Portable storage battery air tightness detection device

Abstract

The utility model relates to the technical field of storage battery air tightness detection, in particular to a portable storage battery air tightness detection device. The portable storage battery air tightness detection device comprises an air gun, the air gun is connected with a connector through a PU air pipe, a flow regulating valve is arranged below the air gun, an air pressure regulating meter is arranged above the air gun, and the air pressure regulating meter is located above the joint of the air gun and the PU air pipe. And a pressure regulating valve is arranged on the air pressure regulating meter and is used for regulating the pressure of air entering the PU air pipe. According to the device, the sealing performance can be detected in the production process after the storage battery is assembled, and the problem that the structure of the storage battery is easily damaged during air tightness detection due to the fact that the pressure of industrial compressed air is too large is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery airtightness detection, specifically to portable battery airtightness detection device. BACKGROUND

[0002] The sealing performance of the battery is a key inspection item in the battery factory inspection process, and the sealing performance of the battery is usually detected by using an online airtightness detection device during the battery assembly process: gas is filled into or extracted from the inside of the battery through the battery liquid injection port, and when the internal pressure of the battery stabilizes to a certain pressure value, the pressure value is maintained for a certain period of time, the pressure value is observed, and it is judged whether the sealing performance of the battery is qualified, and the device is usually installed in the battery assembly production line and cannot detect the sealing performance in the subsequent production process of the battery.

[0003] Compared with other specifications of fixed lead-acid batteries, due to the characteristics of the fixed acid-proof lead-acid battery product, the filling pressure is relatively small during sealing performance detection, generally 5kPa~15kPa, and the battery tank material is AS resin, the mechanical strength is lower than that of ABS resin used in valve-regulated lead-acid battery tank, and the industrial compressed air pressure is relatively large, usually 0.6MPa~0.8MPa, and the conventional sealing performance detection equipment is easy to cause the separation of the sealing part of the battery tank cover, and even cause the rupture of the battery tank. SUMMARY

[0004] In view of the above problems in the prior art, the utility model aims to provide a portable battery airtightness detection device, which can detect the sealing performance in the production process after the battery assembly, and can prevent the battery structure from being damaged due to the excessive industrial compressed air pressure during airtightness detection.

[0005] The utility model is implemented by adopting the following technical scheme:

[0006] The portable battery airtightness detection device comprises a gas gun, the gas gun is connected with a connecting head through a PU air pipe, a flow regulating valve is arranged below the gas gun, an air pressure regulating gauge is arranged above the gas gun, and the air pressure regulating gauge is arranged above the connection between the gas gun and the PU air pipe.

[0007] The air pressure regulating gauge is provided with a pressure regulating valve, and the pressure regulating valve is used for adjusting the pressure of the gas entering the PU air pipe.

[0008] A one-way valve is arranged below the gas gun, and the connection between the one-way valve and the gas gun is located on one side of the flow regulating valve.

[0009] A sealing gasket is arranged below the connecting head, and a buckle is arranged below the sealing gasket.

[0010] The connecting head is connected with the single-liquid-injection-port battery through a buckle, and the buckle is used in cooperation with the battery liquid injection port on the single-liquid-injection-port battery.

[0011] The connecting head is connected with the multi-liquid-injection-port battery through a buckle, and a sealing plug is arranged on other liquid injection ports of the multi-liquid-injection-port battery.

[0012] The air gun is provided with a flow regulating valve for regulating the flow of compressed air to prevent the flow of the filled gas from being too large; the air pressure regulating gauge is installed on the air gun and is provided with a pressure regulating valve for adjusting the air pressure in the inner cavity of the battery to prevent the air pressure from being too large to cause the battery tank to be broken or the sealing structure to be damaged; the connecting head is internally provided with a through hole for the flow of compressed air and is provided with a sealing gasket for sealing the connecting position with the battery cover and is provided with a bayonet for clamping the liquid injection port of the battery cover; and the PU air pipe is used for connecting the connecting head and the one-way valve with the air gun.

[0013] The working principle of the utility model is as follows:

[0014] The connecting head is clamped with the battery liquid injection port, the thickness of the sealing gasket is appropriately selected, the clamped position is ensured to be air-tight, the portable battery air-tightness detection tool is connected with compressed air, the compressed air enters the air gun through the 5-way valve, the air gun handle is pressed to fill the compressed air into the inner cavity of the battery, the flow regulating valve is used to adjust the flow of the filled compressed air according to the different sizes of the inner cavity space of different models of batteries, the reading of the air pressure regulating gauge is observed, the air filling is stopped when the required pressure value is reached, the pressure regulating valve is used to adjust the air pressure in the battery cavity and keep the pressure stable, the air pressure value change is observed after the pressure maintaining time is reached, whether the sealing performance is qualified is judged, then the connecting head is unscrewed, the sealing performance detection of the battery is finished, the above operation is repeated, and the sealing performance of other batteries is detected.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] (1) the one-way valve used in the utility model is beneficial to ensuring that the air pressure in the battery is stable;

[0017] (2) the flow regulating valve used in the utility model can be used to adjust the flow according to the different sizes of the inner cavity space of different models of batteries, the air pressure in the battery is ensured to be steadily increased to a required value, and especially the low pressure value (5kPa~15kPa) requirement of the fixed type acid-proof lead-acid battery sealing performance detection is met;

[0018] (3) the air pressure regulating gauge used in the utility model can be used to adjust the air pressure in the battery after stopping the air filling, the air pressure value meets the detection requirement, and the utility model has high practicability.

[0019] (4) The utility model discloses a connector, with the structure of the battery liquid injection port is matched, adopts the clamping structure, and the mode is simple, convenient operation, improves work efficiency.

