Battery protection device for electric wheelchair

Abstract

The utility model discloses a battery protection device for an electric wheelchair, which comprises a protection shell and rear buffer pads, the rear buffer pads are adhered to the inner rear wall of the protection shell at equal intervals, the front surfaces of the rear buffer pads are fixedly connected with rear buffer strips, and an outer buffer pad is adhered to the inner side wall of the protection shell. According to the utility model, the front end cover and the protective shell can form an outer-layer rigid protection mechanism together so as to protect the periphery of the battery main body, and the outer buffer pad, the front buffer strip and the rear buffer strip form an inner-layer flexible protection mechanism, so that each surface of the battery main body can be protected; the outer-layer rigid protection mechanism makes contact with the outside, the battery body can be prevented from being directly damaged, then all faces of the battery body are protected through the inner-layer flexible protection mechanism, the buffering and damping effects can be achieved through cooperation of a spring and a buffering air bag, impact on the battery body is reduced, and the service life of the battery body is prolonged. And the battery main body is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery protection device, concretely is battery protection device for electric wheelchair belongs to battery protection device technical field. BACKGROUND

[0002] As an important auxiliary travel tool, the user group of electric wheelchair mainly concentrates in the crowd who has the disability or the crowd who is inconvenient to move. This crowd depends on electric wheelchair to improve their quality of life, realizes more autonomous and convenient movement. However, the normal operation of electric wheelchair cannot leave its core component - the support of battery. The performance and safety of battery are directly related to the use effect and user experience of electric wheelchair.

[0003] At present, the battery design of part electric wheelchair has certain deficiency in safety protection, specifically, when the battery suffers from collision, impact and other external damage, often lacks the necessary protection mechanism to resist these potential threats, undoubtedly increases the potential risk of battery in the use process, once the battery is impacted by external force, the internal electrolyte, electrode and other key components can be damaged, thereby causing the decline of battery performance even failure, for this, a battery protection device for electric wheelchair is proposed. SUMMARY

[0004] The utility model discloses a battery protection device for electric wheelchair, to solve one of the problems in the background art.

[0005] The utility model discloses a battery protection device for electric wheelchair, to solve one of the problems in the background art.

[0006] The front surface of the protection shell is provided with a buffer assembly.

[0007] The buffer assembly comprises a front end cover, a guide seat, a spring, a pressing plate, a front buffer strip and a buffer air bag.

[0008] The guide seat is fixedly connected to the rear surface of the front end cover, the front buffer strip is equidistantly bonded to the rear surface of the pressing plate, and the spring and the buffer air bag are located in the interior of the guide seat.

[0009] As a further preferred embodiment of the present technical solution, the two ends of the buffer air bag abut against the front surface of the pressing plate and the rear surface of the front end cover respectively.

[0010] As a further preferred of the technical solution: the inside of the protective shell is provided with a battery body, and the outer side wall of the battery body is attached to the inner side wall of the outer buffer pad.

[0011] As a further preferred of the technical solution: the front surface of the battery body is attached to the rear surface of the front buffer strip, and the rear surface of the battery body is attached to the front surface of the rear buffer strip.

[0012] As a further preferred of the technical solution: the front surface of the front end cover and the rear surface of the protective shell are fixedly connected with the radiating fins.

[0013] As a further preferred of the technical solution: two power interfaces are mounted on one side of the protective shell, and the electrically connected ends of the two power interfaces are electrically connected with the positive and negative poles of the battery body.

[0014] As a further preferred of the technical solution: a pressure relief valve is mounted on the lower surface of the protective shell, and the pressure relief valve is communicated with the protective shell.

[0015] As a further preferred of the technical solution: two mounting seats are fixedly connected on the two sides of the protective shell symmetrically, and a handle is mounted on the upper surface of the protective shell.

[0016] The utility model discloses the advantages: the utility model discloses through front end cover and protective shell can constitute the outer rigid protection mechanism together, to realize the peripheral protection of battery body, through the outer buffer pad, front buffer strip and rear buffer strip constitute the inner flexible protection mechanism, can protect each surface of battery body, when being subjected to collision, impact and other external harm, through the outer rigid protection mechanism and external contact, can avoid the direct harm of battery body, then through the inner flexible protection mechanism, each surface of battery body is protected, and then through the cooperation of spring and buffer air bag, can play the effect of buffering and shock attenuation, and further reduce the impact that battery body receives, avoid the damage of battery body. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for ordinary skilled person in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural exploded view of the utility model;

[0020] Figure 3 The utility model discloses a buffer assembly structure schematic view.

