Battery cell fixing device

Abstract

The utility model discloses a battery cell fixing device which comprises a first limiting frame, a second limiting frame, a clamping and pushing mechanism and a mounting frame movably connected with the second limiting frame, a first clamping surface is arranged on the second limiting frame, and a second clamping surface is arranged on the mounting frame; the clamping pushing mechanism pushes the first limiting frame, and the first limiting frame is matched with the first clamping surface for clamping, or the first limiting frame is matched with the second clamping surface for clamping; therefore, different types of battery cells can be clamped or released, and the wide applicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical clamps, and in particular relates to a battery core fixing device. Background Art

[0002] When batch production of battery cells is completed, the battery cells need to be subjected to a variety of tests. Usually, most tests require welding connecting pieces on the positive and negative electrodes of the battery cells for connecting the battery cells for charging and discharging. Square or round battery cells usually have a variety of sizes, and different special tooling is required to clamp and fix the battery cells. This requires the production of a variety of special fixing tooling, which increases production costs.

[0003] In addition, the existing fixing tool lacks an adjustment device, and the fixing effect of the battery cell is poor. Therefore, when welding the connecting piece, the battery cell is easy to shake inside the fixing device, which affects the welding effect and easily leads to poor biased welding and safety hazards. Therefore, those skilled in the art provide a battery cell clamping device to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a battery core fixing device to solve the technical problem that square batteries or round batteries need to be equipped with different special tools to clamp and fix the batteries, which increases the production cost.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the first aspect of the utility model is:

[0006] A battery core fixing device comprises a first limiting frame, a second limiting frame, a clamping and pushing mechanism, and a mounting frame movably connected to the second limiting frame;

[0007] The second limiting frame is provided with a first clamping surface, and the mounting frame is provided with a second clamping surface; the clamping and pushing mechanism pushes the first limiting frame, and the first limiting frame cooperates with the first clamping surface for clamping, or the first limiting frame cooperates with the second clamping surface for clamping.

[0008] Preferably, the mounting frame is provided with a mounting groove, the mounting groove passes through the mounting frame; a limit groove is provided on the side wall of the mounting groove; the second limit frame is provided with a protrusion that cooperates with the limit groove, and when the second limit frame is inserted into the mounting slot in the forward direction, the first clamping surface is arranged opposite to the first limit frame; when the second limit frame is inserted into the mounting slot in the reverse direction, the first clamping surface is arranged opposite to the first limit frame.

[0009] Preferably, the first clamping surface is arranged on one side of the second limiting frame; an auxiliary clamping surface is arranged on the other side of the second limiting frame; when the second limiting frame is reversely inserted into the mounting groove, the auxiliary clamping surface is flush with the second clamping surface.

[0010] Preferably, a clamping plate is provided on the second limiting frame; the clamping plate is arranged in a "V"-shaped structure, and the first clamping surface is arranged on the inner side of the clamping plate.

[0011] Preferably, the first limiting frame is configured as a "J"-shaped clamping plate, the clamping plate is provided with a matching groove for the first limiting frame to pass through, and the first limiting frame is provided with a matching groove for passing through the clamping plate; the matching grooves on the clamping plate and the matching grooves on the first limiting frame are staggered.

[0012] Preferably, a pull ring is provided on the top of the second limiting frame.

[0013] Preferably, the clamping and pushing mechanism includes a screw rod and a sliding frame; the screw rod is threadedly connected to a fixed shaft seat; the screw rod is rotatably connected to the sliding frame; the sliding frame is pushed to move by rotating the screw rod, and the first limiting frame is arranged on the sliding frame.

[0014] Preferably, a first push plate is provided on the sliding frame; the first limiting frame is provided with a guide column and a movable pull rod; the guide column is slidably connected to the first push plate; the movable pull rod passes through the first push plate and is threadedly connected to the adjusting nut; the first push plate is limited between the adjusting nut and the first limiting frame; a compression spring is sleeved on the movable pull rod, one end of the compression spring is abutted against the first limiting frame, and the other end of the compression spring is abutted against the first push plate.

[0015] Preferably, the mounting frame is arranged on one side of the base, and the clamping and pushing mechanism is arranged on the other side of the base; an insulating plate is arranged in the middle of the base.

[0016] Preferably, the shaft seat is arranged on the base; a slide rail is arranged on the base, and the slide frame is slidably connected to the slide rail.

[0017] Preferably, rubber pads are provided on the inner side surfaces of the first clamping surface, the second clamping surface, the auxiliary clamping surface and the first limiting frame.

