CN104149721A - Vehicle-used power storage device - Google Patents
Vehicle-used power storage device Download PDFInfo
- Publication number
- CN104149721A CN104149721A CN201410204194.7A CN201410204194A CN104149721A CN 104149721 A CN104149721 A CN 104149721A CN 201410204194 A CN201410204194 A CN 201410204194A CN 104149721 A CN104149721 A CN 104149721A
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- China
- Prior art keywords
- retaining member
- rear portion
- subsidiary engine
- storage device
- vehicle
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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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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention provides a vehicle-used power storage device, and an object of the invention is to prevent damage to cables of the power storage when a vehicle receives a back collision. A package battery (12) mounted at the rear body of the vehicle includes: a battery module (20); a PCU (23) connected with the battery module (20) through a cable; a fan rotor (35); and a rear holding component (16) for holding the battery module (20), the PCU (23) and the fan rotor (35). When the vehicle receives a back collision, the fan motor (35) moves forward and fits into a through hole (16b) of the rear holding component (16), so that the problem that the PCU (23) is moved by the pressure applied by the fan rotor (35) to the PCU (23) is prevented. Therefore, relative displacement of the battery module (20) and the PCU (23) caused by collision load of the back collision can be prevented without a special reinforcing component, and the damage to the cables is thereby prevented.
Description
Technical field
The present invention relates to a kind of vehicle electrical storage device, it is the electrical storage device carrying at the body tail of vehicle, and it possesses: battery pack; The high potential member being connected with described battery pack via cable; Subsidiary engine; And the retaining member that described battery pack, described high potential member and described subsidiary engine are kept, wherein, described subsidiary engine, described retaining member and described high potential member configure from vehicle body rear towards vehicle body front successively, and described subsidiary engine is higher than described retaining member intensity.
Background technology
Be known to a kind of vehicle electrical storage device by following patent documentation 1, two front and back frameworks that extend along vehicle body fore-and-aft direction and two crossbeams that extend along overall width direction are combined into frame shape, and will be accommodated with up the battery case of multiple batteries with deflection overall width direction one side's state support, and be configured for battery carried out to cooling cooling fan in the space forming on overall width direction the opposing party's of battery case side.
[formerly technical literature]
[patent documentation]
[patent documentation 1] TOHKEMY 2009-119935 communique
[summary of invention]
[problem that invention will solve]
But, by above-mentioned vehicle with mounted thereon electric storage device during in the baggage room of body tail, because the requirement in layout exists the situation that cooling fan need to be configured in to the rear surface of battery case.In this case, in the time that vehicle is subject to rear collision, under the effect of the cooling fan configuring in the rear surface of battery case in impact load, is pressed towards front, thereby may is that the fan propeller that rigidity is high is pressed in battery case by the parts of cooling fan.Owing to being accommodated with the high potential members such as multiple battery cells, inverter in the inside of battery case and they connect by cable mutually, therefore the fan propeller advancing under by the effect in impact load when high voltage installation is pressed and when the occurrence positions changing of the relative positions, be applied with high-tension cable and pulled and damage, thus may with the metal part generation shorted to earth of vehicle body.
Summary of the invention
The present invention proposes in view of aforesaid situation, its objective is in the time that vehicle is subject to rear collision, prevents the damage of the cable of electrical storage device.
[solution]
To achieve these goals, according to a first aspect of the invention, provide a kind of vehicle electrical storage device, it is characterized in that, it is the electrical storage device carrying at the body tail of vehicle, and it possesses: battery pack; The high potential member being connected with described battery pack via cable; Subsidiary engine; And the retaining member that described battery pack, described high potential member and described subsidiary engine are kept, wherein, described subsidiary engine, described retaining member and described high potential member configure from vehicle body rear towards vehicle body front successively, described subsidiary engine is higher than described retaining member intensity, is formed with the through hole larger than described subsidiary engine on described retaining member.
In addition, according to a second aspect of the invention, provide a kind of vehicle electrical storage device, on the basis of the structure of a first aspect of the present invention, it is characterized in that, described subsidiary engine possesses than the low housing of described retaining member intensity, and described housing is larger than described through hole.
In addition, according to a third aspect of the invention we, a kind of vehicle electrical storage device is provided, of the present invention first or the basis of the structure of second aspect on, it is characterized in that, the fore-and-aft direction distance between the rear end of described high potential member and the rear end of described retaining member is larger than the fore-and-aft direction size of described subsidiary engine.
In addition, according to a forth aspect of the invention, provide a kind of vehicle electrical storage device, on the basis of the of the present invention first structure to either side in the third aspect, it is characterized in that, described subsidiary engine is that described electrical storage device is carried out to cooling fan propeller.
