CN213209763U - Battery peripheral weld joint welding strength testing arrangement - Google Patents
Battery peripheral weld joint welding strength testing arrangement Download PDFInfo
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- CN213209763U CN213209763U CN202022084383.9U CN202022084383U CN213209763U CN 213209763 U CN213209763 U CN 213209763U CN 202022084383 U CN202022084383 U CN 202022084383U CN 213209763 U CN213209763 U CN 213209763U
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- battery
- welding strength
- air
- peripheral weld
- testing
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- 238000003466 welding Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 18
- 239000002912 waste gas Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000009194 climbing Effects 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a battery peripheral weld joint welding strength testing device, which comprises an air source, a detection mechanism for loading a battery and a vacuum extraction mechanism for vacuumizing the detection mechanism; the detection mechanism comprises a sealed bin, a jacking mechanism and a fixing mechanism, the jacking mechanism and the fixing mechanism are respectively arranged in the sealed bin and are connected with the two axial ends of the battery, the output end of an air source penetrates through the fixing mechanism to be communicated with the interior of the battery, the axial lines of the jacking mechanism and the fixing mechanism are overlapped, and the sum of the pressure intensity generated by the jacking mechanism and the fixing mechanism on the battery is greater than 1 MP; the device improves the test quality and accuracy of the welding strength of the peripheral weld joint of the battery.
Description
Technical Field
The utility model relates to a lithium cell welding strength test technical field especially relates to a peripheral welding seam welding strength testing arrangement of battery.
Background
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a peripheral welding seam welding strength testing arrangement of battery.
The utility model provides a battery circumferential weld welding strength testing device, which comprises an air source, a detection mechanism for loading a battery and a vacuum extraction mechanism for vacuumizing the detection mechanism; the detection mechanism comprises a sealed bin, a jacking mechanism and a fixing mechanism, the jacking mechanism and the fixing mechanism are respectively arranged in the sealed bin and connected with the two axial ends of the battery, and the output end of the air source penetrates through the fixing mechanism and is communicated with the inside of the battery.
Furthermore, the axes of the jacking mechanism and the fixing mechanism are overlapped, and the sum of the pressures generated by the jacking mechanism and the fixing mechanism on the battery is greater than 1 MP.
Furthermore, the fixing mechanism is provided with an air guide hole, one end of the air guide hole is communicated with an air source through a first air pipe, and the other end of the air guide hole is communicated with the inside of the battery.
Further, a first pressure gauge for detecting the internal pressure value of the battery is arranged outside the sealed bin; and an air inlet valve is arranged on the first air pipe.
Furthermore, the detection mechanism also comprises a limit block annularly arranged on the axial inner surface of the sealing bin, and an annular space formed by the limit block is in contact with the axial outer surface of the battery.
Further, the device also comprises a waste gas collecting mechanism, wherein the waste gas collecting mechanism is communicated with the sealed cabin through a second gas pipe;
the vacuum pumping mechanism comprises a vacuum pump, one end of the vacuum pump is communicated with the sealed bin through a second air pipe, and the other end of the vacuum pump is communicated with the waste gas collecting mechanism.
Further, a second pressure gauge for detecting the pressure value in the sealed bin is arranged outside the sealed bin; and an air outlet valve is arranged on the second air pipe.
The utility model provides a pair of peripheral welding seam welding strength testing arrangement of battery's advantage lies in: the device for testing the welding strength of the peripheral weld joint of the battery provided by the structure of the utility model improves the testing quality and accuracy of the welding strength of the peripheral weld joint of the battery; the sum of the pressure intensity generated by the jacking mechanism and the fixing mechanism on the battery is greater than the limit of 1MP, so that the air tightness between the interior of the battery and the sealed bin is ensured, and air leakage in the test process is prevented; the arrangement of the limiting block can be used for limiting the radial movement of the battery on one hand and guiding the radial movement of the battery on the other hand, so that the radial movement stability of the battery is improved; the waste gas collecting mechanism can carry out operations such as recovery, purification, recycling and the like on the waste gas extracted by the vacuum pump
Drawings
Fig. 1 is a schematic structural view of the present invention;
the device comprises a gas source 1, a detection mechanism 2, a vacuum extraction mechanism 3, a battery 4, a first gas pipe 5, a waste gas collection mechanism 6, a second gas pipe 7, a sealed bin 21, a jacking mechanism 22, a fixing mechanism 23, a gas guide hole 24, a first pressure gauge 25, an air inlet valve 26, a limiting block 27, a second pressure gauge 28, an air outlet valve 29 and a vacuum pump 31.
