Formation clamp device of power battery

Abstract

The utility model relates to the technical field of power battery production, in particular to a formation clamp device of a power battery. Comprising an elastic plate, clamping plates are fixed to the two ends of the elastic plate correspondingly, the distance between the ends, away from the elastic plate, of the two clamping plates is smaller than the distance between the ends, close to the elastic plate, of the two clamping plates, straight plates are integrally formed at the free ends of the two clamping plates correspondingly, and clamping units are fixed to the opposite end faces of the two straight plates correspondingly; a plurality of ribs are fixed on the clamping plates, the ribs are fixedly connected with a pressing strip, the pressing strip is fixedly connected with the straight plate, a conical block is arranged between the two clamping plates, a fixing sleeve is fixed on the elastic plate, the fixing sleeve penetrates through the elastic plate, a bolt is in threaded connection with the interior of the fixing sleeve, the bolt penetrates through the fixing sleeve, and one end of the bolt is rotationally connected with the conical block. The conical block moves towards the clamping plates by rotating the bolt, the pushing block can enable the two clamping plates to be far away from each other through the two connecting plates, and a battery is conveniently placed between the two clamping plates.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of power battery production technical field, specifically to a kind of power battery's formation fixture device. BACKGROUND

[0002] Since soft package power battery adopts aluminum-plastic composite film to be packed, in the case of using same raw material, relative to hard-shell battery, it has lighter weight, larger capacity, smaller internal resistance, flexible design, higher safety and other characteristics, is favored by more and more new energy vehicle enterprises and power battery manufacturers.

[0003] The formation process of soft package power battery, especially large-capacity soft package power battery (more than 50Ah), is an important process in the production process, with special process requirements and technical difficulties. Formation is the process of first charging the battery after liquid injection and standing, to form a solid electrolyte interface film (SEI film). Different formation processes result in different SEI films, and different SEI films have a greater impact on battery performance, especially on battery cycle performance. However, since soft package power battery adopts aluminum-plastic packaging structure, its external structure determines that the pole pieces cannot be closely arranged, and gaps are easily generated between the pole pieces. The gas generated during battery formation is also easily retained between the pole pieces, and the gas cannot be completely discharged during subsequent sealing, thereby affecting the service life of the battery.

[0004] The patent document with publication number CN207834489U discloses a battery formation clamp and a battery formation device. The battery formation clamp includes a first clamping plate, a second clamping plate, and a clamp. The first clamping plate, the second clamping plate, and the clamp are all detachably connected. The first clamping plate and the second clamping plate are both insulating clamping plates. The clamp is a resilient member. The first clamping plate and the second clamping plate are placed on the two surfaces of the battery, respectively. The battery is located between the first clamping plate and the second clamping plate. The clamp is used to clamp the first clamping plate and the second clamping plate to apply pressure to the battery. In the technical solution of the patent, when the first clamping plate and the second clamping plate clamp the power battery, the contact area of the clamp with the first clamping plate and the second clamping plate is small. The first clamping plate and the second clamping plate cannot apply uniform clamping force to the power battery. The gas and gaps in the part of the power battery away from the clamp cannot be effectively removed.

[0005] The patent document with the publication number CN211062800U discloses a battery formation clamp opener, which comprises an opening clamp mechanism and a formation clamp, the opening clamp mechanism comprises a base, a guide rail, a gas cylinder, a first opening clamp module and a second opening clamp module, the guide rail, the gas cylinder and the second opening clamp module are all fixed on the base, the first opening clamp module is oppositely arranged with the second opening clamp module and is connected with the gas cylinder, the first opening clamp module is in sliding fit with the guide rail, the first opening clamp module moves away from the second opening clamp module along the guide rail under the drive of the gas cylinder, the formation clamp comprises a clamp body and two second clamping plates, the two second clamping plates are arranged in the clamp body and oppositely arranged, the formation clamp is arranged between the first opening clamp module and the second opening clamp module, the first opening clamp module moves towards the second opening clamp module along the guide rail under the drive of the formation clamp. The opening clamp mechanism is controlled by the gas cylinder to realize the opening clamp operation, which replaces the traditional manual opening clamp method, effectively improves the production efficiency and reduces the labor cost, and the device has the advantages of simple structure, convenient operation and high automation degree. However, when the two second clamping plates of the clamp are separated, it is inconvenient to position the power battery. Utility model content

[0006] The main purpose of the utility model is to provide a formation clamp device for power batteries, which facilitates clamping and positioning of power batteries.

