CN217651286U

CN217651286U - Metal polar plate stress removing device

Info

Publication number: CN217651286U
Application number: CN202222026248.8U
Authority: CN
Inventors: 刘利平; 赵志阳; 刘峰
Original assignee: Datong Xinyan Hydrogen Energy Technology Co ltd
Current assignee: Datong Xinyan Hydrogen Energy Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-10-25
Anticipated expiration: 2032-08-02

Abstract

An embodiment of the utility model provides a metal polar plate stress remove device relates to battery polar plate destressing equipment field. Aims to solve the problem that the performance of the fuel cell is reduced because the stress of the polar plate cannot be released. The metal polar plate stress removing device comprises an end plate, a cover plate, a bottom plate and an ultrasonic driving mechanism, wherein the end plate is provided with a plurality of openings and is used for placing polar plates; the cover plate is detachably covered and fixed on the end plate so as to tightly press and fix the polar plate on the end plate; the bottom plate is provided with a plurality of bosses which are respectively and movably accommodated in the plurality of openings, and the plurality of bosses are used for contacting with the polar plates on the end plate; the ultrasonic driving mechanism is arranged at the bottom of the bottom plate and used for driving the bottom plate and a plurality of bosses to vibrate at high frequency so as to vibrate the pole plates on the end plate at high frequency. When the ultrasonic vibration generator works, the ultrasonic driving mechanism can drive the bosses on the bottom plate to continuously vibrate at high frequency so as to act on the metal polar plate, and the stress on the metal polar plate is released.

Description

Metal polar plate stress removing device

Technical Field

The utility model relates to a battery polar plate destressing equipment field particularly, relates to a metal polar plate stress remove device.

Background

In the process of stamping and forming of a metal polar plate of the fuel cell and welding of the bipolar plate, because the deformation of the material generates internal stress in the polar plate, the stress of the part can not be released, the polar plate can generate warping deformation, the flatness is poor, adverse effects can be caused on subsequent automatic production of the fuel cell, the consistency of the galvanic pile is poor, and the performance of the fuel cell is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a metal polar plate stress remove device, for example, it can improve polar plate stress and can't obtain the release, leads to the problem of fuel cell performance reduction.

The embodiment of the utility model discloses a can realize like this:

the embodiment of the utility model provides a metal polar plate stress removing device, which comprises an end plate, a cover plate, a bottom plate and an ultrasonic driving mechanism; the end plate is provided with a plurality of openings and is used for placing polar plates; the cover plate is detachably covered and fixed on the end plate so as to tightly press and fix the polar plate on the end plate; the bottom plate is provided with a plurality of bosses which are respectively and movably accommodated in the plurality of openings and are used for contacting the polar plate on the end plate; the ultrasonic driving mechanism is arranged at the bottom of the bottom plate and used for driving the bottom plate and the bosses to vibrate at high frequency so as to vibrate the polar plate on the end plate at high frequency.

In addition, the embodiment of the present invention provides a metal plate stress removing device, which can also have the following additional technical features:

optionally, the ultrasonic drive mechanism comprises a mounting bracket and an ultrasonic impact head; the mounting bracket is fixed at the bottom of the bottom plate, the ultrasonic impact head is arranged on the mounting bracket and is positioned at the bottom of the bottom plate, and the ultrasonic impact head is used for driving the bottom plate to vibrate at high frequency.

Optionally, the ultrasonic driving mechanism further includes an ultrasonic driving power supply, an ultrasonic transducer and an amplitude transformer, which are electrically connected in sequence, and the ultrasonic impact head is connected to the amplitude transformer.

Optionally, the bottom plate is provided with a plurality of grooves; the bottom of the boss is movably arranged in the groove, and the top of the boss penetrates through the opening to be in contact with the polar plate on the end plate.

Optionally, the bottom of the boss and the cross section of the groove in the vertical plane are both in a shape like a Chinese character 'tu'.

Optionally, the metal electrode plate stress removing device further includes a plurality of disc spring sets; the plurality of disc spring groups are arranged between the bottom plate and the end plate at intervals.

Optionally, the metal pole plate stress removing device further comprises a locking block and a fastener, the locking block is fixed to the bottom plate through the fastener, and the locking block is used for pressing and fixing the end plate to the bottom plate under the condition that the locking block is fixed to the bottom plate.

