Motor protection structure, vehicle auxiliary frame system and vehicle

Abstract

The invention discloses a motor protection structure, a vehicle auxiliary frame system and a vehicle, and belongs to the technical field of vehicles. The motor protection structure comprises a first supporting structure and a first assembling part arranged on the first supporting structure, and the first supporting structure comprises a first hollow cavity and a shell defining the first hollow cavity; the length direction of the shell defining the first hollow cavity extends in the length direction of a rear auxiliary frame of the vehicle. Under the condition that the first assembling part is fixedly connected to the rear auxiliary frame, the shell defining the first hollow cavity and the rear auxiliary frame define an isolation space for containing a motor. After collision occurs, impact force generated by the collision is absorbed, so that motor damage caused by the collision is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a motor protection structure, a vehicle subframe system and a vehicle. Background Art

[0002] In order to enable the motor in the electric vehicle to provide power to the components on the electric vehicle more conveniently and reduce the impact of the motor noise and the space occupied by the motor on the electric vehicle, the motor used in the electric vehicle is currently installed on the subframe of the electric vehicle. In particular, for rear-drive electric vehicles, the motor will be installed on the rear subframe of the electric vehicle. However, since the rear subframe of the electric vehicle cannot completely wrap the motor, when the vehicle collides or passes by protruding hard objects on the road, such as stones, curbs, etc., it is easy to cause damage to the motor on the rear subframe. Summary of the invention

[0003] In view of this, the present invention provides a motor protection structure, a vehicle subframe system and a vehicle. The motor protection structure can wrap the motor installed on the rear subframe of the vehicle and absorb the impact force generated by the collision after a collision to avoid damage to the motor caused by the collision.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a motor protection structure, comprising: a first support structure and a first assembly portion disposed on the first support structure, wherein:

[0006] The first supporting structure includes a first hollow cavity and a shell surrounding the first hollow cavity;

[0007] The length direction of the shell surrounding the first hollow cavity extends along the length direction of the rear subframe of the vehicle;

[0008] When the first assembly portion is fixedly connected to the rear sub-frame, the shell surrounding the first hollow cavity and the rear sub-frame surround an isolation space for accommodating the motor.

[0009] Optionally, the cross section of the shell surrounding the first hollow cavity is an L-shaped structure, wherein:

[0010] When the first assembly portion is fixedly connected to the rear subframe of the vehicle, the upper end of the L-shaped structure is fixed to the side of the rear subframe, and the lower end of the L-shaped structure extends to below the rear subframe.

[0011] Optionally, the first supporting structure further includes reinforcing ribs arranged in the first hollow cavity.

[0012] Optionally, the first supporting structure includes: a first buffer shell, a second buffer shell and a connecting shell, wherein:

[0013] The connecting shell is located between the first buffer shell and the second buffer shell, and the cross-sections of the connecting shell, the first buffer shell and the second buffer shell form an L-shaped structure;

[0014] The first buffer housing is fixed to a side surface of the rear subframe;

[0015] At least one of the connecting shell, the first buffer shell, and the second buffer shell is provided with the first hollow cavity.

[0016] Optionally, the first supporting structure is made of aluminum extruded profile.

[0017] Optionally, the connecting shell, the first buffer shell and the second buffer shell are integrally formed.

[0018] Optionally, a first support reinforcement plate is provided at the connection position between the connection shell and the first buffer shell, wherein:

[0019] The connecting shell, the first buffer shell and the first supporting reinforcement plate are integrally formed.

[0020] Optionally, a second support reinforcement plate is provided at the connection position between the connection shell and the second buffer shell, wherein:

[0021] The connecting shell, the second buffer shell and the second supporting reinforcement plate are integrally formed.

[0022] Optionally, a plane where the inner surface of the second buffer shell is located is lower than a plane where the lower side of the motor is located.

[0023] Optionally, the motor protection structure further comprises: a second assembly portion provided on the second buffer housing, wherein:

[0024] The second assembly portion is used to fix and connect the bottom protection plate.

