Water detection device and water detection system

Abstract

The utility model relates to the technical field of battery air tightness detection, in particular to a water detection device and a water detection system, the water detection device comprises a bottom plate, a first positioning plate, a second positioning plate and a fastener, the first positioning plate and the second positioning plate are oppositely arranged on the bottom plate, and a battery is clamped between the first positioning plate and the second positioning plate. A vent hole is formed in the first positioning plate in a penetrating mode, a first end plate, provided with a liquid injection hole, of the battery abuts against the first positioning plate, the vent hole is communicated with the liquid injection hole, a fastening threaded hole is formed in the second positioning plate in a penetrating mode, the fastener is in threaded connection with the fastening threaded hole, one end of the fastener abuts against a second end plate of the battery, and the second end plate and the first end plate are oppositely arranged. The water detection system comprises inflation equipment, an air pipe, a water tank and the water detection device, the air pipe is used for communicating the vent hole with the air outlet of the inflation equipment, the battery and the water detection device are both immersed in the water tank, and the water tank is filled with water. The water detection system can reduce manpower consumption.

Description

Technical Field

[0001] This utility model relates to the field of battery airtightness testing technology, and in particular to a water testing device and water testing system. Background Technology

[0002] Poor battery sealing can lead to leakage, allowing external liquids, gases, or impurities to seep in, causing extreme situations such as short circuits, overheating, or even fires, severely impacting battery life and safety. Common battery sealing testing methods include water testing, pressure decay testing, and vacuum chamber helium leak detection. The water testing method has an accuracy of 1E-3, the pressure decay method 1E-2, and the vacuum chamber helium leak detection method 1E-8. However, in the early stages of helium testing equipment development, due to insufficient debugging, there was a certain probability of missed and over-detection, significantly affecting testing efficiency. In such cases, water testing is needed to calibrate the helium testing equipment. First, batteries that are OK or NG from the helium test are selected, and then subjected to water testing to further confirm their condition. These are then used as limit components, and limit component testing is performed at the start of each shift to confirm the reliability of the helium testing equipment. Furthermore, for batteries confirmed to be leaking by helium testing, the leak point cannot be pinpointed. In these cases, water testing is used to check and confirm the leak location, facilitating adjustments to the manufacturing equipment.

[0003] The existing water detection method requires manual pressing of the battery for positioning, which is cumbersome and labor-intensive, requires a high level of skill from the operator, and is not conducive to operation. It requires two or more people to operate at the same time, which is a waste of manpower. Utility Model Content

[0004] One objective of this invention is to provide a water testing device that can reduce manpower consumption.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water testing device is provided, comprising a base plate, a first positioning plate, a second positioning plate, and fasteners. The first positioning plate and the second positioning plate are disposed opposite to each other on the base plate. A battery is sandwiched between the first positioning plate and the second positioning plate. A vent hole is provided through the first positioning plate. A first end plate of the battery with an injection hole abuts against the first positioning plate. The vent hole communicates with the injection hole. A fastening threaded hole is provided through the second positioning plate. The fastener is screwed into the fastening threaded hole, and one end abuts against the second end plate of the battery. The second end plate is disposed opposite to the first end plate.

[0007] Optionally, it also includes a sealing ring, which is sandwiched between the first end plate and the first positioning plate, and the sealing ring is used to ensure the sealing of the connection between the vent hole and the injection hole.

[0008] Optionally, a limiting groove is formed on the end face of the first positioning plate facing the second positioning plate, the limiting groove is formed around the vent hole, and the sealing ring is at least partially located in the limiting groove.

[0009] Optionally, a first positioning groove is formed on the end face of the first positioning plate facing the second positioning plate, the vent is formed at the bottom of the first positioning groove, and the side wall of the first positioning groove is attached to the side wall of the battery.

[0010] And / or, a second positioning groove is provided on the end face of the second positioning plate facing the first positioning plate, the fastening threaded hole is provided at the bottom of the second positioning groove, and the side wall of the second positioning groove is in contact with the side wall of the battery.

[0011] And / or, a third positioning groove is provided on the end face of the first positioning plate facing the second positioning plate, and the side wall of the third positioning groove is attached to the side wall of the pole on the first end plate.

[0012] Optionally, the sidewall of the first positioning groove extends through the plate in a direction perpendicular to the bottom plate and away from the bottom plate;

[0013] And / or, the sidewall of the second positioning groove extends through the plate in a direction perpendicular to the bottom plate and away from the bottom plate;

[0014] And / or, the sidewall of the third positioning groove extends through the plate in a direction perpendicular to the surface of the base plate and away from the base plate.

