Hot pressing formation fixture for square aluminum-cased batteries

Abstract

This utility model relates to the field of battery hot-pressing formation technology, and particularly to a hot-pressing formation fixture for square aluminum-cased batteries. It includes two independently arranged layer plate assemblies, each comprising multiple slidable layers. A clamping space is formed between adjacent layers, and an aluminum liner is held within this space, with the battery placed inside. Each layer plate assembly includes several parallel guide shafts, on which the layers slide back and forth. Two push plates are also mounted on the guide shafts, each corresponding to one end of a layer plate assembly. Each push plate is connected to a drive assembly, which drives the push plate to move along the guide shafts. Compared to existing technologies, this utility model's hot-pressing formation fixture for square aluminum-cased batteries reduces production defect rates, decreases production changeover time, and improves production efficiency.

Description

[Technical Field]

[0001] This utility model relates to the field of battery hot pressing formation technology, and in particular to a hot pressing formation fixture for square aluminum-cased batteries. [Background Technology]

[0002] The existing double-row square aluminum shell hot-pressing formation fixtures cause uneven stress due to the deformation of the layers, resulting in an excessive pressure difference between the first and last battery layers; and the fixtures cannot be effectively adapted due to the large differences in battery size. [Utility Model Content]

[0003] To overcome the above problems, this utility model proposes a hot-pressing formation fixture for square aluminum-cased batteries that can effectively solve the above problems.

[0004] The present invention provides a technical solution to solve the above-mentioned technical problems by providing a hot-pressing formation fixture for square aluminum-cased batteries, comprising two rows of independently arranged layer plate assemblies, each layer plate assembly including multiple slidable layer plates, with a clamping space formed between adjacent layer plates, an aluminum liner clamped in the clamping space, and a battery placed inside the aluminum liner; the layer plate assembly includes several parallelly arranged guide shafts, the layer plates passing through the guide shafts, and the layer plates being able to slide back and forth along the guide shafts; push plates are also passed through the guide shafts, a total of two push plates, each push plate being respectively disposed at one end of a layer plate assembly, and each push plate being respectively connected to a driving assembly, the driving assembly driving the push plate to move along the guide shaft.

[0005] Preferably, heating plates are provided on both sides of the clamping space, and the heating plates are connected to the side of the layer plate for heating the aluminum liner.

[0006] Preferably, the hot-pressing forming fixture for square aluminum-cased batteries further includes a base plate, a first side plate, a second side plate, and a vertical plate. The first side plate and the second side plate are respectively vertically connected to both ends of the base plate, and the vertical plate is located between the first side plate and the second side plate, and is vertically connected to the base plate.

[0007] Preferably, the two independently arranged shelf assemblies are disposed between the second side plate and the upright plate, and the push plate is located between the shelf assembly and the upright plate.

[0008] Preferably, the side of the shelf is provided with a clamping groove, the clamping groove is provided with a heating groove, and the heating plate is connected to the heating groove.

[0009] Preferably, two pressure sensors are provided on the inner side of the second side plate, each pressure sensor corresponding to a layer plate assembly, for detecting pressure values.

[0010] Preferably, the drive assembly includes a servo motor, the servo motor is connected to a reducer, the reducer is connected to a lead screw assembly via a coupling, the lead screw assembly is threadedly connected to a lead screw connecting plate, the servo motor drives the lead screw assembly to rotate, and the lead screw connecting plate moves along the lead screw assembly.

[0011] Preferably, the lead screw connecting plate is connected to the push plate via a linear bearing and a connecting rod, and the lead screw connecting plate drives the push plate to move. The linear bearing is mounted on the vertical plate, and the connecting rod passes through the linear bearing. The connecting rod is parallel to the guide shaft.

[0012] Preferably, the aluminum liner includes two aluminum plates and four equal-height screws, with the four equal-height screws connecting the two aluminum plates.

[0013] Preferably, the pressure sensor and the heating plate are connected to a PLC controller.