[0018] Preferably, the screw rod and the movable pull rod are located on the same axis; and a turntable is provided on the screw rod.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] According to the utility model, the second limiting frame is provided with a first clamping surface, and the mounting frame is provided with a second clamping surface; the clamping pushing mechanism pushes the first limiting frame, and the first limiting frame cooperates with the first clamping surface for clamping, or the first limiting frame cooperates with the second clamping surface for clamping, thereby being able to clamp square batteries or cylindrical batteries as needed, thereby improving the wide applicability of the device and reducing the cost of producing various special tooling.

[0021] The clamping and pushing mechanism of the utility model comprises a screw rod and a sliding frame; the screw rod is threadedly connected to a fixed shaft seat; the screw rod is rotatably connected to the sliding frame; the sliding frame is pushed to move by rotating the screw rod, and the first limiting frame is arranged on the sliding frame; the clamping and pushing mechanism pushes the first limiting frame to clamp the battery cell, so that battery cells of different sizes can be clamped or released, thereby improving the wide applicability of the device.

[0022] The utility model provides a first push plate on the sliding frame; the first limiting frame is provided with a guide column and a movable pull rod; the guide column is slidably connected to the first push plate; the movable pull rod passes through the first push plate and is threadedly connected to the adjusting nut; the first push plate is limited between the adjusting nut and the first limiting frame; a compression spring is sleeved on the movable pull rod, one end of the compression spring is abutted against the first limiting frame, and the other end of the compression spring is abutted against the first push plate; and the stiffness of the adjusting spring can be changed by adjusting the position of the adjusting nut on the movable pull rod, so as to ensure the effect of clamping the battery cell and avoid deformation of the battery cell caused by excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an axonometric diagram of the battery cell fixing device provided in this embodiment;

[0024] Figure 2 is a partial enlarged view of position A of the battery cell fixing device provided in this embodiment;

[0025] Figure 3 This is a partial enlarged view of the B portion of the battery cell fixing device provided in this embodiment;

[0026] Figure 4 is a structural diagram of a second limiting frame provided in this embodiment;

[0027] Figure 5 is a front view of the battery cell fixing device provided in this embodiment;

[0028] Figure 6 is a top view of the battery cell fixing device provided in this embodiment clamping a round battery cell;

[0029] Figure 7 It is a top view of the battery cell fixing device provided in this embodiment clamping a square battery cell.

[0030] In the figure, 1, base; 2, mounting frame; 201, mounting groove; 202, second clamping surface; 203, limiting groove; 3, second limiting frame; 301, protrusion; 302, pull ring; 303, matching groove; 304 auxiliary clamping surface; 31 clamping plate; 311 first clamping surface; 4, shaft seat; 5, screw; 501, turntable; 6, second push plate; 7, column; 8, first push plate; 801, guide hole; 802, slider; 9, movable pull rod; 901, adjusting nut; 10, compression spring; 11, guide column; 12, first limiting frame; 13, slide rail; 1301, limiting block; 14, insulating plate; 15, rubber pad. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0032] It should be noted that in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring that the present invention must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present invention refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0033] like Figures 1 to 5 As shown, a battery cell fixing device includes a first limit frame 12, a second limit frame 3, a clamping and pushing mechanism and a mounting frame 2; the mounting frame 2 is arranged on one side of the base 1, and the clamping and pushing mechanism is arranged on the other side of the base 1; an insulating plate 14 is arranged in the middle of the base 1; in this embodiment, the insulating plate 14 is arranged as a bakelite board; the second limit frame 3 is movably connected to the mounting frame 2; the clamping and pushing mechanism pushes the first limit frame 12 toward the mounting frame 2 for clamping the battery cell.

[0034] The mounting frame 2 is provided with a second clamping surface 202 and a mounting groove 201, and the second clamping surface 202 is arranged opposite to the first limiting frame; the mounting groove 201 runs through the mounting frame 2; limiting grooves 203 are symmetrically arranged on the two side walls of the mounting groove 201; the second limiting frame 3 is provided with a protrusion 301 that cooperates with the limiting groove 203, and the second limiting frame 3 is provided with a clamping plate 31, and the clamping plate 31 is set as a "V"-shaped structure, and the inner side of the clamping plate 31 is set as The first clamping surface 311; when the second limiting frame 3 is inserted into the installation groove 201 in the forward direction, the first clamping surface 311 is arranged opposite to the first limiting frame 12; when the second limiting frame 3 is inserted into the installation groove 201 in the reverse direction, the first clamping surface 311 is arranged opposite to the first limiting frame 12; the first clamping surface 311 is used to clamp cylindrical battery cells when cooperating with the first limiting frame 12; the second clamping surface 202 is used to clamp square battery cells when cooperating with the first limiting frame 12.