[0015] Optionally, the sidewall of the first positioning groove and the wall surface of the first positioning plate opposite to the bottom plate are curved transitions.

[0016] And / or, the sidewall of the second positioning groove has a curved transition with the wall surface of the second positioning plate opposite to the bottom plate;

[0017] And / or, the sidewall of the third positioning groove has a curved transition with the wall surface of the first positioning plate opposite to the bottom plate.

[0018] Optionally, the first positioning plate is detachably connected to the base plate, and / or the second positioning plate is detachably connected to the base plate.

[0019] Optionally, it also includes at least four bolts. The first positioning plate has at least two first stepped holes in a direction perpendicular to the base plate. The stepped surfaces of the first stepped holes face away from the base plate. At least two bolts pass through the first stepped holes and are screwed to the base plate. The second positioning plate has at least two second stepped holes in a direction perpendicular to the base plate. The stepped surfaces of the second stepped holes face away from the base plate. At least two bolts pass through the second stepped holes and are screwed to the base plate.

[0020] Optionally, the base plate is made of aluminum alloy, and / or the first positioning plate is made of aluminum alloy, and / or the second positioning plate is made of aluminum alloy.

[0021] Another objective of this invention is to provide a water testing system that can reduce manpower consumption.

[0022] To achieve this objective, the present invention adopts the following technical solution:

[0023] A water detection system is provided, including an inflation device, an air pipe, a water tank, and the aforementioned water detection device. The air pipe is used to connect the air vent to the air outlet of the inflation device. The battery and the water detection device are both immersed in the water tank, which contains water.

[0024] The beneficial effects of this utility model are:

[0025] This utility model provides a water testing device, including a base plate, a first positioning plate, a second positioning plate, and fasteners. The first and second positioning plates are disposed opposite each other on the base plate, and a battery is sandwiched between the first and second positioning plates. A vent hole is formed through the first positioning plate. A first end plate of the battery with an injection hole abuts against the first positioning plate, and the vent hole communicates with the injection hole. A fastening threaded hole is formed through the second positioning plate, and the fastener is screwed into the fastening threaded hole, with one end abutting against the second end plate of the battery. The second end plate is disposed opposite to the first end plate. By rotating the fasteners, the battery is pressed firmly between the first and second positioning plates, ensuring that the battery does not move during testing. The vent hole remains in constant communication with the battery's injection hole, thus ensuring testing accuracy. It is evident that by using this water testing device, operators no longer need to manually press the battery, saving manpower.

[0026] This utility model also provides a water testing system, including an inflation device, an air pipe, a water tank, and the aforementioned water testing device. The air pipe connects the vent to the air outlet of the inflation device. Both the battery and the water testing device are immersed in the water tank, which contains water. This water testing system can reduce manpower consumption. Attached Figure Description

[0027] Figure 1 This is a partial structural schematic diagram of the water testing device provided in this embodiment of the utility model from a first-view perspective;

[0028] Figure 2 This is a partial structural schematic diagram of the water testing device provided in an embodiment of the present invention from a second perspective.

[0029] In the picture:

[0030] 1. Base plate;

[0031] 2. First positioning plate; 21. Vent hole; 22. Limiting groove; 23. First positioning groove; 24. Third positioning groove; 25. First position; 26. Third position; 27. First step hole;

[0032] 3. Second positioning plate; 31. Fastening threaded hole; 32. Second positioning groove; 33. Second position; 34. Second step hole. Detailed Implementation

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the drawings, not all of them.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] like Figures 1-2As shown, the water testing device of this embodiment includes a base plate 1, a first positioning plate 2, a second positioning plate 3, and fasteners (not shown in the figure). The first positioning plate 2 and the second positioning plate 3 are disposed opposite to each other on the base plate 1. The battery is sandwiched between the first positioning plate 2 and the second positioning plate 3. A vent hole 21 is provided through the first positioning plate 2. The first end plate of the battery with an injection hole abuts against the first positioning plate 2. The vent hole 21 communicates with the injection hole. A fastening threaded hole 31 is provided through the second positioning plate 3. The fastener is screwed into the fastening threaded hole 31, and one end abuts against the second end plate of the battery. The second end plate is disposed opposite to the first end plate.

