Helium detection equipment for blade battery shell welding seam

Abstract

The utility model relates to the technical field of battery processing, in particular to blade battery shell welding seam helium detection equipment which comprises a main support and a detection mechanism which is arranged on the main support and can detect blade battery shell welding seams, and the detection mechanism comprises a sliding type shell tool, a sliding type vacuum groove and an air cylinder propelling assembly. According to the blade battery shell welding seam helium detection equipment, the structure is simplified, the weight is reduced, under the condition that higher precision is achieved, the number of parts is reduced, the tool cost is reduced, the high-pressure helium pressure maintaining function is achieved, helium waste is reduced, pollution to the detection environment is avoided, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery processing, in particular to a blade battery shell weld helium detection equipment. BACKGROUND

[0002] The existing blade battery shell is in a rectangular shape and is formed by welding, after the welding is completed, a helium mass spectrometer needs to be used for nondestructive testing of the weld to determine whether there are microstructure pores on the weld.

[0003] Old tooling uses a pressureless helium spraying form for detection, and free dispersion of helium molecules can cause uneven distribution and gradual deterioration of the test environment, which can cause the number of helium molecules passing through the micropore gap to be insufficient, and the detection value cannot reach the unqualified determination standard, resulting in missed judgment of the test result. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a blade battery shell weld helium detection equipment which is simple in structure, convenient to use, high in detection precision and capable of avoiding pollution of the detection environment.

[0005] To achieve the above-mentioned purpose, the utility model provides a blade battery shell weld helium detection equipment, which comprises a main support and a detection mechanism capable of detecting the weld of the blade battery shell and arranged on the main support, the detection mechanism comprises a sliding shell tooling, a sliding vacuum tank and a cylinder pushing assembly;

[0006] The sliding shell tooling is arranged at the top end of the main support and is used for positioning the blade battery shell, and comprises a first sliding rail and a tooling plate arranged on the first sliding rail, the first sliding rail is perpendicular to the horizontal plane, and the tooling plate is slidingly connected to the first sliding rail;

[0007] The sliding vacuum tank is arranged on the main support and corresponds to the tooling plate arranged below, is used for sealing the weld on the blade battery shell on the tooling plate and forming a vacuum helium environment, and comprises a second sliding rail and a vacuum tank body arranged on the second sliding rail, the second sliding rail is perpendicular to the horizontal plane, and the vacuum tank body is slidingly connected to the second sliding rail, and a plurality of through holes are formed at the top end of the vacuum tank body;

[0008] The cylinder pushing assembly is arranged at the bottom end of the main support and corresponds to the sliding vacuum tank arranged below, is used for driving the sliding vacuum tank to move up and down, and makes the vacuum tank body clamp and seal the weld of the blade battery shell, and comprises a group of lifting cylinders, and the lifting cylinders are connected with the vacuum tank body.

[0009] In order to improve the detection efficiency, the detection mechanism has two sets and is correspondingly arranged on both sides of the main support.

[0010] In order to facilitate the realization of the tool plate lifting, the first slide rail has a group, one end of the tool plate is respectively connected with the first slide rail through the first sliding block, and the other end of the tool plate extends horizontally away from the first slide rail.

[0011] In order to limit the bottom of the tool plate, the first slide rail is provided with a support block on one side, the support block is fixed on the main support, and the top end of the support block is fixed with a lower limiting rod capable of limiting the lowering of the tool plate.

[0012] In order to limit the top of the tool plate, the top end of the main support is fixed with an upper limiting block capable of limiting the rising of the tool plate.

[0013] In order to facilitate the installation and positioning of the blade battery shell on the tool plate, the tool plate is fixed with a positioning block capable of abutting and positioning one end of the blade battery shell.

[0014] In order to ensure the sealing during the test, the bottom end surface of the tool plate is fixed with an upper sealing ring, the top end surface of the vacuum groove body is fixed with a lower sealing ring, and the upper sealing ring and the lower sealing ring are respectively sleeved on the welding seam of the blade battery shell, so that the welding seam is in a sealed environment.

[0015] In order to facilitate the lifting of the vacuum groove body, the middle part of the vacuum groove body is connected with the second slide rail through the second sliding block.

[0016] The beneficial effects of the utility model are as follows: the blade battery shell welding seam helium detection equipment simplifies the structure and reduces the weight, reduces the number of parts in the case of higher precision, reduces the tooling cost, realizes the high-pressure helium pressure maintaining function, reduces helium waste, avoids pollution to the detection environment, and improves the accuracy of detection. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the blade battery shell welding seam helium detection equipment of the utility model;

[0018] Figure 2 It is a structure schematic diagram of the tool plate and the vacuum groove of the utility model;

[0019] Figure 3 It is a structure schematic diagram of the blade battery shell welding seam helium detection equipment in use. DETAILED DESCRIPTION

[0020] The preferred embodiments of the utility model are described in detail below with reference to the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is more clearly and explicitly defined.

[0021] As Figure 1 , Figure 2The illustrated one kind blade battery shell weld helium detection equipment, including main support 1 and set up on main support 1 can be to the detection mechanism of blade battery shell weld is detected, the detection mechanism has two sets, corresponding set up in main support 1 both sides, detection mechanism includes sliding type shell tooling, sliding type vacuum tank and cylinder propulsion assembly.