[0014] Compared with existing technologies, the hot-pressing formation fixture for square aluminum-cased batteries of this invention adopts a single-row independent pressure application method, which reduces the width of the two side plates, thereby reducing the deformation of the plates and improving the uniformity of pressure. This reduces the production defect rate. By changing the aluminum inner liner to match different sized cells, the fixture can be adapted to the production of more battery sizes, reducing production changeover time and improving production efficiency. The use of an aluminum inner liner reduces the time required for heating and increases heat conduction efficiency. [Attached Image Description]

[0015] Figure 1 This utility model relates to a hot-pressing forming fixture for square aluminum-cased batteries;

[0016] Figure 2 This utility model relates to a hot-pressing forming fixture for square aluminum-cased batteries;

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle.

Detailed Implementation Methods

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0019] It should be noted that in this embodiment of the invention, all directional indications (such as up, down, left, right, front, back, etc.) are limited to relative positions on the specified view, rather than absolute positions.

[0020] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] Please see Figures 1 to 3 The present invention provides a hot-pressing forming fixture for square aluminum-cased batteries, comprising two rows of independently arranged layer plate assemblies. Each layer plate assembly includes multiple slidable layer plates 3, and a clamping space 33 is formed between adjacent layer plates 33. An aluminum inner liner 2 is clamped in the clamping space 33, and a battery 1 is placed inside the aluminum inner liner 2. The battery 1 is a square aluminum-cased battery.

[0022] The shelf assembly includes several parallel guide shafts 8, and the shelf 3 passes through the guide shafts 8, and the shelf 3 can slide back and forth along the guide shafts 8.

[0023] The guide shaft 8 is also provided with push plates 10. There are two push plates 10 in total. Each push plate 10 is respectively set at one end of a layer plate assembly, and each push plate 10 is connected to a drive assembly. The drive assembly drives the push plate 10 to move along the guide shaft 8, which can press the two independently set layer plate assemblies layer by layer.

[0024] Heating plates 17 are respectively provided on both sides of the clamping space 33. The heating plates 17 are connected to the side of the layer plate 3 and are used to heat the aluminum liner 2.

[0025] The hot pressing and forming fixture for square aluminum-cased batteries of this utility model also includes a base plate 4, a first side plate 5, a second side plate 6 and a vertical plate 7. The first side plate 5 and the second side plate 6 are respectively vertically connected to the two ends of the base plate 4. The vertical plate 7 is located between the first side plate 5 and the second side plate 6 and is vertically connected to the base plate 4.

[0026] The two independently arranged shelf assemblies are located between the second side plate 6 and the upright plate 7, and the push plate 10 is located between the shelf assembly and the upright plate 7.

[0027] The side of the layer plate 3 is provided with a clamping groove 31, and a heating groove 32 is provided in the clamping groove 31. The heating plate 17 is connected to the heating groove 32.

[0028] Two pressure sensors 11 are provided on the inner side of the second side plate 6. Each pressure sensor 11 corresponds to a layer plate assembly and is used to detect pressure values.

[0029] The drive assembly includes a servo motor 16, which is connected to a reducer 15. The reducer 15 is connected to a lead screw assembly 14 via a coupling 13. The lead screw assembly 14 is threadedly connected to a lead screw connecting plate 9. The servo motor 16 drives the lead screw assembly 14 to rotate, and the lead screw connecting plate 9 moves along the lead screw assembly 14.

[0030] The lead screw connecting plate 9 is connected to the push plate 10 through the linear bearing 12 and the connecting rod. The lead screw connecting plate 9 drives the push plate 10 to move. The linear bearing 12 is set on the vertical plate 7. The connecting rod passes through the linear bearing 12 and is parallel to the guide shaft 8.

[0031] The aluminum liner 2 includes two aluminum plates and four equal-height screws. The four equal-height screws connect the two aluminum plates, and the equal-height screws can keep the battery inside while maintaining a certain gap between the two aluminum plates.

