CN212539552U - Calibration tool of airtight tester for power battery - Google Patents
Calibration tool of airtight tester for power battery Download PDFInfo
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- CN212539552U CN212539552U CN202021499929.0U CN202021499929U CN212539552U CN 212539552 U CN212539552 U CN 212539552U CN 202021499929 U CN202021499929 U CN 202021499929U CN 212539552 U CN212539552 U CN 212539552U
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- power battery
- square box
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- air inlet
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Abstract
The utility model belongs to a power battery system, in particular to a calibration tool of a power battery airtightness tester, which comprises a sealed cube box, wherein each edge and apex angle of the cube box need to be welded firmly, one side surface of the cube box adopts bolt connection, and is specifically arranged into a three-layer structure of an overhaul flanging, a sealing strip and an upper cover plate, and is locked by a bolt; an air inlet is arranged on the surface, and a nut is arranged in the air inlet and used as an air tightness tester interface. The utility model discloses can effectual realization at the airtight tester of factory internal calibration, improve the reliability, shorten airtight tester calibration cycle.
Description
Technical Field
The utility model belongs to power battery system, concretely relates to calibration frock of airtight tester of power battery.
Background
Because the power battery system is internally and completely electrically connected, the national standard has high requirement on the waterproof grade of the battery pack and must reach the IP67 grade. Each battery pack must be tested for online hermeticity to replace the watertight rating requirement by an equal amount; considering that the air tightness tester is a precise instrument, the external calibration is very difficult to carry out frequently, and the internal sensor is easy to damage in the shipping process, so that the calibration accuracy cannot be ensured; meanwhile, the external calibration period is very long.
SUMMERY OF THE UTILITY MODEL
The utility model discloses do not solve above-mentioned problem, provide a calibration frock of airtight test of power battery, it can accomplish the calibration promptly at the production line, has shortened calibration cycle greatly. The specific technical scheme is as follows:
a calibration tool for a power battery airtightness tester comprises: the square box is characterized by comprising a sealed square box, wherein each edge and top corner of the square box need to be welded firmly, one side surface of the square box is connected by adopting a bolt, and the square box is specifically arranged into a three-layer structure of an overhaul flanging, a sealing strip and an upper cover plate and is locked by the bolt; an air inlet is arranged on the surface, and a nut is arranged in the air inlet and used as an air tightness tester interface.
Further, the welding seam of the square box can bear the air pressure of at least 50 KPa.
Furthermore, the size of the side face of the square box bolted connection is larger than other welding faces of the square box.
Further, the nut inside the air inlet is matched with the air outlet pipe bolt of the air tightness tester.
Further, during the use, with airtight tester outlet duct bolt access frock air inlet nut on, set up airtight tester and aerify atmospheric pressure, aerify time, steady voltage time and then carry out the leakage condition in the rated time.
The specific calibration method comprises the following steps: and (3) connecting an air outlet pipe bolt of the air tightness tester to an air inlet nut of the tool, setting the air tightness tester to inflate 5KPa for 30s, then stabilizing the pressure for 30s, stopping inflating and stabilizing the pressure to start testing, recording the leakage amount of the air pressure in 30s for 30s, continuously testing for 3 times, and taking an average value. The airtight tester is tested once before work every day, data are recorded, and the stability and the accuracy of the airtight tester can be judged through comparison of measured values at every time, so that the airtight tester is calibrated and monitored.
The utility model discloses beneficial effect: the air tightness tester is effectively calibrated in a factory; the reliability of the airtight tester monitored in a factory is effectively realized; the calibration period of the airtight tester is effectively shortened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
reference numerals:
1-cube box, 2-edge, 3-vertex angle, 4-maintenance flanging, 5-sealing strip, 6-upper cover plate, 7-bolt and 8-air inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a calibration tool for a power battery airtightness tester: the square box comprises a sealed square box 1, wherein each edge 2 and each vertex angle 3 of the square box need to be welded firmly, one side surface of the square box is connected by a bolt, and the square box is specifically provided with a three-layer structure of an overhaul flanging 4, a sealing strip 5 and an upper cover plate 6 and is locked by a bolt 7; an air inlet 8 is arranged on the surface, and a nut is arranged in the air inlet 8 and is used as an air tightness tester interface.
The specific calibration method comprises the following steps: and (3) connecting an air outlet pipe bolt of the air tightness tester to an air inlet nut of the tool, setting the air tightness tester to inflate 5KPa for 30s, then stabilizing the pressure for 30s, stopping inflating and stabilizing the pressure to start testing, recording the leakage amount of the air pressure in 30s for 30s, continuously testing for 3 times, and taking an average value. The airtight tester is tested once before work every day, data are recorded, and the stability and the accuracy of the airtight tester can be judged through comparison of measured values at every time, so that the airtight tester is calibrated and monitored.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a calibration frock of airtight tester of power battery which characterized in that: the square box is characterized by comprising a sealed square box, wherein each edge and top corner of the square box need to be welded firmly, one side surface of the square box is connected by adopting a bolt, and the square box is specifically arranged into a three-layer structure of an overhaul flanging, a sealing strip and an upper cover plate and is locked by the bolt; an air inlet is arranged on the surface, and a nut is arranged in the air inlet and is used as an air tightness tester interface.
2. The calibration tool of the airtight tester of power battery according to claim 1, characterized in that: the welding seam of the cube box can bear the air pressure of at least 50 KPa.
3. The calibration tool of the airtight tester of power battery according to claim 1, characterized in that: the size of the side face of the square box in bolted connection is larger than other welding faces of the square box.
4. The calibration tool of the airtight tester of power battery according to claim 1, characterized in that: and the nut inside the air inlet is matched with the air outlet pipe bolt of the air tightness tester.
5. The calibration tool of the airtight tester of power battery according to claim 1, characterized in that: the cube box is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499929.0U CN212539552U (en) | 2020-07-27 | 2020-07-27 | Calibration tool of airtight tester for power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499929.0U CN212539552U (en) | 2020-07-27 | 2020-07-27 | Calibration tool of airtight tester for power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212539552U true CN212539552U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021499929.0U Active CN212539552U (en) | 2020-07-27 | 2020-07-27 | Calibration tool of airtight tester for power battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN212539552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375872A (en) * | 2021-05-31 | 2021-09-10 | 贵州航天电子科技有限公司 | Rear cover air tightness detection device and use method thereof |
-
2020
- 2020-07-27 CN CN202021499929.0U patent/CN212539552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375872A (en) * | 2021-05-31 | 2021-09-10 | 贵州航天电子科技有限公司 | Rear cover air tightness detection device and use method thereof |
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