Cylindrical battery metal shell roundness detection device

Abstract

The utility model provides a cylindrical battery metal shell roundness detection device, which comprises a metal shell positioning table, a rack, a driving mechanism, a linkage mechanism, a detection ball, a detection piece and a reminding piece, and is characterized in that the metal shell positioning table is used for bearing a cylindrical battery metal shell with an upward opening; the detection ball is located above the metal shell positioning table and matched with the inner diameter of the cylindrical battery metal shell, the linkage end of the linkage mechanism is connected with the detection ball and can drive the detection ball to ascend and descend and move along with ascending and descending of the detection ball, and the driving mechanism can drive the linkage end of the linkage mechanism to ascend or release the linkage mechanism. The linkage end of the linkage mechanism drives the detection ball to move and be positioned to a high position or the detection ball descends under the action of gravity and pulls the linkage end of the linkage mechanism to descend, and the detection piece detects the moving position of the linkage mechanism and controls the reminding piece to act when the detection ball descends below the preset height. The device is simple in structure, low in cost and high in detection accuracy.

Description

Technical Field

[0001] The utility model relates to the field of secondary batteries, in particular to a device for detecting the roundness of a cylindrical battery metal shell. Background Art

[0002] With the continuous promotion of lithium-ion battery cell application fields, such as pure electric logistics vehicles, shared light vehicle lithium-ion products, etc., the safety performance and energy ratio of the batteries used in these products are very high, and the battery production process is also required to be high. For cylindrical batteries, the roundness of the metal shell outside the battery must be ensured. For this reason, the prior art needs to detect the roundness of the cylindrical battery metal shell after the metal shell is produced. Referring to Chinese patent CN 219869471U, a device for online detection of the true roundness of the cylindrical battery aluminum shell is disclosed, wherein the detection tool needs to be inserted into the metal shell to detect the size of the metal shell, which is particularly dependent on the accuracy of the detection tool. Not only is the cost high, but the detection accuracy is also limited. In addition, the existing method can also detect the roundness of the metal shell incoming material through CCD vision. This type of detection method has the problems of inaccurate detection, large edge grasping error, high cost, and complex and cumbersome mechanism. The metal shell with NG incoming roundness that is not identified will be circulated, which will cause the core to be scratched when the core enters the metal shell, and the risk of thermal runaway of the battery.

[0003] Therefore, there is an urgent need for a cylindrical battery metal shell roundness detection device that can solve the above problems. Utility Model Content

[0004] The utility model aims to provide a cylindrical battery metal shell roundness detection device with simple structure, low cost and high detection accuracy.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a cylindrical battery metal shell roundness detection device, including a metal shell positioning platform, a frame, a driving mechanism, a linkage mechanism, a detection ball, a detection piece and a reminder piece, the metal shell positioning platform is used to carry a cylindrical battery metal shell with an opening facing upward, the detection ball is located above the metal shell positioning platform and matches the inner diameter of the cylindrical battery metal shell, the linkage end of the linkage mechanism is connected to the detection ball, which can drive the detection ball to rise and fall and move with the rise and fall of the detection ball, the driving mechanism can drive the linkage end of the linkage mechanism to rise or release the linkage mechanism, so that the linkage end of the linkage mechanism drives the detection ball to move and position to a high position or the detection ball descends under gravity and pulls the linkage end of the linkage mechanism to descend, the detection piece detects the moving position of the linkage mechanism, and controls the reminder piece to act when the detection ball descends below a preset height.

[0006] Preferably, the linkage mechanism includes a lever and a linkage, the middle rotation of the lever is installed on the frame, the first end of the lever is movably connected or flexibly connected to the first end of the linkage, the second end of the linkage is the linkage end and is connected to the detection ball, the driving mechanism can drive the first end of the lever to move to a lower position or release the first end of the lever, so that the detection ball is positioned at a high position or moves downward under the action of gravity, the detection member detects the rotation angle of the lever, and controls the action of the reminder when the detection ball drops below a preset height.

[0007] Preferably, the linkage is a hard rod, the first end of the linkage is rotatably connected to the first end of the lever, and the second end of the linkage is rotatably connected or universally connected to the detection ball relative to a horizontal axis.

