A battery cell pre-tightening device

Abstract

The embodiment of the utility model provides a battery cell pre-tightening device, which relates to the field of battery technology. The battery cell pre-tightening device includes a transfer device and a battery cell pre-tightening device, the transfer device is used to carry a battery cell group, and the transfer device is used to transfer the battery cell group from the battery cell stacking station to the battery cell extrusion station, and the battery cell pre-tightening device is used to extrude the battery cell group located at the battery cell extrusion station to pre-tighten the battery cell group. After the battery cell group is stacked at the battery cell stacking station, the battery cell group can be transferred to the battery cell extrusion station by the transfer device, and then the battery cell pre-tightening device is used to pre-tighten the battery cell group, thereby avoiding the problem of low efficiency caused by stacking and extruding batteries at the same station, and can meet production needs by one battery cell pre-tightening device, thereby improving production efficiency and reducing production costs.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cell pre-tightening device. Background Art

[0002] In the prior art, when a cell pre-tightening tool is used to pre-tighten a cell, the cell is generally stacked on the cell pre-tightening tool first, and then squeezed by a screw motor or a cylinder to achieve the pre-tightening effect.

[0003] However, since the battery cell pre-tightening tooling is basically fixed in one position, it is not flexible to use. The battery cells can only be stacked after the extrusion is completed, resulting in low production efficiency. If the efficiency is to be improved, multiple battery cell pre-tightening tooling needs to be used to meet the production rhythm, and the production cost is relatively high. Utility Model Content

[0004] The utility model provides a battery core pre-tightening device, which can improve the battery core pre-tightening efficiency and reduce the production cost.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The utility model provides a battery core pre-tightening device, comprising:

[0007] A transfer device, the transfer device is used to carry the battery cell group, and the transfer device is used to transfer the battery cell group from the battery cell stacking station to the battery cell extrusion station; and

[0008] A battery cell pre-tightening device is used to extrude the battery cell group located at the battery cell extrusion station to pre-tighten the battery cell group.

[0009] In an optional embodiment, the battery cell pre-tightening device includes a frame and an extrusion driving member, and the extrusion driving member is arranged on the frame;

[0010] Wherein, the extrusion driving member is used to extrude the battery cell group located at the battery cell extrusion station to pre-tighten the battery cell group.

[0011] In an optional embodiment, the extrusion drive member is a cylinder.

[0012] In an optional embodiment, the battery cell pre-tightening device further includes a pressure sensor, which is disposed on the extrusion driving member, and is used to obtain a pressure value applied by the extrusion driving member to the battery cell group.

[0013] In an optional embodiment, the battery cell pre-tightening device further includes a pressure display instrument, which is disposed on the frame, connected to the pressure sensor, and used to display the pressure value obtained by the pressure sensor.

[0014] In an optional embodiment, the battery cell pre-tightening device further includes a hanging ring, and the hanging ring is arranged on the frame.

[0015] In an optional embodiment, there are multiple hanging rings, and the multiple hanging rings are distributed at intervals.

[0016] In an optional embodiment, the battery cell pre-tightening device further includes a hanger, and the hanger is used to be connected to the lifting ring.

[0017] In an optional embodiment, the battery cell pre-tightening device further includes a battery cell stacking base plate, which is disposed on the transfer device, and the battery cell stacking base plate is used to support the battery cell group and to abut against one side of the battery cell group.

[0018] In an optional embodiment, the transfer device is a transfer cart.

[0019] The beneficial effects of the battery cell pre-tightening device of the embodiment of the utility model include, for example:

[0020] The utility model provides a battery cell pre-tightening device, which comprises a transfer device and a battery cell pre-tightening device, wherein the transfer device is used for carrying a battery cell group, and the transfer device is used for transferring the battery cell group from a battery cell stacking station to a battery cell extrusion station, and the battery cell pre-tightening device is used for extruding the battery cell group located at the battery cell extrusion station to pre-tighten the battery cell group. After the battery cell group is stacked at the battery cell stacking station, the battery cell group can be transferred to the battery cell extrusion station by the transfer device, and then the battery cell pre-tightening device is used to pre-tighten the battery cell group, thereby avoiding the problem of low efficiency caused by stacking and extruding the batteries at the same station, and can meet the production needs by one battery cell pre-tightening device, thereby improving the production efficiency and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a transfer device of a battery cell pre-tightening device provided in an embodiment of the utility model located at a battery cell stacking station;

[0023] Figure 2 A schematic diagram of a transfer device of a battery cell pre-tightening device provided in an embodiment of the utility model located at a battery cell extrusion station;

[0024] Figure 3 for Figure 2 A partial enlarged view of the battery cell pre-tightening equipment.

