Protection plate device for lithium battery electric vehicle

Abstract

The utility model relates to the technical field of lithium battery electric vehicles, in particular to a protection plate device for a lithium battery electric vehicle, which comprises a bottom plate for protecting a lithium battery of the electric vehicle, a plurality of mounting parts are arranged on the bottom plate, mounting holes are formed in the mounting parts, and a plurality of fasteners are slidably arranged in the mounting holes. The interior of the mounting hole is provided with a tight supporting assembly used for controlling the multiple buckles to expand synchronously, and a bolt is inserted into the mounting hole. The tight supporting assembly comprises an air bag arranged between the multiple buckling pieces. The automobile bolt fastening device has the advantages that by arranging the fastening pieces, the tight supporting assembly and the restraining mechanism, firstly, the air bag can be used for tightly wrapping the bolt, so that the bolt is prevented from loosening due to vibration, and the risk that the bolt falls off after long-term driving is avoided; the bottom plate can be separated from the vehicle body more conveniently, and the problem that the buckle piece is damaged due to improper operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery electric vehicles, in particular to a protection board device for a lithium battery electric vehicle. Background Art

[0002] A lithium battery electric vehicle is an electric vehicle that uses a lithium-ion battery as an energy storage device. This type of electric vehicle has become very popular in recent years because lithium batteries have a higher energy density and a longer lifespan compared to other types of batteries. They are generally lighter and more compact than traditional lead-acid batteries or nickel-metal hydride batteries, and thus can provide better performance and longer endurance.

[0003] During the assembly process of the body bottom guard plate, bolts and welding nuts are usually used for assembly. For example, in a bottom guard plate installation structure disclosed in Chinese Patent Publication No. CN216994574U, this bottom guard plate installation structure connects and installs the sheet metal hole and the bottom guard plate through the setting of a clamping unit and bolts. The clamping unit is pre-inserted into the sheet metal hole to form a pre-clamping during installation, enabling the operator to perform other operations such as taking bolts subsequently, and the work is more flexible; when fixing the bolts, due to the existence of pre-clamping, there is no need to hold by hand additionally during operation, and the on-site operation is more convenient, which can effectively improve efficiency and save working hours.

[0004] However, compared with the existing technologies in related fields, firstly, when disassembling, the staff needs to use a relatively large force to separate the buckle from the sheet metal hole, and at the same time, the buckle may be damaged due to improper operation during separation. Once the buckle is damaged, it will affect the installation of the bottom plate. Secondly, when the vehicle is running, the body will vibrate due to bumps, and the vibration generated by the vibration will cause the bolts to loosen. Therefore, there is a risk of bolt detachment after long-term driving, which poses a certain safety hazard. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology, solve the problems mentioned in the background art, and provide a protection board device for a lithium battery electric vehicle.

[0006] The purpose of the utility model is achieved through the following technical solutions: A protection board device for a lithium battery electric vehicle includes a bottom plate for protecting the lithium battery of the electric vehicle. Multiple installation parts are provided on the bottom plate, and installation holes are opened on the installation parts. A plurality of buckle parts are slidably arranged inside the installation holes, and a tightening component for controlling the synchronous expansion of the plurality of buckle parts is arranged inside the installation holes. A bolt is inserted into the installation holes; the tightening component includes an airbag arranged between the plurality of buckle parts. One side of the bottom of the airbag is fixedly provided with an air nozzle, and installation grooves are opened on the installation parts corresponding to the positions of the air nozzles. A constraint mechanism for controlling the closing of the air nozzle and slow exhaust is fixedly arranged inside the installation grooves.

[0007] The shapes of multiple buckle parts are all in the shape of "J", and "J"-shaped grooves are provided at the positions of the installation parts corresponding to the buckle parts, and both sides of the buckle parts are in close contact with the "J"-shaped grooves.

[0008] The protruding part of the buckle part and the "J"-shaped groove are connected by elastic parts in a cooperative manner, and the airbag is arranged at the sunken part of the buckle part.

[0009] The materials of the airbag and the air nozzle are both rubber.

[0010] The restraint mechanism includes a fixing part fixedly arranged inside the installation groove, and a first clamping groove and a second clamping groove are provided on the fixing part.