It should be noted that, the packaged battery 12 of embodiment is corresponding to electrical storage device of the present invention, the rear portion retaining member 16 of embodiment is corresponding to retaining member of the present invention, the battery module 20 of embodiment is corresponding to battery pack of the present invention, the PCU23 of embodiment is corresponding to high potential member of the present invention, the front shell 33 of embodiment and rear portion housing 34 are corresponding to housing of the present invention, and the fan propeller 35 of embodiment is corresponding to subsidiary engine of the present invention.
[invention effect]
Structure according to a first aspect of the invention, the electrical storage device carrying at the body tail of vehicle possesses: battery pack; The high potential member being connected with battery pack via cable; Subsidiary engine; The retaining member that battery pack, high potential member and subsidiary engine are kept.Subsidiary engine, retaining member and high potential member configure from vehicle body rear towards vehicle body front successively, therefore in the time that vehicle is subject to rear collision, before subsidiary engine and then be embedded in the through hole of retaining member, thereby can prevent subsidiary engine from pressing high potential member and situation that high potential member is moved.Thus, special tension member need not be set, just can prevent the impact load because of rear collision, make the mutual occurrence positions changing of the relative positions of battery pack and high potential member and damage the situation of cable.In the situation that impact load is large, be embedded in retaining member under the state of through hole at subsidiary engine and advance, but battery pack and high potential member and retaining member one advance, therefore their position relationship can the changing of the relative positions.
In addition, structure according to a second aspect of the invention, subsidiary engine possesses the housing lower than retaining member intensity, and housing is larger than through hole, and therefore, in the time subsidiary engine being advanced because of the impact load of rear collision, the surrounding of housing and through hole interferes and destroys.Thus, the size of through hole can be suppressed to Min. and guarantee the rigidity of retaining member, can make reliably subsidiary engine be embedded in the inside of the through hole of retaining member simultaneously.
In addition, structure according to a third aspect of the invention we, fore-and-aft direction distance between the rear end of high potential member and the rear end of retaining member is larger than the fore-and-aft direction size of subsidiary engine, even if the subsidiary engine therefore advancing because of the impact load of rear collision is embedded in the inside of the through hole of retaining member completely, between the front end of subsidiary engine and the rear end of high potential member, also remain with gap, thereby can prevent reliably the situation that high potential member forwards moves.
In addition, structure according to a forth aspect of the invention, subsidiary engine is that electrical storage device is carried out to cooling fan propeller, therefore in the time that the impact load fan propeller because of rear collision advances, can prevent from being pressed by fan propeller and situation that high potential member forwards moves.
Brief description of the drawings
Fig. 1 is the block diagram that is equipped with the body tail of packaged battery.
Fig. 2 is the exploded perspective view of packaged battery.
Fig. 3 is that 3 directions of Fig. 1 are to view.
Fig. 4 is the 4-4 line cutaway view of Fig. 3.
Fig. 5 is the 5-5 line cutaway view of Fig. 3.
Fig. 6 is the 6-6 line cutaway view of Fig. 3.
Fig. 7 is the 7-7 line cutaway view of Fig. 6.
Fig. 8 is the 8-8 line cutaway view of Fig. 3.
Fig. 9 is the block diagram of sensor wrap.
Figure 10 is the block diagram of support.
Figure 11 is the block diagram of restraint member.
Figure 12 is the block diagram of engagement mechanism.
[nomenclature]
12 packaged batteries (electrical storage device)
16 rear portion retaining members (retaining member)
16b through hole
20 battery modules (battery pack)
23 PCU (high potential member)
33 front shell (housing)
34 rear portion housings (housing)
35 fan propellers (subsidiary engine)
Detailed description of the invention
Below, based on Fig. 1～Figure 12, embodiments of the present invention are described.
As shown in Figure 1, on the base plate 11 of the baggage room of the body tail of hybrid motor vehicle, be formed with the recess 11a to lower recess, in this recess 11a, carry packaged battery 12.Packaged battery 12 possesses: be formed as the container-like plastic shell 13 that upper surface opens wide; Be formed as tabular and by the metal cover 14 of the upper surface open portion obturation of shell 13; Extend and both ends are fixed on metal anterior retaining member 15 and the rear portion retaining member 16 on the upper surface of base plate 11 along overall width direction.Shell 13 and cover 14 are fixed on anterior retaining member 15 and rear portion retaining member 16, and are suspended in midair and be bearing in recess 11a by anterior retaining member 15 and rear portion retaining member 16.
As shown in Figures 1 and 2, the overall width direction pars intermedia of anterior retaining member 15 and rear portion retaining member 16 becomes respectively tabular antetheca 15a and rear wall 16a, between the lower end of antetheca 15a and rear wall 16a, be connected by diapire 17 one, and between the left end of antetheca 15a and rear wall 16a, be connected by left side sidewall 18, between antetheca 15a and the right-hand member of rear wall 16a, be connected by right sidewall 19.
