New energy automobile battery airtightness detection device

Abstract

The utility model discloses an air tightness detection device for a new energy automobile battery. The air tightness detection device comprises a detection table, a lifting assembly, a sealing cover, a pushing and supporting assembly, a vacuum air exhaust assembly and a detection assembly, the lifting assembly is arranged at the top of the detection table, is connected with the sealing cover and is used for driving the sealing cover to move in the vertical direction; the pushing and supporting assembly is located in the sealing cover and comprises a pushing piece, a sliding piece and a supporting piece. The output end of the pushing piece is connected with the sliding piece, the bottom of the sliding piece is slidably connected with the top of the detection table, and the pushing piece is used for pushing the sliding piece to move in the horizontal direction; the top of the sliding piece is connected with the supporting piece, and the supporting piece is used for supporting the battery pack; the vacuum pumping assembly is communicated with the internal space of the sealing cover and is used for pumping gas in the sealing cover; the detection assembly is used for being connected with a detection port of the battery pack and is used for introducing gas into the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery air tightness detection, in particular to an air tightness detection device for a battery of a new energy vehicle. Background Art

[0002] With the rapid development of new energy vehicle technology, the safety and reliability of batteries as its core components are increasingly attracting people's attention. Among them, the air tightness detection of battery packs is a key link to ensure the stability of battery performance and prevent electrolyte leakage and foreign material intrusion. However, the existing new energy vehicle battery air tightness detection devices have some problems in the detection process, especially in the detection of the air tightness of the bottom of the battery pack, and its accuracy is often challenged.

[0003] At present, most air tightness testing devices are designed to fit the bottom of the battery pack tightly against the test bench when testing the battery pack. Although this design facilitates the testing operation, once there is a leak at the bottom of the battery pack, the test bench surface is likely to block the leak, causing the leak to be concealed and unable to be accurately detected. In this case, even if there are safety hazards in the battery pack, the testing device may give a qualified judgment, which brings great risks to the use of new energy vehicles. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a new energy vehicle battery air tightness detection device.

[0005] The technical solution adopted by the utility model is:

[0006] A new energy vehicle battery air tightness detection device, comprising: a detection platform, a lifting component, a sealing cover, a pushing support component, a vacuum exhaust component and a detection component;

[0007] The lifting assembly is arranged on the top of the detection platform, the lifting assembly is connected to the sealing cover, and the lifting assembly is used to drive the sealing cover to move in the vertical direction;

[0008] The pushing support assembly is located in the sealing cover, and the pushing support assembly includes: a pushing member, a sliding member and a supporting member; the output end of the pushing member is connected to the sliding member, the bottom of the sliding member is slidably connected to the top of the detection platform, and the pushing member is used to push the sliding member to move in the horizontal direction; the top of the sliding member is connected to the supporting member, and the supporting member is used to support the battery pack;

[0009] The vacuum pumping assembly is in communication with the inner space of the sealing cover, and the vacuum pumping assembly is used to extract the gas in the sealing cover;

[0010] The detection component is used to be connected to the detection port of the battery pack, and the detection component is used to introduce gas into the battery pack.

[0011] Preferably, the lifting assembly includes a support frame and a cylinder; the support frame is fixedly connected to the top of the inspection platform, the cylinder is arranged on the support frame, and the output end of the cylinder is connected to the sealing cover.

[0012] Preferably, the interior of the testing bench is hollow, the vacuum exhaust component is arranged inside the testing bench, and the vacuum exhaust component includes: a vacuum pump, an exhaust pipe and a vacuum gauge; the output end of the vacuum pump is connected to the exhaust pipe, the exhaust end of the exhaust pipe is connected to the top of the testing bench, the exhaust end of the exhaust pipe is located below the sealing cover, and the tube body of the exhaust pipe is connected to the vacuum gauge; a pressure relief valve is arranged on the side wall of the sealing cover.

