Battery restraining tray device

Abstract

The invention provides a battery restraining tray device, and belongs to the technical field of battery manufacturing. The battery restraining tray device comprises a tray frame and a restraining assembly, a plurality of limiting grooves which are arranged at equal intervals and used for the restraining assembly to be clamped in from top to bottom are formed in the two side walls of the tray frame, the restraining assembly comprises clamping plates, an inflation air bag and an extrusion plate, the inflation air bag is clamped between the two clamping plates and fixed, and the extrusion plate is arranged between the two clamping plates. The clamping plate is provided with a square window for transverse expansion of the inflatable air bag, the squeezing plate is transversely arranged in the square window in a sliding mode and can be pushed by the inflatable air bag to squeeze the battery, the lower end of the clamping plate is provided with a receding groove for an inflation opening of the inflatable air bag to penetrate out, and the tray frame is further provided with an air inlet and outlet assembly for inflating and deflating the inflatable air bag. The restraining assemblies are clamped into the limiting grooves, the distance between the restraining assemblies is fixed, the restraining assemblies apply pressure through inflation expansion of the restraining assemblies, all the channels do not interfere with one another, and it is guaranteed that the restraining force of all the channels is consistent.

Description

Technical Field

[0001] The invention belongs to the technical field of battery manufacturing and relates to a battery restraining tray device. Background Art

[0002] Capacity division is an important part of the lithium battery production process, which mainly includes two main steps: formation and capacity division. Formation is to charge with a small current to form a dense and stable SEI film on the surface of the negative electrode, while capacity division is to charge and discharge the battery according to the design standards to measure the battery capacity and classify and organize it. These two steps are essential to ensure the consistency, safety and high quality of the battery with a long cycle life. During the capacity division process, lithium batteries need to be moved between different equipment and workstations through restraint trays, and then moved in batches and capacity divided in batches.

[0003] For example, a battery tray [Patent No. 202322775146.0] published in a Chinese patent, in which a pressurizing mechanism is arranged, a first side plate is provided with a third limit groove at a position between two adjacent first limit grooves, and a fourth limit groove is provided at a position of the second side plate opposite to each of the third limit grooves, the third limit groove is used for inserting one side of the pressurizing mechanism, and the fourth limit groove is used for inserting the other side of the pressurizing mechanism, and a first pressing plate and a second pressing plate that can approach or move away from each other along the length direction of the first side plate are provided in the middle of the pressurizing mechanism, and the pressurizing mechanism includes an intermediate plate arranged between the first pressing plate and the second pressing plate, one side of the intermediate plate is inserted in the third limit groove, and the second side of the intermediate plate is inserted in the fourth limit groove; a receiving cavity is provided in the middle of the intermediate plate and passes through the length direction of the first side plate, and a bladder is provided in the accommodating cavity, and the bladder is inflated to push the first pressing plate and the second pressing plate away from each other.

[0004] The pressurizing mechanism of the battery tray can release the gas in the bag to make the first and second pressure plates remove the pressure on the battery, so that the operator can easily remove the battery. However, the bags are not connected to each other, resulting in different air pressures in the bags, and the binding force cannot be consistent, resulting in some batteries being clamped too loosely and some batteries being clamped too tightly. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a battery restraint tray device, in which the restraint components are inserted into the limit grooves, the spacing between the restraint components is fixed, the restraint components apply pressure through their own inflation, and the channels do not interfere with each other, thereby ensuring that the restraint forces of each channel are consistent.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a battery restraint tray device, comprising a tray frame and a restraint assembly, characterized in that a plurality of equally spaced limit grooves for the restraint assembly to be inserted into from top to bottom are provided on the two side walls of the tray frame, the restraint assembly comprises a clamping plate, an inflatable airbag, and an extrusion plate, the inflatable airbag is clamped and fixed in the middle by two clamping plates, a square window for the inflatable airbag to expand laterally is provided on the clamping plate, the extrusion plate is laterally slidably arranged in the square window and can be pushed by the inflatable airbag to squeeze the battery, a makeshift groove for the inflation port of the inflatable airbag to pass through is provided at the lower end of the clamping plate, and an air inlet and outlet assembly for inflating and exhausting the inflatable airbag is also provided on the tray frame.