Detailed Description
The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.
As shown in fig. 1, the device for testing the welding strength of the peripheral weld of the battery provided by the present invention comprises an air source 1, a detection mechanism 2 for loading a battery 4, and a vacuum extraction mechanism 3 for vacuumizing the detection mechanism 2; the detection mechanism 2 comprises a sealed bin 21, a jacking mechanism 22 and a fixing mechanism 23, the jacking mechanism 22 and the fixing mechanism 23 are respectively arranged in the sealed bin 21 and connected with the two axial ends of the battery 4, and the output end of the air source 1 penetrates through the fixing mechanism 23 and is communicated with the inside of the battery 4.
Wherein, set up air guide hole 24 on the fixed establishment 23, air guide hole 24's one end is through first trachea 5 and air supply 1 intercommunication, the other end and the inside intercommunication of battery 4, the sealed storehouse 21 outside is provided with the first manometer 25 that is used for detecting the inside pressure value of battery 4.
The sealed cabin 21 is vacuumized through the vacuum pumping mechanism 3 to change the pressure difference between the inside and the outside of the sealed cabin 21, at the moment, whether the air pressure in the battery 4 is influenced or not is checked, if the air pressure is influenced, the battery 4 is directly abandoned, and if the air pressure is not influenced, gas is injected into the battery 4 through the air source 1 to obtain the welding strength of the peripheral welding seam of the battery 4. Accurate welding test of the peripheral welding seam of the battery is realized.
It should be noted that the vacuum extraction mechanism includes a vacuum pump 31, and one end of the vacuum pump 31 is communicated with the sealed cabin 21 through the second air pipe 7, and the other end is communicated with the exhaust gas collection mechanism 6. A second pressure gauge 28 for detecting the pressure value in the sealed bin 21 is arranged outside the sealed bin 21; an air outlet valve 29 is arranged on the second air pipe. The second pressure gauge 28 can accurately obtain the pressure value in the sealed bin 21, so that the working state of the vacuum pump 31 can be conveniently adjusted. The exhaust gas collection mechanism 6 may employ an existing exhaust gas treatment device to perform operations such as recovery, purification, recycling, and the like on the exhaust gas extracted by the vacuum pump 31.
In the present application, the gas provided by the gas source 1 includes at least one of helium, nitrogen, carbon dioxide, and compressed air, wherein helium is preferred from the viewpoint of measurement accuracy, and nitrogen is most preferred from the viewpoint of measurement accuracy and test cost.
In order to improve the fixing stability of the battery 4, the axes of the jacking mechanism 22 and the fixing mechanism 23 are overlapped, so that the pressure at the two ends of the battery 4 is uniform. The sum of the pressure generated by the jacking mechanism 22 and the fixing mechanism 23 on the battery 4 is greater than 1MP, and the pressure is limited, so that the air tightness between the interior of the battery 4 and the sealed cabin 21 is ensured, and air leakage in the test process is prevented.
The detection mechanism 2 further comprises a limit block 27 annularly arranged on the axial inner surface of the sealed bin 21, and an annular space formed by the limit block 27 is in contact with the axial outer surface of the battery 4. The limiting block 27 can be used for limiting the radial movement of the battery 4 in the battery 4 on one hand, and can be used for guiding the radial movement of the battery 4 on the other hand, so that the stability of the radial movement of the battery 4 is improved.
In order to change the communication state of the gas source 1 and the interior of the battery 4 so as to control the state that the gas in the gas source 1 enters the battery 4, an air inlet valve 26 is arranged on the first air pipe 5.