[0022] Specifically, the sliding type shell tooling is arranged at the top end of the main support 1 for positioning the blade battery shell, comprising a first sliding rail 4 and a tooling plate 2 arranged on the first sliding rail 4, the first sliding rail 4 has a group, the first sliding rail 4 is perpendicular to the horizontal plane, one end of the tooling plate 2 is respectively connected with the first sliding rail 4 through the first sliding block 5, the other end of the tooling plate 2 extends horizontally away from the first sliding rail 4, a support block 6 is arranged on one side of the first sliding rail 4, the support block 6 is fixed on the main support 1, a lower limit rod 7 capable of limiting the downward movement of the tooling plate 2 is fixed on the top end of the support block 6, a group of upper limit blocks 8 capable of limiting the upward movement of the tooling plate 2 are fixed on the top end of the main support 1, a positioning block 12 capable of abutting and positioning one end of the blade battery shell is fixed on the tooling plate 2;

[0023] Specifically, the sliding type vacuum tank is arranged on the main support 1 and corresponds to the tooling plate 2 below, for sealing the weld on the blade battery shell on the tooling plate 2 and forming a vacuum helium environment, comprising a second sliding rail 10 and a vacuum tank body 3 arranged on the second sliding rail 10, the second sliding rail 10 is perpendicular to the horizontal plane, the middle part of the vacuum tank body 3 is connected with the second sliding rail 10 through the second sliding block 9, the inside of the vacuum tank body 3 is a hollow structure, a plurality of through holes are formed on the top end of the vacuum tank body 3;

[0024] An upper sealing ring 13 is fixed on the bottom end surface of the tooling plate 2, a lower sealing ring 14 is fixed on the top end surface of the vacuum tank body 3, the upper sealing ring 13 and the lower sealing ring 14 are respectively sleeved on the weld of the blade battery shell, so that the weld is in a sealed environment;

[0025] The cylinder propulsion assembly is arranged at the bottom end of the main support 1 and corresponds to the sliding type vacuum tank below, for driving the sliding type vacuum tank to move up and down, so that the vacuum tank body 3 clamps and seals the weld of the blade battery shell, comprising a group of lifting cylinders 11, the top of the lifting cylinder 11 is connected with the vacuum tank body 3.

[0026] During detection, combined with Figure 3As shown, the two-blade battery shell 15 is sleeved on the two tooling plates 2 respectively, and the one end of the blade battery shell 15 abuts against the positioning block 12 to complete positioning; at this time, the two groups of lifting air cylinders 11 drive the two vacuum groove bodies 3 to rise, when the vacuum groove body 3 contacts the tooling plate 2, the two tooling plates 2 are driven to move upward by a distance, so that the vacuum groove body 3 and the tooling plate 2 clamp the blade battery shell 15, the weld surface of the blade battery shell 15 is clamped between the upper sealing ring 13 and the lower sealing ring 14 to complete the sealing of the weld surface; the vacuum pump is used to pump the vacuum groove body 3, the mass spectrometer is used to detect the concentration of helium molecules in the vacuum groove body 3 under the vacuum state, the value is a background value, the helium electromagnetic valve is opened, and pure helium is filled into the vacuum groove body 3 to act on the internal weld surface of the blade battery shell 15 with a certain pressure, and the pressure is maintained for a certain time; if the weld surface has microscopic holes and defects, the helium molecules will pass through the blade battery shell 15 and enter the mass spectrometer, and the value of the concentration of the helium molecules detected by the mass spectrometer rises; if the weld surface has no holes and defects, the value of the concentration of the helium molecules will remain consistent with the background value.

[0027] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle and application direction of the present application should be covered within the protection scope of the present application.

Claims

1. A kind of blade battery shell weld helium detection equipment, including main support and the detection mechanism of being arranged on main support can carry out detection to blade battery shell weld, it is characterized in that: The detection mechanism comprises a sliding shell tool, a sliding vacuum tank and a cylinder pushing assembly. The sliding shell tool is arranged at the top end of the main support and used for positioning the blade battery shell, and comprises a first sliding rail and a tool plate arranged on the first sliding rail. The sliding vacuum tank is arranged on the main support and correspondingly arranged below the tool plate, used for sealing the weld on the blade battery shell on the tool plate and forming a vacuum helium environment, and comprises a second sliding rail and a vacuum tank body arranged on the second sliding rail. The cylinder pushing assembly is arranged at the bottom end of the main support and correspondingly arranged below the sliding vacuum tank, used for driving the sliding vacuum tank to move up and down, so that the vacuum tank body clamps and seals the weld of the blade battery shell, and comprises a group of lifting cylinders connected with the vacuum tank body.

2. The blade cell case weld seam helium detection apparatus of claim 1, wherein: The detection mechanism has two sets and is correspondingly arranged on both sides of the main support.

3. The blade cell case weld seam helium detection apparatus of claim 1 or 2, wherein: The first sliding rail has a group, and one end of the tool plate is respectively connected with the first sliding rail through a first sliding block.

4. The blade cell case weld helium detection apparatus of claim 3, wherein: One side of the first sliding rail is provided with a supporting block fixed on the main support, and the top end of the supporting block is fixed with a lower limiting rod capable of limiting the downward movement of the tool plate.

5. The blade cell case weld seam helium detection apparatus of claim 3, wherein: The top end of the main support is fixed with an upper limiting block capable of limiting the upward movement of the tool plate.

6. The blade cell case weld seam helium detection apparatus of claim 1 or 2, wherein: The tool plate is fixed with a positioning block capable of abutting and positioning one end of the blade battery shell.

7. The blade cell case weld seam helium detection apparatus of claim 6, wherein: The bottom end surface of the tool plate is fixed with an upper sealing ring, and the top end surface of the vacuum tank body is fixed with a lower sealing ring.

8. The blade cell case weld seam helium detection apparatus of claim 7, wherein: The middle part of the vacuum tank body is connected with the second sliding rail through a second sliding block. The middle part of the vacuum tank body is connected with the second sliding rail through a second sliding block.

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