[0007] Furthermore, the air inlet and outlet assembly includes an air inlet and outlet main pipe, a regulating valve, a pressure relief valve and a check valve fixed on the end surface of the tray frame, the regulating valve, the pressure relief valve and the check valve are connected to the outer end of the air inlet and outlet main pipe in sequence, the inner end of the air inlet and outlet main pipe extends into the tray frame and is connected to a plurality of air inlet and outlet branch pipes, and the air inlet and outlet branch pipes are connected to the inflation port of the inflatable airbag.

[0008] The space between the two restraint components is a channel for placing the battery. The outer end of the inlet and outlet air main pipe is connected to the air pump. The battery is first inserted into each channel. Since the inflatable airbag is not inflated at this time, the extrusion plate is squeezed by the battery to move closer to the inflatable airbag. Since there is no pressure, the battery can be easily inserted and pulled out of the channel. Turn on the air pump, and the air will continuously pass through the inlet and outlet air main pipes and be filled into each inflatable airbag through the inlet and outlet air branch pipes. The inflatable airbag expands toward the square windows on both sides, pushing the extrusion plate to move outward along the square windows to squeeze the battery. The regulating valve is used to control the air pressure entering the inlet and outlet air main pipe. When the air pressure reaches a predetermined value, the air pump is turned off, that is, the pressure applied by the extrusion plate to the battery reaches a predetermined restraining force. At this time, the battery is tightly clamped and cannot be easily pulled out, and the battery can also be prevented from expanding and deforming. When the air pressure in the inflatable airbag exceeds the standard, the check valve and the pressure relief valve are opened to discharge the air from the pressure relief valve. After the air pressure returns to normal, the check valve and the pressure relief valve are closed again. When the battery needs to be pulled out, open the check valve and the pressure relief valve, the high-pressure air in the inflatable airbag is discharged, the volume of the inflatable airbag shrinks, the squeezing plate loses the squeezing of the inflatable airbag, the battery is released from its restraint, and can be easily taken out of the channel.

[0009] Furthermore, a support block for supporting the battery is fixed to the outer bottom of the clamping plate, and the two clamping plates are attached to each other and fixed by bolts. A plurality of bolt holes are arranged around the square window, so that the two clamping plates firmly clamp the periphery of the inflatable airbag.

[0010] Furthermore, the support block is provided with a right angle groove, which is aligned with the lower corner of the extrusion plate. The right angle groove fits the corner of the battery, so that the extrusion plate can contact the side of the battery in all directions, so that the entire side of the battery is subjected to uniform restraint force.

[0011] Furthermore, the edges of the extrusion plate are provided with retaining edges, which can abut against the edges of the square window, and can prevent the extrusion plate from continuing to move inwards and extruding the inflatable airbag, thereby causing wear and damage to the inflatable airbag.

[0012] Furthermore, a plurality of iron blocks are embedded on the inner side of the retaining edge, and the clamping plate is provided with magnet blocks corresponding to the positions and quantities of the iron blocks, and the magnet blocks are located at the edge of the square window. In order to reset the extrusion plate after the inflatable airbag is deflated, magnet blocks and iron blocks that can be attracted to each other are provided, which can drive the extrusion plate to approach the clamping plate and fit together again.

[0013] Furthermore, the inflatable airbag is square, the outer edge of the inflatable airbag has a sealing portion extending outward, the inner side of the clamping plate is provided with a positioning groove for accommodating the sealing portion, and the sealing portion and the positioning groove are provided with corresponding positioning holes for the bolts to pass through. The inflatable airbag is firmly clamped by the two clamping plates, and the inflatable airbag will not be displaced in the longitudinal direction by inserting the bolts into the positioning holes.

[0014] Furthermore, the pallet frame is square, including a front end plate, a rear end plate, a bottom plate, an upper side beam and a lower side beam, the front end plate and the rear end plate are fixed to the bottom plate by bolts, the upper side beam and the lower side beam are respectively fixed between the front end plate and the rear end plate by bolts, the upper side beam and the lower side beam are both provided with aligned limit grooves, and two parallel strip rods for supporting the clamping plate are fixed on the bottom plate. The pallet frame has a simple structure, few components, and is detachably connected and freely combined, so it is convenient to replace components and assemble, and has strong practicality.