Between anterior retaining member 15 and rear portion retaining member 16, be supported with 4 battery modules 20 ...Battery module 20 is for example by by 12 battery cells 21 that are made up of lithium ion battery ... stacked, and utilize 4 frameworks 29 ... four jiaos of a pair of end plate 22,22 stacked at these stacked direction both ends are connected to each other and are formed.4 battery modules 20 ... so that battery cell 21 ... stacked direction be set up in parallel in overall width direction along the state of fore-and-aft direction proper alignment, a pair of end plate 22,22 respectively with antetheca 15a and the fastening link of rear wall 16a of anterior retaining member 15 and rear portion retaining member 16.
Between the antetheca 15a and rear wall 16a of anterior retaining member 15 and rear portion retaining member 16, and at 4 battery modules 20 ... left side be equipped with PCU (power control unit) 23, this PCU23 comprises battery module 20 ... high-voltage direct current convert the inverter of three-phase alternating current to, described high-voltage direct current step-down become to DC-DC conv of low tension current etc.
On the front surface of anterior retaining member 15, be fixed with junction board 24, this junction board 24 via not shown cable by battery module 20 ... and PCU23 connects.Be provided with battery module 20 at junction board 24 ... and the contactless switch that being electrically connected between PCU23 cut off or fuse.And, at battery module 20 ... the rear surface of rear wall 16a of rear portion retaining member 16 at rear be provided with battery cell 21 ... multiple monomer voltage sensors 25,25 of measuring of voltage, and the sensor wrap being made up of metal sheet 26 these monomer voltage sensors 25,25 being covered from rear is fixed on the rear surface of rear wall 16a of rear portion retaining member 16.
On the rear surface of the rear wall 16a of the rear portion retaining member 16 at the rear of PCU23, be provided with cooling fan 27.In the time driving cooling fan 27, via the not shown air intake passage being connected with the cooling-air sucking hole 13b (with reference to Fig. 1) forming on rear wall 13a at shell 13 from the indoor suction cooling-air of car, and to battery module 20 ... and PCU23 has carried out exhaust after cooling and has discharged outside car by cooling fan 27 and exhaust passage 28.
Next,, based on Fig. 3～Figure 12, describe the structure of the each several part of packaged battery 12 in detail.
As shown in Fig. 3, Fig. 5 and Figure 10, cooling fan 27 is supported by the fixing support 31 of the left end of the rear wall 16a at rear portion retaining member 16.Support 31 is that metal sheet is carried out to the member that drawing forms, and possesses the main part the 31a locally surrounding of cooling fan 27 being surrounded, the weld part 31b that the front end bending of main part 31a is formed and is welded in rear wall 16a ..., the rear end bending of main part 31a is formed and on front surface, is welded with welded nut 32 ... flange part 31c ...To the curve 31d of the outstanding triangular-section of radial outside ... be formed on the main part 31a of support 31 in the mode of locally surrounding of cooling fan 27 being surrounded.
Cooling fan 27 possesses the plastic front shell 33 and the rear portion housing 34 that mutually combine, and disposes coaxially the cooling fan motor 36 of metal fan propeller 35 and drive fan rotor 35 therein.3 installation bracket 34a ... from forwards outstanding setting of periphery of rear portion housing 34, by connecting these installation brackets 34a ... and the flange part 31c of support 31 ... 3 bolts 37 ... to welded nut 32 ... screw togather, thereby cooling fan 27 is fixed on to support 31.
At the weld part 31b by support 31 ... on the rear wall 16a of the rear portion retaining member 16 surrounding, be formed with the through hole 16b of circular, on the front surface of through hole 16b, be fixed with the passage supporting member 38 of square shape.Plastic access road 39 extends from the inside of the mediad through hole 16b of front shell 33, flange part 39a at the square shape of the front end setting of access road 39 is fixed on passage supporting member 38, consequently, the front end of access road 39 with the opposed mode opening in rear surface of PCU23.
Known according to Fig. 5, the diameter a of fan propeller 35 sets littlely than the diameter b of the through hole 16b of rear portion retaining member 16, and the diameter c of front shell 33 and rear portion housing 34 sets greatlyr than the diameter b of through hole 16b.And, set than the fore-and-aft direction thickness e of fan propeller 35 greatly to the fore-and-aft direction of the rear end of PCU23 apart from d from the rear end of through hole 16b.And the part being clipped by cooling fan 27 and PCU23 of rear portion retaining member 16 is with respect to other forwards bending (with reference to Fig. 3) of part.