[0025] Optionally, the motor protection structure further comprises: a second supporting structure, wherein:

[0026] The second supporting structure is fixed to the inner surface of the shell surrounding the first hollow cavity;

[0027] The second supporting structure has a second hollow cavity or the second supporting structure and the inner surface of the shell enclose a second hollow cavity.

[0028] Optionally, in the case where the cross section of the shell surrounding the first hollow cavity is an L-shaped structure,

[0029] The cross section of the second supporting structure is a triangle, and one angle of the triangle matches the inner angle of the L-shaped structure.

[0030] Optionally, the second supporting structure is made of aluminum extruded profile.

[0031] Optionally, there is a gap between the second supporting structure and the motor.

[0032] Optionally, there is a gap between the first supporting structure and the motor.

[0033] In a second aspect, an embodiment of the present invention provides a vehicle subframe system, comprising: a rear subframe and a motor protection structure provided by the embodiment of the first aspect, wherein:

[0034] The motor protection structure is fixedly connected to the rear sub-frame and encloses an isolation space for accommodating the motor together with the rear sub-frame.

[0035] In a third aspect, an embodiment of the present invention provides a vehicle, comprising: the vehicle subframe system provided by the embodiment of the second aspect above.

[0036] The technical solution of the above invention has the following advantages or beneficial effects:

[0037] The motor protection structure provided by the embodiment of the present invention includes a first assembly portion arranged on the first supporting structure and fixedly connected to the rear sub-frame, so that the shell surrounding the first hollow cavity included in the first supporting structure and the rear sub-frame surround an isolation space for accommodating the motor, so that the shell and the rear sub-frame are combined to protect the motor. In addition, since the first supporting structure includes the first hollow cavity and the shell surrounding the first hollow cavity, the shell has the characteristic of collapsing and absorbing energy. Then, after being hit, the shell resists the impact force generated by the impact, and the shell can absorb the energy generated by the impact to avoid damage to the motor caused by the collision.

[0038] In addition, the motor protection structure protects the motor, making it less likely to be damaged, reducing the safety risks of the motor, and effectively reducing the maintenance costs of the motor and the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the relative relationship between the motor and the rear subframe of the vehicle according to the prior art;

[0040] Figure 2 is a structural schematic diagram of the relative relationship between the motor protection structure, the rear sub-frame and the motor provided in one embodiment of the present invention;

[0041] Figure 3 is a front view of a motor protection structure provided according to an embodiment of the present invention;

[0042] Figure 4 is a first side view of a motor protection structure provided according to an embodiment of the present invention;

[0043] Figure 5 1 is a second side view of the motor protection structure provided according to an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 10-motor protection structure; 11-first supporting structure; 111-first hollow cavity; 112-first buffer shell; 113-second buffer shell; 114-connecting shell; 115-first supporting reinforcement plate; 116-second supporting reinforcement plate; 12-first assembly part; 13-second assembly part; 14-second supporting structure; 141-second hollow cavity; 20-vehicle subframe system; 21-rear subframe; 30-motor. DETAILED DESCRIPTION

[0046] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0047] It should be pointed out that the embodiments of the present invention and the technical features therein may be combined with each other without conflict.

[0048] In addition, the terms "first", "second", etc. included in the embodiments of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific number or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing objects with the same attributes when describing them in the embodiments of the present invention.

[0049] The vehicle involved in the embodiment of the present invention may be a hybrid vehicle using an engine as a power source, using an engine and an electric motor as power sources, or an electric vehicle using an electric motor as a power source.

[0050] Figure 1 The following is a schematic diagram of the relative relationship between the rear subframe 21 and the motor 30 in the prior art. Figure 1 It can be seen that in the prior art, part of the structure of the motor 30 is not wrapped by the rear subframe 21. In particular, the unwrapped area of ​​the lower half of the motor 30 is easily damaged by protruding hard objects on the road surface, such as stones, curbs, etc.

[0051] In order to solve the problem in the prior art that the lower half of the motor 30 installed on the rear subframe 21 is not wrapped, which easily causes damage to the motor 30, an embodiment of the present invention provides a motor protection structure, a vehicle subframe system and a vehicle.