[0011] The first clamping groove is a straight groove, the second clamping groove is an arc-shaped groove, the width of the first clamping groove is smaller than the diameter of the second clamping groove, the first clamping groove is used to control the closing of the air nozzle, and the second clamping groove is used to control the slow exhaust of the air nozzle.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] For the protection plate device used in the lithium battery electric vehicle, by setting the buckle part, the tightening component and the restraint mechanism, firstly, the airbag can tightly wrap the bolt, thereby avoiding the loosening of the bolt due to vibration and the risk of bolt detachment after long-term driving. Secondly, the slow exhaust of the airbag can make multiple buckle parts automatically gather together, making it more convenient to separate the bottom plate from the vehicle body and avoiding the problem of damage to the buckle parts due to improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of the bottom plate of the present utility model;

[0016] Figure 2 It is a state diagram when the installation part of the present utility model is assembled with the vehicle body;

[0017] Figure 3 It is a schematic structural diagram of the bolt of the present utility model;

[0018] Figure 4 It is a state diagram when the buckle part of the present utility model expands outwards;

[0019] Figure 5 It is a state diagram when the buckle parts of the present utility model approach each other;

[0020] Figure 6 Structural schematic diagram of the installation groove of the present utility model;

[0021] Figure 7 Split structural schematic diagram of the fixing member and the air nozzle of the present utility model.

[0022] In the figure: 1, bottom plate; 2, installation part; 3, installation hole; 4, buckle part; 401, elastic part; 5, tightening assembly; 501, airbag; 502, air nozzle; 6, bolt; 7, installation groove; 8, constraint mechanism; 801, fixing member; 802, first card slot; 803, second card slot; 9, U-shaped groove. Specific embodiments

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] The additional aspects and advantages of the present utility model will be further given in the following description with reference to the drawings, and some will become obvious from the following description, or will be understood through the practice of the present utility model.

[0026] Such as Figures 1 to 7As shown in the figure, a protection board device for a lithium battery electric vehicle includes a bottom plate 1 for protecting the lithium battery of the electric vehicle. A plurality of mounting parts 2 are provided on the bottom plate 1, and mounting holes 3 are opened on the mounting parts 2. A plurality of buckle parts 4 are slidably arranged inside the mounting holes 3. A tightening component 5 for controlling the synchronous expansion of the plurality of buckle parts 4 is arranged inside the mounting holes 3. A bolt 6 is inserted into the mounting holes 3. The tightening component 5 includes an airbag 501 arranged between the plurality of buckle parts 4. One side of the bottom of the airbag 501 is fixedly provided with an air nozzle 502. Mounting grooves 7 are opened on the mounting parts 2 corresponding to the positions of the air nozzles 502. A constraint mechanism 8 for controlling the closing of the air nozzle 502 and slow air exhaust is fixedly arranged inside the mounting grooves 7.

[0027] As Figures 3 to 5 shown in the figure, the shapes of the plurality of buckle parts 4 are all in the shape of a capital "J". J-shaped grooves 9 are opened on the mounting parts 2 corresponding to the positions of the buckle parts 4. Both sides of the buckle parts 4 are in contact with the J-shaped grooves 9. When the pressure of the airbag 501 is less than the elastic force of the elastic parts 401, the plurality of elastic parts 401 will simultaneously cause the plurality of buckle parts 4 to gather together. At this time, the staff can separate the bottom plate 1 from the vehicle body with a relatively small force.

[0028] As Figures 3 to 5 shown in the figure, the protruding parts of the buckle parts 4 and the J-shaped grooves 9 are connected by elastic parts 401 in cooperation. The airbag 501 is arranged in the concave parts of the buckle parts 4. The air nozzle 502 inflates the plurality of airbags 501 in sequence, so that the airbag 501 controls the synchronous expansion of the plurality of buckle parts 4.

[0029] As Figures 3 to 7 shown in the figure, the constraint mechanism 8 includes a fixing part 801 fixedly arranged inside the mounting groove 7. A first clamping groove 802 and a second clamping groove 803 are opened on the fixing part 801. The first clamping groove 802 is a straight groove, and the second clamping groove 803 is an arc-shaped groove. The width of the first clamping groove 802 is smaller than the diameter of the second clamping groove 803. The first clamping groove 802 is used to control the closing of the air nozzle 502, and the second clamping groove 803 is used to control the slow air exhaust of the air nozzle 502. The materials of the airbag 501 and the air nozzle 502 are both rubber. On the one hand, the rubber airbag 501 can tightly wrap the bolt 6, thereby preventing the bolt 6 from loosening due to vibration. On the other hand, the rubber air nozzle 502 can cooperate with the first clamping groove 802 to achieve closing and cooperate with the second clamping groove 803 to achieve slow air exhaust (as Figure 7 shown in the figure).