[0021] Figure 4 The utility model discloses a buffer assembly structure schematic view.

[0022] In the drawing: 101, buffer assembly;11, protective shell;12, rear buffer pad;13, rear buffer strip;14, outer buffer pad;15, battery main body;16, front end cover;17, guide seat;18, spring;19, pressing plate;20, front buffer strip;21, buffer air bag;22, pressure relief valve;23, fin;24, handle;25, power supply interface;26, mounting seat. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0024] EMBODIMENT

[0025] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of battery protection device for electric wheelchair, including protective shell 11 and rear buffer pad 12, rear buffer pad 12 equidistantly bonded to the inner rear wall of protective shell 11, the front surface of rear buffer pad 12 is fixedly connected with rear buffer strip 13, the inner side wall of protective shell 11 is bonded with outer buffer pad 14, rear buffer strip 13 and outer buffer pad 14 can protect battery main body 15 from different directions;

[0026] The front surface of protective shell 11 is installed with buffer assembly 101, the inside of protective shell 11 is provided with battery main body 15, buffer assembly 101 is used to limit the position of battery main body 15, simultaneously provides buffer for battery main body 15, when battery main body 15 suffers from collision, impact etc. external injury, protection can be provided by buffer assembly 101, to avoid that battery main body 15 is damaged;

[0027] Buffer assembly 101 includes front end cover 16, guide seat 17, spring 18, pressing plate 19, front buffer strip 20 and buffer air bag 21;

[0028] The guiding seat 17 is fixedly connected to the rear surface of the front end cover 16, the front buffer strip 20 is equidistantly bonded to the rear surface of the pressing plate 19, the spring 18 and the buffer air bag 21 are located inside the guiding seat 17, the outer side wall of the pressing plate 19 is slidingly connected to the inner side wall of the guiding seat 17, the front end cover 16 is installed on the front surface of the protective shell 11, and the front end cover 16 and the protective shell 11 are fixedly connected through screws, so that the front end cover 16 and the protective shell 11 can jointly constitute an outer protection mechanism and protect the battery main body 15.

[0029] In the embodiment, specifically, the two ends of the spring 18 abut against the front surface of the pressing plate 19 and the rear surface of the front end cover 16 respectively, the two ends of the buffer air bag 21 abut against the front surface of the pressing plate 19 and the rear surface of the front end cover 16 respectively, and the two ends of the buffer air bag 21 are fixedly connected to the pressing plate 19 and the front end cover 16 respectively, when the battery main body 15 is installed, the battery main body 15 is first placed into the protective shell 11, then the pressing plate 19 is inserted into the protective shell 11, the pressing plate 19 is attached to the battery main body 15 through the front buffer strip 20, and finally the front end cover 16 is connected to the protective shell 11.

[0030] The spring 18 pushes the pressing plate 19, the pressing plate 19 always generates a pushing force on the battery main body 15, and then the position of the battery main body 15 is limited, when an external damage such as collision or impact is caused, the spring 18 and the buffer air bag 21 can cooperate to achieve a buffering and damping effect.

[0031] In the embodiment, specifically, the outer side wall of the battery main body 15 is attached to the inner side wall of the outer buffer pad 14, the front surface of the battery main body 15 is attached to the rear surface of the front buffer strip 20, and the rear surface of the battery main body 15 is attached to the front surface of the rear buffer strip 13, the outer buffer pad 14, the front buffer strip 20 and the rear buffer strip 13 can protect each surface of the battery main body 15, and the outer buffer pad 14, the front buffer strip 20 and the rear buffer strip 13 are all made of polyurethane material.

[0032] In the embodiment, specifically, the front surface of the front end cover 16 and the rear surface of the protective shell 11 are fixedly connected with the heat dissipation fins 23, and the heat dissipation fins 23 can enhance the heat dissipation effect of the protection device.

[0033] The front end cover 16, the protective shell 11 and the heat dissipation fins 23 are all made of aluminum alloy material, so that good protection effect and good heat dissipation effect are provided.

[0034] In the embodiment, specifically, two power interfaces 25 are installed on one side of the protective shell 11, the electrically connected ends of the two power interfaces 25 are electrically connected to the positive and negative electrodes of the battery main body 15 respectively, and the power interfaces 25 can connect the battery main body 15 with the power supply port of the electric wheelchair.