[0052] in, Figure 2 A structural schematic diagram showing the relative relationship between the motor protection structure 10 provided by an embodiment of the present invention, the rear sub-frame 21 and the motor 30; Figure 3 A front view of a motor protection structure 10 provided in an embodiment of the present invention is shown; Figure 4 A first side view of a motor protection structure 10 provided by an embodiment of the present invention is shown; Figure 5 A second side view of the motor protection structure 10 provided by the embodiment of the present invention is shown.

[0053] like Figures 2 to 5 As shown, the motor protection structure 10 provided in the embodiment of the present invention may include: a first support structure 11 and a first assembly portion 12 arranged on the first support structure 11, wherein:

[0054] The first supporting structure 11 includes a first hollow cavity 111 and a shell surrounding the first hollow cavity 111;

[0055] The length direction of the shell surrounding the first hollow cavity 111 extends along the length direction of the rear subframe 21 of the vehicle;

[0056] When the first assembly portion 12 is fixedly connected to the rear sub-frame 21 , the housing surrounding the first hollow cavity 111 and the rear sub-frame 21 surround an isolated space for accommodating the motor 30 .

[0057] Among them, the shell surrounding the first hollow cavity 111 has the characteristic of collapse and energy absorption due to the existence of the first cavity 111, that is, after the shell is collided, it collapses into the first hollow cavity to achieve the effect of buffering and energy absorption, so as to resolve the impact force caused by the collision and achieve the purpose of protection.

[0058] The first assembly portion 12 may be an assembly hole such as a screw assembly hole, or may be a welding point (the welding point is formed by welding material and is fixedly connected to the rear subframe 21 by welding).

[0059] The length direction of the shell surrounding the first hollow cavity 111 and the length direction of the rear sub-frame 21 of the vehicle can be as follows: Figure 2 The D direction shown in the figure is to extend along the length direction of the rear sub-frame 21 of the vehicle by setting the length direction of the housing so that the housing can be Figure 2 The motor 30 is wrapped in the D direction as shown to better protect the motor 30.

[0060] The isolation space enclosed by the shell surrounding the first hollow cavity 111 and the rear sub-frame 21 is mainly used to isolate the collision from the side (for the rear sub-frame, the side refers to the rear side of the rear sub-frame 21) and the collision from the protrusions below.

[0061] The motor 30 involved in the embodiment of the present invention generally refers to a rear motor installed on the rear sub-frame 21 .

[0062] against Figure 1 The provided motor protection structure includes a first assembly portion arranged on a first supporting structure and fixedly connected to a rear sub-frame, so that a shell enclosing a first hollow cavity included in the first supporting structure and the rear sub-frame enclose an isolation space for accommodating the motor, so that the shell and the rear sub-frame are combined to protect the motor. In addition, since the first supporting structure includes the first hollow cavity and the shell enclosing the first hollow cavity, the shell has the characteristic of collapsing and absorbing energy. Then, after being hit, the shell resists the impact force generated by the impact, and the shell can absorb the energy generated by the impact to avoid damage to the motor caused by the collision.

[0063] In addition, the motor protection structure protects the motor, making it less likely to be damaged, reducing the safety risks of the motor, and effectively reducing the maintenance costs of the motor and the vehicle.

[0064] Furthermore, if Figures 3 to 5 As shown, the cross section of the shell surrounding the first hollow cavity 111 is an L-shaped structure, wherein:

[0065] When the first assembly portion 12 is fixedly connected to the rear subframe 21 of the vehicle, the upper end of the L-shaped structure is fixed to the side of the rear subframe 21 , and the lower end of the L-shaped structure extends to below the rear subframe 21 .

[0066] The side surface of the rear sub-frame 21 refers to the rear side of the rear sub-frame.

[0067] The L-shaped structure can achieve the purpose of synchronously protecting the side and bottom of the rear subframe 21, and can better isolate the area of ​​the motor 30 that is prone to collision.

[0068] Furthermore, the first support structure 11 further includes reinforcing ribs disposed in the first hollow cavity 111. The design of the reinforcing ribs can make the first support structure 11 have better support performance and impact resistance, and help improve the collapse energy absorption effect of the first support structure 11.

