A battery testing device

Abstract

This utility model proposes a battery testing device, belonging to the field of rail train technology, to solve the problems of existing technologies that mainly rely on manual handheld measuring instruments to test the voltage of batteries one by one, which is labor-intensive and prone to safety accidents. The device includes a base with a robotic arm mounted on it. A monitoring device is located at the end of the robotic arm furthest from the base. The monitoring device includes a vertical plate at the end of the robotic arm, with a mounting bracket on the plate. A vertically oriented mounting hole is provided through the mounting bracket, and a probe is detachably connected to the inside of the mounting hole via a connecting device. This utility model replaces manual handheld operation with a robotic arm, solving the high-intensity problem of "bending over and frequent movement" in traditional manual testing. The probe and mounting bracket are quickly assembled and disassembled via the connecting device, supporting "immediate replacement upon damage," avoiding downtime of the entire device due to a single component failure, and conforming to the maintenance-friendly design principles of industrial equipment.

Description

Technical Field

[0001] This utility model belongs to the field of rail train technology, specifically relating to a battery testing device. Background Technology

[0002] As a core component of the onboard auxiliary power supply system, subway train batteries are responsible for supplying power to emergency lighting, door control systems, and communication equipment. Their performance directly affects train operation safety and the protection of passengers' lives and property. To eliminate the battery "memory effect" and restore capacity, it is necessary to conduct deep charge and discharge tests on battery packs (such as a single pack of 78 nickel-metal hydride batteries) regularly, requiring high-frequency monitoring of individual battery voltage parameters during the process.

[0003] The existing testing device adopts a handheld measuring instrument design, with the core components being a single voltage detection probe and a manual operating handle. From a structural and functional analysis, this design has several flaws: First, the rigid structure of single-point, sequential measurement leads to low efficiency. A single probe can only contact each battery electrode individually, while subway battery packs are arranged in a dense matrix. Operators must frequently bend over and turn sideways to locate different electrodes, requiring repeated mechanical actions for each battery pack test, resulting in extremely high labor intensity. Second, the rigid connection structure between the manual operating handle and the probe lacks safety protection design. When the battery experiences leakage, short circuits, or other accidents due to overcharging or aging, the operator directly holds the device close to the battery pack, easily posing a significant safety hazard due to contact with corrosive liquids or high-voltage arcs.

[0004] As subway operation density increases, the frequency and accuracy requirements for battery testing also increase. The existing rigid structure of "single probe + manual handle" can no longer meet the needs of efficient and safe maintenance. Utility Model Content

[0005] In view of this, the present invention provides a battery testing device to solve the problem that in the prior art, the battery voltage is mainly tested one by one by hand using a measuring instrument, which is labor-intensive and prone to safety accidents.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A battery testing device includes a base, a robotic arm mounted on the base, and a monitoring device at one end of the robotic arm away from the base. The monitoring device includes a vertical plate at the end of the robotic arm, a mounting bracket on the vertical plate, and a vertically oriented mounting hole through the mounting bracket. A probe for detecting battery electrodes is detachably connected to the inside of the mounting hole via a connecting device.

[0008] In this technical solution, it should be noted that the device is based on a three-tiered linkage structure of "base-robotic arm-monitoring device," forming a complete system from basic support to precise detection. The base, as the fundamental load-bearing component, provides a stable mounting platform and is typically equipped with anti-slip pads or fixing bolt holes to ensure the device remains in a fixed position during detection and resists the reaction force generated by the movement of the robotic arm. The robotic arm adopts a multi-axis design, enabling flexible movement at multiple angles within space. Its end effector is fixedly connected to the vertical plate of the monitoring device via a flange or quick-release structure, allowing the monitoring device to be positioned directly above the battery electrodes. The monitoring device integrates the end effector mechanism for detection functions, including the vertical plate, mounting bracket, mounting holes, and probes. Detachable connections allow for quick probe replacement and maintenance, adapting to the testing needs of batteries of different specifications. The probes directly contact the battery electrodes, transmitting detection signals such as voltage and current. The probe heads are typically made of highly conductive metal materials (such as gold-plated copper alloy) with an anti-oxidation treatment. The principle of this invention is as follows: Operators use a robotic arm (or a control system) to move the monitoring device directly above the target battery electrode via multi-axis linkage. A vertical plate ensures the probe axis is aligned with the electrode center. The robotic arm drives the monitoring device downwards, and the probe contacts the electrode vertically through the mounting hole. Data is transmitted to an external system via wires. In summary, this invention replaces manual hand-held operation with a robotic arm, solving the high-intensity problems of "bending over and frequent movement" in traditional manual testing. It is particularly suitable for efficient testing of densely packed battery packs. The probe and mounting bracket are quickly assembled and disassembled via a connecting device, supporting "replacement upon damage," avoiding downtime of the entire device due to a single component failure, and conforming to the maintainability design principles of industrial equipment.