[0037] By rotating the fasteners to press the battery firmly between the first positioning plate 2 and the second positioning plate 3, it is ensured that the battery will not move during the test. The vent 21 remains connected to the battery's electrolyte filling hole, thus guaranteeing test accuracy. It is evident that by using this water testing device, operators no longer need to manually press the battery, saving manpower and reducing testing costs.

[0038] Optionally, the fastener is a fastening bolt, and an elastic material, such as rubber, can be provided on the end face of the fastening bolt to prevent damage to the second end plate when the end face presses against it.

[0039] To further improve detection accuracy and prevent air leakage at the junction of the vent hole 21 and the injection hole, the water detection device may optionally include a sealing ring (not shown in the figure), which is sandwiched between the first end plate and the first positioning plate 2. The sealing ring is used to ensure the sealing of the junction between the vent hole 21 and the injection hole.

[0040] Optionally, a limiting groove 22 is formed on the end face of the first positioning plate 2 facing the second positioning plate 3. The limiting groove 22 surrounds the vent hole 21, that is, the cross-sectional dimension of the limiting groove 22 is larger than the cross-sectional dimension of the vent hole 21. The sealing ring is at least partially located within the limiting groove 22 to prevent the sealing ring from shifting. Optionally, the sealing ring is interference-fitted with the side wall of the limiting groove 22 to further fix the sealing ring and prevent the sealing ring from detaching from the limiting groove 22.

[0041] Optionally, in this embodiment, the sealing ring, vent hole 21, and injection hole are coaxially arranged, and the cross-sectional diameter of the sealing ring is larger than the diameter of the opening end of the vent hole 21 facing the battery, and the cross-sectional diameter of the sealing ring is also larger than the diameter of the opening end of the injection hole facing the outside of the battery, so as to ensure the sealing effect of the sealing ring. Of course, in other embodiments, the two ends of the sealing ring can be inserted into the vent hole 21 and the injection hole respectively, and the sealing ring is interference-fitted with both holes, which can also achieve a good sealing effect.

[0042] To facilitate the positioning of the battery and the first positioning plate 2, optionally, a first positioning groove 23 is formed on the end face of the first positioning plate 2 facing the second positioning plate 3, and a vent 21 is formed at the bottom of the first positioning groove 23. The side wall of the first positioning groove 23 fits against the side wall of the battery, thus limiting the battery's position. When the first positioning plate 2 is placed vertically, the bottom side wall of the first positioning groove 23 can also support the battery, and the side walls on both sides of the first positioning groove 23 can restrict the battery from moving to the sides.

[0043] Optionally, the sidewall of the first positioning groove 23 extends through the plate surface of the base plate 1 and away from the base plate 1, so as to facilitate placing the battery into the first positioning groove 23.

[0044] Optionally, the sidewall of the first positioning groove 23 and the wall surface of the first positioning plate 2 facing away from the bottom plate 1 are curved transitions, i.e. Figure 1 The first position 25 is set as a curved transition to prevent sharp edges from scratching the battery.

[0045] Optionally, a second positioning groove 32 is formed on the end face of the second positioning plate 3 facing the first positioning plate 2, and a fastening threaded hole 31 is formed at the bottom of the second positioning groove 32. The side wall of the second positioning groove 32 fits against the side wall of the battery, thereby limiting the battery's position. When the second positioning plate 3 is placed vertically, the bottom side wall of the second positioning groove 32 can also support this end of the second end plate of the battery, and the side walls on both sides of the second positioning groove 32 can restrict the battery from moving to the sides.

[0046] Optionally, the sidewall of the second positioning groove 32 extends through the plate surface of the base plate 1 and away from the base plate 1, so as to facilitate the placement of the second end plate of the battery into the second positioning groove 32.

[0047] Optionally, the sidewall of the second positioning groove 32 and the wall surface of the second positioning plate 3 facing away from the bottom plate 1 are curved transitions, i.e. Figure 1 The second position 33 is set as a curved transition to prevent sharp edges from scratching the battery.

[0048] Optionally, when the battery is cylindrical, both the first positioning groove 23 and the second positioning groove 32 are U-shaped grooves with their openings facing away from the base plate 1. In other embodiments, when the battery is square, both the first positioning groove 23 and the second positioning groove 32 can be square grooves with an opening on one side, also facing away from the base plate 1. Optionally, the sidewalls of the first positioning groove 23 and the second positioning groove 32 are conformally shaped to the sidewalls of the battery to provide maximum balanced support for the battery.

