Blade battery shell air tightness detection tool

Abstract

The utility model discloses a tool for detecting air tightness of a blade battery shell, which belongs to the field of blade battery shell detection and comprises a shell detection base. A shell detection supporting seat is supported on the upper end face of the shell detection base, and a vacuum detection seat is assembled on the upper end face of the shell detection supporting seat; a vacuum chamber is formed in the vacuum detection seat, and a battery shell limiting assembly is assembled in the vacuum chamber. According to the tool for detecting the air tightness of the blade battery shell, the change of ion concentration can be monitored in real time through the arranged ion detection sensor so as to judge whether the blade battery shell leaks air or not, and compared with a traditional watertight method for detection, the tool can detect the air tightness of the blade battery shell through ionized gas; therefore, very small ion concentration change can be detected, and the specific position of air leakage can be accurately positioned; and the arranged battery shell limiting assembly can be adjusted according to blade battery shells with different sizes, so that the battery shells with different blades are matched for clamping.

Description

Technical Field

[0001] The utility model belongs to the field of blade battery housing detection, and particularly relates to an airtightness detection tooling for a blade battery housing. Background Art

[0002] The blade battery is a high-performance battery, usually used in electric vehicles and energy storage systems. To ensure the safety and performance of the blade battery, the airtightness of its housing is crucial. Airtightness detection refers to detecting the blade battery housing to ensure that no gas leakage or seepage occurs, thus ensuring the long-term stable operation of the battery.

[0003] Currently, most of the detection machines applied to the airtightness detection of blade batteries directly place the blade battery housing to be detected statically on the detection table for gas injection. During this period, the blade battery housing cannot be properly clamped, resulting in easy loosening or instability during the airtightness test, thus affecting the accuracy of the test results. At the same time, when the existing blade battery housing is subjected to airtightness detection, the water-tight method is mostly used to observe bubbles in the blade battery housing, that is, the air leakage of the blade battery housing is detected by using the generation between the water tank and the bubbles. However, it judges air leakage by observing the generation of bubbles. This method is more effective for large leakage points, but for small leakage points, due to the inaccurate position of the generated bubbles and the difficulty in observation, it is difficult to accurately locate the specific position of the air leakage, resulting in some key air leakage points being missed. Therefore, considering the airtightness detection effect of the battery housing, an airtightness detection tooling for a blade battery housing is proposed to solve the problem. Summary of the Utility Model

[0004] In view of one or more of the above defects or improvement requirements in the prior art, the utility model provides an airtightness detection tooling for a blade battery housing, which has the advantages of being able to detect blade batteries of different sizes, stable detection and higher accuracy.

[0005] To achieve the above object, the utility model provides an airtightness detection tooling for a blade battery housing, including a housing detection base; a housing detection vertical frame is vertically assembled on the housing detection base; a cylinder seat is installed on the side of the housing detection vertical frame, and a guide rod cylinder is installed on the cylinder seat; an argon injection device body is installed at the output end of the guide rod cylinder;

[0006] A housing detection support seat is supported on the upper end surface of the housing detection base, and a vacuum detection seat is assembled on the upper end surface of the housing detection support seat;

[0007] A vacuum chamber is formed in the vacuum detection seat, and a battery housing limiting component is assembled in the vacuum chamber of the vacuum detection seat;

[0008] A telescopic cylinder is installed obliquely on the side of the housing detection vertical frame, and an ion detection sensor is installed at the output end of the telescopic cylinder. The ion detection sensor extends into the vacuum detection seat;

[0009] The battery housing limiting assembly includes a limiting bottom plate arranged in the vacuum detection seat. Two linear guide rails are arranged in parallel on the upper end surface of the limiting bottom plate. Two slider seats are vertically slidably arranged between the two linear guide rails. The two slider seats are arranged in parallel and two vertical plates are vertically installed on their sides. A battery housing clamping plate is jointly installed on the sides of adjacent two vertical plates.

