Battery restraining tray

Abstract

The utility model discloses a battery restraining tray which comprises a battery tray and a plurality of restraining assemblies, and the battery tray is used for bearing a plurality of single battery cells; a single battery cell is clamped between every two adjacent restraining assemblies, each restraining assembly comprises a single air bag and an inner lining plate, the inner lining plate is arranged on the battery tray, the single air bag is arranged on one side of the inner lining plate, the periphery of the single air bag is connected to the inner lining plate in a sealed mode, and a closed cavity is defined by the single air bag and the inner lining plate; the inner lining plate is provided with a gas pipeline, the gas pipeline is communicated with the closed cavity, and a gas medium can be introduced into the gas pipeline, so that the single airbag expands to restrain the single battery cells. According to the technical scheme, modularization of the battery restraining tray can be achieved, manufacturing is easy, the formation process cost is reduced, and the installation stability of the air bags in the battery restraining tray is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery restraint tray. Background Technology

[0002] Lithium-ion batteries, as a rechargeable and clean energy source, are widely used in digital devices, electric vehicles, and other products. The lithium-ion battery manufacturing process includes a formation step, the main function of which is to activate the battery. During formation, lithium-ion batteries expand, therefore, restraint trays are used to constrain the batteries and control their thickness.

[0003] The existing battery restraint trays have the following problems: (1) Traditional formation processes mostly use layered pressure restraint trays to restrain battery cells, which require a restraint machine to complete the restraint and de-restraint process of battery cells, which is costly and complex; (2) Some existing battery restraint trays use airbag restraint, but the airbag is composed of two pieces of airbag. The airbag lacks a corresponding fixing structure in the battery tray, resulting in poor installation stability of the airbag and possible poor restraint effect. Utility Model Content

[0004] The main purpose of this utility model is to propose a battery restraint tray, which aims to achieve modularity of the battery restraint tray, facilitate manufacturing, reduce formation process costs, and improve the installation stability of the airbag in the battery restraint tray.

[0005] To achieve the above objectives, the battery restraint tray proposed in this utility model includes:

[0006] A battery tray, which holds multiple individual battery cells.

[0007] Multiple restraint assemblies are provided, with each pair of adjacent restraint assemblies used to clamp the individual battery cell. Each restraint assembly includes a single airbag and an inner liner plate. The inner liner plate is disposed on the battery tray. The single airbag is disposed on one side of the inner liner plate. The periphery of the single airbag is sealed to the inner liner plate. The single airbag and the inner liner plate form a sealed cavity.

[0008] The inner liner is provided with a gas pipe that connects to the sealed cavity. The gas pipe can be used to introduce a gas medium, which causes the single airbag to expand and restrain the single battery cell.

[0009] Furthermore, the restraint assembly also includes an airbag pressure strip, and a connecting frame strip is provided around the periphery of the single airbag. The airbag pressure strip presses onto the connecting frame strip to form the sealed cavity.

[0010] Furthermore, the airbag pressure strip is provided with a plurality of first connecting holes, the connecting frame strip is provided with a plurality of second connecting holes, and the inner liner is provided with a plurality of threaded holes corresponding to the positions of the plurality of first connecting holes and the plurality of second connecting holes, for bolts to pass through the first connecting holes and the second connecting holes and be threaded into the threaded holes.

[0011] Furthermore, the connecting frame strip is glued to the inner lining plate.

[0012] Furthermore, the inner lining plate has multiple parallel air holes, which are connected to the gas pipeline.

[0013] Furthermore, the restraint assembly also includes a first heating plate and a second heating plate. The first heating plate is disposed on the side of the single airbag away from the inner liner, and the second heating plate is attached to the side of the inner liner away from the single airbag. The first heating plate and the second heating plate can be attached to the corresponding single battery cell for temperature control.

[0014] Furthermore, the battery tray includes a tray base plate, a front baffle, and a rear baffle. The front baffle and the rear baffle are respectively fixedly connected to opposite sides of the tray base plate. The tray base plate has multiple through holes for the cylinder's ejector pin to pass through and eject the individual battery cells.

[0015] Furthermore, a wire outlet hole is provided on the front baffle for the wires of the first heating plate and the second heating plate to pass through.

