Lithium ion battery aluminum shell blasting detection tool

Abstract

The utility model provides a lithium ion battery aluminum shell blasting detection tool which comprises a supporting frame, the supporting frame comprises an upper cover plate, two sets of side stand columns are arranged below the upper cover plate, and a base is fixedly installed at the bottoms of the lower portions of the side stand columns; an air pump is arranged in the middle of the upper end of the upper cover plate, a lower supporting rod is arranged at the bottom of the air pump, a gland is fixedly installed at the bottom of the lower supporting rod through a bolt, and the pressing structure makes contact with an aluminum shell below through the gland, so that the pressing action on the blasting tool is achieved. According to the utility model, the gland is connected with the aluminum shell in a pressing manner, the aluminum shell of a product is placed at the upper end of the upper connecting port, sealing rings are arranged on the upper and lower parts of the upper connecting port, external air supply equipment is guided into the circular pipe through the pipeline and then is guided into the aluminum shell, so that a sealing experiment is carried out on blasting equipment of the aluminum shell, and air pressure can be transmitted to the aluminum shell from the bottom of the circular pipe; therefore, blasting detection is realized.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion batteries, and in particular to a tooling for detecting the explosion of aluminum casings of lithium-ion batteries. Background Technology

[0002] A lithium-ion battery is a rechargeable battery that primarily functions by the movement of lithium ions between the positive and negative electrodes. During charging and discharging, Li+ ions repeatedly insert and extract between the two electrodes: during charging, Li+ ions extract from the positive electrode, pass through the electrolyte, and insert into the negative electrode, leaving the negative electrode in a lithium-rich state; the reverse occurs during discharging.

[0003] Lithium-ion batteries use lithium ions embedded in carbon (petroleum coke and graphite) to form the negative electrode (traditional lithium batteries use lithium or lithium alloys as the negative electrode). The positive electrode material commonly used is LixCoO2, but LixNiO2 and LixMnO4 are also used. The electrolyte is LiPF6 + diethylene carbonate (EC) + dimethyl carbonate (DMC). The casing of lithium-ion batteries is mostly made of aluminum, and the aluminum casing needs to have a certain explosion-proof capability to protect the battery.

[0004] The inventors of this application, through explosion experiments on the aluminum casing of lithium-ion batteries, discovered that the above-mentioned technology has at least the following technical problems:

[0005] The explosion-proof capability of the aluminum casing of lithium-ion batteries needs to be tested for explosion-proof performance and pressure resistance. To address these issues, we propose a lithium-ion battery aluminum casing explosion detection fixture. Utility Model Content

[0006] The main purpose of this utility model is to provide a tooling for detecting the bursting of aluminum shells of lithium-ion batteries, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A lithium-ion battery aluminum casing explosion detection fixture, comprising:

[0009] The supporting frame includes a top cover plate, two sets of side columns are arranged below the top cover plate, and a base is fixedly installed at the bottom of the side columns; and

[0010] The clamping structure includes an air pump located at the center of the upper top of the upper cover plate, a lower support rod located at the bottom of the air pump, and a pressure cap fixed to the bottom of the lower support rod by bolts. The pressure cap contacts the aluminum shell below to achieve the clamping action of the blasting tool.

[0011] Preferably, the upper end of the base is provided with a lower support column, the lower support column is a stepped disc structure, and a side pipe is provided below the lower support column.

[0012] Preferably, a lower mounting seat is provided in the middle of the lower support column. The lower mounting seat is a cylindrical groove, through which a round tube is installed and guided for installation. The round tube is fixedly installed in the middle of the lower support column by bolts.

[0013] Preferably, an upper connection port is provided above the top of the round tube, and a middle part of the upper connection port is provided. The upper end of the upper connection port is connected to the aluminum shell.

[0014] Preferably, a pipeline is provided at the lower center of the lower support column. The pipeline is connected to an external gas supply device. The gas from the external gas supply device is introduced into the circular pipe through the pipeline and then into the aluminum shell for sealing tests on the aluminum shell during explosion testing. A sealing ring is provided between the circular pipe and the lower mounting base, and sealing rings are also provided between the upper connection port and the aluminum shell to ensure the stability of the explosion test.

[0015] Preferably, guide sleeves are provided on both sides of the upper end of the upper cover plate. The guide sleeves are circular sleeve structures, with a limit rod slidably installed in the middle of the sleeve. A pressure cap is fixedly installed at the bottom of the limit rod. The movement of the pressure cap is guided by the sliding of the limit rod in the guide sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The cap is pressed tightly to the aluminum shell. The aluminum shell of the product is placed on the upper end of the upper connection port. There are sealing rings on both the top and bottom. The external air supply equipment is introduced into the round pipe through the pipeline and then into the aluminum shell. It is used to conduct a sealing test on the aluminum shell by the explosion test equipment. The air pressure will be transmitted from the bottom of the round pipe to the aluminum shell, thereby realizing the explosion test. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of a lithium-ion battery aluminum shell explosion detection tool according to the present invention;

[0019] Figure 2 This is a side sectional view of a lithium-ion battery aluminum shell explosion detection tool according to the present invention.

[0020] Figure 3 This is a top view of the lower fixing block in a lithium-ion battery aluminum shell explosion detection fixture of this utility model.

[0021] Figure 4 This is a side view of the anti-slip protrusion in a lithium-ion battery aluminum shell explosion detection tool according to the present invention.

