A kind of laser welding strength testing device of aluminum shell lithium ion battery

Abstract

The application relates to the technical field of lithium battery processing, in particular to a laser welding strength testing device for aluminum shell lithium ion batteries which comprises a device body, wherein the device body comprises a first end portion, a second end portion, a first connecting rod and a second connecting rod; the first end portion and the second end portion are oppositely arranged, rotating mechanisms are arranged on the first end portion and the second end portion, and the first end portion and the second end portion can rotate under the driving of the rotating mechanisms; the first connecting rod and the second connecting rod pass through the first end portion and the second end portion, and aluminum shell lithium ion battery groups are fixed on the first connecting rod and the second connecting rod; the laser welding strength testing device for aluminum shell lithium ion batteries containing the first end portion, the second end portion, the first connecting rod and the second connecting rod is arranged, so that a batch of aluminum shell lithium ion battery groups can be fixed thereon and rotate together to complete welding strength testing.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lithium battery processing, and particularly relates to a laser welding strength testing device for aluminum shell lithium ion batteries. BACKGROUND

[0002] Power lithium ion batteries are key technologies for the development of electric vehicles, in order to guarantee the stability of the work, the laser welding strength of the lithium ion battery needs to be tested, a laser welding strength online testing device is disclosed in Chinese Patent No. CN209589700U, wherein the testing is completed by hand through the clamping structure, although the overall structure is simple, but only a single lithium ion battery can be tested during use, and the working efficiency is relatively low, and Chinese Patent No. CN209001048U discloses a laser welding strength testing auxiliary tool for a lithium battery module end plate and a side plate, which provides a thought of realizing laser welding strength testing on the lithium battery module based on the tool, but large-scale testing cannot be realized. SUMMARY

[0003] The application aims at the above problems, and provides a laser welding strength testing device for aluminum shell lithium ion batteries.

[0004] The adopted technical scheme is that the laser welding strength testing device for aluminum shell lithium ion batteries comprises a device body, wherein the device body comprises a first end portion, a second end portion, a first connecting rod and a second connecting rod, the first end portion and the second end portion are oppositely arranged, rotating mechanisms are arranged on the first end portion and the second end portion, and the rotating mechanisms can rotate under the driving of the rotating mechanisms, the first connecting rod and the second connecting rod pass through the first end portion and the second end portion, and aluminum shell lithium ion battery groups are fixed on the first connecting rod and the second connecting rod.

[0005] Optionally, the rotating mechanism comprises a connecting seat and a rotating shaft, the connecting seat is arranged on the side of the first end portion and the second end portion which faces away from each other, the rotating shaft is arranged on the connecting seat, and the rotating shaft is connected with the power output end of the motor.

[0006] Optionally, the opposite sides of the first end portion and the second end portion are each provided with a limiting groove, a limiting rod is arranged between the first end portion and the second end portion, the limiting rod is inserted into the limiting groove of the first end portion and the limiting groove of the second end portion at two ends, and the bottom of the limiting rod abuts against the aluminum shell lithium ion battery group.

[0007] Further, a limiting hole is arranged at the bottom of the limiting groove, and the limiting rod is fixed by a fixing bolt which passes through the limiting hole.

[0008] Optionally, the first end portion and the second end portion are circular, and the center of the connecting seat coincides with the center of the first end portion and / or the second end portion.

[0009] Optionally, the first end and the second end are provided with a first movable slot for the first connecting rod to move and a second movable slot for the second connecting rod to move.

[0010] The beneficial effects of the present application include at least one of the following:

[0011] 1. By setting the aluminum shell lithium ion battery laser welding strength test device comprising a first end, a second end, a first connecting rod and a second connecting rod, a batch of aluminum shell lithium ion battery packs can be fixed thereon and rotated together to complete the welding strength test.

[0012] 2. The problem of low work efficiency of the existing clamping structure is solved, which can only test a single lithium ion battery when held by hand, although the overall structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an aluminum shell lithium ion battery laser welding strength test device.

[0014] Figure 2 It is a schematic diagram of the end structure of an aluminum shell lithium ion battery laser welding strength test device.

[0015] Figure 3 It is a schematic diagram of the end structure of another aluminum shell lithium ion battery laser welding strength test device.

[0016] In the figure, 1 is the first end, 2 is the second end, 3 is the rotating shaft, 4 is the connecting seat, 5 is the first connecting rod, 6 is the second connecting rod, 7 is the aluminum shell lithium ion battery pack, 8 is the ear buckle, 9 is the limiting rod, 10 is the fixing bolt, 11 is the first limiting slot, 12 is the third connecting rod, 13 is the fourth connecting rod, 14 is the first movable slot, 15 is the second movable slot, 16 is the third movable slot, and 17 is the fourth movable slot. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the scope of the present application.

