CN100350646C - Casing structure of battery unit - Google Patents
Casing structure of battery unit Download PDFInfo
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- CN100350646C CN100350646C CNB2005100554639A CN200510055463A CN100350646C CN 100350646 C CN100350646 C CN 100350646C CN B2005100554639 A CNB2005100554639 A CN B2005100554639A CN 200510055463 A CN200510055463 A CN 200510055463A CN 100350646 C CN100350646 C CN 100350646C
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- battery pack
- battery
- vehicle
- housing
- cooling air
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- 238000001816 cooling Methods 0.000 claims description 95
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000011324 bead Substances 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 29
- 238000009413 insulation Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 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
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- Secondary Cells (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A battery case 102 of a battery pack 100 formed by stacking a plurality of battery modules 110 at prescribed intervals has beads 106, 112 formed at prescribed intervals so as to face the bottom surface in the vertical direction to the stacking direction of the battery modules 110. The beads 106, 112 are grooves projecting toward the inside of the battery case 102.
Description
Technical field
The present invention relates to the shell structure of battery pack, particularly relate to the inside of battery pack and efficiently flow into cooling air, and have the desired rigid housing structure in position and position according to battery-mounted group.
Background technology
In the past, known hybrid vehicle, fuel-cell vehicle, the electric automobile that has the actuating force that is used to spontaneous motivation to travel.In such vehicle, be equipped with battery pack in order to store the electric energy that is supplied to engine.Battery pack constitutes by stacked a plurality of battery modules.
For example open and disclose a kind of minimizing that suppresses the weight energy density of battery in the flat 11-126585 communique, and improved the battery pack of cooling effectiveness the Japanese documentation spy.This battery pack has disposed the nonaqueous electrolytic solution secondary battery of a plurality of square (angle type) shape, and is connected and/or electrical connection side by side, and wherein said nonaqueous electrolytic solution secondary battery comprises positive pole, negative pole, electrolytic solution, battery case and battery cover.Battery pack is provided with control circuit board above the battery cover of battery, and is integral with insulating element and is connected with support plate on two monocell sides that are connected to two ends.
According to the disclosed battery pack of above-mentioned communique, use the battery pack structure compactness of square nonaqueous electrolytic solution secondary battery, and excellent radiation performance.
In addition, above-mentioned battery pack comprises the cover as the housing of battery pack, its objective is the battery module that protection is inner.In the cover of battery pack, be provided with the reinforcement of reinforcement (bead) such as groove shape etc., to improve the rigidity of cover.
But the suffered impulsive force of battery pack is according to the difference at battery-mounted group position and position and different problems when exist colliding.That is,,, can't disperse because the rigidity of battery housing is too high by the impulsive force that collision brings then according to the position if form the reinforcement of groove etc. in the entire circumference of battery pack.Therefore exist battery pack inside to be subjected to the possibility of big impulsive force.Its on the other hand, if on housing, do not form reinforcement, then since the rigidity of battery housing cross low and can't sponge the impulsive force of bringing by collision fully.Therefore exist battery pack inside to be subjected to the possibility of big impulsive force.
In addition, because there are the little problem in gap between cover and the battery pack in the miniaturization of battery pack and the formation of reinforcement.In battery pack, be provided with and wait the cooling device of supplying cooling air, with the battery module of cooled interior by cooling fan.If the gap between cover and the battery pack is little, then the passage sections area that passes through of cooling air is just little.Therefore, the pressure loss on the path that flows through of cooling air is very big.If the pressure loss is very big, then exist the load of the cooling fan of not only supplying cooling air to become big, and the problem that also descends of the cooling effectiveness of battery pack.
Summary of the invention
The purpose of this invention is to provide a kind of loading position and position and on housing, have the shell structure of the battery pack of necessary rigidity according to battery pack.
Other purposes of the present invention provide the shell structure of the battery pack of the increase of the pressure loss on a kind of path that is suppressed at cooling air and high cooling efficiency.
The shell structure of battery pack of the present invention is the shell structure of carrying the battery pack on vehicle.Have rib on housing, described rib is that benchmark is arranged on the rear side on the vehicle fore-and-aft direction with the end of the wheelhouse portions of vehicle, is used to provide the rigidity of housing.Rib is the recessed groove that is provided with.