[0025] Icons: 100-transfer device; 200-battery cell pre-tightening device; 210-frame; 220-extrusion drive; 230-lifting ring; 300-pressure sensor; 400-pressure display instrument; 500-battery cell stacking base plate; 10-battery cell group. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0030] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0031] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0032] A battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. It has a positive electrode and a negative electrode. The performance parameters of a battery mainly include electromotive force, capacity, specific energy and resistance.

[0033] As mentioned in the background technology, in the prior art, during the process of pre-tightening the battery cells by the battery cell pre-tightening tool, the battery cells are generally first stacked on the battery cell pre-tightening tool, and then squeezed by a screw motor or a cylinder to achieve the pre-tightening effect.

[0034] However, since the battery cell pre-tightening tooling is basically fixed in one position, it is not flexible to use. The battery cells can only be stacked after the extrusion is completed, resulting in low production efficiency. If the efficiency is to be improved, multiple battery cell pre-tightening tooling needs to be used to meet the production rhythm, and the production cost is relatively high.

[0035] In view of this, please refer to Figure 1-Figure 3 The battery cell pre-tightening device provided in the embodiment of the utility model can solve this problem, which will be described in detail below.

[0036] Please refer to Figure 1 and Figure 2 In an embodiment of the utility model, a battery cell pre-tightening device is provided, which includes a transfer device 100 and a battery cell pre-tightening device 200. The transfer device 100 is used to carry a battery cell group 10, and the transfer device 100 is used to transfer the battery cell group 10 from the battery cell stacking station to the battery cell extrusion station. The battery cell pre-tightening device is used to extrude the battery cell group 10 located at the battery cell extrusion station to pre-tighten the battery cell group 10.

[0037] After the cell group 10 is stacked at the cell stacking station, the cell group 10 can be transferred to the cell extrusion station by the transfer device 100, and then the cell group 10 can be pre-tightened by the cell pre-tightening device 200, thereby avoiding the problem of low efficiency caused by cell stacking and extrusion at the same station. Production needs can be met by one cell pre-tightening device, thereby improving production efficiency and reducing production costs.

[0038] It should be noted that the battery cell group 10 can be understood as an assembly including multiple battery cells arranged in sequence. In order to facilitate the transportation of the battery cell group 10, in this embodiment, the transportation device 100 is a transportation cart, and the transportation cart can be pushed by an operator to move from the battery cell stacking station to the battery cell extrusion station.

[0039] Specifically, in this embodiment, the battery cell pre-tightening device 200 includes a frame 210 and an extrusion driving member 220, wherein the extrusion driving member 220 is arranged on the frame 210, wherein the extrusion driving member 220 is used to extrude the battery cell group 10 located at the battery cell extrusion station to pre-tighten the battery cell group 10 and realize pre-tightening of the battery cell.

[0040] In order to meet the larger battery cell pre-tightening force requirements, in this embodiment, the extrusion drive 220 is a cylinder, which can squeeze one side of the battery cell group 10 to achieve pre-tightening of the battery cell. Of course, in other embodiments, the extrusion drive 220 can also be a cylinder.

[0041] In order to monitor the preload force of the battery cell, please refer to Figure 3 The battery cell pre-tightening device further includes a pressure sensor 300 , which is disposed on the extrusion drive member 220 , and is used to obtain a pressure value applied by the extrusion drive member 220 to the battery cell group 10 .

[0042] In addition, the battery cell preload device also includes a pressure display instrument 400, which is arranged on the frame 210. The pressure display instrument 400 is connected to the pressure sensor 300. For example, the pressure display instrument 400 and the pressure sensor 300 can be electrically connected through a wiring harness. The pressure display instrument 400 is used to display the pressure value obtained by the pressure sensor 300.

[0043] Please refer again Figure 2 After the stacking of the battery cell group 10 is completed at the battery cell stacking station, the battery cell group 10 is transferred to the battery cell extrusion station by the transfer device 100. In order to facilitate the placement of the battery cell pre-tightening device 200 on the battery cell group 10, in the present embodiment, the battery cell pre-tightening device 200 also includes a lifting ring 230, and the lifting ring 230 is arranged on the frame 210. The battery cell pre-tightening device also includes a lifting device, which is used to connect with the lifting ring to facilitate lifting by the lifting device.

[0044] It should be noted that there are multiple rings 230, and the multiple rings 230 are distributed at intervals. Specifically, in this embodiment, the number of rings 230 is four. Of course, in other embodiments, the number of rings 230 can also be two, three or five, etc. Here, the number of rings 230 is not limited.

[0045] In order to facilitate the stacking and extrusion of battery cells, in the present embodiment, the battery cell pre-tightening device also includes a battery cell stacking base plate 500, which is arranged on the transfer device 100. Specifically, the battery cell stacking base plate 500 is fixed on the transfer device 100, and the battery cell stacking base plate 500 is used to carry the battery cell group 10, and the battery cell stacking base plate 500 is used to abut one side of the battery cell group 10, so that the extrusion driving member 220 of the battery cell pre-tightening device 200 can realize the extrusion of the other side of the battery cell group 10 to realize the pre-tightening of the battery cells.

