Quick dismounting device for battery pack of new energy automobile

Abstract

The utility model discloses a quick release device for a battery pack of a new energy automobile. The quick release device comprises a battery pack body and a fixing frame, the fixing frame comprises a transverse fixing rod and a longitudinal slide way, quick-release flanges on two sides of the battery pack are provided with mounting holes, wedge-shaped buckles are rotatably mounted on the longitudinal slide way through a rotating shaft, the buckles are in a right trapezoid shape, guide slopes of the buckles face the insertion direction, and locking edges of the buckles are matched with the mounting holes. The rotating shaft is connected with a fixing frame through a crank and a sliding rod, the fixing frame is arranged on pull rods, and the pull rods are in linkage through connecting rods. When the battery pack is inserted, the guide inclined surface pushes the buckle to avoid, and the reset spring drives the buckle to be clamped into the mounting hole with the gradually-changed width to be locked after the buckle is in place; when the connecting rod is pulled, the buckle is rotated and unlocked through the linkage mechanism. According to the device, automatic guiding and accurate locking are achieved through a wedge-shaped structure, the dismounting and mounting efficiency is improved through a linkage pull rod, the vibration resistance is enhanced through mirror symmetry buckles, the device is suitable for rapid replacement of new energy automobile batteries, and the problem that in the prior art, buckle operation is tedious is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile technical field, concretely is a new energy automobile battery package quick release device. BACKGROUND

[0002] The battery replacement mechanism of the new energy automobile refers to a mechanical device and system for realizing the quick replacement of the power battery, and mainly solves the problems of low energy supplement efficiency and range anxiety of the pure electric vehicle. The core goal is to let the user complete the replacement of the "battery out of power" and the "battery full of power" in a short time through the standardized battery design, and realize the convenient experience similar to the refueling of the fuel vehicle.

[0003] In the prior art, a new energy automobile battery package automatic quick release device with publication number "CN216300842U" is disclosed, which comprises a support plate, a parking plate fixedly connected to the top end of the support plate, a mounting frame fixedly connected to the top end of the support plate at four corners, an electric motor fixedly connected to the top end of the mounting frame, a screw rod fixedly connected to the output end of the electric motor, a sliding groove provided on the side of the mounting frame facing the parking plate, a sliding block slidingly connected to the inner side of the sliding groove, a lifting block fixedly connected to the end of the sliding block facing the parking plate, a supporting plate provided in the middle of the parking plate, a lifting mechanism provided at the bottom end of the supporting plate, a walking mechanism provided at the bottom end of the lifting mechanism, a mounting plate provided at the bottom end of the walking mechanism, a track provided at the top end of the mounting plate, and a stop block fixedly connected to the right side of the top end of the mounting plate. The utility model can improve the disassembly efficiency of the battery package, and can move the battery package away for convenient maintenance of the battery package.

[0004] However, the prior art still has great deficiencies, such as:

[0005] The traditional quick release device adopts single buckle or dispersed buckle design, and each buckle needs to be operated one by one when unlocking or locking, which takes a long time. Especially in the multi-buckle scene, manual step-by-step operation is easy to miss or have sequence errors, which leads to uneven force on the battery package and low disassembly and assembly efficiency, and cannot meet the timeliness requirements of the quick battery replacement scene. In addition, the dispersed buckle lacks a linkage mechanism, and it is difficult to ensure synchronous action, which may cause the whole disassembly and assembly to fail due to the jamming of individual buckles. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a new energy automobile battery package quick release device to solve the problems in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A new energy automobile battery package quick release device, comprising a battery package body and a fixing frame, the fixing frame comprises a plurality of transverse fixing rods and longitudinal slides, the transverse fixing rods are fixedly connected with the longitudinal slides;

[0009] The quick-release flange is provided with a plurality of mounting holes;

[0010] A plurality of rotating shafts are arranged on the longitudinal slide, and a wedge-shaped buckle is arranged on each rotating shaft, and the wedge-shaped buckle is matched with the mounting hole;

[0011] One end of the rotating shaft is fixedly provided with a crank, and a sliding rod is fixedly arranged on the crank;

[0012] A plurality of pull rods are arranged on the fixing frame, a plurality of fixing frames are fixedly arranged on the pull rod, and the sliding rod is arranged in the fixing frame;

[0013] When the pull rod is pulled, the pull rod drives the plurality of fixing frames to slide, the sliding rod on the crank drives the rotating shaft to rotate under the constraint of the fixing frame, and the rotating shaft drives the wedge-shaped buckle to rotate, so that the wedge-shaped buckle rotates away from the mounting hole.

