Auxiliary device for thermal runaway of lithium ion battery

Abstract

The utility model discloses an auxiliary device for thermal runaway of a lithium ion battery, which belongs to the technical field of lithium ion battery production test devices and comprises a base, a support frame and a clamping module are arranged above the base, and a fire extinguishing module positioned right above the clamping module is arranged on the support frame. And the fire extinguishing module comprises a liquid storage tank installed on the supporting frame, one side of the liquid storage tank is connected with a liquid outlet pipe, a water spraying pump is arranged on the liquid outlet pipe, and a spraying head is installed at the liquid outlet end of the liquid outlet pipe. By adopting the auxiliary device for thermal runaway of the lithium ion battery, common lithium batteries in different shapes can be effectively clamped and fixed, the contact area between the auxiliary device and the lithium battery is smaller, the accuracy of an experiment result is favorably improved, when the lithium battery is subjected to thermal runaway and is on fire, timely fire extinguishing is also facilitated, and the safety of the experiment is improved. And the experiment safety can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium ion battery production test device technical field especially is related to a kind of auxiliary device of lithium ion battery thermal runaway. BACKGROUND

[0002] With the rapid development of new energy industry, especially the wide application of electric vehicles and energy storage systems, the demand for high-performance and high-safety batteries is increasing. As one of the current mainstream secondary batteries, lithium ion batteries are widely used in various scenarios due to their high energy density, long cycle life, and other advantages. However, under certain extreme conditions (such as high temperature environment, overcharge / overdischarge, external short circuit, etc.), lithium ion batteries may experience thermal runaway, which can lead to serious safety accidents. Therefore, developing effective thermal runaway protection measures is crucial for improving the safety performance of lithium ion batteries.

[0003] Currently, during the detection of lithium batteries, the lithium batteries are directly placed on the operation table. Since the lithium batteries directly contact the operation table, it affects the uniformity of heating and cooling of the lithium batteries, resulting in inaccurate experimental data of lithium battery thermal runaway. Moreover, when lithium batteries experience thermal runaway, they usually catch fire, posing a certain risk of fire. SUMMARY

[0004] The utility model aims at providing a kind of auxiliary device of lithium ion battery thermal runaway, can effectively be clamped and fixed to the lithium battery of different shapes commonly seen, and there is smaller contact area between it and lithium battery, it is favorable to improve the accuracy of experimental results, when lithium battery catches fire when thermal runaway occurs, it is also convenient to extinguish fire in time, it is favorable to improve the safety of experiment.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of auxiliary device of lithium ion battery thermal runaway, including base, the base is provided with support frame and clamping module above, the support frame is provided with fire extinguishing module above clamping module.

[0006] Preferably, the fire extinguishing module includes a liquid storage tank mounted on the support frame, one side of the liquid storage tank is connected with a liquid outlet pipe, a water jet pump is arranged on the liquid outlet pipe, and a spray head is mounted on the liquid outlet end of the liquid outlet pipe.

[0007] Preferably, the liquid storage tank is filled with perfluorohexanone extinguishing agent.

[0008] Preferably, the inside of the base is a hollow structure with an open top and a back-shaped recess, and a liquid leakage plate is arranged on the back-shaped recess.

[0009] Preferably, one side of the base is provided with an opening and a liquid collection groove.

[0010] Preferably, the clamping module comprises support plates fixed on both sides of the liquid leakage plate, sliding rails are installed on the support plates, two sliding blocks are arranged inside the sliding rails, support rods are connected above each of the sliding blocks, and pressing assemblies are arranged at the top of the support rods.

[0011] Preferably, the pressing assembly comprises a limiting frame connected at the top of the support rod, a threaded hole is arranged above the limiting frame and a pressing screw rod is installed, a bearing is arranged at the bottom of the pressing screw rod, an arc-shaped pressing plate is connected at the bottom of the bearing, and an arc-shaped groove vertically corresponding to the arc-shaped pressing plate is arranged on the limiting frame.

