Device for in-situ solidification of battery

Abstract

The utility model relates to the technical field of lithium ion battery manufacturing, and discloses a device for in-situ solidification of a battery, which comprises an upper clamping plate and a lower clamping plate, a soft package battery is arranged between the upper clamping plate and the lower clamping plate, the top of the upper clamping plate is provided with an integrally-formed square bulge, a cavity is arranged in the bulge, and the upper clamping plate is provided with a hollow cavity. An upper clamping plate and a lower clamping plate are fixed together through hexagon bolts, so that the upper clamping plate and the lower clamping plate clamp the soft package battery, then a lifting plate moves downwards by rotating a threaded rod, then a spring is extruded, the spring is compressed, the elastic force of the spring is increased, and then the force of the spring pressing on a connecting disc is increased; due to the fact that the connecting disc, the connecting frame and the lower pressing plate are fixedly connected, the force of the lower pressing plate on the soft package battery is increased, the soft package battery is solidified under specific pressure, the soft package battery is heated through the upper silicon rubber electric heating piece and the lower silicon rubber electric heating piece which are directly in contact with the soft package battery, and the soft package battery is evenly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery manufacturing, in particular to an in-situ solid-state battery device. Background Art

[0002] Thermally initiated polymerization is a commonly used in-situ curing method, which mainly heats the battery by heat conduction. However, during the curing process of thermally initiated polymerization, the outer electrode of the battery is first heated up, and then the heat is gradually transferred to the inner electrode of the battery, resulting in uneven distribution of the thermal field inside the battery. In addition, the oven used for heating itself also has the problem of uneven temperature. These combined factors make thermal initiation prone to uneven curing. At the same time, the initiated polymerization product is coated on the surface of the electrode, and the polymerization product usually has poor conductivity, which makes it impossible for the subsequent monomer to continue to gain or lose electrons, resulting in the termination of the polymerization reaction, resulting in loose fitting between the electrode layers. Under some harsh test conditions, such as overcharging, extrusion, puncture, collision and improper operation, the instantaneous release of heat can cause explosions. In addition, the existing curing device has problems such as long time consumption, high energy consumption and high cost. Utility Model Content

[0003] The purpose of the present invention is to provide an in-situ solid-state battery device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an in-situ solid-state battery device, comprising an upper splint and a lower splint, a soft-pack battery is placed between the upper and lower splints, an integrally formed square protrusion is provided on the top of the upper splint, and a cavity is opened in the protrusion, the cavity is communicated with the interior of the upper splint, a lower pressure plate is slidingly provided inside the upper splint, a connecting frame is fixedly installed on the top of the lower pressure plate, a connecting disk is fixedly installed at the center of the connecting frame, and the top inner wall of the cavity is rotatably connected to the upper splint through a bearing. A threaded rod is connected, and a lifting plate is provided in a threaded sleeve on the outer wall of the threaded rod. The lifting plate is slidably arranged in a cavity. A spring is fixedly installed on the bottom of the lifting plate, and the bottom end of the spring is fixedly connected to the top of the connecting plate. The lower surface of the lower pressure plate and the upper surface of the lower clamping plate are affixed with a silicone rubber heating plate. The four corners of the upper and lower clamping plates are extended, and threaded holes are opened on the part. The upper and lower clamping plates are fixed by hexagonal bolts, and the hexagonal bolts pass through the threaded holes on the extended parts of the four corners of the upper and lower clamping plates.

[0005] Furthermore, a pressure sensor is fixedly mounted on the inner wall of the lower pressing plate, and the pressure sensor passes through the silicone rubber heating sheet on the lower surface of the lower pressing plate.

[0006] Furthermore, when the soft-pack battery is placed between the upper clamping plate and the lower clamping plate, the tabs on the soft-pack battery extend from the upper clamping plate and the lower clamping plate.

[0007] Furthermore, a turning handle is fixedly mounted on the top end of the threaded rod, a through hole is opened in the center of the connecting plate, and the inner diameter of the through hole is larger than the outer diameter of the threaded rod.

[0008] Furthermore, the upper surface of the lower clamping plate and the lower surface of the lower pressure plate are fixedly installed with a limiting fence, and the silicone rubber heating sheet is located on the inner side of the limiting fence.

[0009] Furthermore, a heat-insulating sleeve is provided on the portion of the pressure sensor passing through the silicone rubber electric heating sheet, and the heat-insulating sleeve is snap-fitted onto the pressure sensor.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. Fix the upper and lower clamping plates together with hexagonal bolts so that the upper and lower clamping plates clamp the soft-pack battery. Then, rotate the threaded rod to move the lifting plate downward, thereby squeezing the spring. The spring is compressed, increasing the elastic force on the spring, thereby increasing the force of the spring pressing on the connecting plate. Because the connecting plate, the connecting frame, and the lower pressure plate are fixedly connected, the force of the lower pressure plate pressing on the soft-pack battery increases, causing the soft-pack battery to solidify under a specific pressure. The soft-pack battery is heated by the upper and lower silicone rubber heating sheets that are in direct contact with the soft-pack battery, so that the soft-pack battery is evenly heated.

