High-precision battery pack four-side extrusion device

Abstract

The invention discloses a high-precision battery pack four-edge extrusion device which comprises a bracket assembly, a placement plate, a first positioning extrusion unit, a second extrusion positioning unit and a guide extrusion unit, the placing plate is fixed at the upper end of the bracket assembly and is used for placing a battery pack; the first positioning and extruding unit and the second positioning and extruding unit are respectively arranged on two width sides of the battery pack and are used for positioning a cooling plate in the width direction; the number of the guide extrusion units is two, and the two guide extrusion units are symmetrically arranged on the two sides of the length of the battery pack and used for controlling the installation straightness and perpendicularity of the cooling plate. And the internal stress of the battery pack is uniform, the opposite sides of the battery pack are flat, and the installation efficiency and the installation quality of the battery pack are improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery pack assembly, and in particular to a high-precision four-side extrusion device for a battery pack. Background Art

[0002] With the rapid development of the lithium-ion battery industry, battery packs are being used in more and more fields and their structural forms are diversified. Cooling and heat dissipation of battery cells have always been the focus of attention. Excessive temperature can lead to a series of serious consequences, including reduced battery performance and life, explosions and other serious disasters.

[0003] In order to solve the problem of battery pack heating, cooling plates are added to cool it down. The cooling plates need to be installed vertically, and the cooling plates need to be installed in both the length and width directions. Currently, when installing the cooling plates, problems such as the cooling plates being installed crookedly, the battery pack poles moving, the internal force of the battery pack being uneven, and the battery pack being misaligned on opposite sides are prone to occur, affecting production efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a high-precision four-side extrusion device for a battery pack, which can ensure that the cooling plate will not be skewed during the installation process, so that the battery pack poles will not move, the force inside the battery pack is uniform, and the opposite sides of the battery pack are flat, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision battery pack four-side extrusion device, comprising a bracket assembly, a placement plate, a first positioning extrusion unit, a second extrusion positioning unit and a guide extrusion unit;

[0006] The placement plate is fixed to the upper end of the bracket assembly and is used to place the battery pack;

[0007] The first positioning and pressing unit and the second positioning and pressing unit are respectively arranged on both sides of the length of the battery pack, and are used to position the cooling plate in the width direction;

[0008] The number of the guide extrusion units is two, and the two guide extrusion units are symmetrically arranged on both sides of the width of the battery pack to control the installation straightness and verticality of the cooling plate.

[0009] As a preferred technical solution of the present invention, the bracket assembly includes a frame and a base plate, and the base plate is fixed to the upper end of the frame.

[0010] As a preferred technical solution of the present invention, the lower end of the frame is evenly distributed with Fuma wheels.

[0011] As a preferred technical solution of the present invention, the first positioning and extrusion unit and the second positioning and extrusion unit each include a motor rear mounting bracket, a motor front mounting bracket, a push rod motor, a moving plate, a support block, a pointer and a scale;

[0012] The rear mounting bracket of the motor is fixed to the upper end of the bottom plate, the push rod motor is fixed to the rear mounting bracket of the motor, the telescopic rod of the push rod motor is connected to the front mounting bracket of the motor, the front mounting bracket of the motor is fixed to the upper end of the moving plate, one end of the moving plate is connected to a plurality of support blocks, a pointer is fixed to one side of the moving plate, the scale is fixed to the bottom plate, and the arrow position of the pointer corresponds to the position of the scale;

[0013] The difference between the first positioning and squeezing unit and the second positioning and squeezing unit is that the first positioning and squeezing unit further includes a first top plate and a first laser rangefinder, the first top plate is connected to the support block by pins, and the first laser rangefinder is symmetrically arranged on both sides of the first top plate;

[0014] The second positioning and extrusion unit also includes a second top plate, a pressure sensor and a display screen. The second top plate is connected to the support block through pins. The pressure sensor is installed in a groove of the second top plate. The display screen is installed at the upper end of the support block. The input end of the display screen is electrically connected to the output end of the pressure sensor for displaying the pressure value.

[0015] As a preferred technical solution of the present invention, pads are symmetrically arranged on both sides of the rear mounting bracket of the motor, guide rails are arranged on the upper ends of the pads, sliders are slidably connected to the upper ends of the guide rails, and the upper ends of the sliders are fixedly connected to the movable plate.