[0012] Preferably, horizontal pressing plates are connected at the two sides of the arc-shaped pressing plate.

[0013] Preferably, anti-skid pads are arranged at the bottom of the arc-shaped pressing plate and the horizontal pressing plates.

[0014] Preferably, grooves are arranged at the side surface of the sliding rail, screw posts protruding out of the grooves are connected on the sliding blocks, and fastening nuts are arranged at the outer side of the screw posts.

[0015] Therefore, the auxiliary device for lithium ion battery thermal runaway can effectively clamp and fix common lithium batteries with different shapes, has a small contact area with the lithium battery, is favorable for improving the accuracy of experimental results, is convenient for timely extinguishing the lithium battery when the lithium battery catches fire, and is favorable for improving the safety of the experiment.

[0016] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of an embodiment of the auxiliary device for lithium ion battery thermal runaway of the utility model;

[0018] Figure 2 is a top view structural schematic diagram of a base of the embodiment of the auxiliary device for lithium ion battery thermal runaway of the utility model;

[0019] Figure 3 is a structural schematic diagram of a liquid collecting groove of the embodiment of the auxiliary device for lithium ion battery thermal runaway of the utility model;

[0020] Figure 4 is a side view structural schematic diagram of the embodiment of the auxiliary device for lithium ion battery thermal runaway of the utility model;

[0021] Figure 5 is a structural schematic diagram of a pressing assembly of the embodiment of the auxiliary device for lithium ion battery thermal runaway of the utility model.

[0022] Reference signs

[0023] 1, base; 2, support frame; 3, liquid storage tank; 4, liquid outlet pipe; 5, water spray pump; 6, spray head; 7, liquid leakage plate; 8, liquid collection groove; 9, support plate; 10, sliding rail; 11, sliding block; 12, support rod; 13, pressing assembly; 131, limiting frame; 132, downward pressing screw; 133, bearing; 134, arc-shaped downward pressing plate; 135, arc-shaped groove; 136, horizontal pressing plate; 137, non-slip pad; 14, stud; 15, fastening nut. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model is further described below with reference to the drawings and embodiments.

[0025] Unless otherwise defined, technical terms or scientific terms used in the utility model should be understood as the usual meaning understood by a person with ordinary skills in the art to which the utility model belongs. The terms "first", "second" and similar terms used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0026] Embodiment one

[0027] As shown in Figure 1 The utility model provides a kind of auxiliary device of lithium ion battery thermal runaway, including base 1, support frame 2 and clamping module are provided on the upper portion of base 1, support frame 2 is provided with fire extinguishing module located just above clamping module.

[0028] Wherein, fire extinguishing module includes the liquid storage tank 3 installed on support frame 2, one side of liquid storage tank 3 is connected with liquid outlet pipe 4, water spray pump 5 is provided on liquid outlet pipe 4, spray head 6 is installed on the liquid outlet end of liquid outlet pipe 4, spray head 6 is arranged just above clamping module, when lithium battery is on fire, it is more convenient to extinguish fire in time.Liquid storage tank 3 is injected with perfluorohexanone extinguishing agent, which can quickly extinguish fire.

[0029] As shown in Figure 2As shown, the inside of the base 1 is hollow and the top is open and provided with a meandering groove, and a liquid leakage plate 7 is arranged on the meandering groove, and the meandering groove can better limit the liquid leakage plate 7 and prevent the liquid leakage plate 7 from moving easily. Figure 3 As shown, the opening of the base 1 is provided with a liquid collecting groove 8, which is convenient for collecting the extinguishing agent falling from the spray head 6.

[0030] As shown in Figure 1 and Figure 4 The clamping module includes support plates 9 fixed on both sides of the liquid leakage plate 7, and the support plates 9 are provided with sliding rails 10, and the sliding rails 10 are provided with two sliding blocks 11 inside, and the upper part of each sliding block 11 is connected with a support rod 12, and the top of the support rod 12 is provided with a pressing assembly 13, and the distance between the two pressing assemblies 13 can be adjusted by adjusting the position of the two sliding blocks 11 in the sliding rail 10, so as to be suitable for lithium batteries of different sizes.

