Foldable multi-size battery universal tool

Abstract

The utility model belongs to the technical field of battery test auxiliary equipment, and discloses a foldable universal tool for batteries of multiple sizes. Comprising at least two foldable aluminum plates arranged in parallel and a screw penetrating through the aluminum plates, a space for containing a battery is formed between the aluminum plates, and a limiting and fixing structure is arranged on the periphery of the screw in a sleeving mode to limit relative displacement between the screw and the aluminum plates; a to-be-tested battery is placed between the aluminum plates to form a space for accommodating the battery, and the battery is tested; the to-be-tested battery is large in size, the aluminum plate is in an unfolded state, the to-be-tested battery is small in size, and the aluminum plate is in a folded state. According to the utility model, through the screw rod and the foldable aluminum plate with the insulating layer, the batteries with multiple sizes can be fixed, and the requirements of safety tests and electrical performance tests on the fixing tool are met. The cost is low; the operation is simple; the utilization rate is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of foldable multi-size battery general tool, belong to battery test auxiliary equipment technical field. BACKGROUND

[0002] With the rapid development of science and technology, lithium ion batteries are everywhere in daily life and product applications, lithium ion batteries have the characteristics of high energy density, excellent cycle performance and no memory effect, and are widely used in electronic products, such as notebook computers, mobile phones, mobile power supplies, etc., and are applied in electric vehicles and energy storage power stations. During the process of testing the electrical performance of lithium ion batteries, the volume change of the materials or the gas generated by the side reaction will cause the interface of the battery to deteriorate, and the poor interface will increase the polarization of the battery, causing capacity decay. During the process of testing the safety performance of lithium ion batteries (overcharge, overcharge thermal runaway), heat and gas will be generated during overcharge or overcharge thermal runaway, and if the battery does not have a clamp or the safety valve cannot be normally opened, the battery is prone to explosion. Therefore, by applying a suitable fixture to test the electrical performance and safety of the battery, a certain mechanical pressure is applied to the battery, which can also simulate the state of the battery in the battery pack and ensure good contact between the internal interfaces of the battery.

[0003] At present, the size of lithium batteries on the market is very diverse, including square cells, short knife cells, and blade cells. The size and thickness of cells from the same manufacturer vary, and the utilization rate of each type of size tool is not high. The accumulation of tool fixtures is increasing, increasing the enterprise's accumulation. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of foldable multi-size battery general tool to solve the problems of insufficient adaptability of existing battery fixture device and low utilization rate of fixture.

[0005] To achieve the purpose of solving the above problems, the utility model adopts the technical scheme of a kind of foldable multi-size battery general tool, which includes at least two parallelly arranged foldable aluminum plates, a screw rod penetrating through the aluminum plates, forming a space for accommodating batteries between the aluminum plates, and a limiting and fixing structure is sleeved on the outer periphery of the screw rod to limit the relative displacement between the screw rod and the aluminum plates.

[0006] The battery to be tested is placed in the space formed between the aluminum plates for accommodating batteries, and the battery is tested. The aluminum plates are in an unfolded state when the battery to be tested is large in size, and the aluminum plates are in a folded state when the battery to be tested is small in size.

[0007] According to the utility model, further, the limiting and fixing structure includes a gasket and a nut, and the lower end of the screw rod is fixed by the gasket and the nut.

[0008] According to the utility model, further, the spring both ends are provided with gasket.

[0009] According to the utility model, further, the spring both ends are provided with gasket.

[0010] According to the utility model, further, the foldable aluminium plate is folded by I-shaped buckle.

[0011] According to the utility model, further, the screw and aluminium plate relative longitudinal movement changes the interval of the space containing battery, is applicable to square battery of different thickness.

[0012] According to the utility model, further, the aluminium plate is equipped with insulating layer.

[0013] Compared with prior art, the utility model has following beneficial effects:

[0014] The utility model provides a foldable multi -size battery general tool, through foldable with insulating layer's aluminium plate and screw, can realize the fixing of battery of different thickness and length.

[0015] The utility model provides a foldable multi -size battery general tool, simple production, low cost, places battery between two foldable with insulating layer's aluminium plates, adjusts the position of screw, fixes one end with nut and gasket, and the other end can fix battery with spring and nut and gasket, and spring provides variable space for battery expansion during testing. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the unfolded structure schematic view of a foldable multi -size battery general tool of the utility model,

[0017] Figure 2 It is the folding structure schematic view of a foldable multi -size battery general tool of the utility model.

[0018] Fig. 1 aluminium plate 2 screw 3 gasket 4 nut 5 spring 6 I-shaped buckle. DETAILED DESCRIPTION

[0019] In order to make the utility model more obvious and easy to understand, with preferred embodiment, and cooperation figure are as follows in detailed description:

[0020] As Figure 1The utility model provides a kind of foldable multi-size battery general tool, including at least two parallelly arranged foldable aluminium plate 1, screw rod 2 passing through all aluminium plate 1, gasket 3 sleeved on the outer periphery of screw rod 2, nut 4 limiting the up-down displacement of screw rod 2, spring 5 sleeved on the outer periphery of screw rod 2, and foldable aluminium plate 1 is folded by I-shaped block 6 arranged at midline.