[0035] In this embodiment, specifically: the lower surface of the protective shell 11 is provided with a pressure relief valve 22, the pressure relief valve 22 is communicated with the protective shell 11, when the internal pressure of the protective shell 11 reaches a certain threshold, the pressure relief valve 22 is automatically opened, thereby releasing the internal pressure, preventing the battery explosion.

[0036] In this embodiment, specifically: the two sides of the protective shell 11 are symmetrically and fixedly connected with two mounting seats 26, the mounting seats 26 facilitate the mounting of the protective shell 11 on the mounting rack of the electric wheelchair.

[0037] The upper surface of the protective shell 11 is provided with a handle 24, which facilitates the overall carrying of the battery body 15.

[0038] Working principle or structural principle, in use, first, the battery body 15 is placed into the protective shell 11, then the pressing plate 19 is inserted into the protective shell 11, the pressing plate 19 is attached to the battery body 15 through the front buffer strip 20, and finally the front end cover 16 is fixedly connected with the protective shell 11, at this time, the pressing plate 19 is pushed by the spring 18, the pressing plate 19 is always attached to the battery body 15 through the front buffer strip 20, the protective shell 11 is mounted on the battery mounting rack of the electric wheelchair through the mounting seat 26, the battery body 15 is connected with the power supply port of the electric wheelchair through the power supply interface 25, at this time, the battery body 15 can supply power to the electric wheelchair.

[0039] When subjected to external damage such as collision, impact, etc., the outer protection mechanism formed by the front end cover 16 and the protective shell 11 contacts the outside, which can avoid direct damage to the battery body 15, then the outer buffer pad 14, the front buffer strip 20 and the rear buffer strip 13 protect each surface of the battery body 15, and the cooperation of the spring 18 and the buffer air bag 21 can play a buffering effect, thereby reducing the impact on the battery body 15.

[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery protection device for an electric wheelchair, characterized in that, Including protective shell (11) and rear bumper pad (12), rear bumper pad (12) equidistantly bonded to the inner rear wall of protective shell (11), the front surface of rear bumper pad (12) is fixedly connected with rear bumper strip (13), the inner side wall of protective shell (11) is bonded with outer bumper pad (14); The front surface of the protective shell (11) is provided with a buffer assembly (101); The buffer assembly (101) comprises a front end cover (16), a guide seat (17), a spring (18), a pressing plate (19), a front bumper strip (20) and a buffer air bag (21); The guide seat (17) is fixedly connected to the rear surface of the front end cover (16), the front bumper strip (20) is equidistantly bonded to the rear surface of the pressing plate (19), the spring (18) and the buffer air bag (21) are both located in the interior of the guide seat (17), the outer side wall of the pressing plate (19) is slidingly connected to the inner side wall of the guide seat (17), the front end cover (16) is mounted to the front surface of the protective shell (11), and the two ends of the spring (18) are respectively abutted against the front surface of the pressing plate (19) and the rear surface of the front end cover (16).

2. The battery protection device for electric wheelchair according to claim 1, wherein The two ends of the buffer air bag (21) are respectively abutted against the front surface of the pressing plate (19) and the rear surface of the front end cover (16).

3. The battery protection device for electric wheelchair according to claim 1, wherein The inside of the protective shell (11) is provided with a battery body (15), and the outer side wall of the battery body (15) is attached to the inner side wall of the outer bumper pad (14).

4. The battery protection device for electric wheelchair according to claim 3, wherein The front surface of the battery body (15) is attached to the rear surface of the front bumper strip (20), and the rear surface of the battery body (15) is attached to the front surface of the rear bumper strip (13).

5. The battery protection device for electric wheelchair according to claim 1, wherein The front surface of the front end cover (16) and the rear surface of the protective shell (11) are both fixedly connected with a heat sink (23).

6. The battery protection device for electric wheelchair according to claim 2, wherein One side of the protective shell (11) is provided with two power interfaces (25), and the electrically connected ends of the two power interfaces (25) are respectively electrically connected with the positive and negative electrodes of the battery body (15).

7. The battery protection device for electric wheelchair according to claim 1, wherein The lower surface of the protective shell (11) is provided with a pressure relief valve (22), and the pressure relief valve (22) is communicated with the protective shell (11).

8. The battery protection device for electric wheelchair according to claim 1, wherein Both sides of the protective shell (11) are symmetrically fixedly connected with two mounting seats (26), and the upper surface of the protective shell (11) is provided with a handle (24).

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