Optionally, the locking block comprises a first plate and a second plate arranged at an included angle; the first plate is used for pressing and fixing the end plate on the bottom plate under the condition that the second plate and the bottom plate are fixed through the fastener.

Optionally, the end plate is provided with a positioning pin, the cover plate is provided with a positioning hole, the positioning pin is adapted to the positioning hole, and the positioning pin is used for penetrating through the structural hole of the polar plate, so that the cover plate and the polar plate are fixed relative to the end plate.

Optionally, the cover plate is provided with a plurality of first magnetic blocks, the end plate is provided with a plurality of second magnetic blocks, and the plurality of first magnetic blocks and the plurality of second magnetic blocks correspond to each other one by one under the condition that the positioning pins are matched with the positioning holes.

The utility model discloses metal polar plate stress remove device's beneficial effect includes, for example:

the metal polar plate stress removing device comprises an end plate, a cover plate, a bottom plate and an ultrasonic driving mechanism; the end plate is provided with a plurality of openings and is used for placing the polar plate; the cover plate is detachably covered and fixed on the end plate so as to tightly press and fix the polar plate on the end plate; the bottom plate is provided with a plurality of bosses which are respectively and movably accommodated in the plurality of openings, and the plurality of bosses are used for contacting with the polar plates on the end plate; the ultrasonic driving mechanism is arranged at the bottom of the bottom plate and used for driving the bottom plate and a plurality of bosses to vibrate at high frequency so as to vibrate the pole plates on the end plate at high frequency.

When the metal polar plate is in work, the ultrasonic waves can drive the bottom plate to move, the bosses on the bottom plate continuously vibrate at high frequency to act on the metal polar plate, the high-frequency vibration energy of the bosses is transmitted to the polar plate, and then the microstructure of particles in the polar plate is changed, so that the stress is removed. The problem that the performance of the fuel cell is reduced because the stress of the polar plate cannot be released is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a part of a structure of a metal plate stress removing device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a metal polar plate stress removing device according to an embodiment of the present invention;

fig. 3 is an exploded view of a metal plate stress removing device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a bottom plate of the metal polar plate stress removing device provided by the embodiment of the present invention with a boss.

Icon: 10-a metal plate stress removing device; 20-pole plate; 100-a cover plate; 110-a first magnetic block; 120-positioning holes; 200-end plate; 210-opening a hole; 220-a second magnetic block; 230-a locating pin; 300-a bottom plate; 310-a boss; 320-grooves; 330-disc spring group; 340-disc spring slot; 400-mounting a bracket; 410-ultrasonic impact head; 420-a horn; 500-a locking block; 510-bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The metal plate stress removing device 10 provided in the present embodiment is described in detail below with reference to fig. 1 to 4.

Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a metal plate stress removing apparatus 10, which includes an end plate 200, a cover plate 100, a bottom plate 300 and an ultrasonic driving mechanism; the end plate 200 is provided with a plurality of openings 210, and the end plate 200 is used for placing the polar plate 20; the cover plate 100 is detachably covered and fixed on the end plate 200 to tightly press and fix the pole plate 20 on the end plate 200; the base plate 300 is provided with a plurality of bosses 310, the plurality of bosses 310 are respectively movably accommodated in the plurality of openings 210, and the plurality of bosses 310 are used for contacting the pole plate 20 on the end plate 200; an ultrasonic driving mechanism is provided at the bottom of the base plate 300, and the ultrasonic driving mechanism is used for driving the base plate 300 and the plurality of bosses 310 to vibrate at high frequency so as to vibrate the pole plate 20 on the end plate 200 at high frequency.

The pole plate 20 is placed between the cap plate 100 and the end plate 200, and the cap plate 100 functions to fix the metal pole plate 20 and to clamp the pole plate 20 during the ultrasonic high-frequency vibration. The pole plate 20 is placed on the end plate 200, the cover plate 100 covers the pole plate 20, the pole plate 20 is fixed, and after the stress relief is completed, the cover plate 100 is taken away, and the pole plate 20 is taken away.

The base plate 300 is provided with a plurality of bosses 310, the end plate 200 is provided with a plurality of holes 210, the positions of the holes 210 correspond to the positions of the bosses 310 of the base plate 300, the bosses 310 are in clearance fit with the holes 210, the bosses 310 are in contact with the pole plate 20, high-frequency vibration energy of the bosses 310 is transmitted to the pole plate 20, and then the microstructure of particles in the pole plate 20 is changed, so that stress is removed. The number and the position of the plurality of micro-protrusions 310 on the base plate 300 are determined according to the stress distribution of the plate 20. The lower end of the base plate 300 is connected with an ultrasonic driving mechanism.

