CN107571913B - Auxiliary frame assembly for electric automobile and electric automobile - Google Patents
Auxiliary frame assembly for electric automobile and electric automobile Download PDFInfo
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- CN107571913B CN107571913B CN201610518830.2A CN201610518830A CN107571913B CN 107571913 B CN107571913 B CN 107571913B CN 201610518830 A CN201610518830 A CN 201610518830A CN 107571913 B CN107571913 B CN 107571913B
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Abstract
The auxiliary frame assembly for the electric automobile comprises an auxiliary frame body, wherein a mounting structure used for being connected with an automobile body is arranged on the auxiliary frame body, the mounting structure is provided with a mounting portion and a boss, the mounting portion is used for being connected with the automobile body, and the boss is higher than the mounting portion in the direction of the automobile body along the direction perpendicular to the direction from the automobile head to the automobile tail; the lug boss is used for abutting against the automobile body in the direction from the automobile head to the automobile tail. When the auxiliary frame assembly is mounted on the body of an electric automobile, the auxiliary frame body is limited by the boss to move towards the battery pack under the action of external force when the electric automobile is subjected to frontal collision. The auxiliary frame is prevented from colliding with the battery pack mounted on the vehicle body, so that the safety and stability of the battery pack are guaranteed.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an auxiliary frame assembly for an electric automobile and the electric automobile.
Background
At present, due to the shortage of petroleum resources, the price of oil is continuously increased, and new energy automobiles are produced. The new energy automobile grows up and becomes one of the important trends of automobile development, and especially the pure electric automobile really realizes zero emission. As a new thing, the electric safety of the new energy automobile is always concerned highly, the high-voltage battery pack is a power source of the pure electric automobile, and the volume of the high-voltage battery pack in the pure electric automobile is large. Generally, the high voltage battery pack is disposed under a vehicle body (a surface of the vehicle body facing the ground) and is fixed by means of a plurality of mounting points with the vehicle body.
When the vehicle has a frontal collision, the auxiliary frame generates large backward displacement when the auxiliary frame receives transient impact force under the working condition of the frontal collision, and the auxiliary frame has the risk of impacting the high-voltage battery pack.
The high-voltage battery pack is internally composed of a plurality of battery modules, and high-voltage wires are arranged on the periphery of the high-voltage battery pack. The battery module and the high-voltage wire are easy to cause the failure of the insulation resistance in the module after being impacted, so that electric leakage is caused, and even the risk of fire, explosion and the like exists.
Disclosure of Invention
The invention solves the problem that the auxiliary frame can impact a high-voltage battery pack when the auxiliary frame is subjected to frontal collision.
In order to solve the problems, the invention provides an auxiliary frame assembly for an electric automobile, which comprises an auxiliary frame body, wherein an installation structure used for being connected with an automobile body is arranged on the auxiliary frame body, the installation structure is provided with an installation part and a boss, the installation part is used for being connected with the automobile body, and the boss is higher than the installation part in the direction of the automobile body along the direction perpendicular to the direction from the automobile head to the automobile tail; the lug boss is used for abutting against the automobile body in the direction from the automobile head to the automobile tail.
Optionally, the mounting portion has a first surface for facing the vehicle body, the boss has a second surface for facing the vehicle body, and the first surface of the mounting portion and the second surface of the boss are disposed at an angle.
Optionally, the second surface of the boss is planar.
Optionally, the distance that the boss is higher than the mounting part is 80mm-90 mm.
Optionally, an included angle between the first surface of the mounting portion and the second surface of the boss is 90 ° to 140 °.
Optionally, the mounting portion is connected to the vehicle body by a bolt.
The present invention also provides an electric vehicle, comprising:
the subframe assembly of any of the above;
the surface of the vehicle body facing the auxiliary frame body sequentially comprises a first surface, a second surface and a third surface along the direction from the head to the tail of the vehicle, and the third surface of the vehicle body is provided with a battery pack; the first surface and the second surface of the vehicle body are arranged at an angle, and the second surface of the vehicle body is closer to the auxiliary frame body than the first surface of the vehicle body;
the mounting portion is connected with the second surface of the automobile body, and the boss is abutted to the first surface of the automobile body.
Optionally, the projection of the boss to the first surface of the vehicle body partially covers or completely covers the first surface of the vehicle body.