[0016] Furthermore, the tray base plate is provided with multiple comb plates, and the comb plates are provided with multiple slots, and the slots between each two adjacent comb plates can be used to insert the inner lining plate.

[0017] Furthermore, the bottom sides of the inner liner are provided with limit holes, and the sides of the individual battery cell are provided with limit mounting blocks. The limit mounting blocks have hooks for insertion into the limit holes.

[0018] Furthermore, a manifold is connected between the rear baffle and the front baffle, and a plurality of air pipe connectors are provided on the manifold. Each air pipe connector is connected to the gas pipeline of the corresponding inner liner through an air pipe.

[0019] Furthermore, the inner lining plate is made of aluminum alloy, and a temperature probe is embedded in the inner lining plate for detecting the temperature of the inner lining plate.

[0020] Compared with the prior art, the battery restraint tray of this utility model has the following advantages: (1) Since the single airbag is directly fixed on the inner liner plate and the inner liner plate is directly fixed in the battery tray, the assembly structure of the single airbag is stable and easy to assemble, which can effectively improve the assembly efficiency. (2) The battery restraint tray of this utility model can eliminate the restraint machine and auxiliary logistics line at the production end, simplifying the process flow. (3) The battery restraint tray of this utility model can quickly adjust the restraint pressure of the single cell by controlling the inflation pressure through the precision pressure regulating valve, and can quickly unrestrain the cell by releasing the airbag. (4) The battery restraint tray of this utility model can realize modular design and is easy to manufacture, effectively reducing production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the battery restraint tray of this utility model;

[0022] Figure 2 This is a schematic diagram of the battery restraint tray of this utility model without the battery tray.

[0023] Figure 3 This is a schematic diagram of the restraint assembly and individual battery cell in the battery restraint tray of this utility model;

[0024] Figure 4 This is a schematic diagram of the restraint components and individual battery cells in the battery restraint tray of this utility model from another perspective;

[0025] Figure 5 This is an exploded view of the restraint assembly and individual battery cells in the battery restraint tray of this utility model;

[0026] Figure 6 This is an exploded view of the restraint components and individual battery cells in the battery restraint tray of this utility model from another perspective;

[0027] Figure 7 This is a cross-sectional view of the inner liner, single airbag, and airbag pressure strip in the battery restraint tray of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the battery tray in the battery restraint tray of this utility model;

[0029] Figure 9 This is a cross-sectional view of the inner liner plate in the battery restraint tray of this utility model.

[0030] Reference numerals: 100, Battery tray; 200, Individual battery cell; 300, Restraint assembly; 310, Single airbag; 320, Inner liner; 311, Sealed cavity; 321, Gas pipeline; 330, Airbag pressure strip; 312, Connecting frame strip; 331, First connecting hole; 313, Second connecting hole; 322, Screw hole; 323, Air hole; 340, First heating plate; 350, Second heating plate; 110, Tray bottom plate; 120, Front baffle; 130, Rear baffle; 111, Through hole; 121, Cable outlet hole; 360, Comb plate; 361, Slot; 370, Manifold; 371, Air pipe; 380, Temperature probe; 324, Limiting hole; 210, Limiting mounting block; 211, Hook. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1 to 9 This utility model proposes a battery restraint tray.

[0033] The battery restraint tray includes a battery tray 100 and multiple restraint components 300. The battery tray 100 is used to support multiple individual battery cells 200. Each pair of adjacent restraint components 300 is used to clamp an individual battery cell 200. Each restraint component 300 includes a single airbag 310 and an inner liner 320. The inner liner 320 is disposed on the battery tray 100. A single airbag 310 is disposed on one side of the inner liner 320. The periphery of the single airbag 310 is sealed to the inner liner 320. The single airbag 310 and the inner liner 320 enclose a sealed cavity 311. The inner liner 320 has a gas pipe 321 that connects to the sealed cavity 311. The gas pipe 321 can be circulated with a gas medium, which causes the single airbag 310 to expand and restrain the individual battery cell 200.