[0010] As a further improvement of the present invention, the battery housing limiting assembly further includes a groove seat arranged on the upper end surface of the limiting bottom plate. Two positioning plates are installed on the groove seat. A positive and negative thread screw is rotatably arranged between the two positioning plates. A reciprocating motor is installed on the side of one of the positioning plates. The output end of the reciprocating motor penetrates through the positioning plate and is connected to one end of the positive and negative thread screw.

[0011] As a further improvement of the present invention, two lead screw nuts are externally meshed with the positive and negative thread screw. The two lead screw nuts are respectively meshed with one of the thread lines on the positive and negative thread screw. Moving sliders are sleeved outside the two lead screw nuts. The bottoms of the two slider seats are respectively connected to one of the moving sliders.

[0012] As a further improvement of the present invention, a plurality of rotating shaft seats are installed on the upper end surface of the limiting bottom plate. The highest points of the rotating shaft seats are horizontally arranged with the slider seats.

[0013] As a further improvement of the present invention, a gas injection hole is formed on the upper end surface of the vacuum detection seat. A gas injection pipe is connected and installed at the bottom of the argon injection equipment body. An excitation electrode is assembled in the gas injection pipe.

[0014] Generally speaking, compared with the prior art by the above technical solutions conceived by the present invention, the beneficial effects include:

[0015] The airtightness detection tooling for the blade battery housing of the present utility model, in actual use, the argon injection device body can extract external argon and transmit it to the blade battery housing through the gas injection pipe. At this time, when the excitation electrode is energized, a high-frequency electric field is generated, causing the argon to ionize to form a plasma. When there is an air leakage in the blade battery housing, the argon concentration around the leakage part will change, thereby affecting the ion concentration of the plasma. At this time, the ion detection sensor can monitor the change of the ion concentration in real time to determine whether there is an air leakage in the blade battery housing. Compared with the traditional water-tight method detection, the tooling of this application ionizes the gas, so it can detect very small changes in ion concentration, and thus can very sensitively detect the air leakage point of the blade battery housing. Even a very small air leakage can be detected, and at the same time, the specific location of the air leakage can be accurately located.

[0016] The airtightness detection tooling for the blade battery housing of the present utility model, through the mutual movement and cooperation of multiple structures in the battery housing limiting component, in actual use, after the blade battery housing to be detected is placed on the battery housing limiting component, the battery housing limiting component can be used for stable clamping and placement. At the same time, the set battery housing limiting component can be adjusted according to the blade battery housing of different sizes, so as to match different blade battery housings for clamping. The whole has good versatility and adaptability, and is suitable for clamping and limiting of various models of blade battery housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall installation structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the connection structure between the argon injection device body and the excitation motor of the present utility model;

[0019] Figure 3 It is a schematic diagram of the installation structure of the battery housing limiting component of the present utility model.

[0020] In all the drawings, the same reference numerals represent the same technical features. Specifically: 1. Housing detection base; 2. Housing detection vertical frame; 3. Cylinder seat; 4. Guide rod cylinder; 5. Argon injection device body; 51. Gas injection pipe; 52. Excitation electrode; 6. Telescopic cylinder; 7. Ion detection sensor; 8. Housing detection support seat; 81. Vacuum detection seat; 9. Battery housing limiting component; 91. Limiting bottom plate; 92. Linear guide rail; 93. Slide block seat; 94. Vertical plate; 95. Battery housing clamping plate; 96. Groove seat; 97. Positioning plate; 98. Positive and negative thread screw rod; 99. Lead screw nut; 910. Moving slider; 911. Reciprocating motor; 912. Rotating shaft seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] Given by Figures 1-3 There is provided a hermeticity detection tooling for a blade battery housing, including a housing detection base 1; a housing detection vertical frame 2 is vertically assembled on the housing detection base 1; a cylinder seat 3 is installed on the side of the housing detection vertical frame 2, and a guide rod cylinder 4 is installed on the cylinder seat 3; an argon injection device body 5 is installed at the output end of the guide rod cylinder 4;

[0024] A housing detection support seat 8 is supported on the upper end surface of the housing detection base 1, and a vacuum detection seat 81 is assembled on the upper end surface of the housing detection support seat 8;

[0025] A vacuum chamber is formed in the vacuum detection seat 81, and a battery housing limiting component 9 is assembled in the vacuum chamber thereof;