Optionally, the mounting structure is spaced apart from the battery pack by 80mm to 110mm in a direction from a head of the vehicle to a tail of the vehicle.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the auxiliary frame assembly for the electric automobile comprises an auxiliary frame body, wherein a mounting structure used for being connected with an automobile body is arranged on the auxiliary frame body. The mounting structure of the invention is provided with a mounting part and a boss, wherein the mounting part is used for being connected with a vehicle body, and the boss is higher than the mounting part in the direction of the vehicle body along the direction vertical to the vehicle head to the vehicle tail; the lug boss is used for propping against the automobile body along the direction from the automobile head to the automobile tail.
After the auxiliary frame assembly is installed on the body of the electric automobile, a certain distance is reserved between the installation structure of the auxiliary frame assembly and a battery pack installed on the body of the electric automobile along the direction from the automobile head to the automobile tail. When electric automobile received frontal collision, the sub vehicle frame body had the trend of backward displacement under the effect of the striking force, because the boss in the mounting structure of sub vehicle frame offsets with the automobile body in the direction of locomotive to the rear of a vehicle, the boss restriction sub vehicle frame body moves towards the group battery under the exogenic action. The auxiliary frame is prevented from colliding with the battery pack mounted on the vehicle body, so that the safety and stability of the battery pack are guaranteed.
Drawings
FIG. 1 is a schematic view of a prior art assembly relationship between a vehicle body and a sub-frame at a main viewing angle;
FIG. 2 is a schematic view of a prior art subframe moving in a direction under an external force, illustrating the subframe moving toward a high voltage battery pack;
FIG. 3 is a schematic view of the assembly relationship between the vehicle body and the auxiliary frame in the main view angle in the embodiment of the invention;
FIG. 4 is a front view of the subframe body according to the embodiment of the invention;
FIG. 5 is a schematic diagram of the subframe moving under external force according to an embodiment of the present invention, showing the subframe not moving toward the high voltage battery pack.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, in the prior art, a subframe 1 is mounted on a body 2 of an electric vehicle through bolts 5, a battery pack 3 is further mounted on the body 2 along a direction from a vehicle head to a vehicle tail, and a high-voltage line 4 is further disposed around the battery pack 3.
Referring to fig. 2, when the electric vehicle is impacted, the subframe 1 receives a large impact force, and when the impact force exceeds the torque between the bolts 5 and the vehicle body 2, the bolts 5 are detached. Since the subframe 1 is almost parallel to the vehicle body 2, the subframe 1 is forced to move toward the battery pack 3 (direction C in fig. 2, i.e., the direction from the vehicle head to the vehicle tail) due to inertia, and collides with the high-voltage line 4. The battery pack 3 and the high-voltage wire 4 are easy to cause the insulating resistance inside the module to lose efficacy after being impacted, so that electric leakage is caused, and even risks such as fire and explosion exist.
In order to solve the above technical problems, an embodiment of the present invention provides a subframe assembly for an electric vehicle, referring to fig. 3, including a subframe body 10, in fig. 3, only a structure of a portion of the subframe body 10 for connecting with a vehicle body 20 is shown, and a direction a in the drawing refers to a vehicle head direction and a direction B in the drawing refers to a vehicle tail direction. In the present embodiment, the subframe body 10 is provided with a mounting structure for connection to the vehicle body 20, and the mounting structure has a mounting portion 11 and a boss 12. The mounting portion 11 is used for being connected with the vehicle body 20, a bolt hole is formed in the vehicle body 20, a bolt hole is also formed in the mounting portion 11 at a corresponding position, and the mounting portion 11 is connected with the vehicle body 20 through a bolt 40. The boss 12 is higher than the mounting portion 11 in a direction perpendicular to a direction from a head to a tail of the automobile (i.e. a height direction), and the distance from the boss 12 to the mounting portion 11 is H in fig. 3; the boss 12 is adapted to abut against the vehicle body 20 in a direction from the front to the rear of the vehicle.
When the subframe assembly of the present invention is mounted on the body of the electric vehicle, the mounting structure of the subframe assembly is spaced apart from the battery pack 30 mounted on the body 20 in the direction from the front to the rear (direction from a to B in fig. 3, i.e., the vehicle length direction). When the electric vehicle is subjected to a frontal collision, the subframe body 10 tends to displace backward under the action of the impact force, and since the boss 12 in the mounting structure of the subframe abuts against the vehicle body 20 in the direction from the vehicle head to the vehicle tail, the boss 12 restricts the subframe body 10 from moving toward the battery pack under the action of an external force. In the direction from the front to the rear, the body 20 blocks the boss 12, and the subframe body 10 is blocked, so that the subframe is prevented from colliding with the battery pack 30 and the high-voltage line 31 mounted on the body 20, and the safety and stability of the battery pack are ensured.