As shown in Fig. 2～Fig. 4 and Fig. 9, the sensor wrap 26 monomer voltage sensor 25,25 being fixed on the rear surface of rear wall 16a of rear portion retaining member 16 being covered from rear is by the multiple crest line 26a that extend along the vertical direction ... strengthen, and on its front surface, overlap reinforcement 40 and be further strengthened.4 protrusion 41A, 41B, 41C, 41D are arranged on the front surface of reinforcement 40 in the mode outstanding towards front.Implantation is arranged on 5 thru-bolts 42 on the rear wall 16a of rear portion retaining member 16 ... the upper and lower side of 1 protrusion 41D of 3 protrusion 41A, 41B, 41C center and the right-hand member in left side is connected and with nut 43 ... screw togather, thus, the space that has a regulation in the rear surface of the rear wall 16a of rear portion retaining member 16 fixes sensor wrap 26.
Known according to Fig. 3, protrusion 41A is positioned at the rear of the framework 29 in the left side of the battery module 20 of the leftmost side, protrusion 41C is positioned at the rear of the framework 29 on right side of the battery module 20 of second from left side and the framework 29 in the left side of the battery module 20 of the 3rd from left side, and protrusion 41D is positioned at the rear of the framework 29 on the right side of the battery module 20 of the rightmost side.
As shown in Fig. 2, Fig. 3, Fig. 6, Fig. 7 and Figure 11, the cover 14 that the upper surface open portion of shell 13 is covered is by 6 bolts 44 ... and be fixed on the upper surface of anterior retaining member 15 and the upper surface of rear portion retaining member 16 in mounting or dismounting mode freely.Be formed with opening 14a elongated on overall width direction at the right-hand member of the cover 14 forwards stretching out from anterior retaining member 15, this opening 14a is covered by the lid 14b installing and removing freely by 2 bolts 45,45.Be fixed with metal restraint member 46 at the lower surface of the cover 14 towards opening 14a.Pair of right and left weld part 46d, 46e that restraint member 46 possesses pair of right and left bottom wall part 46a, 46b, forms by the side wall portion 46c connecting between above-mentioned bottom wall part 46a, 46b, at the two ends, left and right of this side wall portion 46c, and restraint member 46 is fixed at weld part 46d, the welding of 46e place the lower surface that covers 14.1 pin 46h implants the bottom wall part 46a that is arranged at left side upward.
Weld part 46d, 46e are arranged on the rear end side of restraint member 46, with the continuous side wall portion 46c in the front of weld part 46d, 46e on, be formed with for and the lower surface of cover 14 between form pair of right and left otch 46f, the 46g of space alpha.
The service plug (service plug) 47 arranging towards the position below opening 14a at cover 14 comprises: be fixed on the first halfbody 49 on the antetheca 15a of anterior retaining member 15 by 2 bolts 48,48; The second halfbody 50 that can dismounting with respect to the first halfbody 49.On the first halfbody 49, be provided with the engagement pin 51 outstanding to horizontal direction, on the second halfbody 50, be formed with can be chimeric with the pin 46h of restraint member 46 pin-and-hole 50a.And, on the second halfbody 50 via bolster 52 the mode pivot suspension securing rod 53 swinging, and on this securing rod 53, be formed with the circular-arc cam path 53a that can engage with the engagement pin 51 of the first halfbody 49.
As shown in Fig. 2, Fig. 3, Fig. 8 and Figure 12, be formed with 3 through hole 14c along the front end of cover 14 ..., by these through holes 14c ... the engagement mechanism 54 of engagement is arranged on the front end of shell 13 integratedly.Engagement mechanism 54 possesses: the flange part 54a forwards stretching out from the front end of shell 13; Via be formed as thin-walled can be bending the first hinge part 54b and the first connecting part 54c of being connected with the front end of flange part 54a; Via be formed as thin-walled can be bending the second hinge part 54d and the second connecting part 54e of being connected with the front end of the first connecting part 54c; And 3 engagement pawl 54f that arrange at the front end of the second connecting part 54e ...On flange part 54a, be formed with and can supply 3 engagement pawl 54f ... 3 stop hole 54g of engaging ...
Therefore, as shown in Figure 8, be placed with via containment member 55 at the upper surface of the flange part 54a of shell 13 under the state of cover 14, by first, second hinge part 54b, 54d bending and make engagement pawl 54f ... connect from the top down the through hole 14c that covers 14 ... afterwards, make engagement pawl 54f ... stop hole 54g with flange part 54a ... engaging, can be fixed on shell 13 by the front portion of cover 14 thus.