[0016] As a preferred technical solution of the present invention, the guide extrusion unit includes a cylinder bracket, a cylinder, a solenoid valve, a floating joint, a push plate, a guide plate and a second laser rangefinder;

[0017] The cylinder bracket is fixed on the base plate, the cylinder is installed on the cylinder bracket, the air outlet end of the solenoid valve is connected to the cylinder through an air pipe joint, the telescopic end of the cylinder is connected to the push plate through a floating joint, one side of the push plate is connected to the guide plate through a plurality of adjusting screws, and the second laser rangefinder is symmetrically arranged on both sides of the guide plate.

[0018] As a preferred technical solution of the present invention, guide cylinders are symmetrically installed on both sides of the cylinder bracket, a guide rod passes through the guide cylinder, one end of the guide rod is connected to the sliding plate, and the other end of the guide rod is fixedly connected to the push plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the high-precision battery pack four-side extrusion device sets a first positioning extrusion unit and a second positioning extrusion unit, and controls the push rod motors in the first positioning extrusion unit and the second positioning extrusion unit to move at the same frequency under the action of a separate frequency converter, thereby ensuring that the force inside the battery pack is uniform and the poles do not move. By installing a laser rangefinder on the first positioning extrusion unit and the guide extrusion unit, the distance between the opposite sides of the battery pack is monitored online to avoid the misalignment of the opposite sides during the assembly of the battery pack. By setting guide extrusion units on the other two sides of the battery pack, the straightness and verticality of the battery pack can be ensured, and the cooling plate can be prevented from being installed at an angle, thereby greatly improving the installation efficiency and quality of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the bracket assembly;

[0022] Figure 3 is a structural schematic diagram of a first positioning and extrusion unit;

[0023] Figure 4 is a structural schematic diagram of a second positioning and extrusion unit;

[0024] Figure 5 It is a schematic diagram of the installation position structure of the pressure sensor in the second positioning extrusion unit;

[0025] Figure 6 Schematic diagram of the structure of the guided extrusion unit.

[0026] In the figure: 1 bracket assembly, 11 frame, 12 bottom plate, 13 Foma wheel, 2 first positioning extrusion unit, 201 motor rear mounting bracket, 202 motor front mounting bracket, 203 push rod motor, 204 moving plate, 205 slider, 206 guide rail, 207 cushion block, 208 pointer, 209 scale, 210 support block, 211 first top plate, 212 first laser rangefinder, 3 second positioning extrusion unit, 301 second top plate, 302 pressure sensor, 303 display screen, 4 guide extrusion unit, 401 cylinder bracket, 402 sliding plate, 403 cylinder, 404 guide rod, 405 guide cylinder, 406 solenoid valve, 407 air pipe joint, 408 floating joint, 409 push plate, 410 guide plate, 411 adjustment screw, 412 second laser rangefinder, 5 battery pack, 6 placement plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 , the present invention provides a technical solution: a high-precision battery pack four-side extrusion device, including a bracket assembly 1, a placement plate 6, a first positioning extrusion unit 2, a second extrusion positioning unit 3 and a guide extrusion unit 4;

[0029] The support assembly 1 includes a frame 11 and a bottom plate 12. The size of the frame 11 is 1700mmX800mmX15mm, and the bottom plate 12 is fixed thereon. The bottom plate 12 is provided with a placement plate 6, a first positioning extrusion unit 2, a second extrusion positioning unit 3 and a guide extrusion unit 4. The battery pack 5 is placed on the placement plate 6, and the material of the placement plate 6 is nylon.

[0030] The first positioning and squeezing unit 2 and the second positioning and squeezing unit 3 are respectively arranged on both sides of the length of the battery pack 5, and the first positioning and squeezing unit 2 and the second positioning and squeezing unit 3 each include a motor rear mounting bracket 201, a motor front mounting bracket 202, a push rod motor 203, a moving plate 204, a support block 210, a pointer 208 and a scale 209;

[0031] The rear mounting bracket 201 of the motor is fixed to the upper end of the bottom plate 12, the push rod motor 203 is fixed on the rear mounting bracket 201 of the motor, the telescopic rod of the push rod motor 203 is connected to the front mounting bracket 202 of the motor, the front mounting bracket 202 of the motor is fixed to the upper end of the movable plate 204, one end of the movable plate 204 is connected to a plurality of support blocks 210, a pointer 208 is fixed on one side of the movable plate 204, a scale 209 is fixed on the bottom plate 12, the arrow position of the pointer 208 corresponds to the position of the scale 209, the push rod motors 203 in the first positioning extrusion unit 2 and the second positioning extrusion unit 3 are controlled by separate frequency converters, so that the two sides are synchronously displaced, and the accuracy can be controlled within 0.2mm, by setting the pointer 208 and the scale 209, when setting the extrusion position and the initial position, the pointer 208 corresponds to the position of the scale 209, which is convenient for workers to detect with naked eyes, and realizes accurate positioning of the cooling plate and the bottom plate 12 and the mounting holes of the cover plate;