With continued reference to fig. 4, the mounting portion 11 in this embodiment has a first surface 11a for facing the vehicle body 20, the boss 12 has a second surface 12a for facing the vehicle body 20, and the first surface 11a of the mounting portion 11 and the second surface 12a of the boss 12 are disposed at an angle. In the present embodiment, the angle between the first surface 11a and the second surface 12a of the boss 12 is 90 ° to 140 °, including 90 ° and 140 °. This corresponds to providing a slope (i.e., the second surface 12a) on the subframe body 10. The second surface 12a of the boss 12 in the present embodiment is a flat surface, but in other embodiments, it may not be a flat surface, such as a curved surface, as long as it can abut against the vehicle body 20.
In this embodiment, referring to fig. 5, an embodiment of the present invention further provides an automobile, including: the surface of the vehicle body 20 facing the subframe body 10 sequentially comprises a first surface 21, a second surface 22 and a third surface 23 along the direction from the head to the tail of the vehicle, and the third surface 23 of the vehicle body 20 is provided with a battery pack 30; the first surface 21 and the second surface 22 of the vehicle body 20 are disposed at an angle, and the second surface 22 of the vehicle body 20 is closer to the subframe body 10 than the first surface 21 of the vehicle body 20. It can be understood that: the second surface 22 of the vehicle body 20 is almost horizontally arranged (parallel to the horizontal ground), and the first surface 21 is bent back to the subframe body 10; it is also understood that the first surface 21 of the body 20 is a sloped surface.
In the present embodiment, the mounting portion 11 is connected to the second surface 22 of the vehicle body 20, that is, the first surface 11a of the mounting portion 11 is provided with a bolt hole, the second surface 22 of the vehicle body 20 is provided with a bolt hole, and the mounting portion 11 is connected to the second surface 22 of the vehicle body 20 by a bolt. The boss 12 abuts against the first surface 21 of the vehicle body 20, that is, the second surface 12a of the boss 12 abuts against and abuts against the first surface 21 of the vehicle body 20, and the second surface 12a of the boss 12 and the first surface 21 of the vehicle body 20 may be arranged in parallel or not.
The abutment of the boss 12 against the first surface 21 of the body 20 can also be understood as: the projection of the boss 12 onto the first surface 21 of the vehicle body 20 partially covers or completely covers the first surface 21 of the vehicle body 20.
In this embodiment, the mounting structure is spaced apart from the battery pack 30 by 80mm to 110mm, including 80mm and 110mm, in the direction from the front of the vehicle to the rear of the vehicle. The high voltage line 30 is disposed at the periphery of the battery pack 30.
Referring to fig. 5 in conjunction with fig. 3 and 4, when the electric vehicle is involved in a frontal collision, the subframe body is subjected to an impact force, and tends to be displaced backward by inertia. However, since the boss 12 is provided on the subframe body 10, the second surface 12a of the boss 12 is a slope and abuts against the slope first surface 21 of the vehicle body, the boss 12 restricts the subframe body 10 from moving in the horizontal direction toward the battery pack 30 by an external force, that is, the subframe 10 is restricted from moving in the horizontal direction.
The subframe body 10 has a certain weight, and the second surface 12a of the boss 12 of the subframe body 10 moves obliquely along the first surface 21 of the vehicle body 20 under the inertial force and the gravity, and the direction D in fig. 5 is a direction parallel to the first surface 21. Corresponding to the change of the moving direction of the subframe body 10 from the parallel movement (indicated by direction C in fig. 2) to the oblique movement (indicated by direction D in fig. 5) in the prior art, the moving direction of the subframe body 10 is changed to avoid the collision with the battery pack 30 and the high-voltage line 31 located in the horizontal direction of the subframe, so that the safety and stability of the battery pack are ensured.
It should be noted that, in the present embodiment, the boss 12 higher than the mounting portion 112 is provided, so that the moving direction of the subframe body 10 is changed. And since the second surface 12a of the boss 12 and the first surface 21 of the vehicle body 20 are both inclined surfaces, the sub-frame body 10 moves obliquely in the direction of the external force. The distance H of the boss 12 from the mounting portion 11 determines the degree of the oblique movement of the subframe body 10, because if H is 0, the moving direction of the subframe body 10 under the action of the external force is still parallel to the moving direction of the subframe body 10, which is equivalent to no boss 12 provided on the subframe body 10. If H is too small, the body 20 has a small ability to block the boss 12, and the subframe body 10 initially moves only a little distance in the oblique direction under the external force, and then there is a risk of striking the battery pack 30 and the high-voltage line 31 under the large impact force.