As shown in Figure 2 to 4, be provided with pair of right and left in the front portion of packaged battery 12 and be pressed into member 56,56.Respectively being pressed into member 56 is pressed into member 56a and front portion by rear portion and is pressed into member 56b and forms, the rear portion on right side is pressed into member 56a and forms by the bulk that makes a part of antetheca 15a for anterior retaining member 15 protrude cuboid, and the left part that the rear portion in left side is pressed into the antetheca 15a of member 56a by making anterior retaining member 15 forms so that the mode outstanding towards front is bending.And pair of right and left front portion is pressed into member 56b, 56b and forms by the bulk that makes a part of antetheca 13c for shell 13 protrude cuboid.
The rear portion on right side is pressed into member 56a and anterior be pressed into member 56b and configure in the mode overlapping on fore-and-aft direction, and the rear portion in left side is pressed into member 56a and is anteriorly pressed into member 56b and configures in the mode overlapping on fore-and-aft direction.Being pressed into the fore-and-aft direction size g that the fore-and-aft direction size f of member 56 or rear portion be pressed into member 56a sets than the fore-and-aft direction size of junction board 24 large (with reference to Fig. 4).Consequently, in being pressed into the space that member 56a, 56a surround, the rear portion of the antetheca 13c of the antetheca 15a by anterior retaining member 15, shell 13, left and right receives junction board 24.And it is large that the height setting that the front portion of left and right is pressed into member 56b, 56b must be pressed into the height of member 56a, 56a than the rear portion of left and right.
As shown in FIG. 1 to 3, the eyelet 58 that the three-phase alternating current line 57 forwards extending from PCU23 arranges from the antetheca 13c at shell 13 after draw outside, the hole 11c (with reference to Fig. 1) forming on the antetheca 11b by the recess 11a at base plate 11 and being connected with dynamotor.Be provided with between the hole 11c forming on the antetheca 13c of shell 13 of eyelet 58 and antetheca 11b at the recess 11a of base plate 11, forming space beta (with reference to Fig. 3) by a part of antetheca 13c for shell 13 is caved in backward.And anterior retaining member 15 is also corresponding with the depression of shell 13 and a part is caved in backward.
By this space beta, in the time PCU23 forwards being moved because of the impact load of rear collision, can prevent that three-phase alternating current line 57 is clipped between the antetheca 13c of shell 13 and the antetheca 11b of the recess 11a of base plate 11 and the situation of damage occurs.
Next, the effect of the embodiments of the present invention that possess said structure is described.
In order to cover 14 from storage battery module 20 ..., PCU23 shell 13 take off, first 2 bolts 48,48 are relaxed and lid 14b is taken off from covering 14 opening 14a, the securing rod 53 of the second halfbody 50 of the service plug of exposing to opening 14a 47 is unlocked around bolster 52 pull-ups, by opening 14a, the second halfbody 50 is extracted and made them separate (with reference to Fig. 6) from the first halfbody 49 afterwards.Thus, the electric contact in service plug 47 becomes noncontact and battery module 20 ... broken by TURP, even come in contact and also become safe state with the inside of shell 13.Start 6 bolts 44 that screw togather with anterior retaining member 15 and rear portion retaining member 16 from this state ... relax, thereby cover 14 can be taken off.
In addition, before the second halfbody 50 of service plug 47 is extracted, because the pin-and-hole 50a of the second halfbody 50 is chimeric from the pin 46h of top and restraint member 46, even if therefore cover 14 will be taken off, also can interfere with the second halfbody 50 with the restraint member 46 of cover 14 one, can prevent from not noting by cover 14 situations of taking off.
Install in order to cover 14, as long as with aforementioned contrary,, cover 14 is put on shell 13 and by bolt 44 ... after being fixed in anterior retaining member 15 and rear portion retaining member 16, insert the second halfbody 50 of service plug 47 from covering 14 opening 14a, so that the chimeric mode of the pin-and-hole 50a of the second halfbody 50 and engagement pin 51 make, under state that the second halfbody 50 locates with respect to the first halfbody 49, securing rod 53 levels to be fallen.So, the cam path 53a of securing rod 53 slides along the engagement pin 51 of the first halfbody 49, thereby being pressed into, the second halfbody 50 is incorporated into the first halfbody 49, the second halfbody 50 engagement Cheng Buhui are come off with engaging of engagement pin 51 by cam path 53a, and make battery module 20 ... be electrically connected with PCU23 etc.
And, last, cover by bolt 48,48 after 14b fixes, by engagement mechanism 54, the front end that covers 14 is fixed on to shell 13.; make first, second hinge part 54b, the 54d bending of engagement mechanism 54 and first, second connecting part 54c, 54e are swung to the top of cover 14, thereby make 3 engagement pawl 54f that arrange at the front end of the second connecting part 54e ... engage with 3 stop hole 54g of flange part 54a.
