A microneedle mechanism and a battery cell testing device

Abstract

This utility model relates to the field of battery cell function testing, and more particularly to a micro-needle mechanism and battery cell testing device, comprising a battery cell fixture and a test end interface fixture. Its key feature is that it further includes a multi-directional synchronously moving pressing mechanism, which is used to press the terminal interface on the battery cell into the test end interface, thereby engaging and connecting the terminal interface and the test end interface. Firstly, this utility model provides a mechanical structure that reduces the working pressure on operators. This structure primarily eliminates the need for fingertip pressing, reducing the risk of injury to operators. Simultaneously, it significantly improves the efficiency of the entire testing process when dealing with this assembly process.

Description

Technical Field

[0001] This utility model relates to the field of battery cell function testing, and more particularly to a microneedle mechanism and battery cell testing device. Background Technology

[0002] Cell testing is an important step in testing the safety and integrity of the manufactured cells.

[0003] There are many types of battery cells, and similarly, the connectors used with battery cells also come in different types depending on the application.

[0004] like Figure 1 The terminal interface described herein requires pressing during testing, and uses elastic deformation to generate continuous compressive force to engage with the test terminal interface.

[0005] The conventional testing method involves manually pressing each battery cell into the test interface one by one with your fingertips. After a day of this, the operators experience significant pain in their fingertips. In addition, although the battery cells can be pre-positioned in a specific orientation to ensure that the connection and test interfaces are connected correctly each time, it is still a manual operation, which is very inefficient and affected by pain. Furthermore, this efficiency will decrease over time. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a microneedle mechanism and a battery cell testing device, aiming to solve the efficiency issues caused by manual operation in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a micro-needle mechanism, comprising a battery cell fixture and a test terminal interface fixture, characterized in that it further comprises a multi-directional synchronously moving pressing mechanism, wherein the pressing mechanism is used to press the terminal interface on the battery cell into the test terminal interface, so that the terminal interface and the test terminal interface are engaged and connected.

[0008] The beneficial effects of this utility model are:

[0009] 1. First, this utility model provides a mechanical structure that reduces the working pressure of operators. This structure mainly eliminates the fingertip pressing method, reducing the harm to operators. At the same time, it significantly improves the work efficiency of the entire testing process when facing this assembly process.

[0010] 2. Secondly, the choice of this pressing mechanism has better work efficiency, mainly based on its ability to achieve multi-directional synchronous movement. It is important to understand that multi-directional synchronization means that its state is closer to the final set value per unit time. In other words, after selecting the pressing mechanism, its speed is much faster than manual operation in the existing technology, thereby further improving work efficiency.

[0011] Generally, the aforementioned pressing mechanism includes an actuator that provides multi-directional motion and a wedge slider that provides height compensation to the first movable part of the actuator. Additionally, the actuator also includes a second movable part that drives the first movable part to move laterally and a passive bidirectional response part that maintains the second movable part in a specific position. This allows the extended portion of the wedge slider to press against the second movable part and change the state of the bidirectional response part during its movement. Structurally, the wedge slider, as the transmission medium, combined with the passive bidirectional response part, reduces the number of active sources to be selected. Furthermore, the bidirectional response part, being a passive structure, responds more promptly, allowing the second movable part to change the overall position of the first movable part with a superior response speed. More specifically, this change enables the first movable part to quickly approach or move away from the terminal interface of the battery cell.

[0012] In this specific embodiment, the bidirectional response part is a first spring, and the multidirectional nature of the actuator is bidirectional. Generally, the actuator includes a linear movement mechanism in two directions, which is formed by stacking a first linear movement mechanism and a second linear movement mechanism. The first linear movement mechanism includes a first mounting base, a first slide rail, a first slider, a second roller, and a first baffle. The first baffle and the first slide rail are disposed on the first mounting base, and the first slider and the first slide rail are slidably connected. One end of the first spring is embedded in the inner surface of the first baffle. The second linear movement mechanism includes a second slider, a second slide rail, and a second mounting base. The second mounting base is disposed on the first slider, and the second mounting base and the first baffle are in a relative relationship, so that the first spring is clamped and positioned. The second roller is disposed on the second mounting base and abuts against the inclined guide surface of the extension. The second slide rail is disposed on the second mounting base, and the second slider is slidably connected to the second slide rail. The second slider is provided with a third mounting base, and the outer end of the third mounting base is provided with a first roller. The wedge slider and the first roller are adjacent to each other, and the first roller abuts against the inclined surface of the wedge slider.

[0013] The entire movement process of the actuator is specifically driven by a cylinder, which pushes the wedge slider to move. In some embodiments, the cylinder is connected to the wedge slider via a connecting plate. Under the action of the cylinder, the height of the first roller changes with the position of the inclined plane. More specifically, under the action of the cylinder, the entire wedge slider moves outward. At this time, the area of ​​the inclined plane on the wedge slider that contacts the first roller gradually moves downward. That is to say, at the maximum stroke of the cylinder piston rod, the landing point of the first roller corresponds to the lowest point of the inclined plane. Similarly, the second slider will also sink along the second slide rail under the natural gravity.