The working principle is as follows: placing the battery 4 in the sealed bin 21, communicating the interior of the battery 4 with the air vent 24, opening the air outlet valve 29 and the vacuum pump 31 to exhaust air in the sealed bin 21 (at this time, the pressure inside the battery is about one atmosphere), paying attention to the pressure change of the first pressure gauge 25 in the process of vacuumizing the sealed bin 21, if the pressure drops, indicating that the welding seam around the battery 4 leaks greatly, not needing to test the welding strength of the battery 4, and directly abandoning the battery 4; if the pressure is not changed, the sealed cabin 21 is sealed after vacuum is extracted by the vacuum extraction mechanism 3, the vacuum state is kept, and then the inside of the battery 4 is inflated by the air source 1. Until the peripheral welding seam of the battery 4 is broken and air leakage occurs, the maximum pressure value recorded by the first pressure gauge 25 is the welding strength (denoted as P) of the peripheral welding seam of the battery 4, and the welding strength is in accordance with the welding strength standard P of the peripheral welding seam of the cylindrical battery0The relationship is as follows: if P is larger than or equal to P0, the welding seam on the periphery of the battery cell of the battery 4 is well welded; b, if P < P0The welding of the peripheral welding line of the battery core of the battery 4 is poor; the accurate test of the welding strength of the peripheral welding seam of the battery is realized.
It should be understood that the fixing mechanism 23 may adopt an existing fixing block or the like, so as to fix the battery 4 as a preferable fixing mechanism; the jacking mechanism 22 also adopts the existing structure capable of realizing lifting; the battery 4 of this application can be cylinder battery, square battery etc to the cylinder battery is the test battery of the peripheral welding seam of comparatively ideal battery.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The device for testing the welding strength of the peripheral weld joint of the battery is characterized by comprising an air source (1), a detection mechanism (2) for loading the battery (4) and a vacuum extraction mechanism (3) for vacuumizing the detection mechanism (2);
detection mechanism (2) include sealed storehouse (21), climbing mechanism (22) and fixed establishment (23) set up respectively in sealed storehouse (21) and be connected with the axial both ends of battery (4), and the output of air supply (1) passes fixed establishment (23) and the inside intercommunication of battery (4).
2. The device for testing the welding strength of the peripheral weld of the battery according to claim 1, wherein the axes of the jacking mechanism (22) and the fixing mechanism (23) are coincident, and the sum of the pressures generated by the jacking mechanism (22) and the fixing mechanism (23) on the battery (4) is greater than 1 MP.
3. The device for testing the welding strength of the peripheral weld joint of the battery as claimed in claim 1, wherein the fixing mechanism (23) is provided with an air vent (24), one end of the air vent (24) is communicated with the air source (1) through the first air pipe (5), and the other end is communicated with the interior of the battery (4).
4. The device for testing the welding strength of the peripheral weld joint of the battery according to the claim 3, characterized in that a first pressure gauge (25) for detecting the internal pressure value of the battery (4) is arranged outside the sealed bin (21); an air inlet valve (26) is arranged on the first air pipe (5).
5. The device for testing the welding strength of the peripheral weld of the battery according to claim 1, wherein the detection mechanism (2) further comprises a limiting block (27) annularly arranged on the axial inner surface of the sealing bin (21), and an annular space formed by the limiting block (27) is in contact with the axial outer surface of the battery (4).
6. The device for testing the welding strength of the peripheral weld of the battery according to any one of claims 1 to 5, further comprising an exhaust gas collecting mechanism (6), wherein the exhaust gas collecting mechanism (6) is communicated with the sealed cabin (21) through a second gas pipe (7);
the vacuum pumping mechanism (3) comprises a vacuum pump (31), one end of the vacuum pump (31) is communicated with the sealed bin (21) through a second air pipe (7), and the other end of the vacuum pump is communicated with the waste gas collecting mechanism (6).
7. The device for testing the welding strength of the peripheral weld of the battery according to claim 6, wherein a second pressure gauge (28) for detecting the pressure value in the sealed cabin (21) is arranged outside the sealed cabin (21); an air outlet valve (29) is arranged on the second air pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022084383.9U CN213209763U (en) | 2020-09-21 | 2020-09-21 | Battery peripheral weld joint welding strength testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022084383.9U CN213209763U (en) | 2020-09-21 | 2020-09-21 | Battery peripheral weld joint welding strength testing arrangement |
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| Publication Number | Publication Date |
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| CN213209763U true CN213209763U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022084383.9U Active CN213209763U (en) | 2020-09-21 | 2020-09-21 | Battery peripheral weld joint welding strength testing arrangement |
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| CN (1) | CN213209763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670535A (en) * | 2021-08-23 | 2021-11-19 | 东莞塔菲尔新能源科技有限公司 | Pole welding quality detection method |
-
2020
- 2020-09-21 CN CN202022084383.9U patent/CN213209763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670535A (en) * | 2021-08-23 | 2021-11-19 | 东莞塔菲尔新能源科技有限公司 | Pole welding quality detection method |
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