In addition, vehicle is in the time being knocked into the back from rear, and first impact load is inputted to the cooling fan 27 that is positioned at rear in the packaged battery 12 of receiving in the recess 11a of the base plate 11 of the baggage room of body tail.The impact load of inputting to cooling fan 27 is transmitted to rear portion retaining member 16 via support 31, but because the intensity of support 31 is set lowlyer than the intensity of rear portion retaining member 16, therefore support 31 is out of shape and impact-absorbing, thereby can prevent the distortion of rear portion retaining member 16.
Although at the battery module 20 of the inside of shell 13 storage ... and PCU23 is connected by cable via junction board 24, but the impact load of rear collision is transmitted to the PCU23 that is positioned at its front from cooling fan 27, if PCU23 is with respect to battery module 20 ... the forwards occurrence positions changing of the relative positions, by PCU23 and battery module 20 ... the cable connecting may break and ground connection occurs.
But according to present embodiment, because support 31 is easily out of shape and impact-absorbing, therefore impact load is difficult to feed through to the PCU23 in rear portion retaining member 16 and front thereof, the broken string of the cable that the movement of PCU23 can be caused is prevented trouble before it happens.And, the main part 31a of support 31 is being fixed on the weld part 31b of rear portion retaining member 16 ... with the flange part 31c that is fixed on cooling fan 27 ... between possess the fragile curve 31d that is chevron bending ... therefore under the effect of impact load, curve 31d ... easily buckle and can impact-absorbing.Now, due to the curve 31d of chevron ... top towards the outside of support 31, therefore support 31 is out of shape laterally and avoids and the interference of cooling fan 27, thus its distortion becomes and is more prone to.
Especially according to present embodiment, the part in the front that is positioned at cooling fan 27 of rear portion retaining member 16 is with respect to other forwards bending (with reference to Fig. 3) of part, therefore the cooling fan 27 that has been subject to the impact load of rear collision is not interfered with rear portion retaining member 16 and the distance that can advance increases, and impact load is more difficult to feed through to rear portion retaining member 16.
In addition, in the time making support 31 distortion while cooling fan 27 advanced, because the diameter a of fan propeller 35 sets littlely than the diameter b of the through hole 16b of rear portion retaining member 16, and the diameter c of front shell 33 and rear portion housing 34 sets than the diameter b of through hole 16b large (with reference to Fig. 5), therefore the fragile plastic front shell 33 of cooling fan 27 and rear portion housing 34 interfere and destroy with the surrounding of through hole 16b, the fan propeller 35 higher than the intensity of rear portion retaining member 16 is not embedded in the inside of through hole 16b interferingly with rear portion retaining member 16.By above-mentioned size relationship, the diameter of through hole 16b can be suppressed to Min. and guarantee the rigidity of rear portion retaining member 16, and can make reliably fan propeller 35 be embedded in the through hole 16b of rear portion retaining member 16.
As described above, the situation that can prevent fan propeller 35 from pressing rear portion retaining member 16 and rear portion retaining member 16 is deformed, the PCU23 that is positioned at the front of fan propeller 35 can not pressed by rear portion retaining member 16 and with respect to battery module 20 ... the occurrence positions changing of the relative positions, thus the broken string of cable is prevented trouble before it happens.And, when impact load is large, the entirety that is embedded in rear portion retaining member 16 under the state of through hole 16b at fan propeller 35 is advanced, and PCU23 and battery module 20 ... pressed and advanced integratedly by rear portion retaining member 16, can there is not the changing of the relative positions in their position relationship therefore.
In addition, set than the fore-and-aft direction thickness e of fan propeller 35 large (with reference to Fig. 5) to the fore-and-aft direction of the rear end of PCU23 apart from d from the rear end of the through hole 16b of rear portion retaining member 16, therefore, even if the fan propeller 35 having advanced because of the impact load of rear collision is embedded in the inside of the through hole 16b of rear portion retaining member 16 completely, between the front end of fan propeller 35 and the rear end of PCU23, also leave gap, thereby can prevent reliably PCU23 movement forwards.
In addition, on the rear surface of the rear wall 16a of rear portion retaining member 16, be provided with and be applied in high-tension monomer voltage sensor 25,25, therefore,, in the time that breakage occurs the impact load monomer voltage sensor 25,25 because of rear collision, there is the possibility that ground connection occurs.But; according to present embodiment; due to fixation of sensor cover 26 on the rear surface of the rear wall 16a at rear portion retaining member 16; and between rear portion retaining member 16 and sensor wrap 26, configure monomer voltage sensor 25,25; therefore the impact load of rear collision is transmitted to rear portion retaining member 16 via sensor wrap 26; between sensor wrap 26 and rear portion retaining member 16, guarantee thus the space that monomer voltage sensor 25,25 is protected, can prevent the damage of monomer voltage sensor 25,25.