[0034] Specifically, the restraint assembly 300 restrains and releases the individual battery cell 200 by controlling the expansion and contraction of the single-piece airbag 310. The single-piece airbag 310 can be installed on only one side of the inner liner plate 320, or it can be installed on both sides of the inner liner plate 320 to form a sealed cavity 311, depending on the actual situation, as long as the restraint effect on the individual battery cell 200 is guaranteed. During assembly, the single-piece airbag 310 is pressed onto the inner liner plate 320, ensuring a seal between the edge of the single-piece airbag 310 and the inner liner plate 320, ensuring the formation of a sealed cavity. When restraint of the individual battery cell 200 is required, the gas pipe 321 inside the inner liner plate 320 is inflated through an external inflation system. The gas flows into the sealed cavity 311 formed between the single-piece airbag 310 and the inner liner plate 320, causing the single-piece airbag 310 to expand and compress the individual battery cell 200, thus completing the restraint. When it is necessary to release the restraint, the gas in the gas pipe 321 and the sealed cavity 311 inside the inner liner 320 is released, the single airbag 310 contracts, the sealed cavity 311 becomes smaller, and the single airbag 310 loses its compression on the single cell 200, thus realizing the release of the single cell 200. With this setting, the battery restraint tray of this utility model has the following advantages: (1) Since the single airbag 310 is directly fixed on the inner liner 320 and the inner liner 320 is directly fixed in the battery tray 100, the assembly structure of the single airbag 310 is stable and the assembly is convenient, which can effectively improve the assembly efficiency. (2) The battery restraint tray of this utility model can eliminate the restraint machine and auxiliary logistics line at the production end, simplifying the process flow; (3) The battery restraint tray of this utility model can control the inflation pressure through a precision pressure regulating valve to achieve rapid adjustment of the restraint pressure of a single battery cell at 200, and can achieve rapid unrestraint of the battery cell by deflating the airbag; (4) The battery restraint tray of this utility model can achieve modular design and is easy to manufacture, effectively reducing production costs.

[0035] Please see Figures 3 to 7 Furthermore, the restraint assembly 300 also includes an airbag pressure strip 330. A connecting frame strip 312 is provided around the periphery of the single airbag 310. The airbag pressure strip 330 presses against the connecting frame strip 312 to form a sealed cavity 311. In this way, the airbag pressure strip 330 applies pressure to the connecting frame strip 312 of the single airbag 310, pressing the single airbag 310 tightly against the inner liner plate 320, so that a sealed cavity 311 can be formed between the single airbag 310 and the inner liner plate 320, thereby ensuring the airtightness of inflation or deflation and ensuring the stability of battery restraint and de-restraint.

[0036] Please see Figures 3 to 7Furthermore, the airbag pressure strip 330 has multiple first connecting holes 331, the connecting frame strip 312 has multiple second connecting holes 313, and the inner liner plate 320 has multiple threaded holes 322 corresponding to the positions of the multiple first connecting holes 331 and the multiple second connecting holes 313, for bolts to pass through the first connecting holes 331 and the second connecting holes 313 and be screwed into the threaded holes 322. Specifically, the airbag pressure strip 330 is pressed onto the connecting frame strip 312 of the single airbag 310 by bolts, which is simple to assemble, ensures the stability of the single airbag 310 assembly structure, and has high assembly efficiency.

[0037] Please see Figures 3 to 7 Furthermore, the connecting frame strip 312 is glued to the inner liner plate 320. Thus, during assembly, the connecting frame strip 312 of the single airbag 310 is first glued to the inner liner plate 320, then the airbag pressure strip 330 is pressed onto the connecting frame strip 312 of the single airbag 310, and bolts are screwed into the bolt holes 322 of the inner liner plate 320 through the first connecting hole 331 and the second connecting hole 313 to complete the assembly, ensuring the airtightness of the sealed cavity 311.

[0038] Please see Figures 3 to 7 Furthermore, the inner liner 320 has multiple parallel air holes 323, which connect to the gas conduit 321. Specifically, the gas conduit 321 can be cylindrical or curved. In this embodiment, the gas conduit 321 is cylindrical, with one side open and the other side closed. During inflation, gas flows through the gas conduit 321 and air holes 323 inside the inner liner 320 into the sealed cavity 311. The multiple air holes 323 ensure efficient inflation.