According to the present invention, on the housing that is equipped on the battery pack on the vehicle, have rib, described rib is a benchmark with the end of the wheelhouse portions of vehicle, along the fore-and-aft direction of described vehicle, is set at the rear side on the vehicle fore-and-aft direction, is used to provide the rigidity of housing.Rib is the recessed groove that is provided with.Wherein, be formed with cooling air passway in described housing, described groove can be suppressed at the increase of the pressure loss on the described cooling air passway.Thus, for example suppose be hit the from the side situation of power of vehicle, then can be in the vehicle rear-side of comparing with the end of wheelhouse portions, be connected with tire and the crossbeam that is arranged on lower vehicle disperses the suffered impulsive force of battery pack by wheelhouse portions, tire and via suspension.Therefore, if groove is set,, then can absorb the suffered impulsive force of box body on housing by the rigidity of housing to improve rigidity.In addition, for collision from the rear, owing on direction is contracted in axial compression, be formed with rib, so can bring into play favourable effect.Its on the other hand, in the front side of the vehicle more forward, by the vehicle body power that is hit than wheelhouse portions end.Vehicle body absorbs impact by the distortion of vehicle body.Therefore, when only failing to sponge fully impact by the distortion of vehicle body, the impulsive force that the housing of battery pack can be subjected to vehicle body to fail to sponge fully.At this moment, the suffered impulsive force of battery case is compared bigger with the rear side of vehicle after the wheelhouse portions end is more leaned on.Owing to reinforcements such as groove are not set, so, can absorb impulsive force by the battery case self-deformation at the position of the power that is hit of the front side of the vehicle more forward than wheelhouse portions end in the front side of the vehicle more forward than wheelhouse portions end.Therefore, can be according to the desired rigidity of battery case, at the ribs such as part formation groove of necessity.Thereby, the shell structure that has the battery pack of necessary rigidity according to loading position and position can be provided.
Battery pack is preferably stacked and form by a plurality of battery modules predetermined space of being separated by.On the direction vertical, form groove corresponding to the interval with the stacked direction of battery module.In housing, on the direction vertical, supply cooling air with stacked direction.
According to the present invention, battery pack is stacked and form by a plurality of battery modules predetermined space of being separated by.On the direction vertical, form groove accordingly with predetermined space with the stacked direction of battery module.In housing, on the direction vertical, supply cooling air with stacked direction.Thus, owing on the end with wheelhouse portions is front side on the vehicle fore-and-aft direction of benchmark, be not provided for improving the groove of the rigidity of battery housing, so can suppress owing to the increase that the pressure loss that groove causes is set in housing.In addition, owing to supply cooling air being provided with on the direction of groove, so on the path of cooling air, the long-pending variation of the passage sections that is caused by groove is little.Therefore, can be suppressed at the increase of the pressure loss on the path, thereby can supply cooling air efficiently to battery module.
In addition, be preferably in and be provided on the housing cooling air is fed to feeding mechanism in the housing.Feeding mechanism is set at the downstream of the cooling air of opposed slot.
According to the present invention, on housing, be provided for cooling air is fed to feeding mechanism (for example cooling fan) in the housing.Feeding mechanism is set at the downstream of the cooling air of opposed slot.Thus, if cooling fan is arranged on the downstream of the cooling air of opposed slot, then in the path of the cooling air of enclosure interior, the air in downstream that is provided with the path of groove relatively is discharged from easily, therefore is cooled easily.On the other hand, at the upstream side of the path that is provided with groove relatively, be benchmark with the wheelhouse portions end, groove is not set at the front side of vehicle fore-and-aft direction.Therefore, housing has the space of the air capacity of the abundance that can import the cool batteries module at the upstream side of cooling air.Thereby, can reduce the deviation of the chilling temperature of upstream and downstream.Therefore can cool off uniformly battery pack.
In addition, the length on the length of groove preferably has from the end of wheelhouse portions to the vehicle fore-and-aft direction the tire at least.
