Battery pack air tightness detection device

Abstract

The utility model provides a battery pack air tightness detection device, including a leakage detection mechanism and a fixing mechanism; the fixing mechanism can drive the battery pack to move into the leakage detection mechanism, and the leakage detection mechanism can cover the battery pack for air tightness detection. Through the mutual cooperation of the leakage detection mechanism and the fixing mechanism, the utility model can cover a battery pack with a large volume for air tightness detection.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery pack air tightness detection device. Background Art

[0002] Conventional battery packs are usually tested for air tightness by filling the battery pack with compressed air.

[0003] New energy battery packs are the mainstream products in the current automotive industry. At the same time, the air tightness testing of new energy battery packs is also very particular. Since general new energy battery packs are relatively large, with a basic length of more than 1 meter, the internal volume of the entire cavity is very large, so the use of compressed air as an air tightness test makes the test more difficult than general conventional products. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to perform air tightness detection on a battery pack with a relatively large volume.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A battery pack air tightness detection device comprises a leakage detection mechanism (3) and a fixing mechanism (4); the fixing mechanism (4) can drive the battery pack to move into the leakage detection mechanism (3), and the leakage detection mechanism (3) can cover the battery pack to perform air tightness detection.

[0007] Beneficial effect: Through the cooperation between the leakage detection mechanism and the fixing mechanism, the leakage detection mechanism can cover a battery pack with a larger volume for air tightness detection.

[0008] Furthermore, it also comprises a detection chamber (1) and a workbench (2), wherein the workbench (2) is arranged with a concave top, the detection chamber (1) is arranged on one side of the workbench (2), a leakage detection mechanism (3) is arranged on the side of the workbench (2) close to the detection chamber (1), the leakage detection mechanism (3) is located in the detection chamber (1), and a fixing mechanism (4) is slidably connected to the side of the workbench (2) away from the detection chamber (1).

[0009] Furthermore, the leakage detection mechanism (3) comprises a detector (31), a telescopic rod, a sealed cover (35), and a compressed air pipe (36); the output end of the detector (31) is provided with a telescopic rod, the free end of the telescopic rod is provided with a sealed cover (35), one end of the compressed air pipe (36) is connected to the sealed cover (35), and the other end of the compressed air pipe (36) is connected to the inflation pump in the detector (31).

[0010] Furthermore, the leakage detection mechanism (3) also includes an air pressure sensing head (37), one end of the air pressure sensing head (37) is connected to the sealed cover (35), and the other end of the air pressure sensing head (37) is electrically connected to the detector (31).

[0011] Beneficial effect: By setting up the air pressure sensing head, the environment can be monitored during the device detection process, reducing the impact of the outside world on the device.

[0012] Furthermore, the leakage detection mechanism (3) also includes a limit plate (33) and a limit rod (38), the output end of the telescopic rod passes through the limit plate (33) and is fixed on the limit plate (33), the four corners of the limit plate (33) are slidably connected to the limit rod (38), the limit plate (33) can slide up and down along the limit rod (38), and the compression air pipe (36) and the air pressure sensor head (37) are both passed through and slidably connected in the limit plate (33).

[0013] Furthermore, sliding tubes (34) are fixedly penetrated at the four corners of the limiting plate (33), and each of the sliding tubes (34) is slidably connected with a limiting rod (38).

[0014] Furthermore, a display screen (311) is fixed on the detector (31).

[0015] Furthermore, the fixing mechanism (4) comprises a movable seat (41), a fixing frame (42), a fixing seat (43), a spring (44), a fixing rod (45), and a fixing plate (46); the bottom of the movable seat (41) is slidably connected to the workbench (2); a fixing frame (42) is fixed on the top wall of the movable seat (41); a plurality of fixing seats (43) are fixed at intervals on the corresponding inner walls of the fixing frame (42); a spring (44) is fixed inside the fixing seat (43); a fixing rod (45) is fixed on the free side of each of the springs (44); and each of the fixing rods (45) passes through the fixing seat (43), extends out, and is fixed on the fixing plate (46).