[0008] Preferably, the linking member is slidably mounted on the frame along a vertical direction, and the first end of the linking member is slidably connected to the first end of the lever and can move along the longitudinal direction of the lever.

[0009] Preferably, the linkage member includes a flexible member and a sliding rod, the first end of the flexible member is connected to the first end of the lever, the second end of the flexible member is connected to the sliding rod, the lower end of the sliding rod is connected to the detection ball, and the sliding rod is slidably installed on the frame along a vertical direction.

[0010] Preferably, the driving mechanism is connected to the first end of the lever in an abutting manner, and the lifting and lowering action of the driving mechanism can press downward or release the first end of the lever.

[0011] Specifically, the driving mechanism includes a lifting driving part and a rotating roller. The rotating roller is rotatably mounted on a lifting rod of the lifting driving part. A sliding groove for sliding the rotating roller is arranged at the first end of the lever along the longitudinal direction of the lever.

[0012] Preferably, the driving mechanism is connected to the first end of the lever via a pull rope, and can pull the first end of the lever downward or release it, and the driving head of the driving mechanism is staggered in the horizontal direction with the position of the lever.

[0013] Preferably, the cylindrical battery metal shell roundness detection device also includes a control button, and operating the control button can drive the driving head of the driving mechanism to move up and down between a high position and a low position to drive downward or release the first end of the lever.

[0014] Preferably, the detection element is a proximity switch or a position sensor.

[0015] Preferably, the reminder is a buzzer or an indicator light.

[0016] Specifically, the detection element is a proximity switch, and the reminder element is an indicator light on the proximity switch.

[0017] Compared with the prior art, the utility model directly places a detection ball into the battery metal shell, and determines whether the roundness of the battery metal shell meets the standard by determining whether the detection ball can completely fall into the battery metal shell through the position of the linkage mechanism linked to the detection ball. The detection accuracy is high. Furthermore, the utility model links the detection component with the reminder component. After the detection ball completely falls into the battery metal shell and pulls the second end of the lever to rise, the reminder component is controlled to move to remind the battery that the metal shell meets the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a high position in Example 1 of the utility model.

[0019] Figure 2 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a low position in Example 1 of the utility model.

[0020] Figure 3 It is a side view of the cylindrical battery metal shell roundness detection device in Example 1 of the utility model.

[0021] Figure 4 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a high position in Example 2 of the utility model.

[0022] Figure 5 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a low position in Example 2 of the utility model.

[0023] Figure 6 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a high position in Example 3 of the utility model.

[0024] Figure 7 It is a structural diagram of the cylindrical battery metal shell roundness detection device when the detection ball is located at a low position in Example 3 of the utility model. DETAILED DESCRIPTION

[0025] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0026] Embodiment 1:

[0027] refer to Figure 1 and Figure 2The utility model discloses a cylindrical battery metal shell roundness detection device, including a metal shell positioning platform 2, a frame 1, a lever 21, a detection ball 23, a linkage 22, a driving mechanism 11, a detection member 31 and a reminder member 32. The metal shell positioning platform 2 is used to carry a cylindrical battery metal shell 200 with an opening facing upward, the detection ball 23 is located above the metal shell positioning platform 2 and matches the inner diameter of the cylindrical battery metal shell 200, the middle of the lever 21 is rotatably mounted on the frame 1, the first end 211 of the lever 21 is movably connected to the first end of the linkage 22 and can drive the first end of the linkage rod 22 to rise and be positioned to a high position (to be detected position), the second end 212 of the linkage 22 is connected to the detection ball 23, and the driving mechanism The first end 211 of the lever 21 can be driven to a high position or released so that the first end 211 of the lever 21 moves downward under the gravity of the detection ball 23. At this time, the second end 212 of the lever 21 is positioned at a low position or rises under the drive of the detection ball 23. The detection member 31 is installed at a position corresponding to a certain part of the lever 21 to detect the preset angle of the lever 21 and control the reminder member 32 to act when the detection ball 23 drops below the preset height. The battery metal shell 200 is a battery steel shell.