[0013] Preferably, the detection assembly includes a detection tube and a solenoid valve, one end of the detection tube is used to connect to the detection port of the battery pack, and the other end of the detection tube is connected to the solenoid valve, and the solenoid valve is located outside the sealing cover.

[0014] Preferably, a smoke generator is further included, and the smoke generator is connected to the solenoid valve.

[0015] Preferably, two groups of pushing support assemblies are relatively arranged, wherein one support member is used to support one end of the battery pack, and the other support member is used to support the other end of the battery pack, and the displacement directions of the two support members are opposite.

[0016] Preferably, a sealing groove is provided on the top of the detection platform, and the bottom of the sealing cover is arranged in the sealing groove.

[0017] Preferably, a sealing gasket is fixedly mounted on the inner cavity wall of the sealing groove.

[0018] The beneficial effects of the utility model are at least one of the following: by driving the sealing cover to move in the vertical direction through the lifting assembly, the sealing cover can be easily raised and lowered, thereby easily placing the battery pack on the pushing support assembly. This avoids direct contact between the battery pack and the test bench during the test process, and eliminates the problem of inaccurate testing caused by bottom leakage being blocked by the test bench surface.

[0019] The support member in the push support assembly can slide relative to the battery pack, that is, the contact position between the battery pack and the support member is changed during the air tightness test. This ensures that every part of the battery pack can be tested evenly, effectively preventing a leaking part of the battery pack from being blocked by the support member and not being detected, and greatly improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall front view and cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the push support assembly of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the vacuum pumping component and the detection component of the utility model;

[0023] Figure 4 It is a schematic diagram of the top view of the structure of the detection platform of the utility model.

[0024] Reference numerals: 1, test bench; 101, sealing groove; 102, sealing pad; 2, lifting assembly; 201, support frame; 202, cylinder; 3, sealing cover; 301, pressure relief valve; 4, push support assembly; 401, push member; 402, sliding member; 403, support member; 5, vacuum exhaust assembly; 501, vacuum pump; 502, exhaust pipe; 503, vacuum gauge; 6, test assembly; 601, test pipe; 602, solenoid valve; 603, smoke generator; DETAILED DESCRIPTION

[0025] In order to make the purpose, scheme and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0026] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0027] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0029] Example

[0030] like Figure 1 As shown, a new energy vehicle battery air tightness detection device is characterized in that it includes: a detection platform 1, a lifting component 2, a sealing cover 3, a pushing support component 4, a vacuum exhaust component 5 and a detection component 6; the lifting component 2 is arranged on the top of the detection platform 1, the lifting component 2 is connected to the sealing cover 3, and the lifting component 2 is used to drive the sealing cover 3 to move in the vertical direction;

[0031] like Figure 2 As shown, the pushing support assembly 4 is located in the sealing cover 3, and the pushing support assembly 4 includes: a pushing member 401, a sliding member 402 and a supporting member 403; the pushing member 401 is usually the part that provides power, and it can be an electric, pneumatic or hydraulic driver, responsible for driving the movement of the sliding member 402, such as a cylinder. The output end of the pushing member 401 is connected to the sliding member 402, and the bottom of the sliding member 402 is slidably connected to the top of the detection platform 1. For example, the top of the detection platform 1 can be provided with a slide rail or a slide groove, and the sliding member 402 can be a slide rod, and the bottom is provided with a roller or a slider corresponding to the slide rail or the slide groove.

[0032] The pusher 401 is used to push the sliding member 402 to move in the horizontal direction; the top of the sliding member 402 is connected to the support member 403, and the specific connection method can be welding, and the support member 403 is used to support the battery pack. The support member 403 can be a support platform. It can be understood that in order to reduce the friction between the support member and the battery pack so that the support member can slide relative to the battery pack more smoothly, the contact surface between the support member and the battery pack is a smooth plane.

[0033] The vacuum pumping assembly 5 is connected to the internal space of the sealing cover 3, and the vacuum pumping assembly 5 is used to extract the gas in the sealing cover 3; the detection assembly 6 is used to be connected to the detection port of the battery pack, and the detection assembly 6 is used to introduce gas into the battery pack.

