Power battery protection structure and automobile

Abstract

According to the power battery protection structure and the automobile, a protection beam is arranged at the bottom of an automobile body, the protection beam comprises a fixing part and a protection part, the fixing part is connected with the automobile body, a protection face is arranged at the end, close to an automobile head, of the protection part, and the protection face is gradually and obliquely arranged close to the automobile body from the end away from the automobile head to the end close to the automobile head; wherein the protective beam is positioned between the power battery and the vehicle head; the protection structure is arranged at the bottom of the automobile body and located in front of the power battery, and the maximum distance between the protection beam and the bottom of the automobile body is larger than the maximum distance between the power battery and the bottom of the automobile body in the direction from the automobile bottom to the automobile roof. The protection structure is in contact with an obstacle before the power battery, the inclined protection surface plays a role in guiding, the vehicle body is lifted, the vehicle head can be lifted upwards, the power battery is prevented from being in contact with the obstacle, and the power battery is effectively prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power automobile parts, in particular to a power battery protection structure and an automobile. BACKGROUND

[0002] With the increasing market share of electric vehicles, the safety of electric vehicles has become the focus of users, and the safety of power batteries, as the core components of electric vehicles, has a greater impact on electric vehicles. The safety of power batteries includes structural safety, electrical safety, thermal safety and environmental safety. At present, major manufacturers and battery manufacturers have proposed various solutions to improve the safety of power batteries, effectively improving the safety performance of electric vehicles. As a vehicle component, power batteries need to be partially energy-absorbing protected by vehicle structural parts, and the vehicle safety protection needs to be further improved.

[0003] Although the vehicle is equipped with an automatic emergency braking system and a collision airbag protection function, it usually has little effect on the bottom obstacles of the vehicle. The power battery is designed at the bottom of the vehicle body, and the obstacles on the road are easy to scratch the power battery when the vehicle is running, affecting the sealing performance of the battery, and in severe cases, thermal runaway may occur. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a power battery protection structure and an automobile, which solves the problem that the power battery is designed at the bottom of the vehicle body, and the obstacles on the road are easy to scratch the power battery when the vehicle is running, affecting the sealing performance of the battery, and in severe cases, thermal runaway may occur.

[0005] To achieve the above-mentioned purposes and other related purposes, the utility model provides a power battery protection structure, which comprises:

[0006] A protection beam is arranged at the bottom of the vehicle body, the protection beam comprises a fixed part and a protection part, the fixed part is connected with the vehicle body, and the protection part is provided with an inclined protection surface at one end close to the vehicle head, and the protection surface is arranged to be inclined to the vehicle body from one end away from the vehicle head to one end close to the vehicle head.

[0007] Among them, the protection beam is located between the power battery and the vehicle head.

[0008] In the direction from the bottom of the vehicle to the top of the vehicle, the maximum distance of the protection beam from the bottom of the vehicle body is greater than the maximum distance of the power battery from the bottom of the vehicle body.

[0009] Optionally, the protection beam further comprises a buffer surface, and the buffer surface is smoothly connected with the protection surface.

[0010] Optionally, the protection beam is a hollow structure.

[0011] Optionally, the reinforcing plates are arranged at two ends of the protective beam.

[0012] The reinforcing plate comprises a plurality of triangular reinforcing portions arranged at the side surfaces of the two ends of the protective beam.

[0013] The side surfaces of the two ends of the protective beam each have opposite first and second ends, and the plurality of triangular reinforcing portions are arranged at the first and second ends of the side surfaces of the protective beam, and the triangular reinforcing portions at the first and second ends are oppositely arranged and staggered.

[0014] Optionally, reinforcing ribs are arranged along the length direction of the protective beam.

[0015] The reinforcing ribs are triangular in cross section.

[0016] Optionally, a plurality of connecting holes are arranged on the protective beam, the plurality of connecting holes are arranged through the protective beam, and the protective beam is connected with the vehicle body through the connecting holes.

[0017] Optionally, a mounting groove is arranged on the surface adjacent to the vehicle body of the protective beam, and a pressure sensor is arranged in the mounting groove.