[0020] (5) The utility model discloses a sealing gasket, thickness can be adjusted, can guarantee the complete sealing of the connector and the battery, will not influence the air tightness detection result.

[0021] (6) The utility model discloses simple structure, convenient to test, has great application popularization value. DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of portable battery air tightness detection device of the utility model;

[0023] Figure 2 It is the structure schematic diagram of detecting single liquid injection port battery of the utility model;

[0024] Figure 3 It is the structure schematic diagram of detecting multiple liquid injection port battery of the utility model;

[0025] In the drawing: 1, air gun;2, air pressure pressure gauge;3, PU air pipe;4, connector;5, check valve;6, flow regulating valve;7, pressure regulating valve;8, sealing gasket;9, buckle;10, single liquid injection port battery;11, battery liquid injection port;12, sealing plug;13, multiple liquid injection port battery. SPECIFIC IMPLEMENTATION

[0026] In order to make the utility model purposes, technical schemes more clearly, in the following, to the utility model, make further detailed description with the drawing.

[0027] Example 1

[0028] As Figure 1 The utility model discloses a portable battery air tightness detection device, including air gun 1, air gun 1 is connected with connector 4 through PU air pipe 3, and air gun 1 below is equipped with flow regulating valve 6, and air gun 1 above is equipped with air pressure pressure gauge 2, and air pressure pressure gauge 2 is located above the junction of air gun 1 and PU air pipe 3. Air pressure pressure gauge 2 is equipped with pressure regulating valve 7, and pressure regulating valve 7 is used for adjusting the pressure of gas into PU air pipe 3. The lower side of air gun 1 is equipped with check valve 5, and the junction of check valve 5 and air gun 1 is located on the side of flow regulating valve 6. The lower side of connector 4 is equipped with sealing gasket 8, and the lower side of sealing gasket 8 is equipped with buckle 9.

[0029] Example 2

[0030] Compared with example 1, further include: as Figure 2As shown, the connector 4 is connected to the battery liquid injection port 11; the air gun 1 is connected to compressed air, and the compressed air enters the air gun 1 through the one-way valve 5; the air gun 1 is pressed to fill the compressed air into the battery cavity, and the flow of the compressed air is adjusted by the flow regulating valve 6; the air pressure gauge 2 is observed, and when the pressure value reaches 5kPa, the air filling is stopped, the pressure in the battery cavity is adjusted by the pressure regulating valve 7, and the pressure is kept stable at 5kPa; the pressure value is kept unchanged for 5s, the change of the pressure value is observed, the sealing performance is judged, then the connector 4 is unscrewed, and the sealing performance detection of the single liquid injection port battery 10 is finished, the above operation is repeated, and the sealing performance of other batteries is detected.

[0031] Example 3

[0032] Compared with example 1, it further comprises: As shown, the connector 4 is connected to the battery liquid injection port 11; the air gun 1 is connected to compressed air, and the compressed air enters the air gun 1 through the one-way valve 5; the air gun 1 is pressed to fill the compressed air into the battery cavity, and the flow of the compressed air is adjusted by the flow regulating valve 6; the air pressure gauge 2 is observed, and when the pressure value reaches 5kPa, the air filling is stopped, the pressure in the battery cavity is adjusted by the pressure regulating valve 7, and the pressure is kept stable at 5kPa; the pressure value is kept unchanged for 5s, the change of the pressure value is observed, the sealing performance is judged, then the connector 4 is unscrewed, and the sealing performance detection of the single liquid injection port battery 10 is finished, the above operation is repeated, and the sealing performance of other batteries is detected. Figure 3 As shown, the connector 4 is connected to the battery liquid injection port 11; the air gun 1 is connected to compressed air, and the compressed air enters the air gun 1 through the one-way valve 5; the air gun 1 is pressed to fill the compressed air into the battery cavity, and the flow of the compressed air is adjusted by the flow regulating valve 6; the air pressure gauge 2 is observed, and when the pressure value reaches 5kPa, the air filling is stopped, the pressure in the battery cavity is adjusted by the pressure regulating valve 7, and the pressure is kept stable at 5kPa; the pressure value is kept unchanged for 5s, the change of the pressure value is observed, the sealing performance is judged, then the connector 4 is unscrewed, and the sealing performance detection of the single liquid injection port battery 10 is finished, the above operation is repeated, and the sealing performance of other batteries is detected.

Claims

1. A portable battery gas tightness testing device, characterized by, Including air gun (1), air gun (1) is connected with connecting head (4) through PU air pipe (3), air gun (1) below is equipped with flow regulating valve (6), air gun (1) top is equipped with air pressure regulating gauge (2), air pressure regulating gauge (2) and the connection of air gun (1) and PU air pipe (3) top; The air pressure regulating gauge (2) is provided with a pressure regulating valve (7), and the pressure regulating valve (7) is used for adjusting the pressure of the gas entering the PU air pipe (3). The air gun (1) is provided with a one-way valve (5) below, and the connection of the one-way valve (5) and the air gun (1) is located on one side of the flow regulating valve (6).

2. The portable battery gas tightness testing device of claim 1, wherein, The connecting head (4) is provided with a sealing gasket (8) below, and the sealing gasket (8) is provided with a buckle (9) below.

3. The portable battery gas tightness testing device of claim 2, wherein, The connecting head (4) is connected with a single liquid injection port battery (10) through the buckle (9), and the buckle (9) is used in cooperation with the battery liquid injection port (11) on the single liquid injection port battery (10).

4. The portable battery gas tightness testing device of claim 2, wherein, The multiple liquid injection port battery (13) is provided with a plurality of liquid injection ports, the connecting head (4) is connected with one liquid injection port of the multiple liquid injection port battery (13) through the buckle (9), and the other liquid injection ports of the multiple liquid injection port battery (13) are provided with sealing plugs (12).

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