[0015] Compared with the prior art, the battery restraint tray device has the following advantages: 1. The structure is simple and composed of few parts, which is convenient for manual installation and disassembly; restraint and release can be achieved by simply inflating and exhausting the inflatable airbag, which is easy and fast to operate.

[0016] 2. The limit slot is fixed, so the spacing between the restraint components is also fixed. Even if a battery swells, only the restraint components on both sides of the swollen battery will be affected, while other restraint components will not be displaced and can still work normally, so that the restraint forces of each channel do not affect each other.

[0017] 3. The number of batteries and the number of channels do not need to correspond one to one, and can be constrained by a single channel.

[0018] 4. Since all the inflatable airbags are connected to the same air inlet and outlet main pipe, the air pressure inside the inflatable airbags is consistent, ensuring consistent restraint force in each channel.

[0019] 5. Due to the use of inflatable airbags to apply pressure to the battery, compared with the use of solid partitions to apply pressure, the weight of the restraint tray of the present invention is 10%-20% lighter than that of the conventional restraint tray.

[0020] 6. It can be used to restrain batteries of different thicknesses, which is very practical.

[0021] 7. It has an extrusion plate that moves horizontally along the square window. The extrusion plate fits tightly with the side of the battery in all directions, so that each point on the side of the battery is evenly stressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the battery restraint tray device.

[0023] Figure 2 It is a structural schematic diagram of the pallet frame.

[0024] Figure 3 It is a structural schematic diagram of the inlet and outlet gas components.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the restraint component.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the restraint assembly.

[0027] Figure 6 It is a schematic diagram of the structure of the inner side of the clamping plate.

[0028] Figure 7 It is a structural schematic diagram of an extruded plate.

[0029] Figure 8 It is a schematic diagram of the structure when two clamping plates are combined.

[0030] In the figure, 1. tray frame; 11. limit groove; 12. front end plate; 13. rear end plate; 14. bottom plate; 15. upper side beam; 16. lower side beam; 17. strip rod; 2. restraint assembly; 21. clamping plate; 211. square window; 212. make way groove; 213. positioning groove; 214. positioning hole; 215. magnet block; 22. inflatable airbag; 221. inflation port; 222. sealing part; 23. extrusion plate; 231. retaining edge; 232. iron block; 24. support block; 241. right angle groove; 3. inlet and outlet air assembly; 31. inlet and outlet air main pipe; 32. regulating valve; 33. pressure relief valve; 34. check valve; 35. inlet and outlet air branch pipe. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] like Figure 1As shown, the battery restraint tray device comprises a tray frame 1 and a restraint assembly 2. The two side walls of the tray frame 1 are provided with a plurality of equally spaced limit grooves 11 for the restraint assembly 2 to be inserted into from top to bottom.

[0033] like Figure 4-6 As shown, the restraint assembly 2 includes a clamping plate 21, an inflatable airbag 22, and an extrusion plate 23. The inflatable airbag 22 is clamped and fixed in the middle by two clamping plates 21. The clamping plate 21 is provided with a square window 211 for the inflatable airbag 22 to expand laterally. The extrusion plate 23 is laterally slidably arranged in the square window 211 and can be pushed by the inflatable airbag 22 to squeeze the battery. The lower end of the clamping plate 21 is provided with a makeshift groove 212 for the inflation port 221 of the inflatable airbag 22 to pass through. The tray frame 1 is also provided with an air inlet and outlet assembly 3 for inflating and exhausting the inflatable airbag 22.

[0034] like Figure 2 As shown, the pallet frame 1 is square, including a front end plate 12, a rear end plate 13, a bottom plate 14, an upper side beam 15 and a lower side beam 16. The front end plate 12 and the rear end plate 13 are fixed to the bottom plate 14 by bolts, and the upper side beam 15 and the lower side beam 16 are respectively fixed between the front end plate 12 and the rear end plate 13 by bolts. The upper side beam 15 and the lower side beam 16 are both provided with aligned limit grooves 11, and two parallel strip rods 17 for supporting the clamping plate 21 are fixed to the bottom plate 14. The pallet frame 1 has a simple structure, few components, and is detachably connected and freely combined. It is convenient to replace components and assemble, and has strong practicality.

