of battery cell simultaneously, reduced the battery module volume.
5, adopt the metallic plate of the good heat conductivity that is provided with flanging as coldplate, the firstth, increase heat transfer area, guarantee heat output, because the length of flanging is controlled easily, can be according to actual caloric value design flanging total length, can make each monomer temperature uniformity of inside modules better, improve the monomer consistency, increase the adaptability of module; Second effect of flanging is the side of parcel battery cell, guarantees that monomer can not be shifted when vibrations; The 3rd, when needed, also can electric heater unit be installed at the flanging place, guarantee the suitable working temperature of battery cell.Compare with the scheme of monomer outer wall heat conduction with air with pure, the advantage that one compresses overlaying scheme is that the heat-sinking capability of module is very strong, and can be by the thickness of adjusting coldplate and the Optimal Control that flanging length realizes temperature when design;
In addition, the coldplate edge is bent into approximate box type, is combined into the shell of a relative closure,, can further improve the monomer anti-shake performance, stop the intrusion of foreign object at a plurality of lateral protection battery cells.
Offer the groove that is used for mounting temperature sensor and lead at part coldplate middle part, will closely contact with monomer and accurately measure monomer temperature, and need not anyly additionally fix and just can guarantee operate as normal thereby be placed on temperature sensor in the groove.
Between coldplate and monomer contact-making surface, apply or fill good viscosity or half stickum of heat conductivility, (but being not limited to) silica gel for example, with the air between thorough eliminating coldplate and the monomer shell, improve heat dispersion, these materials also help securing unit and avoid vibrations or impact, perhaps the time passes for a long time and causes coming off and the loss of battery capacity of electrochemistry powder body material, also had the suitable seal effect, stop outside moisture may invade battery cell, the electrolyte that also can stop battery cell inside flows out and prevents the battery premature damage.
6, adopt lug briquetting and elasticity lug briquetting to be arranged in the structure at adjacent monomer lug place, when bolt compresses battery cell, also the lug of adjacent cell monomer is compressed and link together by lug briquetting and elasticity lug briquetting, realize the series connection or the parallel connection of adjacent cell monomer, lug compresses by the U-shaped metallic plate, form three contact-making surfaces, increased the area that passes through of electric current between the lug, the heating when having reduced the resistance of whole module and work; This method can realize that the series, parallel of lug of adjacent cell monomer or the any-mode that connection in series-parallel mixes connect; The module two ends are provided with the pole of external output electric energy, and pole also is connected by the lug that same U-shaped metallic plate compresses mode and monomer.The inner ripple spring that is provided with of elasticity lug briquetting has guaranteed even if size has deviation, also can produce suitable thrust to lug when hold-down bolt compression battery cell.
7, adopt said structure, needn't be separately for each group lug be provided with independent hold-down bolt, all lugs are all simultaneously with same defeating tightly; Reduce the quantity of lug connecting bolt, reduced cost and weight, particularly improved the reliability of system, simplified assembly working.
8, the circuit board that on the cover board is provided with of the utility model, be mainly used in voltage and the temperature of measuring each battery cell, circuit board is provided with the gage beam made from conducting metal, one end is fixed on the circuit board, the other end, forms with lug and to be electrically connected and to measure lug voltage on the lug of monomer by self elastic compression.Circuit board is pressed on the U-shaped metallic plate by gage beam, just on the battery pole ear, avoid bolt to connect, but the simplified system complexity reduces cost.Because circuit lead shortens, reduce the suffered interference of voltage signal and temperature signal simultaneously, improved certainty of measurement.Circuit board is connected on the cover board by the reference column on the cover plate, no longer needs bolt.When assembling and maintenance modules, cover plate and circuit board can be dismantled together, have simplified the work of assembling and maintenance.
In a word, the utility model is on current state-of-the-art building block technique basis, new cell integrated morphology and method have been proposed, it is better to aim to provide a volume energy density and weight energy density, cost performance is more excellent, and is integrated easy to maintenance, safety, long-life battery module is suitable for large-scale industrialization and uses.