[0034] In this embodiment, the sealing cover can be easily raised and lowered by driving the sealing cover to move in the vertical direction through the lifting assembly, so that the battery pack can be easily placed on the pushing support assembly, avoiding direct contact between the battery pack and the test bench during the test process, and eliminating the problem of inaccurate detection caused by the bottom leakage being blocked by the test bench surface. The support member in the pushing support assembly can slide to change the contact position between the battery pack and the support member during the airtightness test. It ensures that every part of the battery pack can be evenly tested, effectively preventing a leaking part of the battery pack from being blocked by the support member and not being detected, and greatly improving the accuracy and reliability of the test. The coordinated use of the vacuum exhaust assembly and the detection assembly allows a negative pressure environment to be formed in the sealing cover, and the air tightness of the battery pack can be detected by introducing gas into the battery pack. This detection method is comprehensive and effective, and can accurately identify the leaking part of the battery pack.

[0035] In a possible implementation, Figure 3 As shown, the lifting assembly 2 includes a support frame 201 and a cylinder 202; the support frame 201 is fixedly connected to the top of the test bench 1, the cylinder 202 is arranged on the support frame 201, and the output end of the cylinder 202 is connected to the sealing cover 3. The interior of the test bench 1 is hollow, and the vacuum exhaust assembly 5 is arranged in the test bench 1, and the vacuum exhaust assembly 5 includes: a vacuum pump 501, an exhaust pipe 502 and a vacuum gauge 503; the output end of the vacuum pump 501 is connected to the exhaust pipe 502, the exhaust end of the exhaust pipe 502 is connected to the top of the test bench 1, the exhaust end of the exhaust pipe 502 is located below the sealing cover 3, and the tube body of the exhaust pipe 502 is connected to the vacuum gauge 503; a pressure relief valve 301 is arranged on the side wall of the sealing cover 3. The detection assembly 6 includes a detection tube 601 and a solenoid valve 602 . One end of the detection tube 601 is used to connect to the detection port of the battery pack, and the other end of the detection tube 601 is connected to the solenoid valve 602 . The solenoid valve 602 is located outside the sealing cover 3 .

[0036] In this embodiment, the cylinder 202 is started to move its output end downward, thereby driving the sealing cover 3 to move downward until the sealing cover 3 covers the battery pack, the detection component, and the push support component to form a closed space. In this process, the pressure relief valve 301 provided on the side wall of the sealing cover 3 should be in a closed state to ensure the airtightness of the internal space of the sealing cover 3. The vacuum pump 501 is turned on, and air is extracted from the inside of the sealing cover 3 through the exhaust pipe 502. This process can be monitored by observing the vacuum gauge 503 to ensure that the predetermined vacuum degree is reached. The purpose of vacuuming is to simulate the working condition of the battery pack under a specific pressure environment to detect its sealing performance. The solenoid valve 602 is opened to allow gas to flow into the detection port of the battery pack. By observing the vacuum gauge, it can be determined whether the battery pack has a leak. After the test is completed, the pressure relief valve 301 is opened to allow the pressure inside the sealing cover 3 to gradually return to normal atmospheric pressure. The cylinder 202 is started to move its output end upward, driving the sealing cover 3 to leave the battery pack, thereby ending the entire test process.

[0037] In a possible implementation, Figure 3 As shown, a smoke generator 603 is also included, and the smoke generator 603 is connected to the solenoid valve 602. In the process of testing whether the battery pack is leaking, if a leak is found through a vacuum gauge, the smoke generated by the smoke generator 603 flows into the detection port of the battery pack through the detection tube 601, and the smoke leaks from the place where the battery pack is leaking, thereby observing the leaking point of the battery pack.

[0038] In a possible implementation, two groups of push support assemblies 4 are arranged relatively, one support member 403 is used to support one end of the battery pack, and the other support member 403 is used to support the other end of the battery pack, and the displacement directions of the two support members 403 are opposite. Since both ends of the battery pack are supported and the support members can move relatively, the battery pack can maintain a more stable position during the detection process. This helps to reduce the shaking of the battery pack.