[0035] like Figure 3 As shown, the air inlet and outlet assembly 3 includes an air inlet and outlet main pipe 31, a regulating valve 32 fixed on the end surface of the pallet frame 1, a pressure relief valve 33 and a check valve 34, the regulating valve 32, the pressure relief valve 33 and the check valve 34 are connected to the outer end of the air inlet and outlet main pipe 31 in sequence, the inner end of the air inlet and outlet main pipe 31 extends into the pallet frame 1 and is connected to a plurality of air inlet and outlet branch pipes 35, and the air inlet and outlet branch pipes 35 are connected to the inflation port 221 of the inflatable airbag 22.

[0036] The inflatable airbag 22 is square in shape, and has a sealing portion 222 extending outward at the outer edge of the inflatable airbag 22. A positioning groove 213 for accommodating the sealing portion 222 is formed on the inner side of the clamping plate 21. The sealing portion 222 and the positioning groove 213 are formed with corresponding positioning holes 214 for bolts to pass through. The inflatable airbag 22 is firmly clamped by the two clamping plates 21, and the inflatable airbag 22 will not be displaced in the longitudinal direction by inserting the bolts into the positioning holes 214.

[0037] like Figure 4As shown, a support block 24 for supporting the battery is fixed to the outer bottom of the clamping plate 21, and the two clamping plates 21 are attached to each other and fixed by bolts. A plurality of bolt holes are arranged around the square window 211, so that the clamping plate 21 firmly clamps the inflatable airbag 22.

[0038] The support block 24 is provided with a right angle groove 241, which is aligned with the lower corner of the extrusion plate 23. The right angle groove 241 fits the corner of the battery, so that the extrusion plate 23 can contact the side of the battery in all directions, so that the entire side of the battery is subjected to uniform restraint force.

[0039] like Figure 7 , Figure 8 As shown, the edges of the extrusion plate 23 are provided with retaining edges 231, and the retaining edges 231 can abut against the edges of the square window 211. The retaining edges 231 can prevent the extrusion plate 23 from continuing to move inward and extruding the inflatable airbag 22, causing wear and damage to the inflatable airbag 22. A plurality of iron blocks 232 are embedded on the inner side of the retaining edges 231, and the clamping plate 21 is provided with magnet blocks 215 corresponding to the positions and quantities of the iron blocks 232, and the magnet blocks 215 are located at the edges of the square window 211. In order to reset the extrusion plate 23 after the inflatable airbag 22 is deflated, magnet blocks 215 and iron blocks 232 that can be attracted to each other are provided, and the magnetic force can be used to drive the extrusion plate 23 to approach the clamping plate 21 and reattach them together.