[0021] The utility model provides a kind of foldable multi-size battery general tool, such as Figure 1 As shown, including mutually parallel foldable aluminium plate 1, four screw rods 2, placing blade cell between two foldable aluminium plate 1, fixing two aluminium plate 1 with four screw rods 2, fixing one end of screw rod 2 with gasket 3 and nut 4, and fixing other end using gasket 3, spring 5 and nut 4. Preferably, aluminium plate 1 surface is provided with insulating layer.

[0022] In order to facilitate folding and fixing, aluminium plate 1 surface includes two groups of screw rod mounting holes of inner ring and outer ring, each group of screw rod mounting hole is four, and is symmetrically distributed about folding midline of aluminium plate 1, and there are two screw rod mounting holes of inner ring and two screw rod mounting holes of outer ring on each side, in unfolded state, screw rod 2 passes through the screw rod mounting hole of outer ring, in folded state, the screw rod mounting hole of outer ring and inner ring on the two sides of folding midline is coincided respectively, screw rod 2 passes through the coincided screw rod mounting hole, to realize the folding and fixing of aluminium plate 1.

[0023] The working principle of the utility model is:

[0024] When large size cell needs to be tested, aluminium plate 1 is in unfolded state, as shown in Figure 1 Place the battery to be tested between two foldable aluminium plate 1, battery is close to foldable aluminium plate 1 surface, then adjust the interval between two foldable aluminium plate 1 by screw rod 2, one end of screw rod 2 passes through the part of lower aluminium plate 1 and is fixed with nut 4 and gasket 3, the other end passes through the part of upper aluminium plate 1 and is sleeved with spring 5, the initial end and terminal end of spring 5 are provided with gasket 3, and the upper of screw rod 2 is tightened by nut 4, to realize the interval fixing between two aluminium plate 1, and fix battery between two foldable aluminium plate 1.

[0025] When small size cell needs to be tested, aluminium plate 1 is folded relative to I-shaped block 6, so that aluminium plate 1 is in folded state, as shown in Figure 2As shown, the battery to be tested is placed between two foldable aluminum plates 1, the battery is close to the surface of the foldable aluminum plate 1, and the spacing between the two foldable aluminum plates 1 is adjusted by the screw rod 2; one end of the screw rod 2 penetrates the aluminum plate 1 below and is fixed by the nut 4 and the washer 3, and the other end penetrates the part of the aluminum plate 1 above and is sleeved with the spring 5, the starting end and the ending end of the spring 5 are provided with the washer 3, the upper part of the screw rod 2 is tightened by the nut 4, the spacing between the two aluminum plates 1 is fixed, the battery is fixed between the two foldable aluminum plates 1, and the space for the expansion of the battery is provided by the deformation of the spring 5.

[0026] The foldable multi-size battery general tool provided by the utility model can realize the fixation of multi-size batteries by adjusting four screw rods and two foldable aluminum plates. The battery clamp tool provided by the utility model has simple structure, is easy to manufacture, has low manufacturing cost and is simple to operate.

[0027] The above is only the preferred embodiment of the utility model, and is not any form and substantial limitation of the utility model. It should be pointed out that, for ordinary skilled personnel in the technical field, some improvements and supplements can be made without departing from the utility model, and these improvements and supplements should be regarded as the protection range of the utility model. For those skilled in the art, some changes, modifications and equivalent changes of the above disclosed technical content without departing from the spirit and scope of the utility model are equivalent embodiments of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the utility model are still within the range of the technical scheme of the utility model.

Claims

1. A foldable multi-size battery universal tooling, characterized by, The application relates to a battery testing device, which comprises at least two parallel foldable aluminum plates, a screw rod penetrating through the aluminum plates to form a space for accommodating a battery between the aluminum plates, and a limiting and fixing structure sleeved on the outer periphery of the screw rod to limit the relative displacement between the screw rod and the aluminum plates. The battery to be tested is placed between the aluminum plates to form a space for accommodating the battery, and the battery is tested; when the battery to be tested is large in size, the aluminum plates are in an unfolded state; and when the battery to be tested is small in size, the aluminum plates are in a folded state.

2. A multi-size battery general tool according to claim 1, wherein, The limiting and fixing structure comprises a gasket and a nut, and the lower end of the screw rod is fixed through the gasket and the nut.

3. A multi-size battery general tool according to claim 2, wherein, The upper end of the screw rod is provided with a spring, the upper end of the spring is provided with a nut, and the position of the spring is limited; the spring provides an expansion space for the battery through deformation.

4. A multi-size battery general tool according to claim 3, wherein, The two ends of the spring are provided with gaskets.

5. A multi-size battery collapsible general tool according to claim 1, wherein, The foldable aluminum plates are folded through H-shaped buckles.

6. A multi-size battery general tool according to claim 1, wherein, The screw rod and the aluminum plates move longitudinally relative to each other to change the distance between the space for accommodating the battery, and the device is suitable for square batteries of different thicknesses.

7. A multi-size battery general tool according to claim 1, wherein, The aluminum plates are each provided with an insulating layer.

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