[0039] Please see Figures 3 to 7Furthermore, the restraint assembly 300 also includes a first heating plate 340 and a second heating plate 350. The first heating plate 340 is disposed on the side of the single airbag 310 opposite to the inner liner 320, and the second heating plate 350 is attached to the side of the inner liner 320 opposite to the single airbag 310. The first heating plate 340 and the second heating plate 350 can adhere to the corresponding single battery cell 200 for temperature control. Specifically, the single airbag 310 can be made of TPU, which has a certain degree of deformability and can withstand the heat of the first heating plate 340. The first heating plate 340 and the second heating plate 350 directly contact the corresponding single battery cell 200 to control the temperature of the single battery cell 200. It is understandable that in traditional technology, the formation and high-temperature settling of the single battery cell 200 need to be completed in a high-temperature environment (45±2℃), requiring a high-temperature chamber or oven to realize the process flow, and the high-temperature settling process before and after the formation process requires a logistics line to complete the flow of the restraint tray. The battery restraint tray of this utility model controls the temperature of the individual battery cell 200 through the first heating plate 340 and the second heating plate 350. This can eliminate the need for hardware facilities such as high-temperature rooms, ovens, and high-temperature settling chambers at the production end, thereby reducing costs and increasing efficiency, saving energy and reducing emissions, and improving the working environment for personnel. It also eliminates the impact of maintaining equipment and handling emergencies in a high-temperature environment on the physical and mental health of employees.

[0040] Please see Figure 8 Furthermore, the battery tray 100 includes a tray base plate 110, a front baffle 120, and a rear baffle 130. The front baffle 120 and the rear baffle 130 are respectively fixedly connected to opposite sides of the tray base plate 110. The tray base plate 110 has multiple through holes 111 for the cylinder's ejector pin to push out the individual battery cell 200. Thus, through the design of the through holes 111, when it is necessary to release the restraint, the external inflation system can be directly and precisely controlled to release the air from the gas pipe 321 inside the inner liner plate 320 and the sealed cavity 311. After the restraint is released, the cylinder's ejector pin drives the through holes 111 so that the ejector pin can push out the individual battery cell 200 for gripping by the mechanical claw in the subsequent formation equipment, greatly improving convenience.

[0041] Please see Figure 1 and Figure 8 Furthermore, a wiring hole 121 is provided on the front baffle 120 for the wires of the first heating plate 340 and the second heating plate 350 to pass through. In this way, the wires of the first heating plate 340 and the second heating plate 350 are passed through in a reasonable and orderly manner, preventing the wire harness from being messy and disorganized, ensuring a reasonable and aesthetically pleasing wire harness layout, and improving the quality of the modular battery restraint tray.

[0042] Please see Figure 1 , Figure 2 as well as Figure 8Furthermore, the tray base plate 110 is provided with multiple comb plates 360, and each comb plate 360 ​​is provided with multiple slots 361. The slots 361 between each pair of adjacent comb plates 360 allow the inner liner 320 to be inserted. In this way, by directly inserting the inner liner 320 into the slots 361 of the comb plates 360, it is convenient and quick. The comb plates 360 can improve the assembly efficiency of the inner liner 320, improve the stability of the assembly structure of the inner liner 320, and thus ensure the installation stability of the single airbag 310.

[0043] Please see Figures 3 to 7 Furthermore, the bottom sides of the inner liner 320 are provided with limiting holes 324, and the sides of the individual battery cell 200 are provided with limiting mounting blocks 210. The limiting mounting blocks 210 have hooks 211 for insertion into the limiting holes 324. Specifically, during the assembly process, after the inner liner 320 is inserted into the slots 361 of the comb plate 360, the assembly of the individual battery cell 200 can be completed by directly inserting the limiting mounting blocks 210 on both sides of the individual battery cell 200 into the limiting holes 324. This ensures the installation stability of the individual battery cell 200 and improves the assembly efficiency, ensures the accurate positioning of the individual battery cell 200, and ensures that the negative pressure nozzle can accurately position the individual battery cell 200 during subsequent formation.

[0044] Please see Figure 1 and Figure 8 Furthermore, a manifold 370 connects the rear baffle 130 and the front baffle 120. Multiple air pipe connectors are provided on the manifold 370, each connected to the corresponding gas pipe 321 of the inner liner 320 via an air pipe 371. Specifically, the air inlet of the manifold 370 is used to connect an air pump. The air pump connects to one manifold 370 to inflate or deflate all the gas pipes 321 and sealed cavities 311 of the inner liner 320, thereby controlling the expansion and contraction of the individual airbags 310 and completing the battery restraint and de-restraint actions. In this way, the battery restraint tray space is rationally utilized, the structure is rationally arranged, space utilization is improved, and inflation and deflation efficiency is guaranteed.