[0046] According to a battery cell pre-tightening device provided in this embodiment, the working principle of the battery cell pre-tightening device is as follows:

[0047] Please refer again Figure 1 , the cell stacking bottom plate 500 is fixed on the transfer device 100 . At this time, the transfer device 100 is in the cell stacking station, and the operator can complete the stacking of the cells on the cell stacking bottom plate 500 .

[0048] Please continue to refer to Figure 2 After the battery cells are stacked, they are transferred to the battery cell extrusion station through the transfer device 100, the lifting ring is connected to the lifting device, and then the battery cell extrusion mechanism is placed on the battery cell stacking base plate 500, and then the right side of the battery cell group 10 is extruded through the extrusion driving member 220. At the same time, the battery cell stacking base plate 500 can abut the left side of the battery cell group 10 to complete the pre-tightening of the battery cells.

[0049] That is to say, the early operators can stack multiple battery cells at the previous workstation and then go to the next workstation for pre-tightening, thus avoiding the problem of low efficiency caused by stacking and squeezing battery cells at one workstation.

[0050] In summary, the battery cell pre-tightening equipment includes a transfer device 100 and a battery cell pre-tightening device 200. The transfer device 100 is used to carry the battery cell group 10, and the transfer device 100 is used to transfer the battery cell group 10 from the battery cell stacking station to the battery cell extrusion station. The battery cell pre-tightening device is used to extrude the battery cell group 10 located at the battery cell extrusion station to pre-tighten the battery cell group 10.

[0051] After the cell group 10 is stacked at the cell stacking station, the cell group 10 can be transferred to the cell extrusion station by the transfer device 100, and then the cell group 10 can be pre-tightened by the cell pre-tightening device 200, thereby avoiding the problem of low efficiency caused by cell stacking and extrusion at the same station. Production needs can be met by one cell pre-tightening device, thereby improving production efficiency and reducing production costs.

[0052] That is, the battery cell pre-tightening device has the advantages of low investment cost, large battery cell pre-tightening force and high production efficiency. At the same time, it is flexible to use and is not limited to a fixed position.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery cell pre-tightening device, characterized in that: include: A transfer device (100), the transfer device (100) being used to carry a battery cell group (10), and the transfer device (100) being used to transfer the battery cell group (10) from a battery cell stacking station to a battery cell extrusion station; and A battery cell pre-tightening device (200) is used to extrude the battery cell group (10) located at the battery cell extrusion station to pre-tighten the battery cell group (10).

2. The battery cell pre-tightening device according to claim 1, characterized in that: The battery cell pre-tightening device (200) comprises a frame (210) and an extrusion driving member (220), wherein the extrusion driving member (220) is arranged on the frame (210); Wherein, the extrusion drive member (220) is used to extrude the battery cell group (10) located at the battery cell extrusion station to pre-tighten the battery cell group (10).

3. The battery cell pre-tightening device according to claim 2, characterized in that: The extrusion driving component (220) is an oil cylinder.

4. The battery cell pre-tightening device according to claim 2, characterized in that: The battery cell pre-tightening device further comprises a pressure sensor (300), wherein the pressure sensor (300) is arranged on the extrusion drive member (220), and the pressure sensor (300) is used to obtain a pressure value applied by the extrusion drive member (220) to the battery cell group (10).

5. The battery cell pre-tightening device according to claim 4, characterized in that: The battery cell pre-tightening device further comprises a pressure display instrument (400), which is arranged on the frame (210), connected to the pressure sensor (300), and used to display the pressure value obtained by the pressure sensor (300).

6. The battery cell pre-tightening device according to claim 2, characterized in that: The battery cell pre-tightening device (200) further comprises a hanging ring (230), wherein the hanging ring (230) is arranged on the frame (210).

7. The battery cell pre-tightening device according to claim 6, characterized in that: The number of the hanging rings (230) is multiple, and the multiple hanging rings (230) are distributed at intervals.

8. The battery cell pre-tightening device according to claim 6, characterized in that: The battery cell pre-tightening device also includes a hanger, and the hanger is used to be connected to the lifting ring (230).

9. The battery cell pre-tightening device according to claim 1, characterized in that: The battery cell pre-tightening device further comprises a battery cell stacking base plate (500), wherein the battery cell stacking base plate (500) is arranged on the transfer device (100), and the battery cell stacking base plate (500) is used to carry the battery cell group (10) and to abut against one side of the battery cell group (10).

10. The battery cell pre-tightening device according to claim 1, characterized in that: The transfer device (100) is a transfer trolley.

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