[0016] Beneficial effect: By setting the fixing mechanism, it is convenient to fix the battery pack during detection and maintain stability during detection.

[0017] Furthermore, the length of the fixing plate (46) is consistent with the length of the inner wall of the fixing frame (42).

[0018] Furthermore, a sliding groove (21) is provided on the inner side of the bottom wall of the workbench (2) along the X-axis, and a sliding rail (22) is fixed in the sliding groove (21) along the X-axis; the movable seat (41) comprises a seat body (411), a sliding block (412), and a limiting hole (413); a sliding block (412) is fixed at one end of the seat body (411) close to the sliding groove (21), and a limiting hole (413) is provided through the sliding block (412) along the X-axis, and the sliding block (412) is sleeved on the sliding rail (22) through the limiting hole (413).

[0019] Beneficial effect: The mutual cooperation between the limiting hole and the sliding rail can prevent the seat body from being misplaced during movement.

[0020] The advantages of the utility model are:

[0021] In the utility model, the leakage detection mechanism and the fixing mechanism cooperate with each other, so that the leakage detection mechanism can cover a battery pack with a relatively large volume to perform air tightness detection.

[0022] The utility model can monitor the environment during the device detection process by setting the air pressure sensing head, thereby reducing the influence of the outside world on the device.

[0023] The utility model provides a fixing mechanism to facilitate fixing of the battery pack during detection and maintain stability during detection.

[0024] The utility model can prevent the seat body from being misplaced during movement through the mutual cooperation of the limiting hole and the sliding rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional diagram of a battery pack air tightness detection device according to a first embodiment of the utility model;

[0026] Figure 2 It is a right side view of the leakage detection mechanism in the battery pack air tightness detection device of the first embodiment of the utility model;

[0027] Figure 3 It is a right side view of the fixing mechanism in the battery pack air tightness detection device of the first embodiment of the utility model;

[0028] Figure 4 It is a top view of the fixing mechanism in the battery pack air tightness detection device according to the first embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1

[0031] like Figure 1 , Figure 2 As shown, this embodiment provides a battery pack air tightness detection device, including a detection chamber 1, a workbench 2, a leakage detection mechanism 3, and a fixing mechanism 4.

[0032] like Figure 1 , Figure 2 As shown, the detection chamber 1 is fixed on one side of the workbench 2, and the workbench 2 is concave at the top. A leakage detection mechanism 3 is fixed on the side of the workbench 2 close to the detection chamber 1, and the top of the leakage detection mechanism 3 is located in the detection chamber 1. A fixing mechanism 4 is slidably connected to the side of the workbench 2 away from the detection chamber 1, and the fixing mechanism 4 can be moved to the bottom of the leakage detection mechanism 3.

[0033] like Figure 1 , Figure 2 As shown, the leakage detection mechanism 3 includes a detector 31, an electric telescopic rod 32, a limit plate 33, a slide tube 34, a sealed cover 35, a compression air pipe 36, an air pressure sensor head 37, and a limit rod 38; the detector 31 is located in the detection chamber 1, a display screen 311 is fixed on the detector 31, and an observation window 11 is provided in the detection chamber 1 at the display screen 311, an electric telescopic rod 32 is fixed in the middle of the bottom end of the detector 31, the output end of the electric telescopic rod 32 passes through the limit plate 33 and is fixed on the limit plate 33, the protruding end of the electric telescopic rod 32 is fixed with a sealed cover 35, the four corners of the limit plate 33 are all penetrated and fixed with slide tubes 34, each slide tube 34 is slidably connected to a limit rod 38, and each limit rod 38 is fixed Between the detection chamber 1 and the workbench 2, the electric telescopic rod 32 can drive the limit plate 33 to move along the Z axis on the limit rod 38; a compression air pipe 36 is fixed on one side of the bottom end of the detector 31, and the bottom end of the compression air pipe 36 passes through the limit plate 33 and is connected and fixed in the closed cover 35, and the top end of the compression air pipe 36 is connected and fixed to the air pump (not shown) in the detector 31, and the compression air pipe 36 is slidably connected to the limit plate 33; an air pressure sensor head 37 is fixed on the other side of the bottom end of the detector 31, and the bottom end of the air pressure sensor head 37 passes through the limit plate 33 and is connected and fixed in the closed cover 35, and the top end of the air pressure sensor head 37 is electrically connected to the detector 31, and the air pressure sensor head 37 is slidably connected to the limit plate 33;