[0069] The first support structure 11 may be made of aluminum extruded profiles to effectively control the cost of the first support structure 11 while enabling the first support structure 11 to have a better collapse energy absorption effect.

[0070] Further, in an embodiment of the present invention, if Figures 3 to 5 As shown, the first supporting structure 11 may include: a first buffer shell 112, a second buffer shell 113 and a connecting shell 114, wherein:

[0071] The connecting shell 114 is located between the first buffer shell 112 and the second buffer shell 113, and the cross sections of the connecting shell 114, the first buffer shell 112 and the second buffer shell 113 form an L-shaped structure;

[0072] The first buffer housing 112 is fixed to the side surface of the rear sub-frame 21;

[0073] At least one of the connection housing 114 , the first buffer housing 112 , and the second buffer housing 113 is provided with a first hollow cavity 111 .

[0074] Through the design of the first buffer shell 112, the second buffer shell 113 and the connecting shell 114, the first buffer shell 112 can be made to use the connecting shell 114 as a transition structure after being impacted or collided, so that the deformation of the first buffer shell 112 will not extend to the second buffer shell 113, and before the motor protection structure is replaced, the second buffer shell 113 can still achieve a relatively good protection effect. Similarly, after the second buffer shell 113 is impacted or collided, the connecting shell 114 is used as a transition structure, so that the deformation of the second buffer shell 113 will not extend to the first buffer shell 112, and before the motor protection structure is replaced, the first buffer shell 112 can still achieve a relatively good protection effect, avoiding the motor protection structure completely losing its protection effect due to the deformation of the first buffer shell 112 or the second buffer shell 113.

[0075] There are two connection modes for the connection between the first buffer shell 112 and the connection shell 114 and the connection between the second buffer shell 113 and the connection shell 114 .

[0076] Specifically, in the first connection mode, the connection between the first buffer shell 112 and the connection shell 114 and the connection between the second buffer shell 113 and the connection shell 114 are achieved by welding.

[0077] Preferably, the second connection method: the connecting shell 114, the first buffer shell 112 and the second buffer shell 113 are integrally formed to effectively simplify the production process of the motor protection structure, and at the same time make the first support structure 11 formed by the connecting shell 114, the first buffer shell 112 and the second buffer shell 113 have a better collapse energy absorption effect.

[0078] A first support reinforcement plate 115 is provided at a connection position between the connection shell 114 and the first buffer shell 112 , wherein the connection shell 114 , the first buffer shell 112 and the first support reinforcement plate 115 are integrally formed.

[0079] A second support reinforcement plate 116 is provided at a connection position between the connection shell 114 and the second buffer shell 113 , wherein the connection shell 114 , the second buffer shell 113 and the second support reinforcement plate 116 are integrally formed.

[0080] The first support reinforcement plate 115 and the second support reinforcement plate 116 can directly serve as reinforcement ribs in the first hollow cavity 111. In addition, the first support reinforcement plate 115 and the second support reinforcement plate 116 can also be a part of the connection shell 114.

[0081] The plane where the inner surface of the second buffer housing 113 is located is lower than the plane where the lower side of the motor 30 is located, so that the second buffer housing 113 can better protect the lower side of the motor 30 .

[0082] The first support reinforcement plate 115 and the second support reinforcement plate 116 serve as reinforcing ribs in the first hollow cavity 111. On the one hand, they can support the first buffer shell 112, the second buffer shell 113 and the connecting shell 114. On the other hand, as transition structures between the first buffer shell 112 and the connecting shell 114, and between the connecting shell 114 and the second buffer shell 113, they cooperate with the connecting shell 114 to prevent the impact force on the first buffer shell 112 from extending to the second buffer shell 113, and to prevent the impact force on the second buffer shell 113 from extending to the first buffer shell 112.

[0083] Furthermore, if Figure 4 and Figure 5 As shown, the motor protection structure may further include: a second assembly portion 13 disposed on the second buffer housing 113, wherein:

[0084] The second assembly portion 13 is used to fix and connect the bottom protection plate (not shown in the figure) so as to further isolate the bottom of the motor from contact or collision with protrusions on the road surface through the bottom protection plate.