[0035] The clamping plate 31 is arranged on one side of the second limiting frame 3; an auxiliary clamping surface 304 is arranged on the other side of the second limiting frame 3; when the second limiting frame 3 is reversely inserted into the installation groove 201, the auxiliary clamping surface 304 is flush with the second clamping surface 202 to avoid the auxiliary clamping surface 304 and the second clamping surface 202 being uneven and affecting the clamping of the square battery cell; a pull ring 302 is arranged on the top of the second limiting frame 3 to facilitate the change of the direction in which the second limiting frame 3 is inserted into the installation groove 201.

[0036] The clamping and pushing mechanism includes a screw rod 5 and a sliding frame; a first push plate 8 and a second push plate 6 are arranged opposite to each other on the sliding frame; the first push plate 8 and the second push plate 6 are connected by a column 7; a slide rail 13 is arranged on the base 1, and a slider 802 is arranged at the bottom of the first push plate 8, and the sliding frame is slidably connected to the slide rail 13 of the base 1 through the slider 802; a limit block 1301 is arranged on the slide rail 13 to prevent the sliding frame from sliding out of the guide rail 13; the second push plate 6 of the sliding frame is rotatably connected to the screw rod 5; the screw 5 is threadedly connected to the fixed shaft seat 4; the shaft seat 4 is arranged on the base 1; a turntable 501 is arranged on the screw 5; the screw 5 is rotated by the turntable 501 to push the sliding frame to move.

[0037] The first limit frame 12 is provided with a guide column 11 and a movable pull rod 9; the first push plate 8 is slidably connected to the guide column 11 through a guide hole 801; the movable pull rod 9 passes through the first push plate 8 and is threadedly connected to the adjusting nut 901; the first push plate 8 is limited between the adjusting nut 901 and the first limit frame 12; the movable pull rod 9 is sleeved with a compression spring 10, one end of the compression spring 10 is against the first limit frame 12, and the other end of the compression spring 10 is against the first push plate 8; the screw 5 and the movable pull rod 9 are located on the same axis to ensure that the sliding frame and the first limit frame 12 have a good stress state. By adjusting the position of the adjusting nut 901 on the movable pull rod, the stiffness of the adjusting spring can be changed, which can improve the stability when clamping the cylindrical battery cell and prevent the battery cell from shaking inside the fixing device and affecting the welding effect; at the same time, it can avoid the deformation of the battery cell caused by excessive pressure.

[0038] The first limiting frame 12 is configured as a "J"-shaped clamping plate, the "J"-shaped opening of the first limiting frame 12 is opposite to the "V"-shaped clamping plate 31, the clamping plate 31 is provided with a matching groove 303 for the first limiting frame 12 to pass through, and the first limiting frame 12 is provided with a matching groove 303 for passing through the clamping plate 31; the matching groove 303 on the clamping plate 31 and the matching groove 303 on the first limiting frame 12 are staggered to avoid interference between the clamping plate 31 and the first limiting frame 12 during the clamping process; the first clamping surface 311, the second clamping surface 202, the auxiliary clamping surface 304 and the inner side surface of the first limiting frame 12 are provided with rubber pads 15, which not only protect the appearance of the battery cell, but also improve the insulation effect of the device.

[0039] Working principle: By adjusting the position of the adjusting nut 901 on the movable pull rod 9, the stiffness of the adjusting spring 10 can be changed according to the demand, thereby ensuring the effect of the device clamping the battery cell, while avoiding deformation of the battery cell caused by excessive pressure.

[0040] like Figure 6 When the round battery cell is tested, the second limit frame 3 is positively inserted into the installation groove 201, and the first clamping surface 311 is arranged opposite to the first limit frame 12; the cylindrical battery cell is placed on the bakelite board, and the screw 5 is driven to rotate by rotating the turntable 501, so as to push the sliding frame and the first limit frame 12 to move above the insulating plate 14, because the matching grooves on the clamping plate 31 and the matching grooves on the first limit frame 12 are staggered to avoid interference between the clamping plate 31 and the first limit frame 12 during the clamping process; under the cooperation of the first limit frame and the first clamping surface 311 of the clamping plate 31, the center of the cylindrical battery cell is automatically calibrated, and at the same time, cylindrical battery cells of different sizes can be clamped or released, thereby improving the wide applicability of the device.

