CN209617269U - A kind of power battery crash protection structure and electric car - Google Patents
A kind of power battery crash protection structure and electric car Download PDFInfo
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- CN209617269U CN209617269U CN201920212113.6U CN201920212113U CN209617269U CN 209617269 U CN209617269 U CN 209617269U CN 201920212113 U CN201920212113 U CN 201920212113U CN 209617269 U CN209617269 U CN 209617269U
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- subframe
- crossbeam
- longitudinal beam
- vehicle body
- power battery
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Abstract
The utility model discloses a kind of power battery crash protection structures comprising is connected to the front longitudinal beam of electric car and the auxiliary frame structure of vehicle body crossbeam and the battery protection crossbeam for being connected to auxiliary frame structure rear end；Auxiliary frame structure includes the subframe front beam being connected between front longitudinal beam, two subframe longitudinal beams being connected between subframe front beam and vehicle body crossbeam and the rear cross beam of subframe being connected between two subframe longitudinal beams；Battery protection crossbeam is connected to the rear end of subframe longitudinal beam, and its both ends is connected to the stringer adapter of electric car.The protection structure can improve the conducting path for the head-on crash power that subframe is subject to, and prevent vehicle body beam force excessive and fragmentation failure, be conducive to improve passenger protecting performance, reduce power battery risk on fire from explosion.
Description
Technical field
The utility model relates to electric vehicle engineering fields, more particularly to a kind of power battery crash protection structure and electricity
Electrical automobile.
Background technique
With the development of new energy technology, the performance of electric car is constantly promoted, and its environmental pollution is small, receives
The favor of more and more consumers.At the same time, people require the security performance of electric car also higher and higher, and electronic
The security performance of automobile and the chassis structure of electric car are closely related, and still, existing electric automobile frame tectonic sieving is deposited
In place not fully up to expectations, mainly not reasonable to the conduction of head-on crash power, structural stability is bad, cast aluminium material
The impact force that vehicle body crossbeam is born is excessive, the severely deformed or even fragmentation of the excessive generation of vehicle body beam force is easy to cause, thus right
Occupant causes biggish impact.Simultaneously as not reasonable to the conduction of head-on crash power, existing batteries of electric automobile in addition
Protective cradle is only capable of playing certain protective role to battery when scratching, and when head-on crash occurs for electric car, and
Impact force effectively cannot be dispersed and it is avoided to be applied on battery, it is difficult to realize the protection to battery, the battery of electric car exists
By vehicle frame conduction come impact force generate moderate finite deformation when, be easy to cause battery explosion on fire, can further threaten automobile and
The safety of occupant.
Utility model content
In order to solve the problems in above-mentioned background technique, the utility model provides a kind of power battery crash protection knot
Structure can improve the conducting path for the head-on crash power that subframe is subject to, and prevent vehicle body beam force excessive and fragmentation failure,
Be conducive to improve passenger protecting performance, power battery risk on fire from explosion can also be reduced.
Based on this, the one aspect of the utility model provides a kind of power battery crash protection structure, including is connected to
The front longitudinal beam of electric car and the auxiliary frame structure of vehicle body crossbeam and the battery protection for being connected to the auxiliary frame structure rear end
Crossbeam；The auxiliary frame structure include the subframe front beam being connected between front longitudinal beam, two be connected to subframe front beam
Subframe longitudinal beam between vehicle body crossbeam and the rear cross beam of subframe being connected between two subframe longitudinal beams；The electricity
Pond protection crossbeam is connected to the rear end of the subframe longitudinal beam, and its both ends is connected to the stringer adapter of electric car.
Preferably, the battery protection crossbeam includes straightway portion and is connected to straightway portion both ends and extends obliquely upward
Oblique line section portion, oblique line section portion connect with the stringer adapter, behind the straightway portion and the subframe longitudinal beam
End is all connected to the bottom of the vehicle body crossbeam.
Preferably, the stringer adapter has the switching part tiltedly to extend back, after oblique line section portion is oblique
Extend and be connected to the switching part, the straightway portion is connected to the bottom of the rear end of the subframe longitudinal beam.
Preferably, oblique line section portion is equipped with the first fixation hole, and the straightway portion is equipped with the second fixation hole, institute
It states oblique line section portion and connects the stringer adapter by being threaded through the bolt of first fixation hole；The subframe longitudinal beam
Rear end and the vehicle body crossbeam are equipped with the mounting hole opposite with second fixation hole position, the straightway portion and subframe
The rear end of stringer connects the vehicle body crossbeam by the bolt being arranged in second fixation hole and the mounting hole.