In operation, the ultrasonic wave drives the bottom plate 300 to move, and the plurality of bosses 310 on the bottom plate 300 continuously vibrate at high frequency to act on the metal plate 20. The high-frequency vibration generated by the ultrasonic wave acts on the metal polar plate 20 to change the metal grain structure on the surface of the polar plate 20, so that a plastic deformation layer is generated, the stress on the metal polar plate 20 is released, the strength and the hardness of the surface layer of the metal polar plate 20 are obviously improved, and the flatness of the polar plate 20 is better. The stress of the metal polar plate 20 is eliminated by utilizing ultrasonic waves, and the ultrasonic wave generator is simple to operate, convenient to use and good in energy saving performance.

Referring to fig. 2 and 3, in the present embodiment, the ultrasonic driving mechanism includes a mounting bracket 400 and an ultrasonic impact head 410; the mounting bracket 400 is fixed at the bottom of the bottom plate 300, the ultrasonic impact head 410 is arranged on the mounting bracket 400, the ultrasonic impact head 410 is positioned at the bottom of the bottom plate 300, and the ultrasonic impact head 410 is used for driving the bottom plate 300 to vibrate at high frequency. The ultrasonic impact head 410 is connected with the base plate 300, the ultrasonic impact head 410 vibrates with the base plate 300 at high frequency, and the driving boss 310 transmits the high-frequency vibration energy to the pole plate 20.

In this embodiment, the ultrasonic driving mechanism further includes an ultrasonic driving power source, an ultrasonic transducer and an amplitude transformer 420, which are electrically connected in sequence, and the ultrasonic impact head 410 is connected to the amplitude transformer 420.

The ultrasonic driving power supply converts commercial power into high-frequency high-voltage alternating current which is output to the ultrasonic transducer. The ultrasonic transducer then converts the input electrical energy into mechanical energy, i.e., ultrasonic waves. The ultrasonic transducer makes reciprocating stretching movement, the frequency of the stretching movement is equal to the alternating current frequency of a driving power supply, and the stretching displacement is about ten microns or more. The amplitude transformer 420 is used for amplifying the output amplitude of the ultrasonic transducer to more than 100 microns, and simultaneously applying impact force to the ultrasonic impact head 410 to push the ultrasonic impact head 410 to reciprocate at high speed. The ultrasonic impact head 410 drives the bottom plate 300 connected with the ultrasonic impact head to move, and energy is transmitted to the metal pole plate 20 through the boss 310 during the movement process, so that the effect of eliminating stress of the metal pole plate 20 is achieved. The ultrasonic impact head 410 rebounds under the reaction of the metal pole plate 20, is excited again after hitting the amplitude transformer 420 with high-frequency and high-frequency vibration, and hits the metal pole plate 20 again at high speed, and the impact operation is completed repeatedly to achieve the effect of removing stress.

Referring to fig. 3 and 4, in the present embodiment, the boss 310 is fixed to the surface of the base plate 300. In other embodiments, the base plate 300 is provided with a plurality of grooves 320; the bottom of the boss 310 is movably disposed in the groove 320, and the top of the boss 310 passes through the opening 210 to contact the plate 20 on the end plate 200. Specifically, the bottom of the boss 310 and the cross section of the groove 320 along the vertical plane are both in a shape of a "convex". Floating connection of the boss 310 to the base plate 300 is achieved.

That is, the boss 310 may be provided to be connected to the base plate 300 in a floating manner or in other forms, as long as the impact effect on the metal plate 20 can be achieved during the ultrasonic high-frequency vibration.

Referring to fig. 1 and 3, in the present embodiment, the metal plate stress removing device 10 further includes a plurality of disc spring sets 330; a plurality of disc spring groups 330 are spaced between the base plate 300 and the end plate 200. Specifically, the bottom plate 300 is provided with a plurality of disc spring slots 340 at intervals, one disc spring assembly 330 is installed in each disc spring slot 340, and the disc spring assemblies 330 are supported between the disc spring slots 340 and the end plate 200.