Description of drawings
Accompanying drawing 1 compresses superposing type battery module stereogram for the utility model one.
Accompanying drawing 2 is dressed up the schematic diagram of unit for typical coldplate in the utility model and set of monomers.
Accompanying drawing 3 is a typical plate structure of cooling schematic diagram in the utility model.
Accompanying drawing 4 is the local enlarged diagram of another plate structure of cooling in the utility model.
Accompanying drawing 5 is the utility model medial end portions plate structure of cooling schematic diagram.
Accompanying drawing 6 is monomer and an extreme ear structure schematic diagram in the utility model.
Accompanying drawing 7 removes battery pole ear and lug briquetting installation diagram behind the cover plate for the utility model accompanying drawing 1.
Accompanying drawing 8 is independent pole and lug assembling detail figure in the utility model.
Accompanying drawing 9 is a lug briquette structure schematic diagram in the utility model.
Accompanying drawing 10 is lug and an elasticity lug briquetting syndeton schematic diagram in the utility model.
Accompanying drawing 11 is an elasticity lug briquette structure schematic diagram in the utility model.
Accompanying drawing 12 is the structural representation of circuit board and gage beam in the utility model.
Accompanying drawing 14 is the utility model cover plate structural representation.
Accompanying drawing 15 is the mounting structure schematic diagram figure of the utility model cover plate and circuit board.
Accompanying drawing 16 is the utility model end plates structural representation.
Accompanying drawing 17 is coldplate and a temperature sensor installation site structural representation in the utility model.
Accompanying drawing 18 is the power brick structural representation of U.S. Pat 07531270 with integrated cooling and bus device.
Among the figure:
The 10-end plate, the 11-hole, the 12-hole, the 13-hole,
The 20-bolt,
The 30-pole, 30a-pole briquetting, 30b-pole briquetting, 31a-lug briquetting, 31b-lug briquetting, 32a-elasticity lug briquetting, 32b-elasticity lug briquetting, 33-U shape metallic plate, 34-ripple spring, 35-corner block
The 40-cover plate, 41-battery management system circuit board, the 42-gage beam, the 45a-breach, the 45b-breach, the 46-hole, the 47-buckle,
The 50-nut,
The 60-coldplate, 61-coldplate flanging, 62-coldplate flanging, 63-groove, 64-temperature sensor, the otch or the perk at 66-coldplate flanging place
The 70-battery cell, 71-battery cell lug one, 72-battery cell lug two.
Concrete real mode
Compress the superposing type battery module referring to accompanying drawing 1 the utility model one, comprise a plurality of battery cells 70 and the coldplate 60 alternately placed, block the battery module lid 40 of lug, be fixed on two poles 30 on the module lid, two end plates 10 and at least four groups are packed together to whole bolt 20 and nut 50 etc. to monomer 70, coldplate 60.The module modes of emplacement is not limited to the horizontal mode as Fig. 1, but also other attitude such as vertical placement.
Referring to accompanying drawing 2, coldplate is arranged between the monomer, coldplate and monomer centering, and two big faces are fitted each other, become a unit.
Referring to accompanying drawing 2,3,4,5, described coldplate 60 is made by the good heat conductivity metal material, (but being not limited to) aluminium alloy plate for example, and copper alloy plate, perhaps almag plate, there is flanging 61,62 at the edge; The wrap direction of the edge flanging 61,62 of coldplate 60 can be various, and assembling back cooling fin also can be combined into the shell of a relative closure, to stop the intrusion of foreign object, does not form the shell of sealing after also can assembling.The effect of edge flanging has 3 points, and the firstth, increase heat transfer area, guarantee heat output, because the length of flanging is controlled easily, can increase the adaptability of module according to actual caloric value design flanging total length; Second effect of flanging is the side of parcel battery cell, guarantees that monomer can not be shifted when vibrations; The 3rd, when needed, also can electric heater unit be installed at the flanging place, guarantee the suitable working temperature of battery cell.The installation and design of electric heater unit is not within the utility model discussion scope.In order to strengthen the thermal conduction effect of flanging and air, can also offer some otch or perk 66 at the flanging place, as the partial enlarged drawing of Fig. 4 coldplate flanging.