[0026] A telescopic cylinder 6 is obliquely installed on the side of the housing detection vertical frame 2, an ion detection sensor 7 is installed at the output end of the telescopic cylinder 6, and the ion detection sensor 7 extends into the vacuum detection seat 81;

[0027] The battery housing limiting component 9 includes a limiting bottom plate 91 arranged in the vacuum detection seat 81. Two linear guide rails 92 are arranged in parallel on the upper end surface of the limiting bottom plate 91. Two slider seats 93 are vertically slidably arranged between the two linear guide rails 92; the two slider seats 93 are arranged in parallel, and two vertical plates 94 are vertically installed on their sides, and a battery housing clamping plate 95 is jointly installed on the sides of adjacent two vertical plates 94.

[0028] In this embodiment, in actual use, the provided argon injection device body 5 can extract external argon and transmit it to the blade battery housing through the gas injection pipe 51. At this time, when the excitation electrode 52 is energized, a high-frequency electric field is generated to ionize the argon to form a plasma. When there is a leakage in the blade battery housing, the argon concentration around the leakage part will change, thereby affecting the ion concentration of the plasma. At this time, the set ion detection sensor 7 can monitor the change of the ion concentration in real time to determine whether there is a leakage in the blade battery housing. Compared with the traditional water tightness detection method, the tooling of this application ionizes the gas, so that very small ion concentration changes can be detected. Therefore, the leakage points of the blade battery housing can be detected very sensitively, and even very small leaks can be found, and at the same time, the specific position of the leakage can be accurately located.

[0029] Further, through the mutual movement and cooperation of multiple structures within the battery housing limiting component 9, in actual use, after the blade battery housing to be detected is placed on the battery housing limiting component 9, the battery housing limiting component 9 can be used for stable clamping and placement. At the same time, the set battery housing limiting component 9 can be adjusted according to the blade battery housings of different sizes, so as to match and clamp different blade battery housings, and the overall has good versatility and adaptability, and is suitable for clamping and limiting of blade battery housings of multiple models.

[0030] It should be noted that, in actual use, the set ion detection sensor 7 is electrically connected to an external monitoring instrument. Thus, when the ion detection sensor 7 detects a gas leakage phenomenon, it can be transmitted to the external monitoring instrument for the user to observe and process. The set monitoring instrument can be used to receive the signal of the ion detection sensor 7, process and analyze the signal to judge whether there is a gas leakage phenomenon in the blade battery housing.

[0031] Further, the power connection mode between the set ion detection sensor 7 and the monitoring instrument is the prior art, and the control circuit can be realized by simple programming of those skilled in the art, which belongs to the common general knowledge in this field. Only its use is carried out without modification, so the control method and circuit connection will not be described in detail.

[0032] Specifically, referring to Figure 3 , the battery housing limiting component 9 further includes a groove seat 96 arranged on the upper end surface of the limiting bottom plate 91. Two positioning plates 97 are installed on the groove seat 96, and a left - right hand screw 98 is rotatably arranged between the two positioning plates 97; a reciprocating motor 911 is installed on the side surface of one of the positioning plates 97, and the output end of the reciprocating motor 911 penetrates through the positioning plate 97 and is connected to one end of the left - right hand screw 98.

[0033] In this embodiment, in actual use, the set reciprocating motor 911 can control the rotation of the left - right hand screw 98. By connecting a power supply to the reciprocating motor 911, the set reciprocating motor 911 can drive the left - right hand screw 98 to rotate at this time.

[0034] Specifically, referring to Figure 3 , two lead screw nuts 99 are externally meshed with the left - right hand screw 98, and the two lead screw nuts 99 are respectively meshed with one of the thread lines on the left - right hand screw 98; moving sliders 910 are sleeved outside the two lead screw nuts 99; the bottoms of the two slider seats 93 are respectively connected to one of the moving sliders 910.

[0035] In this embodiment, when the double-start lead screw 98 rotates, it is limited by the connection between the linear guide 92 and the slider seat 93, and the connection between the moving slider 910 and the lead screw nut 99, so that the lead screw nut 99 outside the double-start lead screw 98 can drive the moving slider 910 to move linearly along the stroke range of the lead screw nut 99.

