Ball hitting test device for battery system test

Abstract

The utility model relates to the technical field of battery tests, in particular to a ball strike test device for a battery system test. The device comprises a base and a ball head which is driven by a power part on the base and does lifting motion, two linear lasers are arranged beside the ball head, and irradiation paths of the two linear lasers form two laser light curtains which intersect with each other and are vertically arranged. And the projection of the intersection line of the two laser light curtains on the to-be-tested surface of the battery is the impact action point of the ball head on the battery. According to the utility model, in the ball hitting process, the impact action point drop point on the battery is accurate, whether the center line of the motion path of the impact ball is aligned with the to-be-tested point at the bottom of the battery can be efficiently and accurately judged, the position of the test point at the bottom of the battery can be conveniently and rapidly adjusted, and the efficiency of the ball hitting test of the battery is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically a ball impact testing device for battery system testing. Background Technology

[0002] The bottom ball impact test of the battery simulates the scenario where the battery pack, which is located on the underside of the vehicle, is deformed by being squeezed or hit by an obstacle during the bottoming process.

[0003] As described in the text of Chinese Patent Publication No. CN221764837U entitled "Ball Impact Test Device for the Bottom of a Battery Pack", an impact ball is launched by a power release component with an adjustable angle between the power release direction and the horizontal direction, thereby conducting a multi-angle ball impact test on the battery.

[0004] In traditional testing devices, such as those described in the cited patent, the impact ball's ability to follow a predetermined straight path is significantly affected by the initial launch kinetic energy and travel distance, making precise point-to-point impact difficult. Furthermore, even when the impact ball's path is straight, the point of impact on the battery is mostly determined by direct visual observation. This involves adjusting the relative position of the test point on the battery's bottom with the center line of the impact ball's path and determining if they are aligned. This process is inefficient and prone to significant errors. Moreover, in actual testing, multi-point impact testing is often required. This involves selecting multiple test points on the battery, impacting one point, adjusting the battery's position to align another test point with the impactor, and repeating the impact test until all test points have been impacted. This necessitates multiple battery adjustments, further reducing testing efficiency, thus requiring a solution. Utility Model Content

[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a ball impact test device for battery system testing. During the ball impact process, not only is the impact point on the battery accurate, but it can also efficiently and accurately determine whether the center line of the impact ball's movement path is aligned with the test point on the bottom of the battery. It also facilitates the quick adjustment of the position of the test point on the bottom of the battery, effectively improving the efficiency of battery ball impact testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A ball impact testing device for battery system testing includes a base and a ball head driven by a power unit on the base to move up and down. Compared to launching the ball head outwards, this device ensures precise impact point on the battery. Two linear lasers are arranged beside the ball head, their illumination paths forming two intersecting, vertically aligned laser screens. The projection of the intersection line of the two laser screens onto the battery surface to be tested is the impact point of the ball head. By observing whether the projection of the intersection line of the two laser screens on the battery surface coincides with the marked test point, it is possible to quickly determine whether the battery has moved into position. Compared to the traditional method of manually observing and positioning the battery, this invention can efficiently and accurately determine whether the vertical center line of the ball head is aligned with the test point on the bottom of the battery, and also facilitates rapid adjustment of the position of the test point on the bottom of the battery, effectively improving the efficiency of battery impact testing.

[0008] As a further aspect of this invention: a mounting bracket is rotatably fitted onto the base around the vertical center line. The mounting bracket has an angled structure from a vertical perspective, and the corner of the mounting bracket rotatably engages with the base. Two linear lasers are respectively mounted on the outer ends of the two angled sides. By rotating the mounting bracket, the two linear lasers can be driven to rotate synchronously around the vertical center line. By observing whether the intersection point of the intersecting light spots projected by the intersection lines of the two laser beams onto the battery test surface changes, the installation position of the linear lasers can be calibrated to check for any deviations.