[0012] 2. Set a limit fence to limit the soft-pack battery so that the soft-pack battery can be placed between the upper and lower clamping plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic structural diagram of the upper and lower splints of the utility model;

[0015] Figure 3 This is a schematic structural diagram of a front cross-sectional view of the upper clamping plate and the lower pressing plate of the present invention;

[0016] Figure 4 This is a structural schematic diagram of the bottom bottom view of the lower pressure plate of the utility model.

[0017] In the figure: 1. Upper clamping plate; 2. Lower clamping plate; 3. Soft-pack battery; 4. Hexagonal bolt; 5. Limit fence; 6. Silicone rubber electric heater; 7. Lower pressure plate; 8. Pressure sensor; 9. Connecting frame; 10. Connecting plate; 11. Cavity; 12. Lifting plate; 13. Spring; 14. Threaded rod; 15. Turn handle; 16. Insulation sleeve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figures 1-4 The utility model provides a technical solution: an in-situ solid-state battery device, comprising an upper splint 1 and a lower splint 2, a soft-pack battery 3 is placed between the upper splint 1 and the lower splint 2, the top of the upper splint 1 is provided with an integrally formed square protrusion, and a cavity 11 is opened in the protrusion, the cavity 11 is communicated with the interior of the upper splint 1, a lower pressure plate 7 is slidingly provided inside the upper splint 1, a connecting frame 9 is fixedly installed on the top of the lower pressure plate 7, a connecting disk 10 is fixedly installed on the center of the connecting frame 9, a threaded rod 14 is rotatably connected to the top inner wall of the cavity 11 through a bearing, a lifting plate 12 is threadedly sleeved on the outer wall of the threaded rod 14, the lifting plate 12 is slidably arranged in the cavity 11, a spring 13 is fixedly installed on the bottom of the lifting plate 12, the bottom end of the spring 13 is fixedly connected to the top of the connecting disk 10, a silicone rubber electric heating sheet 6 is affixed to the lower surface of the lower pressure plate 7 and the upper surface of the lower splint 2, the upper splint 1 and the lower splint The four corners of the plate 2 are all extended, and a threaded hole is opened on the part, and the upper clamping plate 1 and the lower clamping plate 2 are fixed by hexagonal bolts 4, and the hexagonal bolts 4 pass through the threaded holes on the extended parts of the four corners of the upper clamping plate 1 and the lower clamping plate 2, and the upper clamping plate 1 and the lower clamping plate 2 are fixed together by the hexagonal bolts 4, so that the upper clamping plate 1 and the lower clamping plate 2 clamp the soft-pack battery 3, and then the lifting plate 12 is moved down by rotating the threaded rod 14, thereby squeezing the spring 13. The spring 13 is compressed, so that the elastic force on the spring 13 becomes larger, and the force of the spring 13 pressing on the connecting plate 10 becomes larger. Because the connecting plate 10, the connecting frame 9, and the lower pressing plate 7 are fixedly connected, the force of the lower pressing plate 7 pressing on the soft-pack battery 3 becomes larger, so that the soft-pack battery 3 is cured under a specific pressure, and the soft-pack battery 3 is heated by the upper and lower two silicone rubber electric heating plates 6 that are directly in contact with the soft-pack battery 3, so that the soft-pack battery 3 is evenly heated;

[0020] A pressure sensor 8 is fixedly mounted on the inner wall of the lower pressing plate 7. The pressure sensor 8 passes through the silicone rubber heating sheet 6 on the lower surface of the lower pressing plate 7. Passing the pressure sensor 8 through the silicone rubber heating sheet 6 allows the pressure sensor 8 to directly contact the soft-pack battery 3, thereby accurately detecting the pressure exerted on the soft-pack battery 3.