The disc spring group 330 is arranged between the bottom plate 300 and the end plate 200, and mainly used for reducing the influence on the end plate 200 during ultrasonic high-frequency vibration, avoiding the simultaneous high-frequency vibration of the end plate 200 driven during the ultrasonic high-frequency vibration, and reducing the abrasion of the end plate 200 during operation to a certain extent. In other embodiments, other elastic elements such as springs can be used to achieve the same effect.

Referring to fig. 2, in the present embodiment, the metal plate stress removing apparatus 10 further includes a locking block 500 and a fastener, the locking block 500 is fixed to the bottom plate 300 by the fastener, and the locking block 500 is used for pressing and fixing the end plate 200 to the bottom plate 300 while being fixed to the bottom plate 300.

Specifically, the number of the locking blocks 500 is two, and the two locking blocks 500 respectively fix the two ends of the end plate 200 and the bottom plate 300 together. Specifically, the two ends of the end plate 200 are respectively provided with a clamping groove, and the locking block 500 is clamped in the clamping grooves under the condition of being fixed with the bottom plate 300. The locking blocks 500 and fasteners are used to fix the relative positions of the end plate 200 and the base plate 300. Simple structure, and quick and convenient operation. Specifically, the fastener is a bolt 510.

In this embodiment, the locking block 500 includes a first plate and a second plate disposed at an included angle; the first plate is used to press-fix the end plate 200 to the base plate 300 with the second plate fixed to the base plate 300 by the fastener.

Specifically, the first board is clamped in the clamping groove, the second board is fixed to the bottom board 300 through a fastener, and then the first board presses and fixes the end board 200 to the bottom board 300. The first plate fits into the slot to prevent the end plate 200 from moving relative to the base plate 300.

Referring to fig. 2 and 3, in the present embodiment, the end plate 200 is provided with a positioning pin 230, the cover plate 100 is provided with a positioning hole 120, the positioning pin 230 is adapted to the positioning hole 120, and the positioning pin 230 is used to pass through the structural hole of the pole plate 20, so that the positions of the cover plate 100 and the pole plate 20 relative to the end plate 200 are fixed.

Specifically, the number of the positioning holes 120 is four, and the four positioning holes 120 are spaced along the edge of the cover plate 100. The number of the positioning pins 230 is four, and four positioning pins 230 are provided at intervals along the circumference of the end plate 200. The four positioning pins 230 correspond to the positions of the four positioning holes 120 one by one. After the polar plate 20 is placed on the end plate 200, the four positioning pins 230 respectively penetrate through the four structural holes of the polar plate 20, the polar plate 20 is positioned by the four positioning pins 230, then the cover plate 100 is covered, the four positioning holes 120 of the cover plate 100 are correspondingly spliced with the four positioning pins 230 one by one, the horizontal positions of the cover plate 100 and the polar plate 20 relative to the end plate 200 are fixed, and the polar plate cannot move in the horizontal direction, so that the limit in the horizontal plane is realized.

In other embodiments, a plurality of positioning holes 120 and positioning pins 230 may be provided to position the plate 20 from the outer edge of the plate 20.

In this embodiment, the cover plate 100 is provided with a plurality of first magnetic blocks 110, the end plate 200 is provided with a plurality of second magnetic blocks 220, and the plurality of first magnetic blocks 110 and the plurality of second magnetic blocks 220 correspond to each other one by one under the condition that the positioning pins 230 are matched with the positioning holes 120.

The corresponding positions of the cover plate 100 and the end plate 200 are provided with strong magnets, i.e., the first magnetic block 110 and the second magnetic block 220, to clamp the metal pole plate 20 placed therein by attraction of the magnets. The magnet is clamped tightly by the attraction force between the magnets, so that the use is convenient. In other embodiments, bolts 510 or the like may be used for fixation.

According to the metal plate stress removing device 10 provided by the embodiment, the working principle of the metal plate stress removing device 10 is as follows: when the ultrasonic vibration plate is used, the cover plate 100 is taken down, the metal pole plate 20 is placed, the metal pole plate 20 is positioned through the positioning pin 230, then the cover plate 100 is placed, the cover plate 100 and the end plate 200 are clamped tightly through the strong first magnetic block 110 and the strong second magnetic block 220, then the ultrasonic driving mechanism is opened, the high-frequency vibration of the bottom plate 300 is driven, the high-frequency vibration of the bosses 310 on the bottom plate 300 acts on the metal pole plate 20, the stress on the metal pole plate 20 is released, and the flatness of the pole plate 20 is better.