[0018] In the description of the present application, it should be pointed out that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] As shown in Figure 1 An aluminum shell lithium ion battery laser welding strength test device includes a device body, wherein the device body includes a first end 1, a second end 2, a first connecting rod 5 and a second connecting rod 6, the first end 1 and the second end 2 are oppositely arranged, and the first end 1 and the second end 2 are provided with rotating mechanisms, and can rotate under the driving of the rotating mechanisms, the first connecting rod 5 and the second connecting rod 6 pass through the first end 1 and the second end 2, and the first connecting rod 5 and the second connecting rod 6 are fixed with an aluminum shell lithium ion battery pack 7.

[0020] The purpose of such design is that by setting the aluminum shell lithium ion battery laser welding strength test device containing the first end, the second end, the first connecting rod and the second connecting rod, a batch of aluminum shell lithium ion battery packs can be fixed thereon and rotated together to complete the welding strength test. The problem of low work efficiency caused by the fact that the existing clamping structure can only test a single lithium ion battery when held by hand is solved.

[0021] It should be pointed out that based on the difference in welding strength test method, the matching test device selected also differs, such as the break point of welding can be recognized by high-speed shooting, or the place where the empty package appears, so the device is placed below the high-speed shooting video probe, and the aluminum shell lithium ion battery pack is turned over by rotation, and the recognition is completed after multiple acquisitions.

[0022] Meanwhile, the rotating mechanism includes a connecting seat 4 and a rotating shaft 3, the connecting seat 4 is arranged on the side opposite to the first end 1 and the second end 2, the rotating shaft 3 is arranged on the connecting seat 4, the rotating shaft 3 is connected with the motor power output end, the first end 1 and the second end 2 are circular, the center of the connecting seat 4 coincides with the center of the first end 1 and / or the second end 2.

[0023] In the embodiment, the opposite sides of the first end part 1 and the second end part 2 are provided with limiting grooves, and a limiting rod 9 is arranged between the first end part 1 and the second end part 2, the two ends of the limiting rod 9 are respectively inserted into the limiting grooves of the first end part 1 and the second end part 2, the bottom of the limiting rod 9 abuts against the aluminum shell lithium ion battery pack 7, the bottom of the limiting groove is provided with a limiting hole, and the limiting rod 9 is fixed by a fixing bolt 10 passing through the limiting hole.

[0024] The purpose of such design is that the limiting rod can fix the aluminum shell lithium ion battery pack from top to bottom, when fixing, first place the aluminum shell lithium ion battery pack on the first connecting rod 5 and the second connecting rod 6, and complete the fixing from the horizontal angle through the ear plate arranged thereon, then put the limiting rod into the limiting groove until abutting against the aluminum shell of the lithium ion battery pack, and then complete the fixing of the limiting rod through the fixing bolt, so that the fixing is completed from the horizontal and vertical directions, and the aluminum shell lithium ion battery pack is not easy to fall off in rotation.

[0025] In the embodiment, the first end part 1 and the second end part 2 are both provided with a first movable groove 14 for the movement of the first connecting rod 5 and a second movable groove 15 for the movement of the second connecting rod 6.

[0026] The purpose of such design is that, since there are busy points in the field of view when testing, by arranging the first movable groove and the second movable groove on the first end part and the second end part, the placement position of the entire aluminum shell lithium ion battery pack can be changed, and the place that is blocked can be collected when collecting multiple pictures.

[0027] As shown in Figure 2 and Figure 3 In the embodiment, a double-row aluminum shell lithium ion battery pack test structure is provided, that is, a third connecting rod, a fourth connecting rod, a third movable groove and a fourth movable groove are symmetrically arranged on the basis of the original structure, so that the number of tested batteries is further increased, and the work efficiency is improved.

[0028] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser welding strength testing device for aluminum-cased lithium-ion batteries, comprising a device body, characterized in that: The device body includes a first end (1), a second end (2), a first connecting rod (5), and a second connecting rod (6). The first end (1) and the second end (2) are arranged opposite to each other, and a rotating mechanism is provided on both the first end (1) and the second end (2). The rotating mechanism can rotate under the drive of the rotating mechanism. The first connecting rod (5) and the second connecting rod (6) pass through the first end (1) and the second end (2). An aluminum shell lithium-ion battery pack (7) is fixed on the first connecting rod (5) and the second connecting rod (6). The rotating mechanism includes a connecting seat (4) and a rotating shaft (3). The connecting seat (4) is respectively located on the opposite side of the first end (1) and the second end (2). The rotating shaft (3) is located on the connecting seat (4) and is connected to the power output end of the motor. Both the first end (1) and the second end (2) are circular, and the center of the connecting seat (4) coincides with the center of the first end (1) and / or the second end (2); The first end (1) and the second end (2) are provided with limiting grooves on opposite sides, and a limiting rod (9) is provided between the first end (1) and the second end (2). The two ends of the limiting rod (9) are respectively inserted into the limiting groove of the first end (1) and the limiting groove of the second end (2), and the bottom of the limiting rod (9) abuts against the aluminum shell lithium-ion battery pack (7). The bottom of the limiting groove is provided with a limiting hole, and the limiting rod (9) is fixed by a fixing bolt (10) passing through the limiting hole; The first end (1) and the second end (2) are each provided with a first movable groove (14) for the first connecting rod (5) to move and a second movable groove (15) for the second connecting rod (6) to move.

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