Battery pack bottom protection plate, battery pack and vehicle

Abstract

The application provides a battery pack bottom protection plate, which is installed at the bottom of a vehicle body and comprises a first plate and a second plate arranged along the width direction of the vehicle body, wherein the first plate and the second plate respectively have a first working position and a second working position, in the first working position, the first plate and the second plate respectively cover the corresponding area of the battery module of the battery pack from the bottom of the vehicle body, and in the second working position, the first plate and the second plate respectively extend to the outside of the vehicle body from the corresponding side of the vehicle body and are suitable for the getting on and off of the vehicle. According to the embodiment of the application, the battery pack bottom protection plate in the first working position can be used to protect the battery module from the bottom of the vehicle body during the driving of the vehicle, and the battery pack bottom protection plate in the second working position can be used to facilitate the getting on and off of the personnel and / or objects or the detection or disassembly of the battery module as required. The application also provides a corresponding battery pack and vehicle.

Description

Technical Field

[0001] This invention relates to the field of power battery technology, and in particular to a battery pack bottom protection plate, a battery pack, and a corresponding vehicle. Background Technology

[0002] The battery packs of new energy vehicles are generally installed at the bottom of the vehicle body and are usually equipped with a battery pack underbody protection plate as a shock absorber to reduce safety risks such as thermal runaway or heat propagation caused by collisions or compression of the battery pack bottom. Currently, common battery pack underbody protection plates are generally a single piece of plate, usually fixed to the battery pack casing or the vehicle chassis structure. While such plates are sturdy, they also hinder the maintenance, inspection, and replacement of the battery modules. Furthermore, they present challenges for people with mobility impairments getting in and out of the vehicle, situations where the vehicle is parked on the edge of a flooded road, or situations where heavy items are difficult to move into the passenger compartment, all of which negatively impact the user experience. There is still room for improvement in the ease of use and versatility of existing battery pack underbody protection plates. Summary of the Invention

[0003] The purpose of this invention is to provide a battery pack underbody protection plate, a battery pack, and a corresponding vehicle, so as to at least partially solve the problems existing in the prior art.

[0004] According to a first aspect of the present invention, a battery pack underbody protection plate is provided, which is mounted on the bottom of a vehicle body, and the battery pack underbody protection plate comprises: The first and second plates are arranged along the width direction of the vehicle body, wherein... The first plate and the second plate respectively have a first working position and a second working position. In the first working position, the first plate and the second plate respectively cover the corresponding areas of the battery module of the battery pack from the bottom of the vehicle body, and In the second working position, the first plate and the second plate extend from their respective vehicle body sides to the outside of the vehicle body to facilitate getting on and off the vehicle.

[0005] In one exemplary embodiment, the first plate and the second plate are respectively configured to extend outwards from the vehicle body by flipping or translating from the first working position toward the respective vehicle body side.

[0006] In one exemplary embodiment, the first plate and the second plate are foldable plates, each comprising a plurality of sub-plates hinged to each other, and are configured to bend into a stepped shape in the second working position for use as steps for getting on and off the vehicle.

[0007] In one exemplary embodiment, a limiting member is provided between the respective plurality of sub-plates of the first plate and the second plate, the limiting member being used to limit the flip angle between adjacent sub-plates.

[0008] In one exemplary embodiment, the plurality of sub-plates of the first plate and the second plate are further configured to be arranged in an inclined plane in the second working position for use as ramps for getting on and off vehicles.

[0009] In one exemplary embodiment, the battery pack bottom cover further includes a locking member configured to lock the first plate and the second plate in the first working position.

[0010] In one exemplary embodiment, the battery pack bottom cover further includes: A drive unit, configured to drive the first board and the second board to switch between a first working position and a second working position; and A control unit configured to control the operation of the drive unit.

[0011] In one exemplary embodiment, the first plate and the second plate are configured to switch between the first working position and the second working position together and separately.

[0012] In one exemplary embodiment, the upward-facing surfaces of the first plate and the second plate when in the second working position are anti-slip surfaces that have undergone anti-slip treatment.

[0013] According to a second aspect of the present invention, a battery pack is provided, the battery pack including the battery pack bottom cover plate according to the first aspect of the present invention.