[0041] like Figure 7 As shown, when the square battery cell is tested, when the second limit frame 3 is reversely inserted into the installation groove 201, the first clamping surface 311 is arranged opposite to the first limit frame 12, and the auxiliary clamping surface 304 is flush with the second clamping surface 202; the screw rod 5 is driven to rotate by rotating the turntable 501, so that the sliding frame and the first limit frame 12 can be pushed to move above the insulating plate 14, and the second clamping surface 202 cooperates with the first limit frame 12 to clamp the square battery cell; in this embodiment, by adjusting the orientation of the two ends of the second limit frame, the square battery cell or the cylindrical battery cell can be clamped at the same time, which improves the wide applicability of the device and reduces the cost of producing various special tooling.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A battery cell fixing device, characterized in that: It includes a first limiting frame, a second limiting frame, a clamping and pushing mechanism, and a mounting frame movably connected to the second limiting frame; The second limiting frame is provided with a first clamping surface, and the mounting frame is provided with a second clamping surface; the clamping and pushing mechanism pushes the first limiting frame, and the first limiting frame cooperates with the first clamping surface for clamping, or the first limiting frame cooperates with the second clamping surface for clamping.

2. The battery cell fixing device according to claim 1, characterized in that: The mounting frame is provided with a mounting groove, which passes through the mounting frame; a limiting groove is provided on the side wall of the mounting groove; the second limiting frame is provided with a protrusion that cooperates with the limiting groove, and when the second limiting frame is inserted into the mounting groove in the forward direction, the first clamping surface is arranged opposite to the first limiting frame; when the second limiting frame is inserted into the mounting groove in the reverse direction, the first clamping surface is arranged opposite to the first limiting frame.

3. The battery cell fixing device according to claim 2, characterized in that: The first clamping surface is arranged on one side of the second limiting frame; an auxiliary clamping surface is arranged on the other side of the second limiting frame; when the second limiting frame is reversely inserted into the mounting groove, the auxiliary clamping surface is flush with the second clamping surface.

4. The battery cell fixing device according to claim 3, characterized in that: A clamping plate is arranged on the second limiting frame; the clamping plate is arranged in a "V"-shaped structure, and the first clamping surface is arranged on the inner side of the clamping plate.

5. The battery cell fixing device according to claim 4, characterized in that: The first limiting frame is configured as a "J"-shaped clamping plate, the clamping plate is provided with a matching groove for the first limiting frame to pass through, and the first limiting frame is provided with a matching groove for passing through the clamping plate; the matching grooves on the clamping plate and the matching grooves on the first limiting frame are staggered.

6. The battery cell fixing device according to claim 5, characterized in that: Rubber pads are arranged on the inner side surfaces of the first clamping surface, the second clamping surface, the auxiliary clamping surface and the first limiting frame.

7. The battery cell fixing device according to claim 1, characterized in that: A pull ring is arranged on the top of the second limiting frame.

8. The battery cell fixing device according to claim 1, characterized in that: The clamping and pushing mechanism includes a screw rod and a sliding frame; the screw rod is threadedly connected to a fixed shaft seat; the screw rod is rotatably connected to the sliding frame; the sliding frame is pushed to move by rotating the screw rod, and the first limiting frame is arranged on the sliding frame.

9. The battery cell fixing device according to claim 8, characterized in that: The sliding frame is provided with a first push plate; the first limiting frame is provided with a guide column and a movable pull rod; the guide column is slidably connected with the first push plate; the movable pull rod passes through the first push plate and is threadedly connected with the adjusting nut; the first push plate is limited between the adjusting nut and the first limiting frame; a compression spring is sleeved on the movable pull rod, one end of the compression spring is abutted against the first limiting frame, and the other end of the compression spring is abutted against the first push plate.

10. The battery cell fixing device according to claim 9, characterized in that: The screw rod and the movable pull rod are located on the same axis; a rotating disk is arranged on the screw rod.

11. The battery cell fixing device according to any one of claims 8 to 10, characterized in that: The mounting frame is arranged on one side of the base, and the clamping and pushing mechanism is arranged on the other side of the base; an insulating plate is arranged in the middle of the base.

12. The battery cell fixing device according to claim 11, characterized in that: The shaft seat is arranged on the base; a slide rail is arranged on the base, and the slide frame is slidably connected to the slide rail.

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