[0039] In a possible implementation, Figure 4 As shown, a sealing groove 101 is provided on the top of the detection platform 1, and the bottom of the sealing cover 3 is provided in the sealing groove 101. A sealing gasket 102 is fixedly installed on the inner cavity wall of the sealing groove 101.

[0040] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A new energy vehicle battery air tightness detection device, characterized in that: include: A testing platform (1), a lifting component (2), a sealing cover (3), a pushing support component (4), a vacuum exhaust component (5) and a testing component (6); The lifting assembly (2) is arranged on the top of the detection platform (1), the lifting assembly (2) is connected to the sealing cover (3), and the lifting assembly (2) is used to drive the sealing cover (3) to move in a vertical direction; The pushing support assembly (4) is located in the sealing cover (3), and the pushing support assembly (4) comprises: a pushing member (401), a sliding member (402) and a supporting member (403); the output end of the pushing member (401) is connected to the sliding member (402), the bottom of the sliding member (402) is slidably connected to the top of the detection platform (1), and the pushing member (401) is used to push the sliding member (402) to move in a horizontal direction; the top of the sliding member (402) is connected to the supporting member (403), and the supporting member (403) is used to support the battery pack; The vacuum pumping component (5) is in communication with the internal space of the sealing cover (3), and the vacuum pumping component (5) is used to extract gas from the sealing cover (3); The detection component (6) is used to be connected to a detection port of a battery pack, and the detection component (6) is used to introduce gas into the battery pack.

2. A new energy vehicle battery air tightness detection device according to claim 1, characterized in that: The lifting assembly (2) comprises a support frame (201) and a cylinder (202); the support frame (201) is fixedly connected to the top of the detection platform (1), the cylinder (202) is arranged on the support frame (201), and the output end of the cylinder (202) is connected to the sealing cover (3).

3. A new energy vehicle battery air tightness detection device according to claim 1 or 2, characterized in that: The interior of the testing platform (1) is hollow, and the vacuum exhaust component (5) is arranged in the testing platform (1), and the vacuum exhaust component (5) comprises: a vacuum pump (501), an exhaust pipe (502) and a vacuum gauge (503); the output end of the vacuum pump (501) is connected to the exhaust pipe (502), the exhaust end of the exhaust pipe (502) is connected to the top of the testing platform (1), the exhaust end of the exhaust pipe (502) is located below the sealing cover (3), and the tube body of the exhaust pipe (502) is connected to the vacuum gauge (503); a pressure relief valve (301) is arranged on the side wall of the sealing cover (3).

4. A new energy vehicle battery air tightness detection device according to claim 3, characterized in that: The detection assembly (6) comprises a detection tube (601) and a solenoid valve (602); one end of the detection tube (601) is used to be connected to a detection port of a battery pack; the other end of the detection tube (601) is connected to the solenoid valve (602); and the solenoid valve (602) is located outside the sealing cover (3).

5. A new energy vehicle battery air tightness detection device according to claim 4, characterized in that: It also includes a smoke generator (603), and the smoke generator (603) is connected to the solenoid valve (602).

6. A new energy vehicle battery air tightness detection device according to claim 1, characterized in that: Two groups of pushing support assemblies (4) are arranged relatively to each other, wherein one support member (403) is used to support one end of the battery pack, and the other support member (403) is used to support the other end of the battery pack, and the displacement directions of the two support members (403) are opposite.

7. A new energy vehicle battery air tightness detection device according to claim 1, characterized in that: A sealing groove (101) is arranged on the top of the detection platform (1), and the bottom of the sealing cover (3) is arranged in the sealing groove (101).

8. A new energy vehicle battery air tightness detection device according to claim 7, characterized in that: A sealing gasket (102) is fixedly mounted on the inner cavity wall of the sealing groove (101).

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