Referring to accompanying drawing 6, battery cell 70 is rectangular bodies of flexible package, and it has two lugs 71,72, and lug can stretch out in the same one side of monomer, also can stretch out at opposite face, and the utility model is stretching out as the demonstration example explanation with one side with two lugs.Lug is before needing bending in groups, and the mode of bending can be various.As required, the lug of adjacent monomer battery connects in the mode that homopolarity links to each other or different poles links to each other, to realize the in parallel or series connection of cell; The lug of adjacent two monomers must compress mutually, can also form the in parallel or electricity series connection of electricity, and respectively there is a lug at the module two ends as the external electricity output of module.
Referring to accompanying drawing 7, lug connects the employing one and compresses method, the lug of whole module is lined up two rows, briquetting 31a, 31b, 32a and 32b are arranged in the both sides of adjacent monomer two lugs, when bolt 20 compressed battery cell 70, also the lug that needs are connected compressed and forms good electrical connection, and two lugs at module two ends link to each other with 30b with pole briquetting 30a, pole briquetting 30a, 30b also are connected by the lug of same mode that compresses and monomer, and pole 30 is terminals that module is externally exported electric energy.
Referring to accompanying drawing 8,9, screwed hole is arranged at pole 30 tops, be used to connect outside electric conductor, the side of the rectangular slab of bottom is welded with thin U-shaped metallic plate 33 to form good electrically connecting, be cast in the pole briquetting after pole 30 and 33 welding of U-shaped metallic plate, battery cell lug 72 places the groove of U-shaped metallic plate 33, will form two conductive contact surfaces after the module one compresses, resistance is less, has reduced the resistance of whole module and the heating in when work.
Referring to accompanying drawing 10, it is the both sides that briquetting 32a and 32b are arranged in lug 71,72 that typical lug compresses connected mode, U-shaped metallic interconnect 33 is connected with briquetting 32a end, lug 71,72 is enclosed in the U-lag, when there is pressure at two ends, U-shaped metallic interconnect 33 compresses and forms three conductive contact surfaces with lug 71,72, and such multiaspect contact compresses the conduction connected mode can reduce connection resistance effectively.
Referring to accompanying drawing 11, described briquetting 32a, 32b are provided with the hole that is used for weight reduction, briquetting 32a one end is provided with an elongated slot, 32b one end is provided with the triangle projection 35 that is used to fasten, be stuck in the square hole of 32a, make the two connect into an integral body, briquetting 32a elongated slot end inside is provided with ripple spring leaf 34, be in order to guarantee that when hold-down bolt compressed battery cell, therefore each briquetting also compressed and lug is produced suitable thrust.
Referring to accompanying drawing 1, the power that compresses adjacent monomer and lug is all from the hold-down bolt 20 of module, and all lugs are all simultaneously with same defeating tightly.It is the quantity that has reduced the lug connecting bolt that multiaspect contact one compresses the method advantage, needn't organize lug for each independent hold-down bolt is set, and has reduced cost and weight, has particularly improved the reliability of system, has simplified assembly working.
Referring to accompanying drawing 12,13,14,15, the circuit board 41 be furnished with battery management system near a face of lug is mainly used in voltage, the temperature of measuring each battery cell, bears effects such as monomer capacity equilibrium.Circuit board 41 is provided with the gage beam made from conducting metal 42, gage beam 42 1 ends are fixed on the circuit board 41, the other end is cantilever-shaped to be stretched out, and end has a bit of circular arc bending, by self elastic compression on U-shaped metallic interconnect 33, be electrically connected with lug formation, compress the method that connecting plate comes measurement voltage signal with elastic sheet metal, no longer need bolt to connect, simple in structure, cost is low, and dismounting process is simple.Because the shortening of circuit lead has reduced the suffered interference of signal, improved certainty of measurement simultaneously.