[0049] Optionally, a third positioning groove 24 is provided on the end face of the first positioning plate 2 facing the second positioning plate 3. The side wall of the third positioning groove 24 is attached to the side wall of the electrode post on the first end plate, thereby limiting the position of the electrode post to restrict the battery. When the first positioning plate 2 is placed vertically, the bottom side wall of the third positioning groove 24 can also support the electrode post, and the side walls on both sides of the third positioning groove 24 can restrict the electrode post from moving to the sides.

[0050] Optionally, the sidewall of the third positioning groove 24 extends through the plate surface perpendicular to the base plate 1 and away from the base plate 1, so as to facilitate the placement of the battery terminal into the third positioning groove 24.

[0051] Optionally, the sidewall of the third positioning groove 24 and the wall surface of the first positioning plate 2 facing away from the bottom plate 1 are curved to form a transition surface. Figure 1 The third position, 26, is set with a curved transition to prevent sharp edges from scratching the battery terminals.

[0052] Optionally, when the electrode post is cylindrical, the third positioning groove 24 is a U-shaped groove with its opening facing away from the base plate 1. The battery can be rotated so that the battery's filling hole aligns with the vent hole 21. When the cross-section of the electrode post is racetrack-shaped, the third positioning groove 24 remains a U-shaped groove, and when the first positioning plate 2 is placed vertically, the side walls on both sides of the third positioning groove 24 can guide the electrode post. Through the cooperation of the first positioning groove 23 and the third positioning groove 24, after the battery is placed, the filling hole automatically connects with the vent hole 21, which can further improve the detection efficiency.

[0053] Optionally, the side wall portion of the third positioning groove 24 is conformally arranged to the side wall of the pole post to provide balanced support to the pole post to the greatest extent.

[0054] Optionally, the first positioning plate 2 is detachably connected to the base plate 1, and optionally, the second positioning plate 3 is detachably connected to the base plate 1. That is, by replacing different first positioning plates 2 and second positioning plates 3, batteries of different shapes and sizes can be accommodated.

[0055] Optionally, the water testing device further includes at least four bolts. The first positioning plate 2 has at least two first stepped holes 27 in a direction perpendicular to the base plate 1. The stepped surfaces of the first stepped holes 27 face away from the base plate 1. At least two bolts pass through the first stepped holes 27 and are screwed to the base plate 1 to achieve a detachable connection between the first positioning plate 2 and the base plate 1. Optionally, providing only one bolt and one first stepped hole 27 may cause the first positioning plate 2 to rotate around the bolt. To ensure that the first positioning plate 2 and the second positioning plate 3 are positioned opposite each other, at least two first stepped holes 27 and at least two bolts are required.

[0056] Optionally, the second positioning plate 3 has at least two second stepped holes 34 in a direction perpendicular to the base plate 1. The stepped surface of the second stepped hole 34 faces away from the base plate 1. At least two bolts pass through the second stepped holes 34 and are screwed to the base plate 1 to achieve a detachable connection between the second positioning plate 3 and the base plate 1. Optionally, providing only one bolt and one second stepped hole 34 may cause the second positioning plate 3 to rotate around the bolt. To ensure that the first positioning plate 2 and the second positioning plate 3 are positioned opposite each other, at least two second stepped holes 34 and at least two bolts are required.

[0057] Optionally, the base plate 1 is made of aluminum alloy, the first positioning plate 2 is made of aluminum alloy, and the second positioning plate 3 is made of aluminum alloy. This ensures both strength and lightweight design, and also helps the water testing device to remain rust-free for extended periods of use.

[0058] Using this water testing device, the number of operators can be reduced from two per shift to one, effectively saving labor costs. Furthermore, the water testing time for a single battery is reduced from five minutes to three minutes, significantly improving efficiency. Additionally, the base plate 1 and fasteners of this water testing device can be shared, further reducing testing costs. After using this device, the positioning method changes from manual to mechanical positioning, greatly increasing positioning accuracy and raising the water testing accuracy rate from 90% to over 98%, significantly improving testing precision and efficiency.