[0014] Preferably, the width of the mounting hole and the wedge-shaped buckle gradually increases along the direction in which the battery pack body enters the longitudinal slide;

[0015] The plurality of wedge-shaped buckles are arranged in a mirror image on the upper and lower surfaces of the longitudinal slide.

[0016] Preferably, a connecting rod is fixedly arranged between the plurality of pull rods, the connecting rod is provided with a bending part, and a protective sleeve is fixedly arranged on the position of the bending part of the connecting rod.

[0017] Preferably, a handle is arranged on the battery pack body.

[0018] Preferably, a limiting plate is fixedly arranged on the fixing frame, the limiting plate is arranged perpendicular to the longitudinal slide and has a height lower than the thickness of the battery pack body, and a buffer pad is fixedly arranged on the limiting plate.

[0019] Preferably, a limiting column is fixedly arranged on the pull rod, a return spring is sleeved on the position of the pull rod between the limiting column and the transverse fixing rod, and the return spring is a compression spring, and the two ends of the return spring abut against the limiting column and the transverse fixing rod, respectively.

[0020] Preferably, a plurality of rollers are rotatably arranged on the transverse fixing rod, the rolling direction of the rollers is consistent with the direction in which the battery pack body enters the longitudinal slide, and the outer circumferential surface of the roller protrudes from the inner side surface of the transverse fixing rod.

[0021] Compared with the prior art, the battery pack body has the advantages that:

[0022] 1. A plurality of pull rods are welded to form a whole linkage assembly through connecting rods, when pulling the connecting rods, all wedge-shaped buckles are synchronously rotated through the "pull rod - fixed frame - sliding rod - crank" transmission chain, and the unlocking or locking action of all buckles can be quickly completed. Compared with the traditional single-buckle independent operation mode, the time-consuming of step-by-step operation is greatly reduced, and it is especially suitable for fast battery replacement scenes.

[0023] 2. The guide slope of the wedge-shaped buckle and the gradually changing width of the mounting hole are designed to automatically push the buckle away when the battery pack is inserted, avoiding the problem of early buckling of the traditional buckle. When not fully inserted, the narrower mounting hole entrance cannot cooperate with the wider buckle locking edge, eliminating the risk of "virtual locking"; after reaching the position, the buckle and the mounting hole are accurately aligned in width, and are automatically locked through the reset spring, realizing "insertion locking", and improving the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the whole device of the utility model;

[0025] Figure 2 It is a three-dimensional structure schematic view of the fixed frame of the utility model;

[0026] Figure 3 It is a three-dimensional structure schematic view of the battery pack body of the utility model;

[0027] Figure 4 It is a three-dimensional structure schematic view of the pull rod of the utility model;

[0028] Figure 5 It is a three-dimensional structure schematic view of the A place in the utility model Figure 4

[0029] Figure 6 It is a three-dimensional structure schematic view of the wedge-shaped buckle of the utility model;

[0030] Figure 7 It is a three-dimensional structure schematic view of the wedge-shaped buckle and the mounting hole of the utility model;

[0031] Figure 8 It is a three-dimensional structure schematic view of the connecting rod of the utility model.

[0032] In the figure: 1, battery pack body; 2, fixed frame; 3, transverse fixed rod; 4, longitudinal slide; 5, quick release flange; 6, mounting hole; 7, rotating shaft; 8, wedge-shaped buckle; 9, crank; 10, sliding rod; 11, pull rod; 12, fixed frame; 13, connecting rod; 14, bending part; 15, protective sleeve; 16, handle; 17, limiting plate; 18, buffer pad; 19, limiting column; 20, reset spring; 21, roller. DETAILED DESCRIPTION

[0033] ​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, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0034] Please refer to Figures 1-8 The utility model provides a technical scheme:

[0035] Embodiment one:

[0036] The utility model provides a kind of new energy automobile battery pack quick release device, core improvement is in the form of wedge buckle 8 by upgrading buckle, and the guiding mechanism when battery pack is inserted is optimized, specific structure is as follows:

[0037] Fixed frame 2 is composed of transverse fixed rod 3 and longitudinal slide 4, and the fixed frame 12 is provided with screw holes, which is connected with the frame, and since it is not the focus of the present application, it will not be described here, and the fixed frame 12 is a mature prior art;

[0038] Transverse fixed rod 3 and longitudinal slide 4 are perpendicular to each other and are welded to form a rectangular frame. Rectangular mounting holes 6 are formed in the quick release flanges 5 on both sides of the battery pack body 1. The inner side of the longitudinal slide 4 is rotatably connected to the shaft 7 through a bearing. The wedge buckle 8 is fixedly connected to the shaft 7.

[0039] The wedge buckle 8 is in the form of a right-angled trapezoidal structure, with a sloping side as a guide slope (towards the direction of battery pack insertion) and a right-angled side as a locking side. When the battery pack is not inserted, the wedge buckle 8 remains in a horizontal state under the action of the return spring 20, and the locking side is inserted into the mounting hole 6 to achieve fixation. When the battery pack is inserted, the front end of the quick release flange 5 contacts the guide slope of the wedge buckle 8, pushing the buckle to rotate upward around the shaft 7 (inclined towards the inner side of the slide), allowing the battery pack to pass.

[0040] One end of the shaft 7 extending out of the longitudinal slide 4 is fixedly connected to the crank 9, and the crank 9 is vertically provided with a slide rod 10 at its end, which is inserted into the horizontal sliding groove of the fixed frame 12. The fixed frame 12 is fixed to the pull rod 11 by welding, and the pull rod 11 is transversely arranged in the transverse fixed rod 3 of the fixed frame 2, and a plurality of pull rods 11 are connected by the connecting rod 13. The bent part 14 of the connecting rod 13 is sleeved with a rubber protective sleeve 15, which is convenient for the operator to pull transversely. The limit column 19 is fixedly arranged on the pull rod 11, and the return spring 20 is sleeved on the pull rod 11 between the limit column 19 and the transverse fixed rod 3.

[0041] When the battery pack needs to be removed, the connecting rod 13 is pulled to make the pull rod 11 slide outward:

[0042] When the fixed frame 12 moves outward with the pull rod 11, the sliding groove forces the sliding rod 10 to move outward synchronously, which drives the crank 9 to rotate around the rotating shaft 7, and further rotates the wedge-shaped buckle 8 upward to the inclined state (completely separated from the mounting hole 6).

[0043] At this time, the battery pack body 1 loses the constraint and can be directly pulled out outward.

[0044] Automatic guiding and locking mechanism:

[0045] The battery pack insertion process does not need to manually operate the buckle, and the wedge-shaped structure is used to realize automatic alignment and locking:

[0046] Guiding stage:

[0047] When the battery pack body 1 is inserted along the longitudinal slide 4, the front end of the quick-release flange 5 contacts the guiding slope of the wedge-shaped buckle 8, and the inclined angle of the slope generates an upward component force, which pushes the buckle to rotate around the rotating shaft 7, so that the buckle is lifted to the inner side of the slide to avoid blocking the battery pack from entering.

[0048] Locking stage:

[0049] When the mounting hole 6 of the quick-release flange 5 completely passes the wedge-shaped buckle 8, the reset spring 20 (a compression spring sleeved on the pull rod 11) pushes the pull rod 11 to reset inward, and the crank 9 drives the wedge-shaped buckle 8 to rotate back to the horizontal position, and the locking edge accurately falls into the mounting hole 6.

[0050] Example two:

[0051] The wedge-shaped buckle 8 is symmetrically arranged on the upper and lower surfaces of the longitudinal slide 4, and the width of the mounting hole 6 and the wedge-shaped buckle 8 gradually increases along the direction in which the battery pack body 1 enters the longitudinal slide 4;

[0052] Through such a setting, when the battery pack body 1 just enters the longitudinal slide 4, the wider wedge-shaped buckle 8 cannot enter the narrower mounting hole 6, until the battery pack body 1 reaches the final position, the wedge-shaped buckle 8 and the mounting hole 6 with the same width coincide, and the wedge-shaped buckle 8 can enter the mounting hole 6 and be clamped therein. Through such a setting, the influence of the wedge-shaped buckle 8 on the battery pack installation process is reduced.