[0085] Furthermore, if Figure 4 and Figure 5 As shown, the motor protection structure may further include: a second support structure 14, wherein:

[0086] The second supporting structure 14 is fixed to the inner surface of the shell surrounding the first hollow cavity 111;

[0087] The second supporting structure 14 has a second hollow cavity 141 or the second supporting structure 14 and the inner surface of the shell enclose the second hollow cavity 141 .

[0088] The second supporting structure 14 can be fixed to the inner surface of the shell by riveting, screwing, welding or the like.

[0089] Through the design of the second support structure 14, a structure for superimposing a crush energy absorption structure on the basis of the first support structure 11 is achieved, so as to further isolate and resist the impact force, so as to enhance the support effect and crush energy absorption effect of the motor protection structure.

[0090] In addition, the design of the second hollow cavity 141 can prevent the deformation of any structure of the above-mentioned first support structure 11 from climbing to the side of the second support structure 14 close to the motor 30, so that after the first support structure 11 is deformed, the second support structure 14 is combined with the deformed first support structure 11 to still achieve a relatively good protection effect.

[0091] In addition, since the second support structure 14 also has the characteristic of collapsing and absorbing energy, even if the second support structure 14 contacts the motor 30 under the impact of an impact force and the second support structure 14 is deformed, damage to the motor 30 can be avoided.

[0092] Furthermore, in the case where the cross section of the shell surrounding the first hollow cavity 111 is an L-shaped structure,

[0093] The cross section of the second support structure 14 is a triangle, and one angle of the triangle matches the inner angle of the L-shaped structure, so that the second support structure 14 and the housing cooperate to achieve the best support and protection effect.

[0094] The second support structure 14 is made of aluminum extruded profiles, so that the second support structure 14 has lower cost and better collapse energy absorption performance.

[0095] Furthermore, there is a gap between the second support structure 14 and the motor 30 to provide a deformation space for the second support structure 14 to collapse and absorb energy when a collision occurs, thereby improving the impact resistance and protection capabilities of the second support structure 14.

[0096] Furthermore, there is a gap between the first support structure 11 and the motor 30 , which provides a deformation space for the first support structure 11 to collapse and absorb energy, thereby improving the impact resistance and protection capabilities of the first support structure 11 .

[0097] In a preferred embodiment, the motor protection structure is applied to the rear subframe of the vehicle to protect the motor mounted on the rear subframe and prevent the motor from being damaged by a rear collision of the vehicle or by protrusions on the road surface under the vehicle.

[0098] It is worth noting that, for those skilled in the art, since there are certain differences in the structures of the front subframe and the rear subframe on the vehicle, specifically, an anti-collision beam is also arranged in front of the front subframe, and the front subframe is generally a full-frame structure, there are essential differences in the design of the relative position of the anti-collision beam and the front subframe and the design of the full-frame structure of the front subframe and the structure of the rear subframe on the vehicle, and there are certain differences in the principles of assembly, use and realization of protection on the front subframe and the rear subframe. Such differences and the existence of differences make the protection structure applied to the front subframe and the protection structure applied to the rear subframe not universal, that is, the protection structure applied to the front and rear subframes generally cannot be applied to the rear subframe.

[0099] The motor protection structure 10 provided in the embodiment of the present invention is installed on the rear sub-frame 21 and can protect the motor on the rear sub-frame 21 during a rear-end collision of the vehicle or a scratch on the bottom of the vehicle.

[0100] In addition, based on the motor protection structure 10 provided in the embodiment of the present invention, the design parameters of the motor protection structure 10, such as the dimensions of the first hollow cavity 111, the first buffer shell 112, the second buffer shell 113 and the connecting shell 114, can be adjusted so that the adjusted motor protection structure can be applied to the front sub-frame, which cooperates with the front sub-frame and the anti-collision beam to protect the motor installed on the front sub-frame.

[0101] Furthermore, if Figure 2 As shown, an embodiment of the present invention provides a vehicle subframe system 20, which may include: a rear subframe 21 and a motor protection structure 10 provided in any of the above embodiments, wherein the motor protection structure 10 is fixedly connected to the rear subframe 21 and encloses an isolation space for accommodating the motor 30 together with the rear subframe 21.