The circuit board 41 and the module cover 40 of battery management system link together.Circuit board 41 is connected on the cover board by the reference column on the cover plate 40 47, no longer needs bolt.When assembling and maintenance modules, but cover plate 40 and circuit board 41 integrated removals have been simplified the work of assembling and maintenance.Battery case is made up of a plurality of modules, needs communication between each module and the battery case, and circuit board 41 has communication interface, can arrange as required in position, and the design of communication interface and layout be not within the utility model.
The cover plate 40 main protection and decorative effects that rise; its two ends have breach 45a and 45b; be used to allow module positive and negative terminals 30 expose; the bottom is provided with a plurality of buckles or card post 47; be used for the location of battery management system circuit board and fixing; also be provided with a plurality of holes 46, line up many groups, be used for the circulation of inside modules air.
Referring to accompanying drawing 16, the battery module two ends are provided with the end plate 10 that nonmetallic materials are made, and a big face of end plate is the plane, are used for being close to coldplate 60, coldplate 60 and each battery cell 70 smooth applying when assurance compresses, and the smooth and applying of inner each pole plate of monomer.The medial surface that contacts with coldplate 60 can not be the plane also, but middle high slightly curved surface, like this when compressing coldplate, between battery pole plates, produce inhomogeneous thrust, the pressure at middle part is big slightly, and the pressure of periphery is slightly little, and this is inhomogeneous to compress the outside that gas that method is convenient to produce in the battery operated process is discharged to pole plate, thereby reduce of the negative effect of battery flatulence, improve consistency and life-span battery capacity.Described plane or curved surface are provided with a plurality of through holes.
End plate also has numerous small through hole 11 on the 10 big planes, and this example adopts slot, also can adopt hole or other arrangement mode of other shape, and these through holes are convenient to the heat radiation of end coldplate, but and weight reduction.Also be provided with a plurality of screwed holes 12 on end plate 10 other faces, be used for that module is fixed or module between connection, this method can allow module be fixed on automobile or the Battery case with any attitude.Also be provided with four holes or breach 13 on the end plate at least, be used to allow bolt 20 pass through, compress whole module.
The module clamping force must be controlled suitably, compresses the damage monomer to avoid many degree, and this can realize by the length that designs suitable nut 50.Nut 50 has four at least, is hollow body, and the two ends inwall design of pipe has internal thread, cooperates with the bolt 20 at two ends.Bolt 20 passes end plate 10, be tightened in the nut 50, distance between end plate 10 medial surfaces is exactly the length of nut 50, and the total length after all coldplates and monomer stack just compresses has just been controlled the degree that monomer compresses by the length of suitable design nut 50 like this.
The clamping of the end plate 10 by two ends, there is the parcel of metal cools plate 60 flangings the centre, and the fail safe of battery module is greatly improved, even catastrophe failures such as inside modules outlet short circuit can not produce problems such as blast yet.
Referring to accompanying drawing 17, part coldplate 60 at centre fluting 63, is used to settle temperature sensor and lead 64 as required.If sensor thickness, diameter of wire and coldplate thickness are approaching, will closely contact with monomer and accurately measure monomer temperature thereby be placed on temperature sensor in the groove, and need not be any additionally fixingly just can guarantee operate as normal.
The utility model also proposes to coat the good stickum of skim thermal conductivity in the battery cell packaged surface earlier, (but being not limited to) silica gel for example, again battery cell 70 and cooling fin 60 are combined into the unit, it is good therefore to fit between monomer and the cooling fin, there is not bubble, can guarantees that like this monomer heat radiation is good.