Preferably, the battery protection crossbeam, the subframe front beam, the rear cross beam of subframe and described
Subframe longitudinal beam is that steel are made.
Preferably, the front end of the subframe longitudinal beam is welded in the subframe front beam, after the subframe
Beam welding is in the rear side of the subframe longitudinal beam.
Preferably, the subframe front beam and the front longitudinal beam are bolted.
Preferably, the battery protection crossbeam includes upper bending plate and lower bending plate, and the upper bending plate is under
The both ends of bending plate are welded together to form annular cross section.
The another aspect of the utility model also provides a kind of electric car comprising the power electric in above-mentioned technical proposal
Pond crash protection structure.
Compared to the prior art, the utility model has the beneficial effects that:
The power battery crash protection structure and electric car of the utility model, power battery crash protection structure include
Be connected to the front longitudinal beam of electric car and the auxiliary frame structure of vehicle body crossbeam and be connected to auxiliary frame structure rear end battery it is anti-
Protect crossbeam, auxiliary frame structure include the subframe front beam being connected between front longitudinal beam, two be connected to subframe front beam and
Subframe longitudinal beam between vehicle body crossbeam and the rear cross beam of subframe being connected between two subframe longitudinal beams, subframe are vertical
The rear end of beam is connected with battery protection crossbeam, and the both ends of battery protection crossbeam are connected to the stringer adapter of electric car, In
When head-on crash occurs, since the rear end of subframe longitudinal beam is connected to vehicle body crossbeam, while the rear end of subframe longitudinal beam is also connected
In battery protection crossbeam, the impact force that subframe longitudinal beam is subject to is transmitted on battery protection crossbeam and vehicle body crossbeam, then from battery
Protection crossbeam and vehicle body crossbeam are distributed on the stringer adapter and middle channel beam of electric car, are distributed on stringer adapter
Impact force is then transmitted on the sill strip of electric car, is realized and is conducted impact force to threshold and rear vehicle, from there through
Battery protection crossbeam increases a Path of Force Transfer, can mitigate the stress burden of vehicle body crossbeam, effectively prevent vehicle body beam force
Excessive and fragmentation is failed, and is thereby enhanced structural stability, is improved passenger protecting performance, simultaneously as can be by subframe
The impact force being subject to is timely and effective to be conducted, and the deformation and the amount of moving back of subframe can be reduced, so that playing protection is located at secondary vehicle
The effect of the power battery at frame rear reduces power battery risk on fire from explosion.
Detailed description of the invention
Fig. 1 is a kind of bottom schematic view of power battery crash protection structure provided by the embodiment of the utility model；
Fig. 2 is a kind of top view of power battery crash protection structure provided by the embodiment of the utility model；
Fig. 3 is the partial enlarged view of Fig. 1；
Fig. 4 is the conduction schematic diagram of impact force when the vehicle frame of the utility model embodiment is collided；
Fig. 5 is the structural schematic diagram of battery protection crossbeam provided in this embodiment；
Fig. 6 is the schematic cross-section of battery protection crossbeam in Fig. 5；
Fig. 7 is the top view of stringer adapter provided in this embodiment.
Wherein, 1, front longitudinal beam；2, stringer adapter；21, switching part；3, vehicle body crossbeam；4, sill strip；5, middle channel beam；
61, subframe front beam；62, rear cross beam of subframe；63, subframe longitudinal beam；7, battery protection crossbeam；71, straightway portion；711,
Second fixation hole；72, oblique line section portion；721, the first fixation hole；73, upper bending plate；74, lower bending plate；8, anticollision beam assembly；
91, seat front beam；92, seat rear cross beam；100, power battery.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Obviously,
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "front", "rear",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
It should be understood that term " first ", " second " etc. are used for description purposes only, for same type of information is distinguished from each other
It opens, is not understood to indicate or imply relative importance.