According to the present invention, the length on the length that is arranged at the groove on the housing of battery pack has from the end of wheelhouse portions to the vehicle fore-and-aft direction the tire at least.For example, under battery pack is set at situation between the wheelhouse portions, tire is set in wheelhouse portions.Therefore, the impulsive force of being brought by the collision from the side is absorbed by tire.But, may be transferred on the housing to the impulsive force that collision brought the tire from the end of wheelhouse portions.Therefore, at least at the groove that the length on having from the end of wheelhouse portions to the vehicle fore-and-aft direction the tire is set on the housing.That is,, the increase of the pressure loss on the cooling air passway can be suppressed at, the rigidity of housing can also be guaranteed simultaneously as required by forming groove in the part of necessity according to the desired rigidity of housing.
In addition, preferably housing is carried under seat.
According to the present invention, battery pack is carried under seat.Thus, can be suitable for the shell structure of following battery pack on the housing that is equipped on the battery pack under the seat, the shell structure of described battery pack has been taken into account the optimization of the passage shape of supply cooling air in housing and the raising of housing rigidity.
The shell structure of battery pack of the present invention is the structure of the housing of battery pack.Battery pack forms by stacked a plurality of battery modules.On housing, on the direction vertical, form groove with the stacked direction of a plurality of battery modules, described groove is configured to its bottom surface towards between the battery module.
According to the present invention, battery pack forms by stacked a plurality of battery modules.Have rib on the housing of battery pack, described rib forms accordingly with described predetermined space on the direction vertical with the stacked direction of a plurality of battery modules.Rib is to the inboard recessed groove that is provided with of housing.Wherein, be formed with cooling air passway in described housing, described groove can be suppressed at the increase of the pressure loss on the described cooling air passway.Thus, because groove is configured to towards between the battery module, amass so can guarantee bigger battery module and the passage sections between the housing.In addition, on the path that cooling air flows through, the long-pending variation of the passage sections that is caused by groove is little.Therefore, the increase of the pressure loss on the cooling air passway can be suppressed at, thereby the air-supply of cooling air can be carried out efficiently battery module.That is, can carry out the cooling of battery module efficiently.Thereby, a kind of shell structure of battery pack of high cooling efficiency can be provided by the increase that is suppressed at the pressure loss on the cooling air passway.
In housing, be preferably on the direction vertical and supply cooling air with the stacked direction of a plurality of battery modules.
According to the present invention, in housing, for example supply cooling air to the direction vertical with the stacked direction of a plurality of battery modules by cooling fan.The groove that is arranged on the housing of battery pack is set on the direction vertical with the stacked direction of battery module.Thereby, owing to supply cooling air being provided with on the direction of groove, so the long-pending variation of the passage sections that is caused by groove on the path of cooling air is little.Therefore,, can not apply under the situation of high load capacity, battery module carried out efficiently the air-supply of cooling air to cooling fan by suppressing the increase of the pressure loss on the path.That is, can efficiently carry out the cooling of battery module.In addition, on the path that cooling air flows through, because the long-pending minimizing of passage sections etc. is with low uncertainty, so for example can reduce the noise that causes by the wind song of the cooling air that is produced in the little place of the sectional area of path etc.
In addition, battery module metallic battery module preferably.And insulating element is set respectively between a plurality of battery modules.Relative to insulating element the landform grooving on housing.
According to the present invention, battery module is the metallic battery module.Insulating element is set respectively between a plurality of battery modules.Relative to insulating element the landform grooving on housing.Thus, on the path that cooling air flows through, the long-pending minimizing of passage sections can be suppressed, the rigidity of battery housing can also be improved simultaneously.Therefore, can take into account the optimization of passage shape of cooling air and the raising of battery housing rigidity.
In addition, housing is preferably carried on vehicle.On housing, be benchmark with the end of the wheelhouse portions of vehicle, on the vehicle fore-and-aft direction, groove is set.