[0028] Specifically, when performing roundness detection, the battery metal shell 200 to be detected is positioned and placed on the metal shell positioning platform 2. Figure 1 At this time, the driving mechanism 11 drives the first end 211 of the lever 21 to a high position, the second end 212 of the lever 21 is positioned at a high position, and the detection ball 23 is located above the battery metal shell 200. Next, refer to Figure 2 , the driving mechanism 11 acts to release the first end 211 of the lever 21 so that the first end 211 of the lever 21 drops under the gravity of the detection ball 23, and the second end 212 of the lever 21 rises to a high position accordingly. The detection ball 23 falls into the opening of the battery metal shell 200 under the action of gravity, and gradually goes deeper until it drops to the preset low position of its own movement or the outer shell of the battery metal shell 200 can be in the middle position due to the low roundness of the battery metal shell 200. When the detection ball 23 drops below its own low position, the lever 21 rotates to a preset angle, and the detection member 31 acts accordingly to control the reminder member 32 to issue a prompt that the roundness passes. When the detection ball 23 is stuck in the middle position, the lever 21 cannot move to the preset angle, and the detection member 31 cannot perform the preset action, and a fault is detected at this time.

[0029] Preferably, a second detection member 32 for detecting the action of the driving mechanism 11 may be provided. The second detection member 32 controls a timer to start timing from 0 after the driving mechanism 11 releases the detection ball 23, and controls the fault alarm to issue a fault alarm when the preset time is reached and the detection member 31 does not act. The output end of the second detection member 32 is connected to the control end of the timer, the output end of the timer is connected to the control end of the first switch, the output end of the detection member 31 is connected to the control end of the second switch, and the first switch and the second switch are connected in series to the control circuit or power supply circuit of the fault alarm.

[0030] refer to Figures 1 to 3 The linking member 22 is a hard rod, a first end of the linking member 22 is movably connected to a first end of the lever 21 , and a second end of the linking member 22 is connected to the detection ball 23 .

[0031] refer to Figures 1 to 3 The linking member 22 is slidably mounted on the frame 1 in the vertical direction, and the first end of the linking member 22 is slidably connected to the first end of the lever 21 and can move in the longitudinal direction of the lever 21. The first end of the linking member 22 is movably connected to the first end of the lever 21 through a movable assembly, and the movable assembly includes a longitudinal slide groove formed at the first end of the linking member 22 and a rotating slider slidably mounted in the longitudinal slide groove and can rotate in the longitudinal slide groove. The rotating slider is formed at the first end of the linking member 22, and the extension direction of the longitudinal slide groove is parallel to the longitudinal direction of the lever 21 or forms an acute angle.

[0032] refer to Figure 3 The linkage 22 is slidably mounted on the frame 1 along the vertical direction, and the first end of the linkage 22 is slidably connected to the first end of the lever 21 and can slide along the longitudinal direction of the lever 21. The frame 1 has a sliding groove 11 that is delayed along the vertical direction, the sliding member 222 is fixed on the linkage rod 22, and the sliding head of the sliding member 222 is slidably mounted in the sliding groove 11, wherein the width of the sliding groove 11 in the horizontal direction is greater than the width of the sliding head, so that the sliding head has a certain degree of freedom of movement in the horizontal direction in the sliding groove 11, ensuring that the linkage rod 22 will not deviate too much while sliding down smoothly along the sliding groove 11 under the gravity of the detection ball 23, and can smoothly enter the opening of the cylindrical battery metal shell 200.

[0033] refer to Figure 1 and Figure 2, the detection component 31 is a proximity switch, position sensor or laser detector for detecting the rotation angle of the lever 21, or the moving position of a certain part of the lever 21. The reminder component 32 is a buzzer, an indicator light or a display screen, etc. Specifically, the detection component 31 is installed on the lever 21 or the frame 1 near the lever 21. The reminder component 32 is the indicator light on the proximity switch. Of course, the proximity switch can also be connected in series to the power supply circuit of the reminder component 32 to control the indication action of the reminder component. When the detection component 31 is a sensor, the output end of the detection component 31 is connected to the control end of the reminder component 32 to control the action of the reminder component 32.

[0034] The driving mechanism 11 is connected to the first end of the lever 21 in abutting manner to position the first end of the lever at an upper limit position or release the first end of the lever 21 .

[0035] Specifically, the driving mechanism 11 includes a lifting driving part 112 and a rotating roller 111. The rotating roller 111 is rotatably installed on the lifting rod of the lifting driving part 112. The first end of the lever 21 is provided with a sliding groove 213 for the rotating roller 111 to slide along the longitudinal direction of the lever 21.