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by the utility model is as follows:

[0008] The utility model discloses a formation clamp device for power batteries, which comprises an elastic plate, a connecting plate is fixed at both ends of the elastic plate, the two connecting plates are symmetrically arranged, the distance between the end parts of the two connecting plates away from the elastic plate is smaller than the distance between the end parts of the two connecting plates close to the elastic plate, a flat plate is integrally formed on the free end of each connecting plate, and a clamping unit is fixed to the opposite end face of each flat plate.

[0009] Specifically, the rib is fixed to the opposite end face of the two clamping plates, the length direction of the rib is parallel to the length direction of the clamping plate, and the pressing strip is perpendicular to the rib.

[0010] Specifically, a limiting ring is fixed to the bolt outside the fixed sleeve, and when the bolt rotates and drives the taper block to move towards the clamping plate, the limiting ring can contact the fixed sleeve and limit the bolt and the taper block.

[0011] Specific, the end away from the clamp block fixed with a plurality of mutually parallel light pole, the axial direction of the light pole and the axial direction of the bolt parallel, light pole through the elastic plate, light pole and elastic plate sliding connection.

[0012] Specific, the side of the cone block towards the clamp block is slidably provided with a slide rod, the side of the cone block towards the clamp block is threadedly connected with a screw rod, the screw rod is parallel to the slide rod, the axial direction of the slide rod is parallel to the axial direction of the bolt, a positioning plate is arranged between the cone block and the clamp block, the screw rod is rotatably connected with the positioning plate, the slide rod is fixedly connected with the positioning plate, and the positioning plate is perpendicular to the clamp block.

[0013] Specific, the side away from the clamp block of the elastic plate is fixed with two ear plates.

[0014] Specific, further comprising a supporting plate, the supporting plate is fixed with a plug rod corresponding to the insertion hole of the ear plate, the plug rod is vertically arranged, and the supporting plate on one side of the plug rod is fixed with a pad.

[0015] Specific, the clamp block is made of insulating material.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1, by rotating the bolt so that the cone block moves to the clamp block direction, the push block can make two clamp plates away from each other through two connecting plates, and the battery can be placed between the two clamp plates.

[0018] 2, by setting the positioning plate, and the position of the positioning plate is adjustable, the positioning plate can position the power battery, and the positive and negative electrodes of the power battery are connected with the power line for formation.

[0019] 3, the rib can enhance the rigidity of the clamp plate, the pressing strip disperses the local pressure into surface contact, avoids the stress concentration on the surface of the battery caused by point contact of the traditional clamp, can ensure that the clamp plate applies uniform pressure to the power battery, and can effectively remove the gas and gap in the power battery.

[0020] 4, the clamp is placed on the supporting plate, the pad supports the rib on the lower clamp plate, and the plug rod penetrates the insertion hole of the ear plate, the bolt is rotated by using the electric wrench, the efficiency of separating the two clamp plates can be improved, and the clamping efficiency of the power battery can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the utility model.

[0022] Figure 2 It is a schematic view of the utility model.

[0023] Figure 3 It is Figure 1 A-A sectional view.

[0024] Figure 4 Figure 1 is a schematic view of the insertion rod penetrating the insertion hole of the ear plate.

[0025] The names of the components in the drawings are: 1, connecting plate, 2, elastic plate, 3, flat plate, 4, clamping plate, 5, rib, 6, pressing strip, 7, fixing sleeve, 8, bolt, 9, limiting ring, 10, taper block, 11, light rod, 12, positioning plate, 13, screw, 14, nut, 15, ear plate, 16, supporting plate, 17, cushion block, 18, insertion rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Embodiment one: refer to Figures 1-4 As shown in the figure, a power battery formation clamp device, including elastic plate 2, both ends of elastic plate 2 are fixed with connecting plate 1, two connecting plates 1 are symmetrically arranged, the distance between the end parts of two connecting plates 1 away from elastic plate 2 is less than the distance between the end parts close to elastic plate 2.

[0028] The free end of two connecting plates 1 is integrally formed with flat plate 3, and the opposite end faces of two flat plates 3 are fixed with clamping units.