[0009] As a further improvement of this utility model: a rotating ring is rotatably fitted on the base and arranged coaxially with the vertical center line, and the mounting bracket is fixed on the rotating ring. The rotating ring is used as a rotating bearing, which makes the rotational resistance of the mounting bracket smaller and more stable.

[0010] As a further improvement of this invention: a driven gear is coaxially fixed on the rotating ring, and a driving gear meshing with the driven gear is rotatably fitted on the base. A motor driving the driving gear to rotate is mounted on the base. By driving the driving gear to mesh with the driven gear through the motor, the mounting bracket is automatically driven to rotate around the vertical center line. Before each impact test, the motor-driven rotation of the mounting bracket can automatically calibrate whether there is any deviation in the installation position of the laser pointer, ensuring accurate alignment of the ball head and the battery test point during each impact test.

[0011] As a further improvement of this invention: an elongated hole is provided on the corner edge of the mounting bracket, extending vertically through the corner edge, and the length direction of the elongated hole is perpendicular to the length direction of the corner edge. The linear laser is locked and fixed to the mounting bracket by bolts passing through the elongated hole. This allows for fine-tuning of the installation position of the linear laser, avoiding difficulties in accurately positioning and installing the laser due to machining errors in the positioning holes during the manufacturing process of the mounting bracket.

[0012] As a further improvement of this invention: two laser light curtains intersect perpendicularly in a vertical view, thereby forming cross guide lines in the X and Y directions on the battery test surface. When adjusting the battery position using two linear travel mechanisms distributed along the X and Y axes, the battery can be quickly and accurately adjusted to the required position based on the cross guide lines formed by the cross light spots.

[0013] As a further improvement of this invention, a camera is also arranged beside the ball head, with the camera's acquisition path tilted towards the point of impact. When the battery requires continuous testing at multiple test points, the battery may catch fire, smoke, or explode during the interval between adjacent tests. The camera 70 eliminates the need for close-range inspection, thus avoiding harm to testing personnel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By using a power unit to drive the sphere in a lifting and lowering motion, compared to launching the sphere outwards, the impact point of the sphere on the battery can be ensured to be precise. Furthermore, two linear lasers, each with its illumination path angled towards the test surface of the battery, are installed. The illumination paths of the two linear lasers form two intersecting, vertically arranged laser screens, and the intersection line of the two laser screens overlaps with the vertical center line of the sphere. The projection of this intersection line onto the test surface of the battery is the impact point of the sphere. Before testing, the test points to be tested are marked on the test surface of the battery. During battery positioning, by moving the battery and observing whether the projection of the intersection line of the two laser screens on the test surface coincides with the marked test points, it is possible to quickly determine whether the battery has moved into position. Compared to the traditional method of manually observing and positioning the battery, this invention can efficiently and accurately determine whether the vertical center line of the sphere is aligned with the test point on the bottom of the battery, and also facilitates quick adjustment of the position of the test point on the bottom of the battery, effectively improving the efficiency of battery impact testing.

[0016] 2. When a battery needs to be tested continuously at multiple test points, there is a risk of fire, smoke, or explosion between adjacent tests. By using a camera, personnel can inspect the battery at close range without needing to do so, thus avoiding harm to the testers.

[0017] 3. Two linear lasers are fixed on a mounting bracket that rotates around a vertical center line. By rotating the mounting bracket, the two linear lasers can be driven to rotate synchronously around the vertical center line. By observing whether the intersection point of the cross beams projected on the battery test surface by the intersection line of the two laser beams changes, the installation position of the linear lasers can be calibrated to see if there is any deviation.

[0018] 4. Since the impact test of the battery will cause the base to vibrate, the motor drives the active gear and driven gear to mesh, thereby automatically driving the mounting bracket to rotate around the vertical center line. Before each impact test, the motor drives the mounting bracket to rotate, and the camera observes whether the intersection point of the intersecting light spots projected on the battery test surface by the intersection line of the two laser light curtains changes. This automatically calibrates whether there is any deviation in the installation position of the linear laser, ensuring the precise alignment of the ball head and the battery test point during each impact test. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the illumination state of the single-line laser in this utility model.