[0036] Different from this embodiment, in another embodiment, the driving mechanism 11 is connected to the first end of the lever 21 through a pull rope, and the first end of the lever 21 can be pulled downward or released, and the driving head of the driving mechanism 11 is staggered with the position of the lever 21 in the horizontal direction.

[0037] The cylindrical battery metal shell 200 roundness detection device further includes a control button (not shown in the figure), and operating the control button can drive the driving head of the driving mechanism 11 to the upper position (such as Figure 1 as shown) and the lower position (as Figure 2 As shown in the figure, the second end 212 of the lever 21 is moved up and down to position the second end 212 of the lever 21 at the upper limit position or release the second end 212 of the lever 21 so that the second end 212 of the lever 21 rises driven by the detection ball 23.

[0038] Embodiment 2:

[0039] refer to Figures 4 to 5 The linking member 22 is a hard rod, the first end of the linking member 22 is rotatably connected to the first end of the lever 21, and the second end of the linking member 22 is rotatably connected to the detection ball 23 relative to the horizontal axis. Of course, the second end of the linking member 22 and the detection ball 23 can also be universally connected.

[0040] refer to Figure 4 and Figure 5When performing roundness detection, the battery metal shell 200 to be detected is positioned and placed on the metal shell positioning platform 2, referring to Figure 4 At this time, the driving mechanism 11 drives the first end 211 of the lever 21 to a high position, the second end of the lever 21 is positioned at a low position, and the detection ball 23 is located above the battery metal shell 200. Next, refer to Figure 5 , the driving mechanism 11 is actuated, and the driving head (rotating roller 111) moves upward to a high position to release the lever 21. The first end 211 of the lever 21 descends under the pull of the gravity of the detection ball 23, and the second end 212 of the lever 21 rises accordingly. The detection ball 23 falls into the opening of the battery metal shell 200 under the action of gravity, and gradually goes deeper until it descends to the low position of its own movement or is stuck in the middle position by the outer shell of the battery metal shell 200 because the roundness of the battery metal shell 200 does not meet the standard. When the detection ball 23 descends to its own low position, the lever 21 rotates to a preset angle, and the detection member 31 acts accordingly to control the reminder member 32 to issue a prompt that the roundness passes.

[0041] Of course, different from the above embodiment, in another embodiment, the linkage 22 includes a flexible member and a sliding rod, the first end of the flexible member is fixedly connected to the first end of the lever 21, the second end of the flexible member is fixedly connected to the sliding rod, the end of the sliding rod is connected to the detection ball 23, and the sliding rod is slidably installed on the frame 1 along the vertical direction.

[0042] Embodiment 3:

[0043] Different from the above-mentioned embodiment, the linkage mechanism is formed by the lever 21 and the linkage member 22. Figure 6 and Figure 7 In this embodiment, the linkage mechanism includes a first slide groove 51 formed on the frame 11 and extending in the vertical direction, a first slider 52 slidably installed in the first slide groove 51, and a flexible member 42. The first slider 52 is fixedly connected to the handle 321 of the detection ball 23 through an extension rod, and the handle 321 is fixed on the detection ball 23. In this embodiment, the detection member 31 detects the descending height of the first slider 52, and when the first slider 52 descends below a preset height, it triggers and controls the reminder member 32 to act, reminding that the detection is passed.

[0044] In this embodiment, the driving mechanism 41 is connected to the flexible member 42, and pulls the detection ball 23 up or releases the detection ball 23 through the flexible member 42. The flexible member 42 can be connected to the first slider 52, or can be connected to the handle 321.

[0045] The flexible member 42 is a rope.

[0046] The detection element 31 may be a travel switch, or a laser detector, etc. The reminder element 32 may be an indicator light, a buzzer, a display screen, etc.