The packaging technology of the utility model module is as follows, battery cell 70 and cooling fin 60 are combined into the unit, actual needs according to module, each unit is stacked into one group according to the connection in series-parallel relation, cooling fin and monomer arranged alternate, and all there is cooling fin at the both ends of this group, place end clamp plate 10 at two ends, with bolt 20 and nut 50 preliminary fixing above-mentioned each unit, but do not compress.Lug briquetting 31,32 is arranged in lug 71,72 both sides that need compress, and module pole briquetting 30a, 30b are placed on the module two ends, progressively hold-down bolt 20 are tightened, up to the moment of setting.The cover plate 40 that will have circuit board 41 covers the position of setting on module, guarantee the monomer lug in position, tightens set bolt 20, has just formed complete battery module.
Claims (10)
1. one compresses the superposing type battery module, comprise battery cell, coldplate, lug briquetting, elasticity lug briquetting, end plate, U-shaped metallic interconnect, it is characterized in that: two lugs of described battery cell are arranged on the same side of described battery cell or relative two sides, described battery cell and described coldplate are a plurality of, both are alternately stacked, and the corresponding lug of adjacent cell monomer is superimposed together; Replace stacked battery cell and the coldplate two ends respectively are provided with an end plate described, be connected with at least four hold-down bolts, nut between the described end plate; Described U-shaped metallic interconnect is installed in an end of described lug briquetting, a described lug briquetting or described elasticity lug briquetting are installed between the lug of adjacent two battery cells, and the lug of adjacent cell monomer is installed in the U-lag of described U-shaped metallic interconnect.
2. one according to claim 1 compresses the superposing type battery module, it is characterized in that: described coldplate is made by the metal of good heat conductivity, be provided with flanging all around, the edge is provided with hole or the breach that allows bolt pass through, and at least one coldplate middle part has the groove that holds temperature sensor and lead.
3. one according to claim 2 compresses the superposing type battery module, it is characterized in that: described elasticity lug briquetting is made up of two first briquetting, second briquettings which is provided with the heat radiation through hole, described first briquetting, second briquetting adopt the mode of pegging graft to connect, and are provided with spring leaf in described first briquetting, the second briquetting plugging position.
4. one according to claim 3 compresses the superposing type battery module, it is characterized in that: be filled with silica gel between described battery cell and the coldplate, separate air, increase contact area each other, improve heat radiation.
5. one according to claim 4 compresses the superposing type battery module, it is characterized in that: described battery module upper surface is provided with loam cake.
6. one according to claim 5 compresses the superposing type battery module, it is characterized in that: the cover plate of described battery module is provided with circuit board, described circuit board is provided with the gage beam of a plurality of each monomer battery voltage of detection, described gage beam one end is fixed on the described circuit board, and the other end suppresses on described U-shaped metallic interconnect.
7. one according to claim 6 compresses the superposing type battery module, it is characterized in that: be fitted with a temperature sensor that is used to detect the battery cell temperature at least in the groove that described coldplate middle part is provided with.
8. one according to claim 7 compresses the superposing type battery module, it is characterized in that: the flanging place of described coldplate is provided with the otch or the perk of heat radiation.
9. one according to claim 8 compresses the superposing type battery module, it is characterized in that: the medial surface that described end plate contacts with coldplate is plane or middle high slightly curved surface, described plane or curved surface are provided with a plurality of through holes, and the side of described end plate is provided with a plurality of screwed holes.