[0018] Optionally, a cross section is arranged at one end of the protective surface close to the vehicle head.

[0019] Optionally, the protective structure further comprises a protective plate, one end of the protective plate is located between the protective beam and the vehicle body, and the other end of the protective plate covers the power battery connector.

[0020] The application also provides an automobile comprising the protective structure.

[0021] As described above, the technical scheme of the utility model brings at least the following beneficial effects: the protective structure is arranged at the bottom of the vehicle body close to the vehicle head, the protective structure is located in front of the power battery, when the bottom of the vehicle collides with an obstacle, the protective structure contacts the obstacle before the power battery, when the collision occurs, the inclined protective surface plays a guiding role, the vehicle body is lifted, the vehicle head is raised upward, the power battery is prevented from contacting the obstacle, and the power battery is effectively protected from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structure diagram of the protective structure according to an exemplary embodiment of the utility model is shown.

[0023] Figure 2 A cross-sectional view of the protective structure according to an exemplary embodiment of the utility model is shown.

[0024] Figure 3 A bottom view of the protective structure according to an exemplary embodiment of the utility model is shown.

[0025] Part No.:

[0026] 1, fixed part; 2, protective surface; 3, buffer surface; 4, triangular reinforcement; 5, mounting groove; 6, pressure sensor; 7, reinforcing rib; 8, protective plate. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail with specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification. The present application can also be implemented or applied in other different embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0028] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be randomly changed, and the layout pattern of the components can be more complex.

[0029] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present disclosure, however, it is obvious to those skilled in the art that the embodiments of the present disclosure can be implemented without these specific details, and in other embodiments, the well-known structures and devices are shown in the form of block diagrams rather than in the form of details, to avoid making the embodiments of the present disclosure difficult to understand.

[0030] It should be noted that in the present embodiment, the front direction is the direction of the vehicle head, the rear direction is the direction of the vehicle tail, the upper direction is the direction of the vehicle roof, and the lower direction is the direction of the vehicle bottom.

[0031] Please refer to Figure 1 and Figure 2 The utility model provides a kind of power battery protection structure, comprising: protection beam, the protection beam is arranged at vehicle body bottom, the protection beam includes fixed part 1 and protection part, the fixed part 1 is connected with vehicle body, the protection part is close to the end of vehicle head and is provided with protective surface 2, the protective surface 2 is gradually close to vehicle body and is inclined to be arranged from the end away from vehicle head to the end close to vehicle head;Wherein, the protection beam is located between power battery and vehicle head;Along the direction from vehicle bottom to vehicle top, the maximum distance of the protection beam from vehicle body bottom is greater than the maximum distance of power battery from vehicle body bottom.

[0032] In one embodiment of the present application, specifically, the device comprises a protection beam arranged at the bottom of the vehicle body near the front end, the protection beam is located between the power battery and the front end from the direction of vehicle advancement (from back to front), the lowest part of the protection beam is lower than the lowest part of the power battery from the direction of the ground to the bottom of the vehicle (from bottom to top), when a collision occurs from the direction of vehicle advancement, the protection beam in front collides with the obstacle first, thereby avoiding the direct collision between the obstacle and the power battery, the protection beam comprises a fixed part 1 and a protection part, the fixed part 1 is located at the top of the protection beam, used for connecting with the bottom of the vehicle body, the protection part is the bottom of the protection beam, a protection surface 2 is arranged on the protection part, the protection surface 2 is an inclined surface, the protection surface 2 is arranged to be inclined gradually to the bottom of the vehicle along the direction from back to front, the closer the protection surface 2 is to the front end, the closer the protection surface 2 is to the vehicle body, when a collision occurs, the inclined protection surface 2 plays a guiding role to lift the vehicle body, so that the front end of the vehicle body is raised upward, the vehicle body continues to move forward, the power battery is lifted and moves forward, thereby avoiding the contact between the power battery and the obstacle, and effectively protecting the power battery from being damaged.