[0014] According to a third aspect of the present invention, a vehicle is provided, the vehicle including a battery pack underbody according to a first aspect of the present invention or a battery pack according to a second aspect of the present invention.

[0015] The beneficial effects of the present invention according to the above aspects are that, by means of the first plate and the second plate having a first working position and a second working position, not only can the battery module be protected from the bottom of the vehicle body during vehicle operation, but the battery pack can also be conveniently opened from the bottom of the vehicle body to expose the battery module as needed, facilitating maintenance work such as inspection and repair of the battery module. Furthermore, steps or ramps can be formed on the side of the vehicle body to facilitate the entry and exit of people and goods. Therefore, it has the advantages of ease of use and multi-functionality, and can improve the user's vehicle experience. Attached Figure Description

[0016] The invention will now be described in more detail with reference to the accompanying drawings, which will provide a better understanding of its principles, features, and advantages. The drawings include: Figure 1 A perspective view of a portion of a battery pack according to an exemplary embodiment of the present invention is schematically shown, wherein the first plate and the second plate of the bottom protective plate of the battery pack are both in a first working position; Figure 2 A perspective view of a portion of a battery pack according to an exemplary embodiment of the present invention is schematically shown, wherein both the first plate and the second plate of the bottom protective plate of the battery pack are in a second working position; Figure 3 A side view of a portion of a battery pack according to an exemplary embodiment of the present invention is shown schematically, wherein the first plate and the second plate of the bottom cover of the battery pack are both in a second working position; Figure 4 A perspective view schematically illustrates a portion of a battery pack according to an exemplary embodiment of the present invention, wherein a first plate of the battery pack bottom cover is in a second working position and a second plate is in a first working position; and Figure 5 A vehicle according to an exemplary embodiment of the present invention is schematically shown, wherein a plate of the battery pack underbody protection plate is shown in a second working position. Detailed Implementation

[0017] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0018] Figures 1 to 4 A portion of a battery pack 100 according to an exemplary embodiment of the present invention is shown schematically. Figures 1 to 4 As shown, the battery pack 100 includes a battery module 20 and a battery pack bottom protection plate 10 according to an embodiment of the present invention.

[0019] The battery pack underbody protection plate 10 is installed at the bottom of the vehicle body. Here, "bottom of the vehicle body" refers to its position relative to the vertical direction of the vehicle body, and is not limited to the specific object on which it is installed. According to the embodiments of the present invention, the battery pack underbody protection plate 10 can be directly installed on the vehicle chassis structure, or it can be installed as part of the battery pack 100 on the housing (not shown) of the battery pack 100 with a lower opening.

[0020] The battery pack bottom cover 10 includes a first plate 11 and a second plate 12 arranged along the width direction W of the vehicle body. The first plate 11 and the second plate 12 are mounted opposite to each other, meaning that the first plate 11 and the second plate 12 can open or close the lower opening of the battery pack 100 housing by flipping or translating in opposite directions, thereby exposing or covering the internal battery module 20. Thus, the first plate 11 and the second plate 12 respectively have a closed first working position and an open second working position.

[0021] Figure 1 An embodiment of the first plate 11 and the second plate 12 in a first working position is shown, as follows: Figure 1 As shown, in the first working position, similar to a conventional battery pack bottom guard plate, the first plate 11 and the second plate 12 respectively cover the corresponding area of ​​the battery module 20 from the bottom of the vehicle body (i.e., the lower side in the figure), which can provide protection for the battery module 20 and prevent the battery module 20 from causing thermal runaway or thermal propagation of the cells due to collision or compression, thereby bringing safety risks.

[0022] Preferably, the battery pack bottom cover 10 further includes a locking member (not shown), which is configured to lock the first plate 11 and the second plate 12 in a first working position, thereby preventing the first plate 11 and the second plate 12 from being unintentionally opened due to vibration or impact, thus losing their function of protecting the battery module 20 and affecting driving safety. The locking member can be any suitable locking member known to those skilled in the art, and can be a locking member that locks the first plate 11 and the second plate 12 to each other, or a locking member that locks the first plate 11 and the second plate 12 to the housing of the battery pack 10 or the vehicle chassis structure, respectively; no particular limitation is made here.