According to the present invention, housing is carried on vehicle.The desired rigidity of housing that is equipped on the battery pack on the vehicle is because factor such as collision, sometimes according to the housing position and difference.For example, when the part that is the rear view of vehicle of benchmark is required to have the rigidity that can tackle the impulsive force that the collision from the side brings, be benchmark with the wheelhouse portions end with the end of wheelhouse portions, on the fore-and-aft direction of vehicle, groove is set.That is,, can be suppressed at the increase of the pressure loss on the cooling air passway, also can guarantee the rigidity of housing simultaneously as required by partly forming groove in necessity according to the desired rigidity of housing.
Description of drawings
Fig. 1 is the simplified diagram of carrying the vehicle of the battery pack in the present embodiment;
Fig. 2 is the 2-2 schematic cross-section of Fig. 1;
Fig. 3 is the 3-3 schematic cross-section of Fig. 2;
Fig. 4 is the interior mobile figure of cooling air of battery case that present embodiment is shown;
Fig. 5 is the simplified diagram of the vehicle of the power that is hit from the side.
Embodiment
The shell structure of the battery pack of the embodiment of the invention is described with reference to the accompanying drawings.In the following description, for the identical identical label of parts mark.Their title is also identical with function.Therefore, do not repeat detailed description to them.In addition, about the shell structure of the battery pack of present embodiment,, be not limited to this though explanation is applicable to the situation of hybrid vehicle.For example also go for electric automobile, can also be applicable to fuel-cell vehicle.
As shown in Figure 1, carry in the battery pack on the vehicle 100 and be set between the wheelhouse portions 302,306 of rear tyre 200,202 of vehicle rear-side.In the present embodiment, though battery pack 100 is set at the downside of vehicle rear seat, be not particularly limited.For example, also can be configured in the vehicle mid portion, can also be configured under the front side seat of passenger accommodation.
On battery case 102,, be provided with a plurality of reinforcement portions 106 towards the inboard recessed groove shape that is provided with of battery case as the rib of the rigidity that improves battery case 102.Reinforcement portion 106 is set on the fore-and-aft direction of vehicle.In the battery case 102 of present embodiment, reinforcement portion 106 is a benchmark with the wheelhouse portions end 304 as the border between vehicle body 300 and the wheelhouse portions 302, is formed on the rear side of vehicle.
As shown in Figure 2, battery pack 100 comprises that box 113 reaches box 114, battery module 110, cooling fan 104 down.The front side of the vehicle in the last box 113 is to being provided with air inlet 116.In addition, following box 114 is the same with last box 113, is provided with the reinforcement portion 112 of a plurality of groove shape, with as improving the rib 112 of the rigidity of box 114 down.Reinforcement portion 112 is also the same with reinforcement portion 106, is the rear side that benchmark is positioned at wheel with wheel end 304, and the front and back that groove is provided in vehicle extend upward.
Downside at cooling fan 104 is connected with blast pipe 108.Blast pipe 108 connects via peristome, and described peristome is arranged on the bottom in the space of the aggregate 101 of taking in battery module.Battery pack 100 forms by the battery module 110 with the predetermined stacked predetermined number in interval.Between battery module, be provided with and make the insulation board 118 of battery module each other in state of insulation.Here, be not particularly limited " predetermined interval ", for example can be the thickness of insulation board 118, it also can be following interval, be the thickness that described interval comprises insulation board 118, and gap that had, that cooling air passes through on above-below direction between the battery module of battery module aggregate 101.
As shown in Figure 3, battery module aggregate 101 comprises end plates 120 and insulation board 118 and battery module 100.Battery module aggregate 101 constitutes by the battery module 110 of stacked predetermined number on the Width of vehicle.
In addition, though battery module 110 comprises six unit in the present embodiment, suitable setup unit number for example also can be 8 cell types (if use the unit identical with present embodiment, then being that rated voltage is 9.6V) etc.In addition, be not limited to metally as the integral box of module package member, also can suitably use resinous etc.
In addition, between each battery module 110, be provided for making insulation board each other in state of insulation.A plurality of juts are set, so that abut on box 113 and the following box 114 on insulation board 118.Between each battery module 110,, bus etc. is electrically connected in series by being set in the side.
Be provided with the end plates 120 that are used for battery pack 100 is fixed on the box 114 down in two ends on the stacked direction of battery module aggregate 101.In the present embodiment, for example with coupling together between conduit etc. (not having diagram) end plates 120, and the end plates 120 of two ends are fixed on down on the box 114 two ends.Like this, the position of having limited each battery module 110 by insulation board 118, and can battery pack 100 be fixed on down on the box 114 by end plates 120.