[0053] The rollers 21 are uniformly distributed on the inner side of the transverse fixing rod 3, the axis of the rollers 21 is consistent with the direction of the battery pack insertion, and the outer circumferential surface of the rollers 21 protrudes 1-2 mm from the surface of the fixing rod, so that the sliding friction is changed to rolling friction when the battery pack is inserted, and the insertion force is reduced.

[0054] Impact protection and buffering:

[0055] The limiting plate 17 at the top of the fixing frame 2 is arranged perpendicular to the longitudinal slide 4 and has a height lower than the thickness of the battery pack body 1. The buffer pad 18 (polyurethane sponge) on the inner side of the limiting plate 17 provides elastic support when the battery pack is inserted to the bottom, avoiding hard collision.

[0056] Convenient operation:

[0057] The handle 16 on the side of the battery pack body 1 is wrapped with anti-slip rubber, and the two ends of the handle 16 are fixed to the body by bolts. The operator can easily lift the battery pack by the handle 16 and realize single-handed alignment and insertion by using the guide slope of the wedge-shaped buckle 8.

[0058] Working principle summary

[0059] Insertion and locking: when the battery pack is inserted, the guide slope of the wedge-shaped buckle 8 automatically avoids, and the reset spring 20 drives the buckle to lock after being in place, without manual intervention;

[0060] Pulling and disassembling: horizontally pulling the connecting rod 13, the wedge-shaped buckle 8 is quickly lifted through the crank 9 - slide rod 10 linkage mechanism, and the unlocking is quickly completed;

[0061] Working principle:

[0062] The operator lifts the battery pack by the anti-slip rubber handle 16 on the side of the battery pack body 1, aligns it with the longitudinal slide 4 of the fixing frame 2, and aligns the quick-release flanges 5 on both sides with the upper and lower wedge-shaped buckles 8 of the longitudinal slide 4. At this time, the wedge-shaped buckle 8 remains in a horizontal state under the action of the reset spring 20, and the locking edge faces the inner side of the slide.

[0063] Insertion and guidance stage

[0064] Slowly push the battery pack along the longitudinal slide 4, and the front end of the quick-release flange 5 first contacts the guide slope of the wedge-shaped buckle 8:

[0065] Because the width of the installation hole 6 (rectangular hole, the width gradually changes from the entrance to the inner side) is narrow at the entrance, and the initial width of the locking edge of the wedge-shaped buckle 8 is wide, the buckle cannot be directly inserted into the installation hole 6;

[0066] The quick-release flange 5 pushes the guide slope to generate an upward force, forcing the wedge-shaped buckle 8 to rotate around the rotating shaft 7 to the inner side of the slide (the top buckle is lifted upward, and the bottom buckle is pressed downward), to avoid hard collision.

[0067] Depth positioning and automatic locking

[0068] As the battery pack is completely inserted to the final position, the inner width of the installation hole 6 on the quick-release flange 5 is consistent with the end width of the locking edge of the wedge-shaped buckle 8. At this time:

[0069] Reset spring 20 (set in compression spring of pull rod 11) releases elastic force, and pushes pull rod 11 to reset inward;

[0070] Pull rod 11 drives all cranks 9 to rotate synchronously through connecting rod 13, so that wedge-shaped buckle 8 rotates back to horizontal state, and locking edge falls into the inside of mounting hole 6, forming wedge-shaped tight fit;

[0071] Wedge-shaped buckles 8 are symmetrically arranged above and below, and are buckled into mounting hole 6 at the same time, so that the battery pack is stably locked.

[0072] Buffering and positioning

[0073] When the battery pack is inserted to the bottom, the polyurethane sponge buffer pad 18 of the top limiting plate 17 contacts the top surface of the battery pack, absorbs the insertion impact, and at the same time, the limiting plate 17 limits the excessive insertion of the battery pack, ensuring the accurate butt joint of the electrical interface.

[0074] Battery pack removal process

[0075] Unlocking operation

[0076] The operator holds the rubber protective sleeve 15 in the middle of the connecting rod 13, and pulls the connecting rod 13 horizontally, driving the pull rod 11 to slide outward:

[0077] The pull rod 11 forces the sliding rod 10 to translate outward along the horizontal sliding groove of the fixed frame 12 through the fixed frame 12 welded on it;

[0078] The sliding rod 10 drives the crank 9 to rotate around the rotating shaft 7, and then makes the wedge-shaped buckle 8 rotate upward to the inclined state, and the locking edge completely separates from the mounting hole 6.