[0059] This embodiment also provides a water testing system, including an inflation device, an air pipe, a water tank, and the aforementioned water testing apparatus. The air pipe connects the vent 21 to the air outlet of the inflation device. Optionally, an air pipe connector is provided at one end of the air pipe, and the connector is inserted into the vent 21 to ensure that the air pipe does not detach and that there is always communication between the air pipe and the vent 21. Both the battery and the water testing apparatus are immersed in the water tank, which contains water, allowing for water-based testing of the battery's sealing performance. This water testing system reduces manpower consumption and improves testing accuracy and efficiency.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water testing device, characterized in that, The device includes a base plate (1), a first positioning plate (2), a second positioning plate (3), and fasteners. The first positioning plate (2) and the second positioning plate (3) are disposed opposite to each other on the base plate (1). The battery is sandwiched between the first positioning plate (2) and the second positioning plate (3). A vent hole (21) is provided through the first positioning plate (2). The first end plate of the battery with an injection hole abuts against the first positioning plate (2). The vent hole (21) communicates with the injection hole. A fastening threaded hole (31) is provided through the second positioning plate (3). The fastener is screwed into the fastening threaded hole (31) and one end abuts against the second end plate of the battery. The second end plate is disposed opposite to the first end plate.

2. The water testing device according to claim 1, characterized in that, It also includes a sealing ring, which is sandwiched between the first end plate and the first positioning plate (2). The sealing ring is used to ensure the sealing of the connection between the vent hole (21) and the injection hole.

3. The water testing device according to claim 2, characterized in that, A limiting groove (22) is provided on the end face of the first positioning plate (2) facing the second positioning plate (3). The limiting groove (22) is provided around the vent hole (21). The sealing ring is located at least partially in the limiting groove (22).

4. The water testing device according to any one of claims 1-3, characterized in that, The first positioning plate (2) has a first positioning groove (23) on its end face facing the second positioning plate (3), and the vent (21) is opened at the bottom of the first positioning groove (23). The side wall of the first positioning groove (23) is attached to the side wall of the battery. And / or, the second positioning plate (3) has a second positioning groove (32) on its end face facing the first positioning plate (2), the fastening threaded hole (31) is opened at the bottom of the second positioning groove (32), and the side wall of the second positioning groove (32) is attached to the side wall of the battery; and / or, the first positioning plate (2) has a third positioning groove (24) on its end face facing the second positioning plate (3), and the side wall of the third positioning groove (24) is attached to the side wall of the pole on the first end plate.

5. The water testing device according to claim 4, characterized in that, The sidewall of the first positioning groove (23) extends through the bottom plate (1) in a direction perpendicular to the plate surface and away from the bottom plate (1); and / or, the sidewall of the second positioning groove (32) extends through the bottom plate (1) in a direction perpendicular to the plate surface and away from the bottom plate (1). And / or, the sidewall of the third positioning groove (24) extends through the plate surface of the base plate (1) in a direction perpendicular to the base plate (1) and away from the base plate (1).

6. The water testing device according to claim 5, characterized in that, The sidewall of the first positioning groove (23) and the wall of the first positioning plate (2) facing away from the bottom plate (1) are curved to transition; and / or, the sidewall of the second positioning groove (32) and the wall of the second positioning plate (3) facing away from the bottom plate (1) are curved to transition; And / or, the sidewall of the third positioning groove (24) has a curved transition with the wall of the first positioning plate (2) facing away from the bottom plate (1).

7. The water testing device according to any one of claims 1-3, characterized in that, The first positioning plate (2) is detachably connected to the base plate (1), and / or the second positioning plate (3) is detachably connected to the base plate (1).

8. The water testing device according to claim 7, characterized in that, It also includes at least four bolts. The first positioning plate (2) has at least two first step holes (27) in a direction perpendicular to the base plate (1). The step surface of the first step hole (27) is away from the base plate (1). At least two bolts pass through the first step hole (27) and are screwed to the base plate (1). The second positioning plate (3) has at least two second step holes (34) in a direction perpendicular to the base plate (1). The step surface of the second step hole (34) is away from the base plate (1). At least two bolts pass through the second step hole (34) and are screwed to the base plate (1).

9. The water testing device according to any one of claims 1-3, characterized in that, The base plate (1) is made of aluminum alloy, and / or the first positioning plate (2) is made of aluminum alloy, and / or the second positioning plate (3) is made of aluminum alloy.

10. A water detection system, characterized in that, The device includes an inflation device, an air pipe, a water tank, and a water detection device as described in any one of claims 1-9, wherein the air pipe is used to connect the air vent (21) to the air outlet of the inflation device, and both the battery and the water detection device are immersed in the water tank, which contains water.

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