4 battery modules 20 ... possess each 4 frameworks 29 that extend along fore-and-aft direction at Qi Sijiao ... these frameworks 29 ... the rear surface of the front surface of rear portion retaining member 16 and anterior retaining member 15 is connected, and sensor wrap 26, rear portion retaining member 16 and framework 29 ... intensity roughly the same, therefore, can be by the impact load that is input to rear portion retaining member 16 via framework 29 ... transmit and effectively make this impact load disperse to anterior retaining member 15.
Now; sensor wrap 26 is due to protrusion 41A, the 41B, 41C, the 41D that possess on the rear surface that is fixed on rear portion retaining member 16; therefore not only can guarantee by protrusion 41A, 41B, 41C, 41D the space that monomer voltage sensor 25,25 is protected; and due to three protrusion 41A, 41C, 41D and battery module 20 ... framework 29 ... proper alignment on fore-and-aft direction (with reference to Fig. 3), therefore can be reliably by impact load from protrusion 41A, 41C, 41D to framework 29 ... transmit.
When via battery module 20 ... framework 29 ... and the anterior retaining member 15 that has been passed the impact load of rear collision is while advancing, (with reference to Fig. 7) forwards pressed by anterior retaining member 15 in the bottom that is fixed on the restraint member 46 on the lower surface of cover 14.Now, if the intensity of the intensity ratio cover 14 of restraint member 46 is high, cover 14 front portion, than by bolt 44 ... be fixed on position on the upper surface of anterior retaining member 15 part on the front and be upwards out of shape and lift, between cover 14 and shell 13, may produce gap.If produce such gap, in the time that hand is inserted this gap by operator, may with battery module 20 ... contour voltage segment comes in contact.
But, according to present embodiment, in the time that restraint member 46 is forwards pressed by anterior retaining member 15, because restraint member 46 is fixed on by being positioned at weld part 46d, the 46e at rear the lower surface that covers 14, and be positioned at front otch 46f, 46g above possess space, therefore, restraint member 46 easily occurs bending and deformation towards front upper place, can prevent from thus covering the situation that upwards lift 14 front portion.
In addition, because shell 13 is fixed on by engagement mechanism 54 in cover 14 front portion, therefore also can prevent from covering 14 anterior lifting by this engagement mechanism 54.And, even just in case lift the front portion of cover 14, because engagement mechanism 54 is at flange part 54a and engagement pawl 54f ... between possess front end along shell 13 in overall width side upwardly extending first, second connecting part 54c, 54e (with reference to Fig. 8), therefore this first, second connecting part 54c, 54e also cover the gap between cover 14 and shell 13 from front, can prevent reliably thus operator inserts situation from hand to gap.
In addition, engagement pawl 54f links with flange part 54a via the first hinge part 54b, the first connecting part 54c, the second hinge part 54d and the second connecting part 54e, engagement pawl 54f ... from stop hole 54g ... while coming off, swing towards front upper place, with respect to this, by bolt 44 ... and the front portion that is fixed on the cover 14 on the upper surface of anterior retaining member 15 is with this bolt 44 ... for fulcrum swings towards back upper place.Like this, engagement pawl 54f ... moving direction different from cover 14 anterior moving direction, thus, in the time that cover 14 will lift upward, engagement pawl 54f ... be difficult to from stop hole 54g ... come off, thereby prevent from more reliably covering 14 anterior lifting.
In addition, battery module 20 ... total plus end 30A and total negative terminal 30B expose (with reference to Fig. 2) at the front surface of anterior retaining member 15, but because engagement mechanism 54 is configured in the front of total plus end 30A, therefore block by engagement mechanism 54, thereby prevent that operator's finger and total plus end 30A from coming in contact.In addition, because engagement mechanism 54 is wholely set with shell 13, even therefore at engagement pawl 54f ... from stop hole 54g ... while coming off, engagement mechanism 54 also can not separate from shell 13, and the situation that engagement mechanism 54 can be dropped or lose prevents trouble before it happens.
In addition, when the battery module 20 advancing under the effect of the impact load that anterior retaining member 15 is collided in the back ... framework 29 ... when pressing and advancing, being bearing in junction board 24 on the front surface of antetheca 15a of anterior retaining member 15 may be sandwiched between the front surface of antetheca 15a and the antetheca 11b of the recess 11a of base plate 11 and damage, but according to present embodiment, due to setting on the antetheca 15a at anterior retaining member 15 and the opposed member 56 that is pressed into of antetheca 11b of recess 11a, and the fore-and-aft direction size that is pressed into member 56 is set than the fore-and-aft direction size of junction board 24 large (with reference to Fig. 4), therefore, can make junction board 24 be positioned at by being pressed into member 46 and prevent damage with the antetheca 11b butt of recess 11a the space that support forms.