[0079] Quick disassembly

[0080] After the wedge-shaped buckle 8 is unlocked, the battery pack loses the constraint, and the operator directly pulls the battery pack outward through the handle 16, so that it exits along the longitudinal sliding groove 4:

[0081] The roller 21 inside the transverse fixed rod 3 converts sliding friction into rolling friction, and the insertion force is reduced by about 50%, so that the disassembly process is more labor-saving;

[0082] The upper and lower wedge-shaped buckles 8 remain in the inclined state to avoid interference with the quick-release flange 5 when exiting.

[0083] When not fully inserted, the width of the mounting hole 6 is smaller than the width of the buckle locking edge, and the reset spring 20 cannot push the buckle to be buckled, eliminating the risk of "false locking" and ensuring that it will be locked only after being installed in place.

[0084] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new energy automobile battery pack quick release device, comprising a battery pack body (1) and a fixing frame (2), characterized in that: The fixing frame (2) comprises a plurality of transverse fixing rods (3) and longitudinal slides (4), the transverse fixing rods (3) are fixedly connected with the longitudinal slides (4); The battery pack body (1) is provided with a quick-release flange (5) on both sides, a plurality of mounting holes (6) are formed in the quick-release flange (5); A plurality of rotating shafts (7) are arranged on the longitudinal slides (4), a plurality of wedge-shaped buckles (8) are arranged on the rotating shafts (7), and the wedge-shaped buckles (8) are matched with the mounting holes (6); One end of the rotating shaft (7) is fixedly provided with a crank (9), and the crank (9) is fixedly provided with a sliding rod (10); A plurality of pull rods (11) are arranged on the fixing frame (2), a plurality of fixed frames (12) are fixedly arranged on the pull rods (11), and the sliding rod (10) is arranged in the fixed frame (12); When the pull rod (11) is pulled, the pull rod (11) drives a plurality of fixed frames (12) to slide, the sliding rod (10) on the crank (9) drives the rotating shaft (7) to rotate under the constraint of the fixed frame (12), and the rotating shaft (7) drives the wedge-shaped buckle (8) to rotate, so that the wedge-shaped buckle (8) rotates away from the mounting hole (6).

2. The quick release device for a new energy vehicle battery pack according to claim 1, characterized in that: The widths of the mounting holes (6) and the wedge-shaped buckles (8) gradually increase along the direction in which the battery pack body (1) enters the longitudinal slides (4); A plurality of wedge-shaped buckles (8) are arranged in a mirror image manner on the upper and lower surfaces of the longitudinal slides (4).

3. The quick release device for a new energy vehicle battery pack according to claim 2, characterized in that: A connecting rod (13) is fixedly arranged between a plurality of pull rods (11), the connecting rod (13) is provided with a bending portion (14), and a protective sleeve (15) is fixedly arranged on the position of the bending portion (14) of the connecting rod (13).

4. The quick release device for a new energy vehicle battery pack according to claim 3, characterized in that: A handle (16) is arranged on the battery pack body (1).

5. The quick release device for a new energy vehicle battery pack according to claim 2, characterized in that: A limiting plate (17) is fixedly arranged on the fixing frame (2), the limiting plate (17) is arranged perpendicular to the longitudinal slides (4) and has a height lower than the thickness of the battery pack body (1), and a buffer pad (18) is fixedly arranged on the limiting plate (17).

6. The quick release device for a new energy vehicle battery pack according to claim 2, characterized in that: A limiting column (19) is fixedly arranged on the pull rod (11), and a return spring (20) is sleeved on the position between the limiting column (19) and the transverse fixing rod (3) of the pull rod (11), the return spring (20) is a compression spring, and the two ends of the return spring (20) abut against the limiting column (19) and the transverse fixing rod (3) respectively.

7. The quick release device for a new energy vehicle battery pack according to claim 1, characterized in that: A plurality of rollers (21) are rotatably arranged on the transverse fixing rod (3), the rolling direction of the rollers (21) is consistent with the direction in which the battery pack body (1) enters the longitudinal slides (4), and the outer circumferential surface of the roller (21) protrudes from the inner side surface of the transverse fixing rod (3).

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