[0029] The clamping unit includes clamping plate 4, which is made of insulating material. A plurality of ribs 5 are fixed on the clamping plate 4, and the plurality of ribs 5 are fixedly connected with the pressing strip 6, and the pressing strip 6 is fixedly connected with the flat plate 3.

[0030] The rib 5 is fixed on the opposite end face of the two clamping plates 4, the length direction of the rib 5 is parallel to the length direction of the clamping plate 4, and the pressing strip 6 is perpendicular to the rib 5.

[0031] The taper block 10 is arranged between the two connecting plates 1, the fixing sleeve 7 is fixed on the elastic plate 2, the fixing sleeve 7 penetrates the elastic plate 2, the bolt 8 is threadedly connected in the fixing sleeve 7, the bolt 8 penetrates the fixing sleeve 7, and one end of the bolt 8 is rotatably connected with the taper block 10.

[0032] The limiting ring 9 is fixed on the bolt 8 outside the fixing sleeve 7, when the bolt 8 rotates and drives the taper block 10 to move towards the clamping plate 4, the limiting ring 9 can contact the fixing sleeve 7 and limit the bolt 8 and the taper block 10.

[0033] The taper block 10 is fixed with a plurality of mutually parallel light rods 11 away from the clamping plate 4, the axial direction of the light rod 11 is parallel to the axial direction of the bolt 8, the light rod 11 penetrates the elastic plate 2, and the light rod 11 is slidably connected with the elastic plate 2.

[0034] Turning the bolt 8, the bolt 8 drives the taper block 10 to move towards the clamping plate 4, and the taper block 10 can make the two connecting plates 1 move away from each other during the movement towards the clamping plate 4. At the same time, the elastic plate 2 deforms elastically, and when the two connecting plates 1 move away from each other, the two clamping plates 4 move away from each other, and when the limiting ring 9 contacts the fixed sleeve 7, the bolt 8 and the taper block 10 are limited, and then the power battery can be placed between the two clamping plates 4.

[0035] Turning the bolt 8, the bolt 8 drives the taper block 10 to move away from the clamping plate 4, and the taper block 10 can make the two connecting plates 1 move away from each other during the movement towards the clamping plate 4. At the same time, the elastic plate 2 deforms elastically, and when the two connecting plates 1 move away from each other, the two clamping plates 4 move away from each other, and when the limiting ring 9 contacts the fixed sleeve 7, the bolt 8 and the taper block 10 are limited, and then the power battery can be placed between the two clamping plates 4.

[0036] By providing a plurality of ribs 5 and a pressing strip 6 on the clamping plate 4, the structural strength of the clamping plate 4 can be ensured, the clamping plate 4 can apply uniform pressure to the power battery, and the gas and gaps in the power battery can be effectively eliminated.

[0037] Example two: on the basis of example one, referring to Figures 1-4 The side of the taper block 10 towards the clamping plate 4 is slidably provided with a slide rod, and the side of the taper block 10 towards the clamping plate 4 is threadedly connected with a screw rod 13, the screw rod 13 is parallel to the slide rod, the axial direction of the slide rod is parallel to the axial direction of the bolt 8, a positioning plate 12 is arranged between the taper block 10 and the clamping plate 4, the screw rod 13 is rotationally connected with the positioning plate 12, a nut 14 is threadedly connected with the screw rod 13, the slide rod is fixedly connected with the positioning plate 12, and the positioning plate 12 is perpendicular to the clamping plate 4.

[0038] After the limiting ring 9 contacts the fixed sleeve 7, the two clamping plates 4 are in an open state, and when the power battery is placed between the two clamping plates 4, the positioning plate 12 can limit the battery.

[0039] At the same time, one end of the power battery towards the positioning plate 12 can be closely attached to the positioning plate 12, the positive and negative poles of the power battery are usually located at the end, and after one end of the power battery towards the positioning plate 12 is closely attached to the positioning plate 12, the positive and negative poles of the power battery can be quickly and accurately connected with the external power supply line, and the problems of poor contact or reduced formation efficiency caused by deviation can be avoided. Workers only need to place the end of the power battery against the positioning plate 12 to complete the preliminary placement, thereby reducing the manual alignment time.

[0040] Turning the screw rod 13 can adjust the position of the positioning plate 12, and the nut 14 can lock the screw rod 13 after abutting against the taper block 10, thereby being suitable for positioning power batteries of different sizes.