[0021] When the soft-pack battery 3 is placed between the upper clamping plate 1 and the lower clamping plate 2, the tabs on the soft-pack battery 3 extend from the upper clamping plate 1 and the lower clamping plate 2 to prevent the tabs of the soft-pack battery 3 from being crushed;

[0022] A turning handle 15 is fixedly mounted on the top of the threaded rod 14, making it easier to rotate the threaded rod 14. A through hole is opened in the center of the connecting plate 10, and the inner diameter of the through hole is larger than the outer diameter of the threaded rod 14, so that the bottom end of the threaded rod 14 can pass through the connecting plate 10;

[0023] The upper surface of the lower clamping plate 2 and the lower surface of the lower pressure plate 7 are fixedly installed with a limit fence 5, and the silicone rubber electric heating sheet 6 is located on the inner side of the limit fence 5. The limit fence 5 is provided to limit the soft-pack battery 3 so that the soft-pack battery 3 can be placed between the upper clamping plate 1 and the lower clamping plate 2;

[0024] The portion of the pressure sensor 8 passing through the silicone rubber electric heater 6 is covered with a heat-insulating sleeve 16 , which is snap-fitted onto the pressure sensor 8 to provide heat-insulating protection for the pressure sensor 8 .

[0025] Working principle: When in use, place the soft-pack battery 3 on the lower clamping plate 2, and place the main body of the soft-pack battery 3 on the inner side of the limiting fence 5 when placing it. The pole ear of the soft-pack battery 3 extends from the limiting fence 5, and then cover the soft-pack battery 3 with the upper clamping plate 1, and use the hexagonal bolt 4 to fix the upper clamping plate 1 and the lower clamping plate 2. Then rotate the threaded rod 14 to move the lifting plate 12 downward, thereby squeezing the spring 13. The spring 13 is compressed, so that the elastic force on the spring 13 becomes larger, and then the force of the spring 13 pressing on the connecting plate 10 becomes larger. Because the connecting plate 10, the connecting frame 9, and the lower pressure plate 7 are fixedly connected, the force of the lower pressure plate 7 pressing on the soft-pack battery 3 becomes larger. The pressure on the soft-pack battery 3 is monitored by the pressure sensor 8, so that the soft-pack battery 3 is cured under a specific pressure, and the silicone rubber heating plate 6 is turned on to heat the soft-pack battery 3 so that the soft-pack battery 3 is fixed at a specified temperature.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. An in-situ solid-state battery device, comprising an upper clamping plate (1) and a lower clamping plate (2), characterized in that: A soft pack battery (3) is placed between the upper clamping plate (1) and the lower clamping plate (2). The top of the upper clamping plate (1) is provided with an integrally formed square protrusion, and a cavity (11) is provided in the protrusion. The cavity (11) is communicated with the interior of the upper clamping plate (1). A lower pressing plate (7) is provided inside the upper clamping plate (1) for sliding. A connecting frame (9) is fixedly installed on the top of the lower pressing plate (7). A connecting plate (10) is fixedly installed at the center of the connecting frame (9). The inner wall of the top of the cavity (11) is rotatably connected to a threaded rod (14) through a bearing. The outer wall of the threaded rod (14) is threadedly sleeved with a lifting plate (12). ), the lifting plate (12) is slidably arranged in the cavity (11), a spring (13) is fixedly installed at the bottom of the lifting plate (12), the bottom end of the spring (13) is fixedly connected to the top of the connecting plate (10), the lower surface of the lower pressure plate (7) and the upper surface of the lower clamping plate (2) are affixed with a silicone rubber heating plate (6), the four corners of the upper clamping plate (1) and the lower clamping plate (2) are both extended, and threaded holes are opened on the part, the upper clamping plate (1) and the lower clamping plate (2) are fixed by hexagonal bolts (4), and the hexagonal bolts (4) pass through the threaded holes on the extended parts of the four corners of the upper clamping plate (1) and the lower clamping plate (2).

2. The in-situ solid-state battery device according to claim 1, characterized in that: A pressure sensor (8) is fixedly mounted on the inner wall of the lower pressing plate (7), and the pressure sensor (8) passes through the silicone rubber electric heating sheet (6) on the lower surface of the lower pressing plate (7).

3. The in-situ solid-state battery device according to claim 1, characterized in that: When the soft-pack battery (3) is placed between the upper clamping plate (1) and the lower clamping plate (2), the tabs on the soft-pack battery (3) extend from the upper clamping plate (1) and the lower clamping plate (2).

4. The in-situ solid-state battery device according to claim 1, characterized in that: A turning handle (15) is fixedly mounted on the top end of the threaded rod (14), and a through hole is provided at the center of the connecting plate (10), wherein the inner diameter of the through hole is larger than the outer diameter of the threaded rod (14).

5. The in-situ solid-state battery device according to claim 1, characterized in that: The upper surface of the lower clamping plate (2) and the lower surface of the lower pressing plate (7) are both fixedly mounted with a limiting fence (5), and the silicone rubber electric heating sheet (6) is located on the inner side of the limiting fence (5).

6. The in-situ solid-state battery device according to claim 2, characterized in that: The portion of the pressure sensor (8) passing through the silicone rubber electric heating plate (6) is covered with a heat-insulating sleeve (16), and the heat-insulating sleeve (16) is snap-fitted onto the pressure sensor (8).

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