10. compress the superposing type battery module according to any described one of claim 1～9, it is characterized in that: any one mode that described adjacent monomer battery adopts series, parallel or connection in series-parallel to mix connects, and respectively there is a lug at two ends as the external electricity output of module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206579299U CN201975466U (en) | 2010-12-14 | 2010-12-14 | Integral pressed stacked battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206579299U CN201975466U (en) | 2010-12-14 | 2010-12-14 | Integral pressed stacked battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975466U true CN201975466U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206579299U Expired - Fee Related CN201975466U (en) | 2010-12-14 | 2010-12-14 | Integral pressed stacked battery module |
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| CN102064291A (en) * | 2010-12-14 | 2011-05-18 | 长丰集团有限责任公司 | Integrally-impacted stacking battery module |
| CN102569937A (en) * | 2012-02-15 | 2012-07-11 | 中国电力科学研究院 | Radiating type flexible package battery module group |
| CN102945940A (en) * | 2012-11-16 | 2013-02-27 | 山东衡远新能源科技有限公司 | Lithium ion power battery and processing method thereof |
| CN104347829A (en) * | 2013-07-29 | 2015-02-11 | 深圳市比克电池有限公司 | Integration electrical core module |
| CN104466074A (en) * | 2014-11-24 | 2015-03-25 | 山东神工海特电子科技有限公司 | Flexible package battery lug welding method |
| WO2015127838A1 (en) * | 2014-02-25 | 2015-09-03 | 江苏华东锂电技术研究院有限公司 | Battery module |
| CN105474456A (en) * | 2013-08-28 | 2016-04-06 | 株式会社Lg化学 | Battery module comprising structure for preventing mixing of refrigerant and exhaust gas |
| CN105895847A (en) * | 2015-09-29 | 2016-08-24 | 北京长城华冠汽车科技股份有限公司 | Tab connection device, power battery module and automobile |
| CN106684392A (en) * | 2016-11-21 | 2017-05-17 | 深圳海能动力控股有限公司 | Cathode-air electrode, hydroelectric generation metal-air battery and preparation method |
| CN112285567A (en) * | 2020-10-20 | 2021-01-29 | 欣旺达电动汽车电池有限公司 | Battery cell calendar life testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102064291B (en) * | 2010-12-14 | 2013-04-10 | 长丰集团有限责任公司 | Integrally-impacted stacking battery module |
| CN102064291A (en) * | 2010-12-14 | 2011-05-18 | 长丰集团有限责任公司 | Integrally-impacted stacking battery module |
| CN102569937A (en) * | 2012-02-15 | 2012-07-11 | 中国电力科学研究院 | Radiating type flexible package battery module group |
| CN102569937B (en) * | 2012-02-15 | 2014-03-12 | 中国电力科学研究院 | Radiating type flexible package battery module group |
| CN102945940A (en) * | 2012-11-16 | 2013-02-27 | 山东衡远新能源科技有限公司 | Lithium ion power battery and processing method thereof |
| CN102945940B (en) * | 2012-11-16 | 2015-06-17 | 山东衡远新能源科技有限公司 | Lithium ion power battery and processing method thereof |
| CN104347829A (en) * | 2013-07-29 | 2015-02-11 | 深圳市比克电池有限公司 | Integration electrical core module |
| CN104347829B (en) * | 2013-07-29 | 2019-06-14 | 深圳市比克动力电池有限公司 | Integrated battery core module |
| CN105474456B (en) * | 2013-08-28 | 2017-02-15 | 株式会社Lg 化学 | Battery module comprising structure for preventing mixing of refrigerant and exhaust gas |
| CN105474456A (en) * | 2013-08-28 | 2016-04-06 | 株式会社Lg化学 | Battery module comprising structure for preventing mixing of refrigerant and exhaust gas |
| WO2015127838A1 (en) * | 2014-02-25 | 2015-09-03 | 江苏华东锂电技术研究院有限公司 | Battery module |
| CN104466074A (en) * | 2014-11-24 | 2015-03-25 | 山东神工海特电子科技有限公司 | Flexible package battery lug welding method |
| CN105895847A (en) * | 2015-09-29 | 2016-08-24 | 北京长城华冠汽车科技股份有限公司 | Tab connection device, power battery module and automobile |
| CN105895847B (en) * | 2015-09-29 | 2018-05-22 | 北京长城华冠汽车科技股份有限公司 | A kind of lug attachment device, power battery module and automobile |
| CN106684392A (en) * | 2016-11-21 | 2017-05-17 | 深圳海能动力控股有限公司 | Cathode-air electrode, hydroelectric generation metal-air battery and preparation method |
| CN112285567A (en) * | 2020-10-20 | 2021-01-29 | 欣旺达电动汽车电池有限公司 | Battery cell calendar life testing device and method |
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