[0021] In the diagram: 10, base; 11, power unit; 20, ball head; 30, mounting bracket; 31, elongated hole; 40, linear laser; 41, laser light curtain; 50, driven gear; 60, driving gear; 70, camera. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0024] The specific structure of this utility model is as follows: Figure 1-2As shown, its main structure includes a base 10 and a ball head 20 driven by a power unit 11 on the base 10 to move up and down. Two linear lasers 40 are arranged on the side of the ball head 20. The power unit 11 can be any linear power structure such as a cylinder or cam, which is not described in detail here. Using the power unit 11 to drive the ball head 20 to move up and down ensures that the impact point of the ball head 20 on the battery is accurate, compared to the method of emitting the ball head 20 outward. In addition, the irradiation paths of the two linear lasers 40 are both inclined towards the test surface of the battery, forming two intersecting and vertically arranged laser light curtains 41. The intersection line of the two laser light curtains 41 overlaps with the vertical center line of the ball head 20. The projection of this intersection line on the test surface of the battery is the impact point of the ball head 20 on the battery. Before testing, the test points to be tested are marked on the battery's test surface. During battery positioning, by moving the battery and observing whether the projection of the intersection line of the two laser light curtains 41 on the battery's test surface coincides with the marked test points, it is possible to quickly determine whether the battery has been moved into position. Compared to the traditional method of manually observing and positioning the battery, this invention can efficiently and accurately determine whether the vertical center line of the ball head is aligned with the test point at the bottom of the battery, and also facilitates quick adjustment of the position of the test point at the bottom of the battery, effectively improving the efficiency of battery impact testing. With this linear laser arrangement 40, even if the ball head 20 and the battery need to undergo impact testing at different angles, after rotating the base 10 or the battery, the intersection line of the two laser light curtains 41 always overlaps with the vertical center line of the ball head 20. That is, by observing whether the projection of the intersection line of the two laser light curtains 41 on the battery's test surface coincides with the marked test points, it is still possible to quickly determine whether the battery has been moved into position.

[0025] Furthermore, such as Figure 1 As shown, a camera 70 is also arranged beside the ball head 20, with the acquisition path of the camera 70 tilted towards the point of impact. When the battery needs to be tested continuously at multiple test points, the battery may catch fire, smoke, or explode during the interval between adjacent tests. The camera 70 eliminates the need for personnel to observe at close range, thus avoiding harm to the test personnel.

[0026] Based on the above, such as Figure 1As shown, a mounting bracket 30 is rotatably mounted on the base 10 around a vertical center line. The mounting bracket 30 has an angled structure from a vertical perspective, and the corner of the mounting bracket 30 rotatably engages with the base 10. Two linear lasers 40 are respectively mounted on the outer ends of the two angled sides. This arrangement allows the two linear lasers 40 to rotate synchronously around the vertical center line during the rotation of the mounting bracket 30. By observing whether the intersection point of the intersecting light spots projected by the intersection line of the two laser light curtains 41 onto the battery test surface changes, the installation position of the linear lasers 40 can be calibrated to ensure it is not misaligned. Furthermore, the synchronous rotation of the two linear lasers 40 also causes changes in the angle between the two laser light curtains 41 and the acquisition angle of the camera 70. This angle change allows the camera 70 to acquire light from the laser light curtains 41 at multiple angles, avoiding interference from the laser light curtains 41 on the camera 70 and preventing inaccurate judgment of whether the projection of the intersection line of the two laser light curtains 41 onto the battery test surface coincides with the test point marking.

[0027] Based on the above, such as Figure 2 As shown, the two laser light curtains 41 intersect perpendicularly in a vertical view, which makes the projection of the intersection line of the two laser light curtains 41 onto the battery test surface a standard cross-shaped light spot; thus forming cross guide lines in the X and Y axis directions on the battery test surface. When adjusting the battery position using two linear travel mechanisms distributed along the X and Y axes, the battery can be quickly and accurately adjusted to the required position according to the cross guide lines formed by the cross-shaped light spot.