Set reinforcement portion 106,112 is set on the direction vertical with the stacked direction of battery module 110 on the last box 113 of present embodiment and the following box 114.Reinforcement portion 106,112 be formed with battery module 110 between predetermined space corresponding.Therefore, on the above-below direction of battery module aggregate 101, itself and last box 113 and down the gap 122,124 of box 114 between separately become and on the fore-and-aft direction of vehicle, suppress because the shape that the long-pending minimizing of the passage sections that reinforcement portion 106,112 causes etc. change.
Below with reference to the effect of Fig. 4 explanation based on casing mechanism aforesaid structure, present embodiment battery pack 100.
When cooling fan 104 drives, the air of cooling fan 104 sucking-off battery cases 102 inside, and it is discharged to the outside of battery case 102.Because the inside at battery case 102 produces negative pressure, so cooling air is supplied in the box 113 via the air inlet that is connected in the passenger accommodation.The cooling air that supply is come in is sent to the top of battery module aggregate 101 along the dividing plate that is arranged at battery case 102 inside.That is, cooling air is supplied in the gap 112 as cooling air passway that is formed between box 113 and the battery module aggregate 101.At this moment, on the direction vertical, supply cooling air with the stacked direction of battery module aggregate 101.
Be supplied to the gap of cooling air in the gap 112 by between the battery module 110 that constitutes battery module aggregate 101, forming, mobile from the gap 124 of gap 122 between box 114 downside and following of the upside of battery module aggregate 101.
At this moment, in gap 122,124, because long-pending the reducing etc. of the passage sections that causes of reinforcement portion 106,112 changes very little.Thereby, in gap 122,124, suppressed because the increase of the pressure loss that the long-pending variation of passage sections causes.
Cooling air arrives blast pipe 108 from the peristome of the below that is arranged in the space of taking in battery module aggregate 101 after the heat of removing battery module aggregate 101.Cooling air is discharged into the outside via cooling fan 104.
In addition, in the present embodiment, the battery case 102 desired rigidity of carrying the battery pack 100 on vehicle are because factors such as collisions, sometimes according to the position of battery case 102 and difference.
That is, in the present embodiment, battery pack 100 carried from tire 200,202 on the position of the fore-and-aft direction skew of vehicle.As shown in Figure 5, suppose because from the collision of the side of tire 200 1 sides the be hit situation of power of vehicle.In some part of wheelhouse portions 302 and tire 200, can be arranged on the crossbeam that connects via suspension of lower vehicle by wheelhouse portions 302, tire 200 and from tire 200, impulsive force is disperseed.Therefore, even reinforcement portion 106,112 is being set on the battery case 102 between the wheelhouse portions 302,306, also can utilize the rigidity of battery case 102 to absorb the impulsive force that is input on the battery case 102.
On the other hand, in the part that does not have wheelhouse portions 302 and tire 200 (than the end 304 of wheelhouse portions more to the part of the battery case 102 of vehicle front side), because side is hit the impulsive force of bringing and is imported on vehicle body 300 and the battery case 102.Therefore,, thereby make rigidity too high, then hit the impulsive force of bringing and on battery case 102, do not disperse, thereby the inside of battery pack 100 may be subjected to very big impulsive force by side if reinforcement portion is set at the position of the input impulsive force of battery case 102.Therefore, adopt following structure in the present embodiment: promptly, be benchmark, to reinforcement portion 106,112 is set, and the reinforcement such as groove etc. be not set in the front side of vehicle to the rear of wheel with wheelhouse portions end 304.Front side in wheelhouse portions end 304, battery case 102 self absorbs impulsive force by distortion, and the degree of described distortion can make battery module aggregate 101 power that is not hit.
In addition, the length that is arranged on the reinforcement portion 106,112 on the battery case 102 of battery pack 100 preferably has the length on the vehicle fore-and-aft direction 200 from wheelhouse portions end 304 to tire at least.