[0032] The difference between the first positioning and squeezing unit 2 and the second positioning and squeezing unit 3 is that the first positioning and squeezing unit 2 further includes a first top plate 211 and a first laser rangefinder 212. The first top plate 211 is connected to the support block 210 by pins. The first laser rangefinder 212 is symmetrically arranged on both sides of the first top plate 211. By arranging the first laser rangefinder 212, the distance between the first positioning and squeezing unit 2 and the second positioning and squeezing unit 3 can be detected, thereby ensuring the distance between opposite sides of the battery pack 5.

[0033] The second positioning and extrusion unit 3 further includes a second top plate 301, a pressure sensor 302 and a display screen 303. The second top plate 301 is connected to the support block 210 via a pin. The pressure sensor 302 is installed in a groove of the second top plate 301. The display screen 303 is installed at the upper end of the support block 210. The input end of the display screen 303 is electrically connected to the output end of the pressure sensor 302 to display the pressure value. The pressure sensor 302 is provided to detect the force inside the battery pack 5 to ensure the consistency of the force inside the battery pack 5.

[0034] There are two guide extrusion units 4, which are symmetrically arranged on both sides of the width of the battery pack 5. The guide extrusion unit 4 includes a cylinder bracket 401, a cylinder 403, a solenoid valve 406, a floating joint 408, a push plate 409, a guide plate 410 and a second laser rangefinder 412.

[0035] The cylinder bracket 401 is fixed on the bottom plate 12, the cylinder 403 is symmetrically mounted on the cylinder bracket 401, the gas outlet end of the solenoid valve 406 is connected to the cylinder 403 through the air pipe joint 407, the telescopic end of the cylinder 403 is connected to the push plate 409 through the floating joint 408, one side of the push plate 409 is connected to the guide plate 410 through a plurality of adjustment screws 411, and the second laser rangefinder 412 is symmetrically arranged on both sides of the guide plate 410;

[0036] The solenoid valve 406 is a three-position five-way solenoid valve, which is respectively connected to the air inlet positions of the two cylinders 403 of the same guide extrusion unit 4 to ensure that the cylinders 403 in the two guide extrusion units 4 are extended and retracted synchronously. By installing a floating joint 408 at the telescopic end of the cylinder 403, the force on the push plate 409 can be adjusted. By setting the adjusting screw 411, the position of the guide plate 410 can be fine-tuned according to the value of the second laser rangefinder 412 to ensure its verticality and straightness.

[0037] Furthermore, in order to facilitate the movement of the device, the lower end of the frame 11 is evenly distributed with Fuma wheels 13.

[0038] Furthermore, in order to ensure the stability and linearity of the movement process of the first top plate 211 and the second top plate 301, pads 207 are symmetrically arranged on both sides of the motor rear mounting bracket 201, and a guide rail 206 is arranged on the upper end of the pad 207. The upper end of the guide rail 206 is slidably connected to a slider 205, and the upper end of the slider 205 is fixedly connected to the moving plate 204.

[0039] Furthermore, in order to ensure the straightness of the guide plate 410 during its movement, guide cylinders 405 are symmetrically installed on both sides of the cylinder bracket 401. A guide rod 404 passes through the guide cylinder 405. One end of the guide rod 404 is connected to the sliding plate 402, and the other end of the guide rod 404 is fixedly connected to the push plate 409. During the movement, the guide rod 404 moves horizontally in the guide cylinder 405.

[0040] When in use: the device needs to be calibrated with a sample, and the operation process is as follows: the guide extrusion unit 4 positions the battery pack in the length direction, the first positioning extrusion unit 2 and the second extrusion positioning unit 3 simultaneously extrude the battery pack, and after moving to the extrusion position of the scale 209, the guide extrusion unit 4 is opened, and the four sides of the mechanism are tightened with screws. After completion, the first positioning extrusion unit 2 and the second extrusion positioning unit 3 return to the initial position of the scale 209.

[0041] The present invention realizes synchronous extrusion control of the opposite sides of the battery pack, monitors the relative positions of the extruded sides in real time, and detects the magnitude of the extrusion force inside the battery pack online, which can greatly improve the assembly efficiency, detect abnormal battery packs in time, and improve the product qualification rate.