[0036] Further, through the limitation of the double-start helical thread on the lead screw nut 99 and the connection between the slider seat 93 and the moving slider 910, finally, the two set slider seats 93 can perform an opposing clamping motion or a reverse separation motion. Through the connection between the slider seat 93 and the vertical plate 94, and in cooperation with the connection between the vertical plate 94 and the battery housing clamping plate 95, the two battery housing clamping plates 95 can perform an opposing clamping or a reverse separation.

[0037] Specifically, referring to Figure 3 , a plurality of rotating shaft seats 912 are installed on the upper end surface of the limit bottom plate 91, and the highest points of the rotating shaft seats 912 are horizontally arranged with the slider seat 93.

[0038] In this embodiment, the provided rotating shaft seats 912 can be used to cooperate with the slider seat 93 to carry the blade battery housing, thereby ensuring the stability of the battery housing during detection.

[0039] Specifically, referring to Figures 1-2 , a gas injection hole is formed on the upper end surface of the vacuum detection seat 81, and a gas injection pipe 51 is connected and installed at the bottom of the argon injection equipment body 5; an excitation electrode 52 is assembled in the gas injection pipe 51.

[0040] In this embodiment, in actual use, the provided vacuum detection seat 81 also has a sealing door for sealed connection, and the sealing door can be rotated and opened.

[0041] Further, when the blade battery is limited in the vacuum detection seat 81, at this time, the user can open the gas valve in the argon injection equipment body 5 and connect an argon gas cylinder to the outside of the argon injection equipment body 5, so that the argon injection equipment body 5 can extract argon and transmit it to the blade battery housing through the gas injection pipe 51.

[0042] Further, the user connects a power supply to the excitation electrode 52 to ionize the port of the gas injection pipe 51. The excitation electrode 52 generates a high-frequency electric field when energized, ionizing argon to form a plasma. When there is a gas leakage in the blade battery housing, the argon concentration around the gas leakage part will change, thereby affecting the ion concentration of the plasma. At this time, the provided ion detection sensor 7 can monitor the change of the ion concentration in real time to determine whether there is a gas leakage in the blade battery housing.

[0043] Furthermore, the set argon gas injection device is an existing mature device, and its power connection method and gas path control method are prior arts. Moreover, the control circuit can be realized by simple programming of those skilled in the art, which belongs to the common general knowledge in this field. Only its use is involved without modification, so the control method and circuit connection will not be described in detail.

[0044] The airtightness detection tooling for the blade battery housing of the present utility model:

[0045] First step: In actual use, when the user needs to detect the airtightness of the blade battery housing, first open the sealing door of the vacuum detection seat 81 to expose the internal vacuum chamber. Then place the battery housing to be detected on the battery housing limiting component 9 to complete the limitation of the blade battery housing by using the battery housing limiting component 9. After the battery housing limiting component 9 completes the limitation of the battery, close the sealing door of the vacuum detection seat 81 at this time, and connect the guide rod cylinder 4 to an external air source to drive the argon gas injection device body 5 to move downward until the gas injection pipe 51 on the argon gas injection device body 5 moves downward to block the gas injection hole on the vacuum detection seat 81, and at the same time make the gas injection pipe 51 enter the blade battery housing. Then the user can perform a vacuum pumping operation on the vacuum detection seat 81.

[0046] Second step: When the user adjusts the battery housing limiting component 9, connect the power supply to the reciprocating motor 911. At this time, the set reciprocating motor 911 can drive the left - hand and right - hand screw rod 98 to rotate. When the left - hand and right - hand screw rod 98 rotates, restricted by the connection limitation between the linear guide 92 and the slider seat 93, and the connection limitation between the moving slider 910 and the lead screw nut 99, the lead screw nut 99 outside the left - hand and right - hand screw rod 98 can drive the moving slider 910 to move linearly along the stroke range of the lead screw nut 99. Through the limitation of the left - hand and right - hand helical threads on the lead screw nut 99 and the connection between the slider seat 93 and the moving slider 910, finally the set two slider seats 93 can perform an opposing clamping movement or a reverse separating movement. The user places the blade battery housing to be detected on the upper end surfaces of the two slider seats 93 and several rotating shaft seats 912, and then drives the two slider seats 93 to move towards each other until the two battery housing clamping plates 95 outside the slider seats 93 clamp the blade battery housing. At this time, the battery housing limiting component 9 can be used to realize the clamping and limitation of the blade battery housing.