[0023] Figure 2 and Figure 3 An embodiment of the first plate 11 and the second plate 12 in the second working position is shown respectively. Figure 5 This schematically illustrates an embodiment where one plate of the battery pack bottom cover 10 is in a second operating position. (In conjunction with...) Figure 2 , Figure 3 and Figure 5 As shown, in the second working position, the first plate 11 and the second plate 12 extend from their respective vehicle sides to the outside of the vehicle body, respectively, and are adapted for use in getting on and off the vehicle. Here, "for getting on and off the vehicle" can include the boarding and alighting of personnel and / or the loading of goods.

[0024] In a preferred embodiment, the first plate 11 and the second plate 12 are respectively configured to extend outwards to the outside of the vehicle body by flipping from a first working position toward the corresponding vehicle body side. Specifically, as... Figures 1 to 4As shown, the first plate 11 and the second plate 12 are foldable plates comprising multiple sub-plates hinged to each other. Each adjacent sub-plate can pivot relative to each other, and the outer edge of the sub-plate closest to the outer side in the vehicle width direction W of each of the first and second plates in the first working position is pivotally mounted to the housing of the battery pack 100 or the vehicle chassis structure. Thus, when flipped, the pivoting folding between the sub-plates avoids rigid collisions between the free ends of the first plate 11 and the second plate 12 and the ground, allowing the first plate 11 and the second plate 12 to be opened smoothly by flipping. The opened first plate 11 and the second plate 12 expose the battery module 20 inside the battery pack 100, facilitating maintenance and inspection work by personnel.

[0025] Furthermore, since both the first plate 11 and the second plate 12 are formed as foldable plates, in the second working position, the first plate 11 and the second plate 12 can each be bent into a step shape to serve as steps for people to get on and off the vehicle. For example, when the vehicle body is high, or when the people getting on and off are elderly people or children with mobility difficulties, such steps can be used for people to step on when getting on and off the vehicle. In addition, when the edge of the road near the sidewalk is flooded due to rain, such steps can be placed between the vehicle body and the sidewalk for drivers and passengers to step on when getting on and off the vehicle, thus avoiding the drivers and passengers stepping in water.

[0026] Optionally, the sub-plates of the first plate 11 and the second plate 12 can also be arranged in an inclined plate shape at the second working position to serve as ramps for people and / or goods to get on and off the vehicle, thereby allowing wheelchairs or goods to be pushed into the vehicle interior via the ramps.

[0027] In a preferred embodiment, a limiting member is provided between the respective plurality of sub-plates of the first plate 11 and the second plate 12. The limiting member is used to limit the flipping angle between adjacent sub-plates. With such a limiting member, the first plate 11 and the second plate 12 can be securely fixed in a stepped or inclined plate state, providing reliable support for personnel or objects. This limiting member can also be any suitable limiting member known to those skilled in the art, and is not particularly limited here.

[0028] In an alternative preferred embodiment, the first plate 11 and the second plate 12 are respectively configured to extend outwards from the vehicle body by translating from the first working position toward the respective vehicle body side. In this case, the first plate 11 and the second plate 12 may be folded into a step or formed into a ramp by tilting downwards after extending outwards from the vehicle body.

[0029] In a preferred embodiment, the battery pack underbody 10 further includes a drive unit configured to drive the first plate 11 and the second plate 12 between a first operating position and a second operating position. Additionally, the battery pack underbody 10 includes a control unit configured to control the operation of the drive unit. The control unit may be a dedicated controller for the battery pack underbody 10, or it may be integrated into the vehicle's central controller, or implemented as the vehicle's electronic control unit (ECU).

[0030] The first plate 11 and the second plate 12 shown in each figure each have three sub-plates. However, the invention is not limited to this. The first plate 11 and / or the second plate 12 may have four or more sub-plates as needed. The control unit and the drive unit may also be further configured to selectively determine the movement or position or attitude of individual sub-plates so that the steps or ramps are formed to the required height and / or number of steps and / or length and / or slope as needed.