[0040] Working principle: The space between the two restraint components 2 is a channel for placing batteries. The outer end of the inlet and outlet air main pipe 31 is connected to the air pump. First, insert the battery into each channel. Since the inflatable airbag 22 is not inflated at this time, the squeezing plate 23 is squeezed by the battery to move closer to the inflatable airbag 22. Since there is no pressure, the battery can be easily inserted and pulled out of the channel. Turn on the air pump, and the air will continuously pass through the inlet and outlet air main pipe 31 and then be filled into each inflatable airbag 22 through the inlet and outlet air branch pipe 35. The inflatable airbag 22 expands toward the square windows 211 on both sides, pushing the squeezing plate 23 to move outward along the square windows 211 to squeeze the battery. The regulating valve 32 is used to control the air pressure entering the inlet and outlet air main pipe 31. When the air pressure reaches a predetermined value, the air pump is turned off, that is, the pressure applied by the squeezing plate 23 to the battery reaches a predetermined restraining force. At this time, the battery is tightly clamped and cannot be easily pulled out, and the battery can also be prevented from expanding and deforming. When the air pressure in the inflatable airbag 22 exceeds the standard, the check valve 34 and the pressure relief valve 33 are opened to discharge the air from the pressure relief valve 33. After the air pressure returns to normal, the check valve 34 and the pressure relief valve 33 are closed again. When the battery needs to be pulled out, the check valve 34 and the pressure relief valve 33 are opened, the high-pressure air in the inflatable airbag 22 is discharged, the volume of the inflatable airbag 22 shrinks, the extrusion plate 23 loses the extrusion of the inflatable airbag 22, and the iron block 232 is adsorbed by the magnet block 215. The extrusion plate 23 returns to its original position and fits with the clamping plate 21. The battery is released from the restraint force and can be easily taken out from the channel. The multiple restraint components 2 of the present invention are uniformly inflated and discharged by an air inlet and outlet component 3, so that each inflatable airbag 22 maintains a consistent internal air pressure, and achieves a consistent restraint force for each battery in the tray frame 1. The pressure relief valve 33 and the check valve 34 can be opened to exhaust the air, and the battery can be taken out without pressure after exhausting.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A battery restraint tray device, comprising a tray frame (1) and a restraint assembly (2), characterized in that: A plurality of equidistantly arranged limiting grooves (11) are provided on the two side walls of the tray frame (1) for the restraint assembly (2) to be inserted from top to bottom. The restraint assembly (2) comprises a clamping plate (21), an inflatable airbag (22), and an extrusion plate (23). The inflatable airbag (22) is clamped and fixed in the middle by the two clamping plates (21). The clamping plate (21) is provided with a square window (211) for the inflatable airbag (22) to expand laterally. The extrusion plate (23) is slidably arranged in the square window (211) and can be pushed by the inflatable airbag (22) to squeeze the battery. A clearance groove (212) is provided at the lower end of the clamping plate (21) for the inflation port (221) of the inflatable airbag (22) to pass through. The tray frame (1) is also provided with an air inlet and outlet assembly (3) for inflating and exhausting the inflatable airbag (22).

2. A battery restraint tray device according to claim 1, characterized in that: The air inlet and outlet assembly (3) comprises an air inlet and outlet main pipe (31), a regulating valve (32) fixed on the end surface of the tray frame (1), a pressure relief valve (33) and a check valve (34); the regulating valve (32), the pressure relief valve (33) and the check valve (34) are connected to the outer end of the air inlet and outlet main pipe (31) in sequence; the inner end of the air inlet and outlet main pipe (31) extends into the tray frame (1) and is connected to a plurality of air inlet and outlet branch pipes (35); the air inlet and outlet branch pipes (35) are connected to the inflation port (221) of the inflatable airbag (22).

3. A battery restraint tray device according to claim 2, characterized in that: A support block (24) for supporting the battery is fixed to the outer bottom of the clamping plate (21), and the two clamping plates (21) are attached to each other and fixed by bolts.

4. A battery restraint tray device according to claim 3, characterized in that: The support block (24) is provided with a right-angle groove (241), and the right-angle groove (241) is aligned with the lower corner of the extrusion plate (23).

5. A battery restraint tray device according to claim 4, characterized in that: The edges of the extrusion plate (23) are surrounded by retaining edges (231), and the retaining edges (231) can abut against the edges of the square window (211).

6. A battery restraint tray device according to claim 5, characterized in that: A plurality of iron blocks (215) are embedded on the inner side surface of the retaining edge (231), and the clamping plate (21) is provided with magnet blocks (232) corresponding in position and number to the iron blocks (215), and the magnet blocks (232) are located at the edge of the square window (211).

7. A battery restraint tray device according to claim 6, characterized in that: The inflatable airbag (22) is square in shape, and the outer edge of the inflatable airbag (22) has a sealing portion (222) extending outward, and the inner side of the clamping plate (21) is provided with a positioning groove (213) for accommodating the sealing portion (222), and the sealing portion (222) and the positioning groove (213) are provided with corresponding positioning holes (214) for bolts to pass through.

8. A battery restraint tray device according to claim 7, characterized in that: The pallet frame (1) is square in shape and comprises a front end plate (12), a rear end plate (13), a bottom plate (14), an upper side beam (15) and a lower side beam (16); the front end plate (12) and the rear end plate (13) are fixed to the bottom plate (14) by bolts; the upper side beam (15) and the lower side beam (16) are respectively fixed between the front end plate (12) and the rear end plate (13) by bolts; the upper side beam (15) and the lower side beam (16) are both provided with aligned limit grooves (11); and two parallel strip rods (17) for supporting the clamping plate (21) are fixed to the bottom plate (14).

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