[0028] Based on the above, such as Figure 1 As shown, a rotating ring coaxially arranged with the vertical center line is rotatably fitted on the base 10. The mounting bracket 30 is fixed on the rotating ring, using the rotating ring as a rotary bearing, which reduces the rotational resistance of the mounting bracket 30 and makes it more stable. In actual implementation, an annular track coaxially arranged with the vertical center line can also be set on the base 10. The mounting bracket 30 can also achieve rotational movement around the vertical center by sliding the slider around the annular track.

[0029] Furthermore, such as Figure 1As shown, a driven gear 50 is coaxially fixed on the rotating ring, and a driving gear 60 meshes with the driven gear 50 on the base 10. A motor that drives the driving gear 60 to rotate is mounted on the base 10. Since the impact test of the battery will cause the base 10 to vibrate, the motor drives the driving gear 60 to mesh with the driven gear 50, thereby automatically driving the mounting bracket 30 to rotate around the vertical center line. Before each impact test, the motor drives the mounting bracket 30 to rotate, and the camera 70 observes whether the intersection point of the intersecting light spots projected by the intersection lines of the two laser light curtains 41 on the battery test surface changes. This allows for automatic calibration of whether the installation position of the linear laser 40 is deviated, ensuring the precise alignment of the ball head 20 with the battery test point during each impact test.

[0030] Based on the above, an elongated hole 31 is provided on the corner edge of the mounting bracket 30. The elongated hole 31 penetrates the corner edge vertically, and the length direction of the hole 31 is perpendicular to the length direction of the corner edge. The linear laser 40 is locked and fixed to the mounting bracket 30 by bolts passing through the elongated hole 31. The setting of the elongated hole 31 allows for fine adjustment of the installation position of the linear laser 40, avoiding the difficulty in accurately positioning and installing the linear laser 40 due to machining errors of the positioning holes during the processing of the mounting bracket 30.

[0031] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0033] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A ball impact testing device for battery system testing, characterized in that, The device includes a base (10) and a ball head (20) driven by a power unit (11) on the base (10) to move up and down. Two linear lasers (40) are arranged on the side of the ball head (20). The irradiation paths of the two linear lasers (40) form two intersecting laser screens (41) that are both vertically arranged. The projection of the intersection line of the two laser screens (41) on the battery test surface is the impact point of the ball head (20) on the battery.

2. The ball impact testing device for battery system testing according to claim 1, characterized in that, The base (10) is fitted with a mounting bracket (30) that rotates around the vertical center line. The mounting bracket (30) has a folded structure in the vertical view and the corner of the mounting bracket (30) rotates with the base (10). Two linear lasers (40) are respectively installed at the outer ends of the two folded sides.

3. The ball impact testing device for battery system testing according to claim 2, characterized in that, The base (10) is fitted with a rotating ring arranged coaxially with the vertical center line, and the mounting bracket (30) is fixed on the rotating ring.

4. The ball impact testing device for battery system testing according to claim 3, characterized in that, A driven gear (50) is coaxially fixed on the rotating ring, and a driving gear (60) that meshes with the driven gear (50) is rotatably fitted on the base (10). A motor that drives the driving gear (60) to rotate is installed on the base (10).

5. A ball impact testing device for battery system testing according to any one of claims 2-4, characterized in that, The mounting bracket (30) has an elongated hole (31) on its corner edge. The elongated hole (31) passes through the corner edge in the vertical direction, and the length direction of the hole (31) is perpendicular to the length direction of the corner edge. The linear laser (40) is locked and fixed to the mounting bracket (30) by a bolt passing through the elongated hole (31).

6. A ball impact testing device for battery system testing according to any one of claims 1-4, characterized in that, The two laser light curtains (41) intersect perpendicularly in the vertical view.

7. A ball impact testing device for battery system testing according to any one of claims 1-4, characterized in that, A camera (70) is also arranged on the side of the ball head (20), and the acquisition path of the camera (70) is tilted towards the impact point.

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