Referring to Figure 1 and Fig. 2, it is schematically shown that the power battery crash protection structure of the utility model comprising
Auxiliary frame structure and battery protection crossbeam 7, in the present embodiment, what electric car was oppositely arranged with anticollision beam assembly 8, two
Front longitudinal beam 1, the stringer adapter 2 for being connected to 1 rear end of front longitudinal beam, the vehicle body crossbeam 3 being connected between two stringer adapters 2,
The middle channel beam 5 for being connected to the sill strip 4 in 2 outside of stringer adapter and being connected on vehicle body crossbeam 3, vehicle body crossbeam 3 are casting
Aluminium material.Auxiliary frame structure is connected to the front longitudinal beam 1 and vehicle body crossbeam 3 of electric car, and battery protection crossbeam 7 is connected to subframe
The rear end of structure, wherein auxiliary frame structure includes that subframe front beam 61, two be connected between front longitudinal beam 1 are connected to pair
Subframe longitudinal beam 63 between frame front cross beam 61 and vehicle body crossbeam 3 and the pair being connected between two subframe longitudinal beams 63
Aft cross member 62, the front end of subframe longitudinal beam 63 are connected to subframe front beam 61, and the rear end of subframe longitudinal beam 63 is connected to
Vehicle body crossbeam 3, subframe front beam 61, rear cross beam of subframe 62 and vehicle body crossbeam 3 arrange from front to back, battery protection crossbeam 7
It is connected to the rear end of subframe longitudinal beam 63, and the both ends of battery protection crossbeam 7 are connected to two stringers turn of electric car
Connector 2, the power battery 100 of electric car are set to the rear of battery protection crossbeam 7 and vehicle body crossbeam 3, are specifically connected to door
Sill beam 4 and stringer adapter 2.
Power battery crash protection structure based on above-mentioned technical characteristic, since vehicle body crossbeam 3 is connected to subframe longitudinal beam
63 rear end, battery protection crossbeam 7 are also connected to the rear end of subframe longitudinal beam 63, when a frontal collision occurs, as shown in Figure 4
Impact force conducts schematic diagram, and impact force is applied to first on anticollision beam assembly 8, and impact force is transmitted to by anticollision beam assembly 8 backward
On two front longitudinal beams 1, impact force a part that front longitudinal beam 1 is subject to is distributed on stringer adapter 2, and another part is distributed to secondary vehicle
On frame front beam 61, the impact force being subject to is transmitted on subframe longitudinal beam 63 by subframe front beam 61 again, subframe longitudinal beam 63
Then the impact force being subject to is distributed on vehicle body crossbeam 3 and battery protection crossbeam 7 connected to it, middle channel beam 5 is connected to
Vehicle body crossbeam 3, and the both ends of vehicle body crossbeam 3 are connected to stringer adapter 2, therefore the impact force that vehicle body crossbeam 3 is subject to passes respectively
It is directed in channel beam 5 on stringer adapter 2, battery protection crossbeam 7 has dispersed what a part of conduction of subframe longitudinal beam 63 came
Impact force, since the both ends of battery protection crossbeam 7 are connected to stringer adapter 2, this local collision power is also conducted to
On stringer adapter 2, stringer adapter 2 comes front longitudinal beam 1, vehicle body crossbeam 3 and these three member conducts of battery protection crossbeam 7
Impact force is conducted to sill strip 4, and impact force is transmitted to rear vehicle by sill strip 4 and middle channel.Pass through battery as a result,
The setting for protecting crossbeam 7, increases a Path of Force Transfer, avoids the impact force that subframe longitudinal beam 63 is subject to and be all transmitted to vehicle
On body crossbeam 3, so as to mitigate the stress burden of vehicle body crossbeam 3, effectively prevent 3 stress of vehicle body crossbeam of cast aluminum construction excessive and
Fragmentation failure, thereby enhances structural stability, improves foot areas deformation, passenger protecting performance is improved, simultaneously as can
It is conducted so that the impact force for being subject to subframe is timely and effective, improves the conducting path of impact force, the change of subframe can be reduced
Shape and the amount of moving back play protection power electric so that subframe be prevented to be expressed to the power battery 100 set on 3 rear of vehicle body crossbeam
The effect in pond 100 reduces the risk on fire from explosion by external impacts of power battery 100, further increases electric car safety
Performance.