[0045] Please see Figures 3 to 4 Furthermore, the inner liner plate 320 is made of aluminum alloy, and a temperature probe 380 is embedded within it. The temperature probe 380 is used to detect the temperature of the inner liner plate 320. Specifically, both the heating element and the temperature probe 380 are connected to a PCBA board. In this way, the temperature probe 380 can detect the temperature of the inner liner plate 320, and thus the temperature of the heating element and the individual battery cell 200. The temperature probe 380 can then feed back the temperature information of the individual battery cell 200 to the PCBA board. The PCBA board uses this temperature information to control the temperature of the heating element, thereby achieving temperature control of the individual battery cell 200 and ensuring it remains within a safe temperature range.

[0046] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A battery restraint tray, characterized in that, The battery restraint tray includes: A battery tray for holding multiple individual battery cells; Multiple restraint assemblies are provided, with each pair of adjacent restraint assemblies used to clamp the individual battery cell. Each restraint assembly includes a single airbag and an inner liner plate. The inner liner plate is disposed on the battery tray. The single airbag is disposed on one side of the inner liner plate. The periphery of the single airbag is sealed to the inner liner plate. The single airbag and the inner liner plate form a sealed cavity. The inner liner is provided with a gas pipe that connects to the sealed cavity. The gas pipe can be used to introduce a gas medium, which causes the single airbag to expand and restrain the single battery cell.

2. The battery restraint tray as described in claim 1, characterized in that, The restraint assembly also includes an airbag pressure strip, and a connecting frame strip is provided around the periphery of the single airbag. The airbag pressure strip presses onto the connecting frame strip to form the sealed cavity.

3. The battery restraint tray as described in claim 2, characterized in that, The airbag pressure strip has multiple first connecting holes, the connecting frame strip has multiple second connecting holes, and the inner liner plate has multiple threaded holes corresponding to the positions of the multiple first connecting holes and the multiple second connecting holes, for bolts to pass through the first connecting holes and the second connecting holes and be threaded into the threaded holes.

4. The battery restraint tray as described in claim 3, characterized in that, The connecting frame strip is glued to the inner lining plate.

5. The battery restraint tray as described in claim 4, characterized in that, The inner lining plate has multiple air holes arranged in parallel, and the multiple air holes are connected to the gas pipeline.

6. The battery restraint tray as described in any one of claims 1 to 5, characterized in that, The restraint assembly also includes a first heating plate and a second heating plate. The first heating plate is disposed on the side of the single airbag away from the inner liner, and the second heating plate is attached to the side of the inner liner away from the single airbag. The first heating plate and the second heating plate can be attached to the corresponding single battery cell for temperature control.

7. The battery restraint tray as described in claim 6, characterized in that, The battery tray includes a tray base plate, a front baffle plate, and a rear baffle plate. The front baffle plate and the rear baffle plate are respectively fixedly connected to opposite sides of the tray base plate. The tray base plate has multiple through holes for the cylinder's ejector pin to pass through and eject the individual battery cells.

8. The battery restraint tray as described in claim 7, characterized in that, The front baffle is provided with a wire outlet hole for the wires of the first heating plate and the second heating plate to pass through.

9. The battery restraint tray as described in claim 8, characterized in that, The tray base plate is provided with multiple comb plates, and the comb plates are provided with multiple slots. The slot between each two adjacent comb plates can be used to insert the inner lining plate.

10. The battery restraint tray as described in claim 9, characterized in that, Limiting holes are provided on both sides of the bottom of the inner liner plate, and limiting mounting blocks are provided on both sides of the individual battery cell. The limiting mounting blocks have hooks for insertion into the limiting holes.

11. The battery restraint tray as described in claim 9, characterized in that, A manifold is connected between the rear baffle and the front baffle. The manifold is equipped with multiple air pipe connectors, and each air pipe connector is connected to the gas pipeline of the corresponding inner liner through an air pipe.

12. The battery restraint tray as claimed in claim 7, characterized in that, The inner lining plate is made of aluminum alloy, and a temperature probe is embedded in the inner lining plate to detect the temperature of the inner lining plate.

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