[0047] refer to Figure 6 and Figure 7 When performing roundness detection, the battery metal shell 200 to be detected is positioned and placed on the metal shell positioning platform 2, referring to Figure 6 and Figure 7 At this time, the driving mechanism 11 pulls the detection ball 23 to a high position (preset height to be detected) through the flexible member 42, and the detection ball 23 is located above the battery metal shell 200. Next, the driving head (rotating roller 111) of the driving mechanism 11 descends to release the first slider 52, and the first slider 52 descends under the gravity of the detection ball 23, and the detection ball 23 falls into the opening of the battery metal shell 200, and gradually goes deeper until it descends to the low position of the detection ball 23 or is stuck in the middle by the outer shell of the battery metal shell 200 due to the low roundness of the battery metal shell 200. When the detection ball 23 descends to the low position, the detection member 31 acts accordingly to control the reminder member 32 to issue a prompt that the roundness detection has passed. If the detection ball 23 is stuck in the middle, the detection member 31 does not act, and the reminder member 32 does not give a prompt.

[0048] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A cylindrical battery metal shell roundness detection device, characterized in that: It includes a metal shell positioning platform, a frame, a driving mechanism, a linkage mechanism, a detection ball, a detection piece and a reminder piece. The metal shell positioning platform is used to support a cylindrical battery metal shell with an opening facing upward. The detection ball is located above the metal shell positioning platform and matches the inner diameter of the cylindrical battery metal shell. The linkage end of the linkage mechanism is connected to the detection ball, which can drive the detection ball to rise and fall and move with the rise and fall of the detection ball. The driving mechanism can drive the linkage end of the linkage mechanism to rise or release the linkage mechanism, so that the linkage end of the linkage mechanism drives the detection ball to move and position to a high position, or the detection ball descends under gravity and pulls the linkage end of the linkage mechanism to descend. The detection piece detects the moving position of the linkage mechanism and controls the action of the reminder piece when the detection ball descends below a preset height.

2. The cylindrical battery metal shell roundness detection device according to claim 1, characterized in that: The linkage mechanism includes a lever and a linkage member, the middle rotation of the lever is installed on the frame, the first end of the lever is movably connected or flexibly connected to the first end of the linkage member, the second end of the linkage member is the linkage end and is connected to the detection ball, the driving mechanism can drive the first end of the lever to move to a lower position or release the first end of the lever, so that the detection ball is positioned at a high position or moves downward under the action of gravity, the detection member detects the rotation angle of the lever, and controls the action of the reminder when the detection ball drops below a preset height.

3. The cylindrical battery metal shell roundness detection device according to claim 2, characterized in that: The linking member is a hard rod, the first end of the linking member is rotatably connected to the first end of the lever, and the second end of the linking member is rotatably connected or universally connected to the detection ball relative to the horizontal axis; or, The linking member is slidably mounted on the frame along a vertical direction, and the first end of the linking member is slidably connected to the first end of the lever and can move along the longitudinal direction of the lever; or, The linkage member includes a flexible member and a sliding rod, the first end of the flexible member is connected to the first end of the lever, the second end of the flexible member is connected to the sliding rod, the lower end of the sliding rod is connected to the detection ball, and the sliding rod is slidably installed on the frame along a vertical direction.

4. The cylindrical battery metal shell roundness detection device according to claim 2, characterized in that: The driving mechanism is in contact connection with the first end of the lever, and the lifting action of the driving mechanism can press downward or release the first end of the lever.

5. The cylindrical battery metal shell roundness detection device according to claim 4, characterized in that: The driving mechanism comprises a lifting driving part and a rotating roller. The rotating roller is rotatably mounted on a lifting rod of the lifting driving part. A sliding groove for sliding the rotating roller is arranged along the longitudinal direction of the lever at the first end of the lever.

6. The cylindrical battery metal shell roundness detection device according to claim 2, characterized in that: The driving mechanism is connected to the first end of the lever via a pull rope, and can pull the first end of the lever downward or release it, and the driving head of the driving mechanism is staggered with the position of the lever in the horizontal direction.

7. The cylindrical battery metal shell roundness detection device according to claim 2, characterized in that: It also includes a control button, and operating the control button can drive the driving head of the driving mechanism to move up and down between a high position and a low position to drive downward or release the first end of the lever.

8. The cylindrical battery metal shell roundness detection device according to claim 1, characterized in that: The detection element is a proximity switch or a position sensor.

9. The cylindrical battery metal shell roundness detection device according to claim 1, characterized in that: The reminder is a buzzer or an indicator light.

10. The cylindrical battery metal shell roundness detection device according to claim 9, characterized in that: The detection element is a proximity switch, and the reminder element is an indicator light on the proximity switch.

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