[0102] The motor protection structure 10 of the vehicle subframe system 20 includes a first assembly portion arranged on a first supporting structure and fixedly connected to the rear subframe, so that the shell surrounding the first hollow cavity included in the first supporting structure and the rear subframe surround an isolation space for accommodating the motor, so that the shell and the rear subframe are combined to protect the motor. In addition, since the first supporting structure includes the first hollow cavity and the shell surrounding the first hollow cavity, the shell has the characteristic of collapsing and absorbing energy. Then, after being hit, the shell resists the impact force generated by the impact, and the shell can absorb the energy generated by the impact to avoid damage to the motor caused by the collision.

[0103] In addition, the motor protection structure protects the motor, making it less likely to be damaged, reducing the safety risks of the motor, and effectively reducing the maintenance costs of the motor and the vehicle.

[0104] Furthermore, an embodiment of the present invention provides a vehicle, which may include the vehicle subframe system 20 provided in the above embodiment.

[0105] Below Figure 4 and Figure 5 Taking the motor protection structure 10 as an example, the principle of the motor protection structure 10 protecting the motor 30 on the rear sub-frame is described in detail.

[0106] Specifically, Figure 4 and Figure 5 The upper end of the first support structure 11 of the motor protection structure 10 shown in the figure is an L-shaped cross-section structure fixed to the rear side of the rear subframe, and the lower end of the first support structure 11 extends to the bottom of the motor 30, forming a Figure 2 The structure shown.

[0107] When the vehicle is hit from behind, the first buffer shell 112 of the first support structure 11 and the first hollow cavity 111 enclosed by it are deformed. Due to the existence of the connecting shell 114, the first buffer shell 112 will not climb to the second buffer shell 113 located below the motor 30, so that the second buffer shell 113 can continue to protect the bottom of the motor 30. In addition, when the impact force of the rear collision is relatively small, the second support structure 14 will not be deformed, and it can also replace the first buffer shell 112 to continue to protect the rear side of the motor 30. When the impact force of the rear collision is relatively large, the second support structure 14 has the characteristics of collapsing and absorbing energy, and its deformation can also reduce the impact force on the motor 30 and will not damage the motor 30.

[0108] In addition, similarly, the second buffer shell 113 located below the first support structure 11 and the first hollow cavity 111 enclosed by it are deformed. Due to the existence of the connecting shell 114, the second buffer shell 113 will not climb to the first buffer shell 112 located on the rear side of the motor 30, so that the first buffer shell 112 can continue to protect the rear side of the motor 30. In addition, in the case where the impact force of the collision below is relatively small, the second support structure 14 will not be deformed, and it can also replace the second buffer shell 113 to continue to protect the bottom of the motor 30. In the case of a relatively large impact force from below, the second support structure 14 has the characteristics of collapse and energy absorption, and its deformation can also make the impact force on the motor 30 relatively small, and will not damage the motor 30.

[0109] According to the technical solution of the embodiment of the present invention, the motor protection structure includes a first assembly portion arranged on the first supporting structure, which is fixedly connected to the rear sub-frame, so that the shell surrounding the first hollow cavity included in the first supporting structure and the rear sub-frame surround an isolation space for accommodating the motor, so that the shell and the rear sub-frame are combined to protect the motor. In addition, since the first supporting structure includes the first hollow cavity and the shell surrounding the first hollow cavity, the shell has the characteristic of collapsing and absorbing energy. Then, after being hit, the shell resists the impact force generated by the impact, and the shell can absorb the energy generated by the impact to avoid damage to the motor caused by the collision.

[0110] In addition, the motor protection structure protects the motor, making it less likely to be damaged, reducing the safety risks of the motor, and effectively reducing the maintenance costs of the motor and the vehicle.