[0030] The working process is as follows:

[0031] S1. As Figures 1 to 5As shown, during installation, the buckles on the installation part 2 are docked with the sheet metal holes on the vehicle body in sequence, and then the air bags 501 are inflated through the air nozzles 502 in sequence, so that the air bags 501 control the synchronous expansion of the multiple buckle parts 4 (at this time, the buckle parts 4 will compress the elastic parts 401);

[0032] S2. As Figure 7 shown, after inflation, the air nozzles 502 are inserted into the first card slots 802, and the first card slots 802 can be used to control the closing of the air nozzles 502, thereby completing the pre-clamping of the bottom plate 1;

[0033] S3. As Figures 1 to 5 shown, after the pre-clamping of the bottom plate 1 is completed, the bolts 6 are used to be threadedly connected with the vehicle body through the air bags 501. At this time, the air bags 501 can tightly wrap the bolts 6, thereby preventing the bolts 6 from loosening due to vibration;

[0034] S4. As Figures 1 to 7 shown, when the bottom plate 1 needs to be disassembled, the bolts 6 are removed, and then the multiple air nozzles 502 are moved to the second card slots 803 in sequence. At this time, the air nozzles 502 can slowly discharge the gas inside the air bags 501. After that, the staff can wait for the air bags 501 to exhaust. When the pressure of the air bags 501 is less than the elastic force of the elastic parts 401, the multiple elastic parts 401 will simultaneously cause the multiple buckle parts 4 to gather together. At this time, the staff can use a smaller force to separate the bottom plate 1 from the vehicle body.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A protection plate device for a lithium battery electric vehicle, characterized in that: The invention comprises a bottom plate (1) for protecting a lithium battery of an electric vehicle, wherein the bottom plate (1) is provided with a plurality of mounting parts (2), each of the mounting parts (2) is provided with a mounting hole (3), each of the mounting holes (3) is slidably provided with a plurality of fasteners (4), a tightening assembly (5) for controlling the synchronous expansion of the plurality of fasteners (4) is provided inside the mounting hole (3), and a bolt (6) is inserted inside the mounting hole (3); The tightening assembly (5) comprises an air bag (501) arranged between a plurality of the buckling parts (4); an air nozzle (502) is fixedly provided on one side of the bottom of the air bag (501); a mounting groove (7) is provided at a position of the mounting portion (2) corresponding to the air nozzle (502); a restraining mechanism (8) for controlling the closing and slow exhaust of the air nozzle (502) is fixedly provided inside the mounting groove (7).

2. A protection plate device for a lithium battery electric vehicle according to claim 1, characterized in that: The plurality of snap fasteners (4) are all in the shape of an “X”, and the mounting portion (2) is provided with an “X”-shaped groove (9) at a position corresponding to the snap fastener (4), and two side surfaces of the snap fastener (4) are in contact with the “X”-shaped groove (9).

3. A protection plate device for a lithium battery electric vehicle according to claim 2, characterized in that: The raised portion of the buckle (4) is cooperatively connected with the X-shaped groove (9) via an elastic member (401), and the airbag (501) is arranged at the recessed portion of the buckle (4).

4. A protection plate device for a lithium battery electric vehicle according to claim 1, characterized in that: The air bag (501) and the air nozzle (502) are both made of rubber.

5. A protection plate device for a lithium battery electric vehicle according to claim 4, characterized in that: The restraining mechanism (8) comprises a fixing member (801) fixedly arranged inside the mounting groove (7), and a first clamping groove (802) and a second clamping groove (803) are provided on the fixing member (801).

6. A protection plate device for a lithium battery electric vehicle according to claim 5, characterized in that: The first slot (802) is a straight slot, the second slot (803) is an arcuate slot, the width of the first slot (802) is smaller than the diameter of the second slot (803), the first slot (802) is used to control the air nozzle (502) to close, and the second slot (803) is used to control the air nozzle (502) to exhaust slowly.

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