Now, be not divided into that rear portion is pressed into member 56a and front portion is pressed into these two parts of member 56b if be pressed into member 56, in the time that the front end that is pressed into member 56 slides to front upper place along the antetheca 11b of the recess 11a tilting, be pressed into the rear end of member 56 in the connecting portion place bending being connected with anterior retaining member 15, possibly cannot bring into play its function.But; according to present embodiment; be divided into owing to being pressed into member 56 that rear portion is pressed into member 56a and front portion is pressed into these two parts of member 56b; be pressed into member 56b and come off being connected of antetheca 13c of shell 13 even if therefore contingency is anterior; the front portion being clipped by antetheca 11b and shell 13 is pressed into member 56b and is pressed into member 56a with the rear portion of being fixed on anterior retaining member 15 and also can guarantees the space for the protection of junction board 24 by support, thereby can maintain the function that is pressed into member 56.
In addition, it is large that the height setting that front portion is pressed into member 56b must be pressed into the height of member 56a than rear portion, be pressed into member 56b and come off being connected of antetheca 13c of shell 13 even if therefore contingency is anterior, the load that also rear portion can be pressed into member 56a is pressed into member 56b via front portion and transmits to the antetheca 11b of recess 11a, thus make to be pressed into member 56 reliable in function bring into play.
Above, embodiments of the present invention have been described, but the present invention can carry out various design modifications in the scope that does not depart from its purport.
For example, storage battery of the present invention is not defined as the lithium ion battery of embodiment.
In addition, high potential member of the present invention is not defined as the PCU23 of embodiment.
In addition, subsidiary engine of the present invention is not defined as the fan propeller 35 of embodiment, can be miniature electric motor or is accommodated in the high members of rigidity such as the control setup in shell firmly.
Claims (4)
1. a vehicle electrical storage device, is characterized in that, it is the electrical storage device (12) carrying at the body tail of vehicle, and it possesses: battery pack (20); The high potential member (23) being connected with described battery pack (20) via cable; Subsidiary engine (35); And the retaining member (16) that described battery pack (20), described high potential member (23) and described subsidiary engine (35) are kept,
Described subsidiary engine (35), described retaining member (16) and described high potential member (23) configure from vehicle body rear towards vehicle body front successively, described subsidiary engine (35) is higher than described retaining member (16) intensity
On described retaining member (16), be formed with the through hole (16b) larger than described subsidiary engine (35).
2. vehicle electrical storage device according to claim 1, is characterized in that,
Described subsidiary engine (35) possesses the housing (33,34) lower than described retaining member (16) intensity, and described housing (33,34) is larger than described through hole (16b).
3. vehicle electrical storage device according to claim 1 and 2, is characterized in that,
Fore-and-aft direction distance between the rear end of the rear end of described high potential member (23) and described retaining member (16) is larger than the fore-and-aft direction size of described subsidiary engine (35).
4. according to the vehicle electrical storage device described in any one in claim 1～3, it is characterized in that,
Described subsidiary engine (35) is for to carry out cooling fan propeller to described electrical storage device (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-102341 | 2013-05-14 | ||
| JP2013102341A JP6070993B2 (en) | 2013-05-14 | 2013-05-14 | Power storage device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104149721A true CN104149721A (en) | 2014-11-19 |
| CN104149721B CN104149721B (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410204194.7A Active CN104149721B (en) | 2013-05-14 | 2014-05-14 | Vehicle electrical storage device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6070993B2 (en) |
| CN (1) | CN104149721B (en) |
Cited By (1)
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| CN110576812A (en) * | 2018-06-07 | 2019-12-17 | 丰田自动车株式会社 | Mounting structure of storage battery |
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| JP6118381B2 (en) * | 2015-09-30 | 2017-04-19 | 富士重工業株式会社 | Automotive battery |
| JP6794739B2 (en) * | 2016-09-27 | 2020-12-02 | トヨタ自動車株式会社 | Battery pack |
| JP6973030B2 (en) * | 2017-12-21 | 2021-11-24 | トヨタ自動車株式会社 | Electric vehicle |
| JP7480036B2 (en) * | 2018-05-17 | 2024-05-09 | 本田技研工業株式会社 | Battery pack |
| CN113366692A (en) * | 2019-01-30 | 2021-09-07 | 三菱自动车工业株式会社 | Battery cooling structure for vehicle |
| JP7294049B2 (en) * | 2019-10-14 | 2023-06-20 | 株式会社デンソー | battery pack |
| JP7240434B2 (en) * | 2021-03-30 | 2023-03-15 | 本田技研工業株式会社 | electric vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104149721B (en) | 2016-10-19 |
| JP6070993B2 (en) | 2017-02-01 |
| JP2014222640A (en) | 2014-11-27 |
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