Therefore, in order to ensure that the subframe body 10 can move obliquely as much as possible under the action of external force, in the embodiment, the distance H between the boss 12 and the mounting portion 11 is 80mm to 90mm, including 80mm and 90 mm. The distance H that the boss 12 is higher than the mounting portion 11 cannot exceed the height of the first surface 21 of the vehicle body 20, and the maximum value of the distance H can be understood as: the projection of the second surface 12a of the boss 12 to the first surface 21 of the vehicle body 20 completely covers the first surface 21 of the vehicle body 20.
Within this range, the sub-frame can be prevented from being collided with the battery pack mounted on the vehicle body, so that the safety and stability of the battery pack can be ensured.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. An auxiliary frame assembly for an electric automobile is characterized by comprising an auxiliary frame body, wherein the auxiliary frame body is provided with a mounting structure used for being connected with an automobile body,
the mounting structure is provided with a mounting part and a boss, the mounting part is used for being connected with the automobile body, and the boss is higher than the mounting part in the direction of the automobile body along the direction perpendicular to the direction from the automobile head to the automobile tail; the lug boss is used for abutting against the automobile body in the direction from the automobile head to the automobile tail;
the installation department has and is used for facing the first surface of automobile body, the boss has and is used for facing the second surface of automobile body, the first surface of installation department with the second surface of boss is the angle setting.
2. The subframe assembly of claim 1 wherein said second surface of said boss is planar.
3. The subframe assembly of claim 1 wherein said boss is spaced from said mounting portion by a distance of between about 80mm and about 90 mm.
4. The subframe assembly of claim 1 wherein said first surface of said mounting portion and said second surface of said boss define an included angle of between 90 ° and 140 °.
5. The subframe assembly of claim 1 wherein said mounting portion is bolted to said body.
6. An electric vehicle, comprising:
the subframe assembly of any one of claims 1-5;
the surface of the vehicle body facing the auxiliary frame body sequentially comprises a first surface, a second surface and a third surface along the direction from the head to the tail of the vehicle, and the third surface of the vehicle body is provided with a battery pack; the first surface and the second surface of the vehicle body are arranged at an angle, and the second surface of the vehicle body is closer to the auxiliary frame body than the first surface of the vehicle body;
the mounting portion is connected with the second surface of the automobile body, and the boss is abutted to the first surface of the automobile body.
7. The electric vehicle of claim 6, characterized in that the projection of the boss to the first surface of the vehicle body partially covers or completely covers the first surface of the vehicle body.
8. The electric vehicle of claim 6, wherein the mounting structure is spaced 80mm-110mm from the battery pack in a direction from a front of the vehicle to a rear of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518830.2A CN107571913B (en) | 2016-07-04 | 2016-07-04 | Auxiliary frame assembly for electric automobile and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518830.2A CN107571913B (en) | 2016-07-04 | 2016-07-04 | Auxiliary frame assembly for electric automobile and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107571913A CN107571913A (en) | 2018-01-12 |
| CN107571913B true CN107571913B (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610518830.2A Active CN107571913B (en) | 2016-07-04 | 2016-07-04 | Auxiliary frame assembly for electric automobile and electric automobile |
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| CN (1) | CN107571913B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018222457A1 (en) * | 2018-12-20 | 2020-06-25 | Audi Ag | Contactless charging device for a motor vehicle and motor vehicle |
| CN111703504B (en) * | 2019-03-18 | 2022-03-11 | 上海汽车集团股份有限公司 | Vehicle and main and auxiliary double-longitudinal-beam connecting mechanism thereof |
| CN111661160B (en) * | 2020-06-16 | 2021-07-16 | 浙江联控技术有限公司 | Automobile front overhang framework |
| CN217994540U (en) * | 2022-03-25 | 2022-12-09 | 北京车和家汽车科技有限公司 | Vehicle body steering assembly and vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010137149A1 (en) * | 2009-05-28 | 2010-12-02 | トヨタ自動車株式会社 | Fuel cell system, and vehicle |
| JP5982924B2 (en) * | 2012-03-26 | 2016-08-31 | マツダ株式会社 | Subframe structure of automobile |
| US9045172B2 (en) * | 2013-07-25 | 2015-06-02 | Ford Global Technologies, Llc | Powertrain catcher bracket |
| CN203651909U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Unitary construction body with auxiliary frame |
| CN203766880U (en) * | 2014-03-11 | 2014-08-13 | 上海通用汽车有限公司 | Auxiliary frame with retaining portion |
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| CN107571913A (en) | 2018-01-12 |
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