[0033] In one embodiment of the present application, specifically, the protection surface 2 can also be a plurality of inclined surfaces, the protection surface 2 comprises a first inclined surface and a second inclined surface, the first inclined surface is located in front of the second inclined surface, the first inclined surface and the second inclined surface are integrally formed and smoothly connected, the inclination angle of the first inclined surface is greater than the inclination angle of the second inclined surface, when a collision occurs, the first inclined surface first contacts the obstacle and bears the force, the second inclined surface guides the front end of the vehicle body to be raised upward, thereby reducing the impact force borne by the vehicle body and further dispersing the collision energy.

[0034] The protection beam further comprises a buffer surface 3, the buffer surface 3 is smoothly connected with the protection surface 2.

[0035] In one embodiment of the present application, specifically, the bottom of the protection beam comprises the buffer surface 3 and the protection surface 2, the buffer surface 3 is a flat surface, the protection surface 2 is an inclined surface, the buffer surface 3 and the protection surface 2 are smoothly connected, when a collision occurs between the protection beam and the obstacle, the protection surface 2 lifts the vehicle body, and then the buffer surface 3 plays a guiding role to guide the rapidly moving vehicle body to the front, thereby avoiding the direct falling of the vehicle body and the contact between the power battery and the obstacle.

[0036] In one embodiment of the present application, specifically, the protection beam is a hollow structure, the protection beam is integrally formed by casting, thereby reducing the overall weight of the protection beam and having the effect of lightening.

[0037] The protection beam is provided with a reinforcing plate at both ends thereof;

[0038] The reinforcing plate comprises a plurality of triangular reinforcing parts 4, the triangular reinforcing parts 4 are arranged on the side surfaces of both ends of the protection beam respectively;

[0039] The side surface of the two ends of the protective beam has opposite first and second ends, and a plurality of triangular reinforcing parts 4 are arranged at the first and second ends of the side surface of the protective beam, and the triangular reinforcing part 4 at the first end and the triangular reinforcing part 4 at the second end are oppositely arranged and staggered.

[0040] In an embodiment of the present application, specifically, the two ends of the protective beam are open, facilitating casting forming, and a reinforcing plate is arranged at the two ends of the protective beam, simultaneously playing a role of sealing, the opening at the two ends of the protective beam and the reinforcing plate are in shape fitting, simultaneously playing a role of sealing and supporting, the reinforcing plate is composed of a plurality of triangular reinforcing parts 4 in the shape of triangular sheet, the number and shape of the triangular reinforcing parts 4 at the two ends of the protective beam are consistent, in this embodiment, the first end is the upper end, and the second end is the lower end (the first end is the upper top surface, and the second end is the lower bottom surface), part of the triangular reinforcing parts 4 are arranged on the upper top surface of the inner wall of the opening at the two ends of the protective beam, and the other part of the triangular reinforcing parts 4 are arranged on the lower bottom surface of the inner wall of the opening at the two ends of the protective beam, the edge of the triangular reinforcing part 4 located on the upper top surface of the inner wall of the opening at the two ends of the protective beam is fixedly connected (welded, bolted, etc.) with the upper top surface, and the extended corner is fixedly connected with the lower bottom surface of the inner wall of the opening at the two ends of the protective beam, and vice versa, the edge of the triangular reinforcing part 4 located on the lower bottom surface of the inner wall of the opening at the two ends of the protective beam is fixedly connected with the lower bottom surface, and the extended corner is fixedly connected with the upper top surface of the inner wall of the opening at the two ends of the protective beam, and the triangular reinforcing parts 4 located on the upper top surface and the lower bottom surface are staggered, and the adjacent edges located on the upper top surface and the lower bottom surface are in shape fitting.

[0041] Please refer to Figure 2 In an embodiment of the present application, specifically, a reinforcing rib 7 is arranged along the length direction of the protective beam; the reinforcing rib 7 is in the shape of a triangle in cross section.

[0042] In an embodiment of the present application, specifically, a plurality of connecting holes are arranged on the protective beam, the plurality of connecting holes pass through the protective beam, and the protective beam is connected with the vehicle body through the connecting holes.