[0047] Step 3: After the blade battery is positioned in the vacuum detection seat 81, the user can then open the gas valve in the argon injection device body 5 and connect an external argon gas cylinder to the argon injection device body 5, so that the argon injection device body 5 can extract argon and transmit it through the gas injection pipe 51 into the blade battery housing. Subsequently, the user connects a power supply to the excitation electrode 52 to ionize the port of the gas injection pipe 51. When the excitation electrode 52 is energized, a high-frequency electric field is generated, causing the argon to ionize to form a plasma. When there is a gas leakage in the blade battery housing, the argon concentration around the leakage site will change, thereby affecting the ion concentration of the plasma. At this time, the ion detection sensor 7 can monitor the change in the ion concentration in real time.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtightness detection tooling for a blade battery housing, characterized in that ； It includes a housing detection base (1); a housing detection vertical frame (2) is vertically assembled on the housing detection base (1); a cylinder seat (3) is installed on the side of the housing detection vertical frame (2), and a guide rod cylinder (4) is installed on the cylinder seat (3); an argon injection device body (5) is installed at the output end of the guide rod cylinder (4). A housing detection support seat (8) is supported on the upper end surface of the housing detection base (1), and a vacuum detection seat (81) is assembled on the upper end surface of the housing detection support seat (8). A vacuum chamber is formed in the vacuum detection seat (81), and a battery housing limiting component (9) is assembled in the vacuum chamber thereof. A telescopic cylinder (6) is obliquely installed on the side of the housing detection vertical frame (2), an ion detection sensor (7) is installed at the output end of the telescopic cylinder (6), and the ion detection sensor (7) extends into the vacuum detection seat (81). The battery housing limiting component (9) includes a limiting bottom plate (91) arranged in the vacuum detection seat (81), two linear guide rails (92) are arranged in parallel on the upper end surface of the limiting bottom plate (91), and two slider seats (93) are vertically slidably arranged between the two linear guide rails (92); the two slider seats (93) are arranged in parallel, and two vertical plates (94) are vertically installed on the side surfaces thereof, and a battery housing clamping plate (95) is jointly installed on the side surfaces of two adjacent vertical plates (94).

2. The airtightness detection tooling for the blade battery housing according to claim 1, wherein The battery housing limiting component (9) further includes a groove seat (96) arranged on the upper end surface of the limiting bottom plate (91), two positioning plates (97) are installed on the groove seat (96), and a positive and negative thread lead screw (98) is rotatably arranged between the two positioning plates (97); a reciprocating motor (911) is installed on the side surface of one of the positioning plates (97), and the output end of the reciprocating motor (911) penetrates through the positioning plate (97) and is connected to one end of the positive and negative thread lead screw (98).

3. The airtightness detection tooling for the blade battery housing according to claim 2, wherein, Two lead screw nuts (99) are externally engaged with the positive and negative thread lead screw (98), and the two lead screw nuts (99) are respectively engaged with one of the thread lines on the positive and negative thread lead screw (98); moving sliders (910) are sleeved outside the two lead screw nuts (99); the bottoms of the two slider seats (93) are respectively connected to one of the moving sliders (910).

4. The airtightness detection tooling for the blade battery housing according to claim 1, characterized in that, A plurality of rotating shaft seats (912) are installed on the upper end surface of the limiting bottom plate (91), and the highest points of the rotating shaft seats (912) are horizontally arranged with the slider seats (93).

5. The airtightness detection tooling for the blade battery housing according to claim 1, wherein A gas injection hole is formed on the upper end surface of the vacuum detection seat (81), and a gas injection pipe (51) is connected and installed at the bottom of the argon injection device body (5); an excitation electrode (52) is assembled in the gas injection pipe (51).

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