[0031] In a preferred embodiment, the first plate 11 and the second plate 12 are configured to switch between a first working position and a second working position together and separately. That is, the first plate 11 and the second plate 12 can switch between the first working position and the second working position simultaneously, sequentially, or individually and selectively. Figure 4 and Figure 5 As shown, only one board can be switched to the second working position as needed, providing assistance for getting on and off the vehicle or for the maintenance of the battery module.

[0032] In a preferred embodiment, the upward-facing surfaces of the first plate 11 and the second plate 12 when in the second working position are anti-slip surfaces that have undergone anti-slip treatment. The anti-slip treatment can be any known anti-slip treatment, such as providing an anti-slip pad on the upper surface or forming anti-slip textures on the upper surface. Through this anti-slip treatment, the working surface of the step or ramp formed by the first plate 11 and the second plate 12 can have anti-slip properties, thereby improving the user experience.

[0033] According to an embodiment of the present invention, the battery pack bottom guard plate 10, by means of a first plate 11 and a second plate 12 having a first working position and a second working position, can not only protect the battery module from the bottom of the vehicle body, but also easily open the battery pack to expose the battery module, facilitating maintenance work such as inspection and repair of the battery module. Moreover, the first plate 11 and the second plate 12 can be modified into steps or ramps to facilitate the entry and exit of personnel and goods, thus having both ease of use and multifunctionality.

[0034] like Figure 5As shown, the present invention also provides a vehicle 200 having a battery pack bottom protection plate 10 according to an embodiment of the present invention or a battery pack 100 according to an embodiment of the present invention.

[0035] Although specific embodiments of the invention have been described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the invention. Various substitutions, alterations, and modifications can be conceived without departing from the spirit and scope of the invention.

Claims

1. A battery pack underbody protection plate (10) installed on the bottom of a vehicle body, wherein the battery pack underbody protection plate (10) comprises: The first plate (11) and the second plate (12) are arranged along the width direction (W) of the vehicle body, wherein, The first plate (11) and the second plate (12) respectively have a first working position and a second working position. In the first working position, the first plate (11) and the second plate (12) respectively cover the corresponding areas of the battery module (20) of the battery pack from the bottom of the vehicle body, and In the second working position, the first plate (11) and the second plate (12) extend from the respective vehicle body side to the outside of the vehicle body to be used for getting on and off the vehicle.

2. The battery pack bottom protective plate (10) according to claim 1, wherein, The first plate (11) and the second plate (12) are respectively configured to extend to the outside of the vehicle body by flipping or translating from the first working position toward the corresponding vehicle body side.

3. The battery pack bottom protective plate (10) according to claim 2, wherein, The first plate (11) and the second plate (12) are foldable plates comprising a plurality of sub-plates hinged to each other, and are configured to be bent into a stepped shape in the second working position for use as steps for getting on and off the vehicle.

4. The battery pack bottom protective plate (10) according to claim 3, wherein, A limiting member is provided between the respective plurality of sub-plates of the first plate (11) and the second plate (12), the limiting member being used to limit the flip angle between adjacent sub-plates.

5. The battery pack bottom protection plate (10) according to claim 3 or 4, wherein, The plurality of sub-plates of the first plate (11) and the second plate (12) are also configured to be arranged in an inclined plate shape in the second working position for use as ramps for getting on and off vehicles.

6. The battery pack bottom cover (10) according to any one of claims 1 to 5, wherein, The battery pack bottom cover (10) also includes a locking member configured to lock the first plate (11) and the second plate (12) in the first working position.

7. The battery pack bottom cover (10) according to any one of claims 1 to 6, wherein, The battery pack bottom cover (10) also includes: A drive unit configured to drive the first board (11) and the second board (12) to switch between a first working position and a second working position; and A control unit configured to control the operation of the drive unit.

8. The battery pack bottom cover (10) according to any one of claims 1 to 7, wherein, The first plate (11) and the second plate (12) are configured to switch between the first working position and the second working position together and separately; and / or The surfaces of the first plate (11) and the second plate (12) facing upward when in the second working position are anti-slip surfaces that have undergone anti-slip treatment.

9. A battery pack (100) comprising a battery module (20) and a battery pack bottom cover (10) according to any one of claims 1 to 8.

10. A vehicle (200) comprising a battery pack underbody (10) according to any one of claims 1 to 8 or a battery pack (100) according to claim 9.

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