For example, under battery pack 100 was set at situation between the wheelhouse portions 302, tire 200 was set in the wheelhouse portions 302.Therefore, the impulsive force of colliding is from the side absorbed by tire 200.But, the position of the length on the vehicle fore-and-aft direction 200 from wheelhouse portions end 304 to tire, the impulsive force of Chong Zhuaning can't be absorbed by tire 200 from the side.That is, the impulsive force of being brought by collision 200 may be imported into battery case 102 from wheelhouse portions end 304 to tire.Therefore, by the reinforcement portion 106,112 of the length on the vehicle fore-and-aft direction that is provided with at least on the battery case 102 from wheelhouse portions end 304 to tire 200, can guarantee to absorb or to disperse rigidity from the battery case 102 of the impulsive force of the impact of side.
As mentioned above, by coming according to battery case 102 desired rigidity on the part of necessity, to form reinforcement portion 106,112, can be suppressed at the increase of the pressure loss on the path of cooling air, meanwhile can also guarantee the rigidity of battery case as required.
As mentioned above, according to the shell structure of the battery pack in the present embodiment, by reinforcement portion being set, thereby can absorb the suffered impulsive force of battery case by the rigidity of battery case in the vehicle rear-side of comparing with the wheelhouse portions end.On the other hand, the vehicle front side of comparing with the wheelhouse portions end is not for being provided with the structure of reinforcements such as groove.Therefore, on the position of the impulsive force of the vehicle front side that is subjected to comparing with the wheelhouse portions end, the distortion by battery case self absorbs impulsive force, described distortion degree make the battery module aggregate not be subjected to the degree of impulsive force.Therefore, can come to form reinforcements such as groove according to desired rigidity on the battery case in the part of necessity.Thereby, can improve a kind of shell structure that has the battery pack of necessary rigidity according to loading position and position.
In addition, the battery case of battery pack has the reinforcement portion that forms accordingly with predetermined space on the direction vertical with the stacked direction of a plurality of battery modules.Reinforcement portion is towards the recessed groove that is provided with in the inboard of housing.Thus, because groove is configured in the face of between the battery module, amass so can guarantee bigger battery module and the passage sections between the battery case.In addition, on the path that cooling air flows through, the long-pending variation of the passage sections that is caused by groove is little.Therefore, the increase of the pressure loss on the cooling air passway can be suppressed at, thereby the air-supply of cooling air can be carried out efficiently battery module.That is, can under the situation of the load that does not increase cooling fan, carry out the cooling of battery module efficiently.Thereby, can provide a kind of shell structure of battery pack of high cooling efficiency by being suppressed at the increase of the pressure loss on the cooling air passway.In addition, on the path that cooling air flows through, because the long-pending minimizing of passage sections etc. is with low uncertainty, so can reduce the noise that causes by the wind song of cooling air etc.
In addition, be not set at front side on the vehicle fore-and-aft direction that end with wheelhouse portions is a benchmark, so can suppress owing to the increase that the pressure loss that groove causes is set in housing owing to improve the groove of the housing rigidity of battery pack.
In addition, preferably cooling fan is arranged on than groove and more is positioned on the position in downstream of cooling air.Thus, in the cooling air passway of battery case inside, in the downstream of the path that is provided with groove, air is discharged from easily owing to cooling fan, so be cooled easily.In addition, at the upstream side of the path that is provided with groove, it is front side on the vehicle fore-and-aft direction of benchmark that groove is not set at the wheelhouse portions end.Therefore, housing has the space of the air capacity of the abundance that can import the cool batteries module at the upstream side of cooling air.Thereby, can reduce the deviation of the chilling temperature of upstream and downstream.Therefore can cool off uniformly battery pack.
In addition, be preferably each insulation board reinforcement portion is set.Thus, can in the increase that suppresses the pressure loss, can also further improve the rigidity of battery case.
Should think current the disclosed embodiments, its all aspects are example, rather than be used to limit.Scope of the present invention is not by above-mentioned explanation but represented by the scope of claim, and the meaning that is equal to of the scope with claim that is included in and all changes in the scope.