[0022] In the diagram: 1. Top cover plate; 2. Side column; 3. Base; 4. Lower support column; 6. Side pipe; 7. Upper connection port; 8. Air pump; 9. Guide sleeve; 10. Lower support rod; 11. Pressure cap; 12. Pipeline; 13. Aluminum shell; 14. Lower mounting base; 15. Pipeline. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] Reference Figure 1-2 As shown, a lithium-ion battery aluminum casing explosion detection fixture includes...

[0026] The supporting frame includes an upper cover plate 1, two sets of side columns 2 are arranged below the upper cover plate 1, and a base 3 is fixedly installed at the bottom of the side columns 2; and

[0027] The clamping structure includes an air pump 8 located at the center of the upper end of the upper cover plate 1, and a lower support rod 10 located at the bottom of the air pump 8. Figure 3 As shown, a pressure cap 11 is fixedly installed at the bottom of the lower support rod 10 by bolts. The pressure cap 11 contacts the aluminum shell 13 below to achieve the clamping action of the blasting tool. Guide sleeves 9 are provided on both sides of the upper end of the upper cover plate 1. The guide sleeve 9 is a circular sleeve structure. A limit rod is slidably installed in the middle of the sleeve. The pressure cap 11 is fixedly installed at the bottom of the limit rod. The movement of the pressure cap 11 is guided by the sliding of the limit rod in the guide sleeve 9.

[0028] Example 2

[0029] Reference Figure 1-2 As shown, a lithium-ion battery aluminum casing explosion detection fixture includes:

[0030] The supporting frame includes an upper cover plate 1, two sets of side columns 2 are arranged below the upper cover plate 1, and a base 3 is fixedly installed at the bottom of the side columns 2; and

[0031] The clamping structure includes an air pump 8 located at the center of the upper end of the upper cover plate 1, and a lower support rod 10 located at the bottom of the air pump 8. Figure 3 As shown, a pressure cap 11 is bolted to the bottom of the lower support rod 10. The pressure cap 11 contacts the aluminum shell 13 below to achieve the clamping action of the blasting tool. Guide sleeves 9 are provided on both sides of the upper end of the upper cover plate 1. The guide sleeve 9 is a circular sleeve structure. A limit rod is slidably installed in the middle of the sleeve. The pressure cap 11 is fixedly installed at the bottom of the limit rod. The movement of the pressure cap 11 is guided by the sliding of the limit rod in the guide sleeve 9.

[0032] comprehensive Figure 4As shown, a lower support column 4 is provided at the upper end of the base 3. The lower support column 4 is a stepped disc structure. A side pipe 6 is provided below the lower support column 4. A lower mounting seat 14 is provided in the middle of the lower support column 4. The lower mounting seat 14 is a cylindrical groove. A round tube 12 is installed through the groove, which guides the installation of the round tube 12. The round tube 12 is fixedly installed in the middle of the lower support column 4 by bolts.

[0033] An upper connection port 7 is provided above the top of the circular tube 12, and a 16 is provided in the middle of the upper connection port 7. The upper end of the upper connection port 7 is connected to the aluminum shell 13 through the 16. A pipe 15 is provided in the middle of the lower support column 4. The pipe 15 is connected to an external gas supply device. The external gas supply device is introduced into the circular tube 12 through the pipe 15 and then into the aluminum shell 13 through the 16. This is used to conduct a sealing test on the aluminum shell 13 for the explosion test device. A sealing ring is provided between the circular tube 12 and the lower mounting base 14, and sealing rings are provided between the upper connection port 7 and the aluminum shell 13 to ensure the stability of the explosion test.

[0034] The working principle of this utility model is as follows:

[0035] The pressure cap 11 is pressed tightly to the aluminum shell 13. The aluminum shell 13 is placed on the upper end of the upper connection port 7. There are sealing rings on both the top and bottom. The external air supply equipment is introduced into the round pipe 12 through the pipe 15 and then into the aluminum shell 13 through 16. This is used to conduct a sealing test on the aluminum shell 13 for burst testing. The air pressure will be transferred from the bottom of the round pipe 12 to the aluminum shell 13, thereby realizing burst testing.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A tooling for detecting the bursting of an aluminum casing of a lithium-ion battery, characterized in that, include The supporting frame includes an upper cover plate (1), two sets of side columns (2) are provided below the upper cover plate (1), and a base (3) is fixedly installed at the bottom of the side columns (2); and The pressing structure has an air pump (8) in the middle of the upper end of the upper cover plate (1), and a lower support rod (10) at the bottom of the air pump (8). A pressure cover (11) is fixedly installed at the bottom of the lower support rod (10) by bolts, and the pressure cover (11) contacts the aluminum shell (13) below.

2. The lithium-ion battery aluminum shell explosion detection fixture according to claim 1, characterized in that: The base (3) is provided with a lower support column (4) at its upper end. The lower support column (4) is a stepped disc structure. A side pipe (6) is provided below the lower support column (4).

3. The lithium-ion battery aluminum shell explosion detection fixture according to claim 2, characterized in that: The lower support column (4) is provided with a lower mounting seat (14) in the middle. The lower mounting seat (14) is a cylindrical groove. A round tube (12) is installed by snapping it into the groove. The round tube (12) is guided for installation. The round tube (12) is fixedly installed in the middle of the lower support column (4) by bolts.

4. The lithium-ion battery aluminum shell explosion detection fixture according to claim 1, characterized in that: The upper cover plate (1) is provided with guide sleeves (9) on both sides of the upper end. The guide sleeve (9) is a circular sleeve structure. A limit rod is slidably installed in the middle of the sleeve, and a pressure cap (11) is fixedly installed at the bottom of the limit rod.

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