Specifically, referring to shown in Fig. 3 and Fig. 5, battery protection crossbeam 7 includes straightway portion 71 and oblique line section portion 72, oblique line
Section portion 72 is connected to 71 both ends of straightway portion, and the rear end of subframe longitudinal beam 63 is connected to straightway portion 71, and oblique line section portion 72 is oblique
Upper to extend and connect with stringer adapter 2, the rear end of subframe longitudinal beam 63 is all connected to the bottom of vehicle body crossbeam 3, straightway portion
71 are preferably connected to the bottom of 63 rear end of subframe longitudinal beam, power battery 100 be set to the rear of vehicle body crossbeam 3 and with vehicle body cross
3 height of beam is almost the same, and the installation site in straightway portion 71 is lower than the lower surface of power battery 100, in electric automobile during traveling
It can protect power battery 100 not scratched.Preferably, as shown in fig. 7, stringer adapter 2 has what is tiltedly extended back to turn
Socket part 21, oblique line section portion 72 tiltedly extend back and are connected to switching part 21.In this way, subframe longitudinal beam 63 is transmitted to battery protection cross
Impact force on beam 7, after oblique line section portion 72 is oblique on conduction to switching part 21, due to the switching part 21 of stringer adapter 2
Also it tiltedly extends back, the direction of stringer switching part 21 to the conduction impact force of sill strip 4 is also tiltedly to extend back, with oblique line section portion
The direction of the impact force of 72 conduction is roughly the same, and the setting in oblique line section portion 72 is so that conduction impact force is more smooth backward, favorably
It is timely and effectively dispersed on stringer adapter 2 in the impact force that battery protection crossbeam 7 is subject to, so as to sill strip 4
Power transmission channel is more smooth.Preferably, in the present embodiment, horizontal after battery protection crossbeam 7, subframe front beam 61, subframe
Beam 62 and subframe longitudinal beam 63 are that steel are made, can be to aluminum vehicle body knot by the setting of steel battery protection crossbeam 7
The integrality of structure plays an important role.
More particularly, illustratively, as shown in figure 5, oblique line section portion 72 is equipped with the first fixation hole 721, straightway portion 71
Equipped with the second fixation hole 711, bolt is installed so that oblique line section portion 72 to be bolted on stringer adapter 2 in the first fixation hole 721,
Preferably, oblique line section portion 72 extends along direction equipped with multiple first fixation holes 721, is transferred with improving oblique line section portion 72 and stringer
First 2 switching performance.The rear end of subframe longitudinal beam 63 and vehicle body crossbeam 3 are equipped with mounting hole (not shown), mounting hole with
Second fixation hole, 711 position is opposite, uses mounting hole, vehicle of the bolt on the second fixation hole 711, subframe longitudinal beam 63
Mounting hole on sound crossbeam, can be by straightway portion 71, the rear end of subframe longitudinal beam 63 and vehicle body the crossbeam fixed company of 3 three components
It is connected to together, and straightway portion 71 is located at the bottom of 63 rear end of subframe longitudinal beam, the rear end of subframe longitudinal beam 63 is located at vehicle body
The bottom of crossbeam 3.
The battery protection crossbeam 7 of the present embodiment can be an integral molding structure, or be fixedly connected after separately formed
Structure together, it is preferable that in order to improve stock utilization, the battery protection crossbeam 7 in this example is separate structure, referring to figure
Shown in 5 and Fig. 6, specifically carry out welding to form cricoid section at its both ends by upper bending plate 73 and lower bending plate 74,
Press formability is good, and welding procedure is simpler.It is appreciated that two panels bending plate up and down therein includes 71 He of straightway portion
Oblique line section portion 72.
In the present embodiment, the front end of subframe longitudinal beam 63 is welded in subframe front beam 61, and rear cross beam of subframe 62 welds
It is connected to the rear side of subframe longitudinal beam 63.Preferably, the rear end of front longitudinal beam 1 is plugged in stringer adapter 2, and passes through structure glue and spiral shell
It tethers and connects, front end and the anticollision beam assembly 8 of front longitudinal beam 1 are bolted, and front longitudinal beam 1 and subframe front beam 61 pass through bolt
Connection.Further, stringer adapter 2 and vehicle body crossbeam 3 pass through bolt and structure glue connection, stringer adapter 2 and sill strip 4
Also by bolt and structure glue connection, middle channel beam 5 is by structure glue and is bolted in the top of vehicle body crossbeam 3.Each portion
It is fixed between part using such connection type, the stability of body structure can be improved.Moreover, being set to stringer adapter
2 and battery protection crossbeam 7 on bolt power battery 100 can be effectively ensured do not bumped against, to further protect power battery
Invading for 100 front end of power battery can be effectively reduced by the setting of battery protection crossbeam 7 by experimental verification in 100 safety
Enter amount.In addition, the power battery crash protection structure is connected by screw bolts with vehicle body, it is also convenient for crash protection structural repair more
It changes.
As preferred embodiment, cross after seat front beam 91 and seat is connected between sill strip 4 and middle channel beam 5
Beam 92, the both ends of seat front beam 91 are riveted on sill strip 4 and middle channel beam 5, and the both ends of seat rear cross beam 92 are riveted on threshold
Beam 4 and middle channel beam 5 are connected for example, by using SPR (Self Piercing Rivet, self-piercing riveting) technique.
To realize that identical purpose, the utility model embodiment additionally provide a kind of electric car, electric car configuration
There is power battery crash protection structure provided by the embodiment of the utility model.Because of power battery provided by the embodiment of the utility model
Crash protection structure can achieve said effect, and the electric car configured with the power battery crash protection structure should also have phase
The technical effect answered, details are not described herein.