[0041] The contact surface of the positioning plate 12 and the power battery can be integrated with a visual detection or mechanical arm guiding system, thereby providing an interface for subsequent automatic production line upgrading.

[0042] Example three: on the basis of example 1, referring toFigures 1-4 As shown, two ear plates 15 are fixed on the side of the elastic plate 2 away from the clamping plate 4.

[0043] The forming clamp device of the power battery further comprises a supporting plate 16, the supporting plate 16 is fixed with a plug rod 18 corresponding to the insertion hole of the ear plate 15, the plug rod 18 is vertically arranged, and the supporting plate 16 on one side of the plug rod 18 is fixed with a cushion block 17.

[0044] When the power battery is installed or dismounted, the clamp is placed on the supporting plate 16, the cushion block 17 supports the rib 5 on the lower clamping plate 4, and the plug rod 18 penetrates the insertion hole of the ear plate 15. At this time, the clamp is stably arranged on the supporting plate 16, the screw 8 is rotated by using the electric wrench, the opening and closing efficiency of the two clamping plates 4 is improved, and the clamping efficiency of the power battery is improved.

[0045] The above only describes the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A formation fixture device of a power battery, comprising an elastic plate (2), both ends of the elastic plate (2) are fixed with a connecting plate (1), the two connecting plates (1) are symmetrically arranged, characterized in that, The distance between the ends of the two connecting plates (1) away from the elastic plate (2) is smaller than the distance between the ends close to the elastic plate (2), the free ends of the two connecting plates (1) are integrally formed with flat plates (3), and the opposite end faces of the two flat plates (3) are fixed with clamping units; the clamping unit comprises a clamping plate (4), a plurality of ribs (5) are fixed on the clamping plate (4), the plurality of ribs (5) are fixedly connected with a pressing strip (6), the pressing strip (6) is fixedly connected with the flat plate (3), a taper block (10) is arranged between the two connecting plates (1), a fixed sleeve (7) is fixed on the elastic plate (2), the fixed sleeve (7) penetrates the elastic plate (2), a bolt (8) is threadedly connected in the fixed sleeve (7), the bolt (8) penetrates the fixed sleeve (7), and one end of the bolt (8) is rotatably connected with the taper block (10).

2. The formation fixture device of claim 1, wherein, The rib (5) is fixed on the opposite end faces of the two clamping plates (4), the length direction of the rib (5) is parallel to the length direction of the clamping plate (4), and the pressing strip (6) is perpendicular to the rib (5).

3. The formation fixture device of claim 1, wherein, The bolt (8) on the outside of the fixed sleeve (7) is fixed with a limiting ring (9), when the bolt (8) rotates and drives the taper block (10) to move towards the clamping plate (4), the limiting ring (9) can contact the fixed sleeve (7) and limit the bolt (8) and the taper block (10).

4. The formation fixture device of claim 1, wherein, The taper block (10) is fixed with a plurality of parallel light rods (11) at one end away from the clamping plate (4), the axial direction of the light rod (11) is parallel to the axial direction of the bolt (8), the light rod (11) penetrates the elastic plate (2), and the light rod (11) is slidably connected with the elastic plate (2).

5. The formation fixture device of claim 1, wherein, A slide rod is slidably arranged on one side of the taper block (10) facing the clamping plate (4), a screw rod (13) is threadedly connected on one side of the taper block (10) facing the clamping plate (4), the screw rod (13) is parallel to the slide rod, the axial direction of the slide rod is parallel to the axial direction of the bolt (8), a positioning plate (12) is arranged between the taper block (10) and the clamping plate (4), the screw rod (13) is rotatably connected with the positioning plate (12), the slide rod is fixedly connected with the positioning plate (12), and the positioning plate (12) is perpendicular to the clamping plate (4).

6. The formation fixture device of claim 5, wherein, The screw rod (13) is threadedly connected with a nut (14).

7. The formation fixture device of claim 1, wherein, Two ear plates (15) are fixed on one side of the elastic plate (2) away from the clamping plate (4).

8. The formation fixture device of claim 7, wherein, A supporting plate (16) is further arranged, a plug rod (18) corresponding to the insertion hole of the ear plate (15) is fixed on the supporting plate (16), the plug rod (18) is vertically arranged, and a cushion block (17) is fixed on one side of the supporting plate (16) of the plug rod (18).

9. The formation fixture device of claim 1, wherein, The clamping plate (4) is made of insulating material.

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