[0034] By driving the electric telescopic rod 32, the electric telescopic rod 32 drives the limit plate 33 and the sealed cover 35, and the limit plate 33 drives the sliding tube 34 to move downward on the surface of the limit rod 38. The sealed cover 35 covers the battery pack. At this time, the air pump 312 is driven by the detector 31 to inject compressed air into the sealed cover 35 through the compressed air pipe 36. After cutting off the air and maintaining the pressure, the air pressure sensor head 37 analyzes the pressure value in the sealed cover 35, observes the display screen 311 of the detector 31 to understand the value, and controls the environment during the device detection process to reduce the impact of the outside world on the device.

[0035] like Figure 1 , Figure 3 , Figure 4 As shown, the fixing mechanism 4 includes a moving seat 41, a fixing frame 42, a fixing seat 43, a spring 44, a fixing rod 45, and a fixing plate 46;

[0036] The movable seat 41 includes a seat body 411, a sliding block 412, and a limiting hole 413. The bottom end of the seat body 411 is fixed with sliding blocks 412 at intervals along the Y axis. The sliding blocks 412 are all provided with limiting holes 413 along the X axis. The inner side of the bottom wall of the workbench 2 is provided with a sliding groove 21 along the X axis. The sliding grooves 21 are provided with two and are arranged at intervals along the Y axis. A sliding rail 22 is fixed in each sliding groove 21 along the X axis. The sliding block 412 is sleeved on the sliding rail 22 through the limiting hole 413 to prevent the seat body from being misplaced during movement. By pushing the seat body 411, the seat body 411 drives the sliding block 412, and the sliding block 412 moves on the surface of the sliding rail 22 to push the seat body 411 into the detection chamber 1.

[0037] The fixed frame 42 is fixed on the top of the seat body 411, and a plurality of fixed seats 43 are fixed on the inner walls of the front and rear sides of the fixed frame 42 at intervals along the X-axis. Springs 44 are fixed inside the fixed seats 43, and a fixing rod 45 is fixed on the free side of each spring 44. Each fixing rod 45 penetrates the fixed seat 43 and extends out to be fixed with a fixing plate 46. By placing the battery pack into the fixed frame 42, pushing the fixing plate 46, the fixing plate 46 drives the fixing rod 45, and the fixing rod 45 drives the spring 44. The spring 44 is compressed inside the fixed seat 43 to form a reverse force. The reverse force fixes the battery pack inside the fixed frame 42, so that the battery pack can be fixed during detection and stability can be maintained during detection. Two fixing plates 46 are provided, which are mirror-symmetrically arranged on the front and rear sides of the fixed frame 42, and the length of the fixing plate 46 is consistent with the length of the inner wall of the fixed frame 42.