[0111] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0112] Moreover, the system structures and structural protection principles provided in the above embodiments are only used to help understand the structure, method and core idea of ​​the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A motor protection structure, characterized in that: include: A first supporting structure (11) and a first assembly portion (12) arranged on the first supporting structure (11), wherein: The first supporting structure (11) comprises a first hollow cavity (111) and a shell surrounding the first hollow cavity (111); The length direction of the shell surrounding the first hollow cavity (111) extends along the length direction of the rear subframe (21) of the vehicle; When the first assembly portion (12) is fixedly connected to the rear sub-frame (21), the housing surrounding the first hollow cavity (111) and the rear sub-frame (21) surround an isolated space for accommodating the motor (30).

2. The motor protection structure according to claim 1, characterized in that: The cross section of the shell surrounding the first hollow cavity (111) is an L-shaped structure, wherein: When the first assembly portion (12) is fixedly connected to a rear subframe (21) of a vehicle, the upper end of the L-shaped structure is fixed to a side surface of the rear subframe (21), and the lower end of the L-shaped structure extends to below the rear subframe (21).

3. The motor protection structure according to claim 1, characterized in that: The first supporting structure (11) further comprises reinforcing ribs arranged in the first hollow cavity (111).

4. The motor protection structure according to claim 1 or 2, characterized in that: The first supporting structure (11) comprises: a first buffer shell (112), a second buffer shell (113) and a connecting shell (114), wherein: The connecting shell (114) is located between the first buffer shell (112) and the second buffer shell (113), and the cross-sections of the connecting shell (114), the first buffer shell (112) and the second buffer shell (113) form an L-shaped structure; The first buffer shell (112) is fixed to the side surface of the rear sub-frame (21); At least one of the connecting shell (114), the first buffer shell (112) and the second buffer shell (113) is provided with the first hollow cavity (111).

5. The motor protection structure according to any one of claims 1 to 3, characterized in that: The first supporting structure (11) is made of aluminum extruded profile.

6. The motor protection structure according to claim 4, characterized in that: The connecting shell (114), the first buffer shell (112) and the second buffer shell (113) are integrally formed.

7. The motor protection structure according to claim 4, characterized in that: A first support reinforcement plate (115) is provided at the connection position between the connection shell (114) and the first buffer shell (112), wherein: The connecting shell (114), the first buffer shell (112) and the first supporting reinforcement plate (115) are integrally formed; and / or, A second support reinforcement plate (116) is provided at the connection position between the connection shell (114) and the second buffer shell (113), wherein: The connecting shell (114), the second buffer shell (113) and the second supporting reinforcement plate (116) are integrally formed.

8. The motor protection structure according to claim 4, characterized in that: The plane where the inner surface of the second buffer housing (113) is located is lower than the plane where the lower side of the motor (30) is located.

9. The motor protection structure according to claim 8, characterized in that: Also includes: A second assembly portion (13) is provided on the second buffer housing (113), wherein: The second assembly portion (13) is used for fixedly connecting the bottom protection plate.

10. The motor protection structure according to any one of claims 1 to 3 and 6 to 9, characterized in that: Also includes: A second support structure (14), wherein The second supporting structure (14) is fixed to the inner surface of the shell surrounding the first hollow cavity (111); The second supporting structure (14) has a second hollow cavity (141), or the second supporting structure (14) and the inner surface of the shell enclose a second hollow cavity (141).

11. The motor protection structure according to claim 10, characterized in that: In the case where the cross section of the shell surrounding the first hollow cavity (111) is an L-shaped structure, The cross section of the second supporting structure (14) is a triangle, and one angle of the triangle matches the inner angle of the L-shaped structure.

12. The motor protection structure according to claim 10, characterized in that: The second supporting structure (14) is made of aluminum extruded profile.

13. The motor protection structure according to claim 10, characterized in that: There is a gap between the second supporting structure (14) and the motor (30); and / or, There is a gap between the first supporting structure (11) and the motor (30).

14. A vehicle subframe system, characterized in that: include: A rear subframe (21) and a motor protection structure (10) as claimed in any one of claims 1 to 14, wherein: The motor protection structure (10) is fixedly connected to the rear sub-frame (21), and together with the rear sub-frame (21) encloses an isolation space for accommodating the motor (30).

15. A vehicle, characterized in that: include: The vehicle subframe system of claim 14.

Images