[0014] In addition, during the maximum stroke of the cylinder piston rod, the extension on the wedge slider also moves with the wedge slider. The inclined guide surface of the extension provides a thrust with a continuously changing force direction to the first roller. This thrust causes the second mounting base to move on the first slide rail. At this time, the second mounting base compresses the first spring, causing the first spring to store energy.

[0015] The pressing mechanism includes a pressure rod, which is mounted on the third mounting base. According to the previous description of the actuator's operation, the maximum stroke of the cylinder piston rod means that the pressure rod retracts from the terminal interface and moves out of the working area.

[0016] The pressing process involves the cylinder dragging the wedge slider; for details, please refer to the above-mentioned detection and exit steps.

[0017] In addition, a second baffle and a second spring are provided on the second mounting base. The second baffle and the second slider are in a relative state. The second spring is located between the second baffle and the second slider. The purpose of this arrangement is to use the energy stored in the second spring to provide pressure to the pressure rod to press the terminal interface, ensuring that the pressure can make the terminal interface and the test terminal interface fit together smoothly, while also ensuring that the pressure is not too great and will damage the two interfaces.

[0018] A battery cell testing device comprising multiple microneedle mechanisms as described above. Attached Figure Description

[0019] Figure 1 This is a 3D diagram of the battery cell fixture.

[0020] Figure 2 This is a perspective view of the present invention.

[0021] Figure 3 yes Figure 2 A 3D view from another direction.

[0022] Figure 4 This is an exploded view of this utility model.

[0023] Figure 5 This is an exploded view of the present invention from another direction.

[0024] Figure 6 This is a partial enlarged view of the test interface fixture.

[0025] Figure 7 This is a diagram showing the correspondence between the wedge slider and the second roller.

[0026] Figure 8 yes Figure 7 A schematic diagram of its breakdown.

[0027] Figure 9 This is a 3D view of the battery cell testing device.

[0028] Figure 10 yes Figure 9 Enlarged diagram of point A. Detailed Implementation

[0029] Please see Figure 1-10 As shown, a microneedle mechanism includes a battery cell fixture 1 and a test terminal interface fixture 2. The feature is that it further includes a multi-directional synchronously moving pressing mechanism 3, which is used to press the terminal interface 41 on the battery cell 4 into the test terminal interface 51, so that the terminal interface 41 and the test terminal interface 51 are engaged and connected.

[0030] The beneficial effects of this utility model are:

[0031] First, this utility model provides a mechanical structure that reduces the working pressure of operators. This structure mainly eliminates the fingertip pressing method, reducing the harm to operators. At the same time, it significantly improves the work efficiency of the entire testing process when facing this assembly process.

[0032] Secondly, the pressing mechanism 3 has better work efficiency, mainly because it can achieve multi-directional synchronous movement. It should be clear that multi-directional synchronization means that its state is closer to the final set value per unit time. In other words, after selecting the pressing mechanism 3, its speed is much faster than manual operation in the existing technology, thereby further improving work efficiency.

[0033] Generally, the aforementioned pressing mechanism 3 includes an actuator that provides multi-directional movement and a wedge slider 31 that provides height compensation to the first movable part of the actuator. In addition, the actuator also has a second movable part that drives the first movable part to move laterally and a passive bidirectional response part 32 that maintains the second movable part in a specific position. During the movement of the extension 31a on the wedge slider 31, the inclined guide surface 31a-1 on the extension 31a presses against the second movable part and changes the state of the bidirectional response part 32. Structurally, the wedge slider 31, as the transmission medium, combined with the passive bidirectional response part 32, reduces the selection of the number of multiple active sources. Precisely, as a passive structure, the bidirectional response part 32 responds more promptly, allowing the second movable part to change the overall position of the first movable part with a more superior response speed. More specifically, this change allows the first movable part to quickly approach or move away from the terminal interface 41 of the battery cell 4.

[0034] In this specific embodiment, the bidirectional response unit 32 is a first spring, and the multidirectional nature of the actuator is bidirectional (for illustrative purposes only, not a further limitation of the structure). Generally, the actuator includes a linear movement mechanism in two directions, consisting of a first linear movement mechanism and a second linear movement mechanism stacked together. The first linear movement mechanism includes a first mounting base 33a, a first slide rail 33b, a first slider 33c, a second roller 33d, and a first baffle 33e. The first baffle 33e and the first slide rail 33b are disposed on the first mounting base 33a, the first slider 33c and the first slide rail 33b are slidably connected, and one end of the first spring is embedded in the inner surface of the first baffle 33e. The second linear movement mechanism includes a second slider 34a, a first slide rail 33b, a second roller 33d, and a first baffle 33e. The second slide rail 34b and the second mounting base 34c are arranged on the first slider 33c and are in a relative relationship with the first baffle 33e, so that the first spring is clamped and positioned. The second roller 33d is arranged on the second mounting base 34c and abuts against the inclined guide surface 31a-1 of the extension 31a. The second slide rail 34b is arranged on the second mounting base 34c. The second slider 34a is slidably connected to the second slide rail 34b. The second slider 34a is provided with a third mounting base 42. The outer end of the third mounting base 42 is provided with a first roller 35. The wedge slider 31 is adjacent to the first roller 35, and the first roller 35 abuts against the inclined surface 31b of the wedge slider 31.