[0031] The side surface of the sliding rail 10 is provided with a slot, and the sliding block 11 is connected with a stud 14 extending out of the slot, and the outer side of the stud 14 is provided with a fastening nut 15. By tightening the fastening nut 15, each sliding block 11 can be fixed, and the clamping of the measured lithium battery during the experiment can be more stable.

[0032] As shown in Figure 5 The pressing assembly 13 includes a limiting frame 131 connected to the top of the support rod 12, and a pressing screw 132 is installed on the upper part of the limiting frame 131 and provided with a threaded hole, and the position of the pressing screw 132 in the vertical direction can be adjusted by rotating the pressing screw 132. The bottom of the pressing screw 132 is provided with a bearing 133, and the bottom of the bearing 133 is connected with an arc-shaped pressing plate 134, and the bearing 133 can prevent the arc-shaped pressing plate 134 from rotating with the pressing screw 132. An arc-shaped groove 135 corresponding to the upper and lower of the arc-shaped pressing plate 134 is formed in the limiting frame 131, which is more convenient for fixing the cylindrical lithium battery. The two sides of the arc-shaped pressing plate 134 are connected with horizontal pressing plates 136, which can be more suitable for fixing the blocky lithium battery. The bottom of the arc-shaped pressing plate 134 and the horizontal pressing plate 136 is provided with a non-slip pad 137, which can effectively improve the clamping stability of the measured lithium battery and prevent the lithium battery from being easily dislocated.

[0033] Therefore, the auxiliary device for lithium ion battery thermal runaway can effectively clamp and fix common lithium batteries of different shapes, and has a small contact area with the lithium battery, which is conducive to improving the accuracy of the experimental results. When the lithium battery catches fire due to thermal runaway, it is also convenient to extinguish the fire in time, which is conducive to improving the safety of the experiment.

[0034] It should be pointed out finally that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been explained in detail with reference to the preferred embodiments, ordinary skilled in the art should understand that: its still can modify or equivalent replace the technical solutions of the utility model, and these modifications or equivalent replacements also can not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. An auxiliary device for thermal runaway of a lithium-ion battery, characterized in that: Includes a base, on which a support frame and a clamping module are provided, and on which a fire extinguishing module is located directly above the clamping module is provided; The fire extinguishing module includes a liquid storage tank installed on the support frame, a liquid outlet pipe connected to one side of the liquid storage tank, a water pump installed on the liquid outlet pipe, and a nozzle installed at the liquid outlet end of the liquid outlet pipe. The base has a hollow interior and an opening at the top with a U-shaped groove. A drain plate is provided on the U-shaped groove. The base has an opening on one side and a liquid collection tank is provided. The clamping module includes a support plate fixed on both sides of the leakage plate. A slide rail is installed on the support plate. Two sliders are provided inside the slide rail. A support rod is connected above each slider. A clamping component is provided on the top of each support rod. The clamping assembly includes a limiting frame connected to the top of the support rod. The limiting frame has a threaded hole on its upper part and a pressing screw is installed thereon. The bottom of the pressing screw is provided with a bearing. The bottom of the bearing is connected to an arc-shaped pressing plate. The limiting frame has an arc-shaped groove that is vertically corresponding to the arc-shaped pressing plate. Both sides of the arc-shaped lower pressure plate are connected to horizontal pressure plates.

2. The auxiliary device for thermal runaway of a lithium-ion battery according to claim 1, characterized in that: The storage tank is filled with perfluorohexanone fire extinguishing agent.

3. The auxiliary device for thermal runaway of a lithium-ion battery according to claim 1, characterized in that: Both the bottom of the arc-shaped lower pressure plate and the horizontal pressure plate are equipped with anti-slip pads.

4. The auxiliary device for thermal runaway of a lithium-ion battery according to claim 1, characterized in that: The slide rail has a slot on its side, and each slider is connected to a stud that extends out of the slot. A fastening nut is provided on the outside of the stud.

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