[0042] In addition, the application range of this mechanism is wide. By removing the first top plate 211 and the second top plate 301, and processing and installing suitable top plates according to different battery packs, the battery pack can also be extruded on four sides; at the same time, this device can remove a guide extrusion unit 4 to achieve three-sided extrusion of the battery pack 5; similarly, this device can independently control the push rod motors 203 on both sides, and make real-time adjustments according to the extrusion position of the special-shaped module.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision battery pack four-side extrusion device, characterized in that: It comprises a support assembly (1), a placement plate (6), a first positioning extrusion unit (2), a second extrusion positioning unit (3) and a guide extrusion unit (4); The placement plate (6) is fixed to the upper end of the bracket assembly (1) and is used to place the battery pack (5); The first positioning and squeezing unit (2) and the second positioning and squeezing unit (3) are respectively arranged on both sides of the length of the battery pack (5) and are used to position the cooling plate in the width direction; The number of the guide extrusion units (4) is two, and the two guide extrusion units (4) are symmetrically arranged on both sides of the width of the battery pack (5) to control the installation straightness and verticality of the cooling plate.

2. A high-precision battery pack four-side extrusion device according to claim 1, characterized in that: The support assembly (1) comprises a frame (11) and a base plate (12), wherein the base plate (12) is fixed to the upper end of the frame (11).

3. A high-precision battery pack four-side extrusion device according to claim 2, characterized in that: The lower end of the frame (11) is evenly distributed with Fuma wheels (13).

4. A high-precision battery pack four-side extrusion device according to claim 2, characterized in that: The first positioning and squeezing unit (2) and the second positioning and squeezing unit (3) both comprise a motor rear mounting bracket (201), a motor front mounting bracket (202), a push rod motor (203), a moving plate (204), a support block (210), a pointer (208) and a scale (209); The motor rear mounting bracket (201) is fixed to the upper end of the base plate (12), the push rod motor (203) is fixed to the motor rear mounting bracket (201), the telescopic rod of the push rod motor (203) is connected to the motor front mounting bracket (202), the motor front mounting bracket (202) is fixed to the upper end of the moving plate (204), one end of the moving plate (204) is connected to a plurality of support blocks (210), a pointer (208) is fixed to one side of the moving plate (204), the scale (209) is fixed to the base plate (12), and the arrow position of the pointer (208) corresponds to the position of the scale (209); The difference between the first positioning and squeezing unit (2) and the second positioning and squeezing unit (3) is that the first positioning and squeezing unit (2) further comprises a first top plate (211) and a first laser rangefinder (212), the first top plate (211) and the support block (210) are connected via pins, and the first laser rangefinder (212) is symmetrically arranged on both sides of the first top plate (211); The second positioning and extrusion unit (3) also includes a second top plate (301), a pressure sensor (302) and a display screen (303); the second top plate (301) is connected to the support block (210) via a pin; the pressure sensor (302) is installed in a groove of the second top plate (301); the display screen (303) is installed at the upper end of the support block (210); the input end of the display screen (303) is electrically connected to the output end of the pressure sensor (302) for displaying pressure values.

5. A high-precision battery pack four-side extrusion device according to claim 4, characterized in that: Pads (207) are symmetrically arranged on both sides of the motor rear mounting bracket (201), a guide rail (206) is arranged at the upper end of the pad (207), a slider (205) is slidably connected to the upper end of the guide rail (206), and the upper end of the slider (205) is fixedly connected to the movable plate (204).

6. A high-precision battery pack four-side extrusion device according to claim 2, characterized in that: The guide extrusion unit (4) comprises a cylinder support (401), a cylinder (403), a solenoid valve (406), a floating joint (408), a push plate (409), a guide plate (410) and a second laser rangefinder (412); The cylinder support (401) is fixed on the base plate (12), the cylinder (403) is installed on the cylinder support (401), the air outlet end of the solenoid valve (406) is connected to the cylinder (403) via an air pipe joint (407), the telescopic end of the cylinder (403) is connected to a push plate (409) via a floating joint (408), one side of the push plate (409) is connected to a guide plate (410) via a plurality of adjustment screws (411), and the second laser rangefinder (412) is symmetrically arranged on both sides of the guide plate (410).

7. A high-precision battery pack four-side extrusion device according to claim 6, characterized in that: Guide cylinders (405) are symmetrically mounted on both sides of the cylinder bracket (401), a guide rod (404) passes through the guide cylinder (405), one end of the guide rod (404) is connected to the sliding plate (402), and the other end of the guide rod (404) is fixedly connected to the push plate (409).

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