[0035] The entire movement process of the actuator, specifically, the active source 36 is a cylinder, which pushes the wedge slider 31 to move. In some embodiments, the cylinder is connected to the wedge slider 31 through a connecting plate 37. Under the action of the cylinder, the height of the first roller 35 changes with the position of the inclined surface. More specifically, under the action of the cylinder, the entire wedge slider 31 moves outward. At this time, the area of ​​the inclined surface 31b on the wedge slider 31 that contacts the first roller 35 gradually moves downward. That is to say, when the cylinder piston rod is at its maximum stroke, the landing point of the first roller 35 corresponds to the lowest point of the inclined surface. Similarly, the second slider 34a will also sink along the second slide rail 34b under natural gravity.

[0036] In addition, during the maximum stroke of the cylinder piston rod, the extension 31a on the wedge slider 31 also moves along with the wedge slider 31. The inclined guide surface 31a-1 of the extension 31a provides a thrust with a continuously changing force direction to the second roller 33d. This thrust causes the second mounting base 34c to move on the first slide rail 34b. At this time, the second mounting base 34c compresses the first spring, causing the first spring to store energy.

[0037] The pressing mechanism 3 includes a pressing rod 36, which is mounted on the third mounting base 42. According to the previous description of the actuator operation, the maximum stroke of the cylinder piston rod means that the pressing rod 36 is retracted from the terminal interface 41 and moved outside the working area.

[0038] The pressing process involves the cylinder dragging the inclined wedge slider 31. For details, please refer to the detection and exit steps described above.

[0039] In addition, a second baffle 38 and a second spring 39 are provided on the second mounting base 34c. The second baffle 38 and the second slider 34a are in a relative state. The second spring 39 is located between the second baffle 38 and the second slider 34a. The purpose of this arrangement is to use the energy stored in the second spring 39 to provide pressure to the pressure rod 36 to press the terminal interface 41. This ensures that the pressure can make the terminal interface 41 and the test terminal interface 51 engage smoothly, while also ensuring that the pressure is not too great and will damage the two interfaces.

[0040] The second mounting base 34c and the first slider 33c together form the second movable part; while the second slider 34a is the first mounting part.

[0041] A battery cell testing device includes multiple microneedle mechanisms as described above.

[0042] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A microneedle mechanism, comprising a battery cell fixture and a test terminal interface fixture, characterized in that, It also includes a multi-directional synchronously moving pressing mechanism, which is used to press the terminal interface on the battery cell into the test terminal interface, so that the terminal interface and the test terminal interface are engaged and connected.

2. The microneedle mechanism according to claim 1, characterized in that, The pressing mechanism includes an actuator that provides multi-directional motion and a wedge slider that provides height compensation to the first movable part of the actuator. The actuator also has a second movable part that drives the first movable part to move laterally and a passive bidirectional response part that holds the second movable part in a specific position. During the movement of the extension on the wedge slider, the inclined guide surface on the extension presses against the second movable part and changes the state of the bidirectional response part.

3. The microneedle mechanism according to claim 1, characterized in that, The bidirectional response unit is the first spring.

4. A microneedle mechanism according to claim 3, characterized in that, The actuator includes a linear movement mechanism in two directions, consisting of a first linear movement mechanism and a second linear movement mechanism stacked together. The first linear movement mechanism includes a first mounting base, a first slide rail, a first slider, a second roller, and a first baffle. The first baffle and the first slide rail are mounted on the first mounting base, and the first slider and the first slide rail are slidably connected. One end of the first spring is embedded in the inner surface of the first baffle. The second linear movement mechanism includes a second slider, a second slide rail, and a second mounting base. The second mounting base is mounted on the first slider, and the second mounting base and the first baffle are in a relative relationship, causing the first spring to be clamped and positioned. The second roller is mounted on the second mounting base and abuts against the inclined guide surface of the extension. The second slide rail is mounted on the second mounting base, and the second slider and the second slide rail are slidably connected. The second slider is provided with a third mounting base, and the outer end of the third mounting base is provided with a first roller. The wedge slider is adjacent to the first roller, and the first roller abuts against the inclined surface of the wedge slider.

5. A microneedle mechanism according to claim 1, characterized in that, It also includes an active source, which is a cylinder, and the output end of the cylinder is connected to the wedge sliding member.

6. A microneedle mechanism according to claim 5, characterized in that, It also includes a connecting plate, through which the cylinder is connected to the wedge sliding member.

7. A microneedle mechanism according to claim 4, characterized in that, The pressing mechanism includes a pressure rod, which is mounted on the third mounting base.

8. A microneedle mechanism according to claim 4, characterized in that, The second mounting base is also provided with a second baffle and a second spring. The second baffle and the second slider are in a relative state, and the second spring is located between the second baffle and the second slider.

9. A battery cell testing device, characterized in that, It includes multiple microneedle mechanisms as described in any one of claims 1-8.

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