The metal plate stress removing device 10 provided by the embodiment has at least the following advantages:

the ultrasonic waves are utilized to generate high-frequency vibration to impact the metal polar plate 20 to remove stress, and the effect is good. The disc spring is arranged between the end plate 200 and the bottom plate 300, so that the shock absorption can protect the workpiece to a certain extent, and the energy can be transmitted to the part to be processed, namely the metal pole plate 20, as far as possible. The pole plate 20 is clamped by the attraction of the magnet, and the operation of taking the cover plate 100 is more convenient when in use.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A metal plate stress removing device is characterized by comprising:

the end plate (200), the end plate (200) is provided with a plurality of holes (210), and the end plate (200) is used for placing the polar plate (20);

the cover plate (100) is used for detachably covering and fixing the cover plate (100) on the end plate (200) so as to tightly press and fix the pole plate (20) on the end plate (200);

the base plate (300) is provided with a plurality of bosses (310), the bosses (310) are respectively movably accommodated in the holes (210), and the bosses (310) are used for contacting the polar plate (20) on the end plate (200);

and the ultrasonic driving mechanism is arranged at the bottom of the bottom plate (300) and is used for driving the bottom plate (300) and the bosses (310) to vibrate at high frequency so as to vibrate the pole plate (20) on the end plate (200) at high frequency.

2. The metal plate stress relief device of claim 1, wherein:

the ultrasonic driving mechanism comprises a mounting bracket (400) and an ultrasonic impact head (410); the mounting bracket (400) is fixed at the bottom of the bottom plate (300), the ultrasonic impact head (410) is arranged on the mounting bracket (400), the ultrasonic impact head (410) is positioned at the bottom of the bottom plate (300), and the ultrasonic impact head (410) is used for driving the bottom plate (300) to vibrate at high frequency.

3. The metal plate stress relief device of claim 2, wherein:

the ultrasonic driving mechanism further comprises an ultrasonic driving power supply, an ultrasonic transducer and an amplitude transformer (420), wherein the ultrasonic driving power supply, the ultrasonic transducer and the amplitude transformer (420) are sequentially and electrically connected, and the ultrasonic impact head (410) is connected with the amplitude transformer (420).

4. The metal plate stress relief device of any of claims 1 to 3, wherein:

the bottom plate (300) is provided with a plurality of grooves (320); the bottom of the boss (310) is movably arranged in the groove (320), and the top of the boss (310) penetrates through the opening (210) to be in contact with the pole plate (20) on the end plate (200).

5. The metal plate stress relief device of claim 4, wherein:

the bottom of the boss (310) and the cross section of the groove (320) along the vertical plane are both in a convex shape.

6. The metal plate stress relief device of any of claims 1 to 3, wherein:

the metal polar plate stress removing device also comprises a plurality of disc spring groups (330); the plurality of disc spring groups (330) are arranged between the bottom plate (300) and the end plate (200) at intervals.

7. The metal plate stress relief device of any of claims 1 to 3, wherein:

the metal pole plate stress removing device further comprises a locking block (500) and a fastener, the locking block (500) is fixed to the bottom plate (300) through the fastener, and the locking block (500) is used for pressing and fixing the end plate (200) on the bottom plate (300) under the condition that the locking block is fixed to the bottom plate (300).

8. The metal plate stress relief device of claim 7, wherein:

the locking block (500) comprises a first plate and a second plate which are arranged at an included angle; the first plate is used for pressing and fixing the end plate (200) on the bottom plate (300) under the condition that the second plate and the bottom plate (300) are fixed through the fastener.

9. The metal plate stress relief device of any of claims 1 to 3, wherein:

the end plate (200) is provided with a positioning pin (230), the cover plate (100) is provided with a positioning hole (120), the positioning pin (230) is matched with the positioning hole (120), and the positioning pin (230) is used for penetrating through a structural hole of the pole plate (20), so that the positions of the cover plate (100) and the pole plate (20) relative to the end plate (200) are fixed.

10. The metal plate stress relief device of claim 9, wherein:

the cover plate (100) is provided with a plurality of first magnetic blocks (110), the end plate (200) is provided with a plurality of second magnetic blocks (220), and the plurality of first magnetic blocks (110) and the plurality of second magnetic blocks (220) are in one-to-one correspondence under the condition that the positioning pins (230) are matched with the positioning holes (120).