Claims (11)
1. the shell structure of the battery pack of a lift-launch on vehicle, wherein,
Have rib on described housing, described rib is a benchmark with the end of the rear wheel cover of described vehicle, along the fore-and-aft direction of described vehicle, is set at the rear side on the fore-and-aft direction of described vehicle, and is used to improve the rigidity of described housing,
Described rib is the recessed groove that is provided with,
Wherein, be formed with cooling air passway in described housing, described groove can be suppressed at the increase of the pressure loss on the described cooling air passway.
2. the shell structure of battery pack as claimed in claim 1, wherein, predetermined space is stacked to be formed described battery pack by being separated by by a plurality of battery modules,
Described groove forms corresponding to described interval on the direction vertical with the stacked direction of described battery module,
In described housing, on the direction vertical, supply cooling air with described stacked direction.
3. the shell structure of battery pack as claimed in claim 2 wherein, is provided with in described housing and is used for cooling air is fed to feeding mechanism in the described housing,
Described feeding mechanism is set at the downstream of described cooling air with respect to described groove.
4. the shell structure of battery pack as claimed in claim 1, wherein, the length on the length of described groove has from the end of described wheelhouse portions to the vehicle fore-and-aft direction the tire at least.
5. as the shell structure of each described battery pack in the claim 1 to 4, wherein said housing is carried under the seat of described vehicle.
6. the shell structure of a battery pack, wherein, predetermined space is stacked to be formed described battery pack by being separated by by a plurality of battery modules,
Have rib on described housing, described rib forms corresponding to described interval on the direction vertical with the stacked direction of described a plurality of battery modules,
Described rib is to the recessed groove that is provided with in the inboard of described housing,
Wherein, be formed with cooling air passway in described housing, described groove can be suppressed at the increase of the pressure loss on the described cooling air passway.
7. the shell structure of battery pack as claimed in claim 6 wherein, in described housing, is supplied cooling air on the direction vertical with the stacked direction of described a plurality of battery modules.
8. as the shell structure of claim 6 or 7 described battery pack, wherein, described battery module is the metallic battery module,
Between described a plurality of battery modules, be respectively arranged with insulating element,
Form described groove relatively with described insulating element on described housing to ground.
9. the shell structure of battery pack as claimed in claim 6, wherein, described housing carries on vehicle,
On described housing, be benchmark with the end of the rear wheel cover of described vehicle, the fore-and-aft direction of vehicle is provided with described groove.
10. the shell structure of battery pack as claimed in claim 9, wherein, the length on the length of described groove has from the end of described rear wheel cover to the fore-and-aft direction of the described vehicle the tire at least.
11. as the shell structure of claim 9 or 10 described battery pack, wherein, described housing is carried under the seat of described vehicle.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP118671/2004 | 2004-04-14 | ||
| JP2004118671A JP4742514B2 (en) | 2004-04-14 | 2004-04-14 | Battery pack and its casing |
| JP123859/2004 | 2004-04-20 | ||
| JP2004123859A JP4742515B2 (en) | 2004-04-20 | 2004-04-20 | Battery pack and its casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1684287A CN1684287A (en) | 2005-10-19 |
| CN100350646C true CN100350646C (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100554639A Expired - Fee Related CN100350646C (en) | 2004-04-14 | 2005-03-18 | Casing structure of battery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350646C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11345631A (en) * | 1998-06-02 | 1999-12-14 | Fuji Film Celltec Kk | Battery package |
| CN1286501A (en) * | 1999-08-31 | 2001-03-07 | 松下电器产业株式会社 | Battery |
| JP2001080431A (en) * | 1993-01-25 | 2001-03-27 | Tokai Kogyo Co Ltd | Side protector molding for automobile |
-
2005
- 2005-03-18 CN CNB2005100554639A patent/CN100350646C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001080431A (en) * | 1993-01-25 | 2001-03-27 | Tokai Kogyo Co Ltd | Side protector molding for automobile |
| JPH11345631A (en) * | 1998-06-02 | 1999-12-14 | Fuji Film Celltec Kk | Battery package |
| CN1286501A (en) * | 1999-08-31 | 2001-03-07 | 松下电器产业株式会社 | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1684287A (en) | 2005-10-19 |
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