[0038] When in use, place the battery pack into the fixed frame 42, push the fixed plate 46, the fixed plate 46 drives the fixed rod 45, the fixed rod 45 drives the spring 44, the spring 44 is compressed inside the fixed seat 43, forming a reverse force, and the reverse force fixes the battery pack inside the fixed frame 42; then push the seat body 411, the seat body 411 drives the sliding block 412, the sliding block 412 moves on the surface of the sliding rail 22, and pushes the seat body 411 into the detection chamber 1; at this time, drive the electric telescopic rod 32, the electric telescopic rod 32 drives the limit plate 33 and the closed cover 35, the limit plate 33 drives the sliding tube 34 to move downward on the surface of the limit rod, and the closed cover 35 covers the battery pack, and at this time, the air pump is driven by the detector 31 to inject compressed air into the closed cover 35 through the compressed air pipe 36. After cutting off the air and maintaining the pressure, the air pressure sensor head 37 analyzes the pressure value in the closed cover 35, and observes the display screen 311 of the detector 31 to understand the value.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack air tightness detection device, characterized in that: The invention comprises a leakage detection mechanism (3) and a fixing mechanism (4); the fixing mechanism (4) can drive a battery pack to move into the leakage detection mechanism (3), and the leakage detection mechanism (3) can cover the battery pack to perform air tightness detection; the leakage detection mechanism (3) comprises a detector (31), a telescopic rod, a sealed cover (35), and a compressed air pipe (36); the output end of the detector (31) is provided with a telescopic rod, the free end of the telescopic rod is provided with a sealed cover (35), one end of the compressed air pipe (36) is connected to the sealed cover (35), and the other end of the compressed air pipe (36) is connected to an air pump in the detector (31).

2. A battery pack air tightness detection device according to claim 1, characterized in that: It also comprises a detection chamber (1) and a workbench (2); the workbench (2) is arranged with a concave top; the detection chamber (1) is arranged on one side of the workbench (2); a leakage detection mechanism (3) is arranged on the side of the workbench (2) close to the detection chamber (1); the leakage detection mechanism (3) is located in the detection chamber (1); and a fixing mechanism (4) is slidably connected to the side of the workbench (2) away from the detection chamber (1).

3. A battery pack air tightness detection device according to claim 1, characterized in that: The leakage detection mechanism (3) further comprises an air pressure sensing head (37), one end of which is connected to the sealed cover (35), and the other end of which is electrically connected to the detector (31).

4. A battery pack air tightness detection device according to claim 3, characterized in that: The leakage detection mechanism (3) also includes a limit plate (33) and a limit rod (38); the output end of the telescopic rod passes through the limit plate (33) and is fixed on the limit plate (33); the four corners of the limit plate (33) are slidably connected to the limit rod (38); the limit plate (33) can slide up and down along the limit rod (38); the compression air pipe (36) and the air pressure sensor head (37) both pass through and are slidably connected in the limit plate (33).

5. A battery pack air tightness detection device according to claim 4, characterized in that: Sliding tubes (34) are fixedly passed through the four corners of the limiting plate (33), and each of the sliding tubes (34) is slidably connected to a limiting rod (38).

6. A battery pack air tightness detection device according to claim 1, characterized in that: A display screen (311) is fixed on the detector (31).

7. A battery pack air tightness detection device according to claim 2, characterized in that: The fixing mechanism (4) comprises a movable seat (41), a fixing frame (42), a fixing seat (43), a spring (44), a fixing rod (45), and a fixing plate (46); the bottom of the movable seat (41) is slidably connected to the workbench (2); a fixing frame (42) is fixed on the top wall of the movable seat (41); a plurality of fixing seats (43) are fixed at intervals on the corresponding inner walls of the fixing frame (42); a spring (44) is fixed inside the fixing seat (43); a fixing rod (45) is fixed on the free side of each of the springs (44); and each of the fixing rods (45) penetrates the fixing seat (43), extends out, and is fixed on the fixing plate (46).

8. A battery pack air tightness detection device according to claim 7, characterized in that: The length of the fixing plate (46) is consistent with the length of the inner wall of the fixing frame (42).

9. A battery pack air tightness detection device according to claim 7, characterized in that: A sliding groove (21) is provided on the inner side of the bottom wall of the workbench (2) along the X-axis, and a sliding rail (22) is fixed in the sliding groove (21) along the X-axis; the movable seat (41) comprises a seat body (411), a sliding block (412), and a limiting hole (413); a sliding block (412) is fixed at one end of the seat body (411) close to the sliding groove (21), and a limiting hole (413) is provided through the sliding block (412) along the X-axis, and the sliding block (412) is sleeved on the sliding rail (22) through the limiting hole (413).

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