[0032] During operation, battery 1 is placed inside aluminum liner 2. The hot-pressing formation fixture is pulled open so that the gap between adjacent layers 3 is greater than the width of the liner. Two rows of 16 battery liners, totaling 32 channels, are simultaneously placed into the fixture. Two sets of servo motors 16 drive the ball screw assembly to advance forward at a uniform speed. After the layers 3 are pressed together to reach the preset pressure value, the servo motors 16 maintain the corresponding pressure. The heating plate 17 starts heating and reaches the corresponding preset temperature. During this time, battery 1 undergoes the required formation process at this pressure and temperature for the corresponding process time.

[0033] The pressure sensor 11 and the heating plate 17 are connected to a PLC controller. When the plate 3 applies pressure backward, the pressure sensor 11 generates a corresponding value and provides it to the PLC. At the same time, the heating plate 17 starts to heat up to the value set by the PLC.

[0034] Compared with existing technologies, the hot-pressing formation fixture for square aluminum-cased batteries of this invention adopts a single-row independent pressure application method, which reduces the width of the two side plates 3, thereby reducing the deformation of the plate 3 and improving the uniformity of pressure. This reduces the production defect rate. By changing the aluminum inner liner 2 to match different sized cells, the fixture can be more adaptable to the production of batteries of more sizes, reducing production changeover time and improving production efficiency. The use of the aluminum inner liner 2 reduces the time required for heating and increases the heat conduction efficiency.

[0035] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the concept of the present utility model should be included within the patent protection scope of the present utility model.

Claims

1. A hot-press formation jig for a square aluminum case battery, characterized by, It includes two independently arranged shelf assemblies, each shelf assembly including multiple slidable shelves, with a clamping space formed between adjacent shelves, and an aluminum liner clamped in the clamping space, with a battery placed inside the aluminum liner; The shelf assembly includes a plurality of parallel guide shafts, the shelf passes through the guide shafts, and the shelf can slide back and forth along the guide shafts; The guide shaft is also provided with push plates, a total of two push plates, each push plate is respectively set at one end of a layer plate assembly, and each push plate is connected to a drive assembly, the drive assembly drives the push plate to move along the guide shaft.

2. The hot-press formation jig for a square aluminum can battery according to claim 1, wherein Heating plates are provided on both sides of the clamping space. The heating plates are connected to the side of the layer plate and are used to heat the aluminum liner.

3. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 2, characterized in that, The hot-pressing formation fixture for square aluminum-cased batteries further includes a base plate, a first side plate, a second side plate, and a vertical plate. The first side plate and the second side plate are respectively vertically connected to the two ends of the base plate, and the vertical plate is located between the first side plate and the second side plate, and is vertically connected to the base plate.

4. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 3, characterized in that, The two independently arranged shelf assemblies are located between the second side plate and the upright plate, and the push plate is located between the shelf assembly and the upright plate.

5. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 2, characterized in that, The side of the shelf is provided with a clamping groove, and a heating groove is provided in the clamping groove. The heating plate is connected to the heating groove.

6. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 3, characterized in that, Two pressure sensors are provided on the inner side of the second side plate. Each pressure sensor corresponds to a layer plate assembly and is used to detect pressure values.

7. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 3, characterized in that, The drive assembly includes a servo motor, which is connected to a reducer. The reducer is connected to a lead screw assembly via a coupling. The lead screw assembly is threadedly connected to a lead screw connecting plate. The servo motor drives the lead screw assembly to rotate, and the lead screw connecting plate moves along the lead screw assembly.

8. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 7, characterized in that, The lead screw connecting plate is connected to the push plate via a linear bearing and a connecting rod. The lead screw connecting plate drives the push plate to move. The linear bearing is mounted on the vertical plate, and the connecting rod passes through the linear bearing. The connecting rod is parallel to the guide shaft.

9. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 1, characterized in that, The aluminum liner includes two aluminum plates and four equal-height screws, which connect the two aluminum plates.

10. The hot-pressing formation fixture for square aluminum-cased batteries as described in claim 6, characterized in that, The pressure sensor and heating plate are connected to a PLC controller.

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