It should be noted that in the description of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The method and apparatus of the not detailed description of the utility model are the prior art, are also repeated no more herein.
In conclusion power battery crash protection structure provided by the utility model increases a Path of Force Transfer, can have
The head-on crash power that subframe is subject to is transmitted on threshold and middle channel by effect ground, prevents vehicle body beam force excessive and fragmentation mistake
Effect is conducive to improve passenger protecting performance, can also reduce the intrusion volume of power battery front end, to reduce power battery explosion
Risk on fire can protect power battery in electric car row moreover, battery protection crossbeam is lower than the lower surface of power battery
Into not scratched in the process.Therefore this power battery crash protection structure application and popularization value with higher.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these improve and
Replacement also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of power battery crash protection structure, which is characterized in that front longitudinal beam and vehicle body including being connected to electric car are horizontal
The auxiliary frame structure of beam and the battery protection crossbeam for being connected to the auxiliary frame structure rear end；The auxiliary frame structure includes connecting
Subframe front beam, two subframes being connected between subframe front beam and vehicle body crossbeam being connected between front longitudinal beam are vertical
Beam and the rear cross beam of subframe being connected between two subframe longitudinal beams；The battery protection crossbeam is connected to the secondary vehicle
The rear end of frame stringer, and its both ends is connected to the stringer adapter of electric car.
2. power battery crash protection structure according to claim 1, which is characterized in that the battery protection crossbeam includes
Straightway portion and the oblique line section portion for being connected to straightway portion both ends and extending obliquely upward, oblique line section portion and the stringer
The rear end of adapter connection, the straightway portion and the subframe longitudinal beam is all connected to the bottom of the vehicle body crossbeam.
3. power battery crash protection structure according to claim 2, which is characterized in that the stringer adapter has oblique
The switching part to extend back, oblique line section portion tiltedly extend back and are connected to the switching part, and the straightway portion is connected to
The bottom of the rear end of the subframe longitudinal beam.
4. power battery crash protection structure according to claim 2, which is characterized in that oblique line section portion is equipped with first
Fixation hole, the straightway portion are equipped with the second fixation hole, and oblique line section portion is by being threaded through the bolt of first fixation hole
It is connected to the stringer adapter；
The rear end of the subframe longitudinal beam and the vehicle body crossbeam are equipped with the mounting hole opposite with second fixation hole position,
The straightway portion and the rear end of subframe longitudinal beam are connected by the bolt being arranged in second fixation hole and the mounting hole
It is connected to the vehicle body crossbeam.
5. power battery crash protection structure according to any one of claims 1 to 4, which is characterized in that the battery is anti-
Protecting crossbeam, the subframe front beam, the rear cross beam of subframe and the subframe longitudinal beam is that steel are made.
6. power battery crash protection structure according to claim 1, which is characterized in that the front end of the subframe longitudinal beam
It is welded in the subframe front beam, the rear cross beam of subframe is welded in the rear side of the subframe longitudinal beam.
7. power battery crash protection structure according to claim 1, which is characterized in that the subframe front beam and institute
Front longitudinal beam is stated to be bolted.
8. power battery crash protection structure according to claim 1, which is characterized in that the battery protection crossbeam includes
The both ends of upper bending plate and lower bending plate, the upper bending plate and lower bending plate are welded together to form annular cross section.
9. a kind of electric car, which is characterized in that the electric car includes the described in any item power electrics of claim 1 to 8
Pond crash protection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920212113.6U CN209617269U (en) | 2019-02-18 | 2019-02-18 | A kind of power battery crash protection structure and electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920212113.6U CN209617269U (en) | 2019-02-18 | 2019-02-18 | A kind of power battery crash protection structure and electric car |
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| CN209617269U true CN209617269U (en) | 2019-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548113A (en) * | 2020-04-24 | 2021-10-26 | 本特勒汽车有限公司 | Rear axle beam assembly of electric automobile |
| CN113859364A (en) * | 2021-11-17 | 2021-12-31 | 浙江吉利控股集团有限公司 | Electric automobile |
-
2019
- 2019-02-18 CN CN201920212113.6U patent/CN209617269U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548113A (en) * | 2020-04-24 | 2021-10-26 | 本特勒汽车有限公司 | Rear axle beam assembly of electric automobile |
| CN113859364A (en) * | 2021-11-17 | 2021-12-31 | 浙江吉利控股集团有限公司 | Electric automobile |
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