[0043] In an embodiment of the present application, specifically, a mounting groove 5 is arranged on the surface adjacent to the vehicle body of the protective beam, a pressure sensor 6 is arranged in the mounting groove 5, the upper top surface of the pressure sensor 6 is in contact with the bottom surface of the vehicle body, when the protective beam contacts with an obstacle, the protective beam is extruded, the pressure sensor 6 is also extruded, the pressure sensor 6 transmits a pressure value Vi to the vehicle controller, Vi is compared with an initial value V0 set in advance, when Vi≥V0, if yes, the vehicle controller gives a command to reduce the vehicle speed, the vehicle speed is slowly reduced to a set value, the double flash light is turned on, and a voice broadcast is given to remind the driver that the power battery bottom is impacted by collision, please pull over and stop to check, so as to timely detect and maintain the power battery.

[0044] In one embodiment of the present application, specifically, the pressure sensor 6 is an elastic wave sensor, which is arranged on the side of the protection beam.

[0045] In one embodiment of the present application, specifically, the protection surface 2 is provided with a cross section at the end close to the vehicle head, so as to increase the area of the front end surface of the protection beam, and reduce the pressure in the event of a collision.

[0046] Please refer to Figure 3 In one embodiment of the present application, specifically, the protection structure further comprises a protection plate 8, one end of the protection plate 8 is located between the protection beam and the vehicle body, and the other end of the protection plate 8 covers the power battery connector, so as to protect the power battery connector and avoid the collision of the splashed debris with the power battery connector.

[0047] The present application also provides an automobile comprising the above protection structure.

[0048] The above embodiments only exemplarily illustrate the principle and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. A protection structure for a power battery, characterized in that, The application relates to a power battery protection structure. The protection structure comprises a protection beam arranged at the bottom of a vehicle body, the protection beam comprising a fixed part and a protection part, the fixed part being connected with the vehicle body, and the protection part being provided with an inclined protection surface at one end close to the vehicle head, the protection surface being arranged to be gradually close to the vehicle body from the other end away from the vehicle head. The protection beam is located between the power battery and the vehicle head. In the direction from the bottom of the vehicle body to the top of the vehicle body, the maximum distance between the protection beam and the bottom of the vehicle body is greater than the maximum distance between the power battery and the bottom of the vehicle body.

2. The power battery protection structure according to claim 1, wherein the protection beam further comprises a buffer surface which is smoothly connected with the protection surface.

3. The power battery protection structure according to claim 1, wherein the protection beam is a hollow structure.

4. The power battery protection structure according to claim 3, wherein the protection beam is provided with a reinforcing plate at each end. The reinforcing plate comprises a plurality of triangular reinforcing parts which are arranged at the side surfaces of the two ends of the protection beam respectively. The side surfaces of the two ends of the protection beam each have a first end and a second end, and the triangular reinforcing parts are arranged at the first end and the second end of the side surfaces of the protection beam respectively, and the triangular reinforcing part at the first end and the triangular reinforcing part at the second end are oppositely arranged.

5. The power battery protection structure according to claim 3, wherein a reinforcing rib is arranged in the protection beam along the length direction of the protection beam. The reinforcing rib is triangular in cross section.

6. The power battery protection structure according to any one of claims 1-5, wherein a plurality of connecting holes are arranged on the protection beam, the connecting holes penetrating through the protection beam, and the protection beam is connected with the vehicle body through the connecting holes.

7. The power battery protection structure according to any one of claims 1-5, wherein a mounting groove is arranged on the surface of the protection beam adjacent to the vehicle body, and a pressure sensor is arranged in the mounting groove.

8. The power battery protection structure according to any one of claims 1-5, wherein the protection surface is provided with a cross section at the end close to the vehicle head. The protection structure further comprises a protection plate, one end of the protection plate being located between the protection beam and the vehicle body, and the other end of the protection plate covering a power battery connector. The protection structure comprises the protection structure according to any one of claims 1-9. ​ ​ ​ ​ ​ 9. A protective structure for a power cell as claimed in any one of claims 1 to 5, wherein, ​ 10. An automobile characterized by comprising: ​

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