[0009] Preferably, the connecting device includes a tube body that passes through a mounting hole, the probe is mounted inside the mounting hole, and a first clamping plate and a second clamping plate are spaced apart on the side wall of the tube body. The first clamping plate is threadedly connected to the tube body, and the second clamping plate is fixedly connected to the tube body. The first clamping plate and the second clamping plate are located on both sides of the mounting hole, respectively.

[0010] In this technical solution, it should be noted that the connecting device adopts a detachable "tube body-double clamping plate" structure design. The core components include the tube body, the first clamping plate, and the second clamping plate: the tube body is a hollow cylindrical rod that passes through the mounting hole of the mounting bracket in the vertical direction. Its inner wall provides an axial positioning channel for the probe, ensuring that the axis of the probe is perpendicularly aligned with the center of the battery electrode after insertion; the outer wall of the tube body is fitted with the first clamping plate and the second clamping plate from top to bottom. The inner wall of the first clamping plate is provided with a thread that matches the outer wall of the tube body, allowing it to rotate and slide along the axial direction of the tube body. The second clamping plate is fixed to the lower (or upper) part of the tube body by interference fit or keyway. The outer diameter of both is larger than the diameter of the mounting hole and respectively fits the upper and lower surfaces (or lower and upper surfaces) of the mounting bracket. During assembly, the tube body is inserted into the mounting hole from below (or above) the mounting bracket. The second clamping plate is pre-fixed and supports the lower (or upper) surface of the mounting bracket. By rotating the first clamping plate clockwise, it moves upward (or downward) along the tube body's thread and presses against the upper (or lower) surface of the mounting bracket. The axial clamping force generated by the thread drive rigidly fixes the tube body and the mounting bracket, thus stably constraining the probe to the center position of the mounting hole. The core advantages of this structure are: the thread adjustment function of the first clamping plate can adapt to different mounting brackets with thicknesses of 10mm-30mm, avoiding customized processing; the double-clamping design significantly improves the tube body's pull-out resistance and torsional stiffness, preventing the probe from shifting laterally due to the force on the contact electrode during testing, ensuring stable contact resistance during voltage testing; during disassembly, simply rotate the first clamping plate in the opposite direction to loosen the clamping force, and the tube body and probe can be quickly pulled out, achieving "immediate replacement," which is especially suitable for the frequent probe wear scenarios in subway train battery testing. With the automated operation of the robotic arm, probe replacement can be completed within 30 seconds, greatly improving maintenance efficiency.

[0011] Preferably, the first clamping plate and the second clamping plate are located above and below the mounting hole, respectively.

[0012] In this technical solution, it should be noted that placing the first clamping plate above the mounting hole makes it easier for workers to pull the first clamping plate.

[0013] Preferably, the probe is connected to the inside of the tube via a bearing.

[0014] In this technical solution, it's important to note the structural design where the probe connects to the inner side of the tube via a bearing. The core of this design lies in the axial support bearing installed inside the tube, allowing the probe to slide flexibly relative to the tube while maintaining precise axial positioning. Specifically, a bearing mounting groove is located in the middle or lower end of the inner wall of the tube. A miniature bearing is fixedly installed within this groove. The inner ring of the bearing is interference-fitted with the outer wall of the probe tail or connected via a keyway, while the outer ring fits tightly against the mounting groove, forming a sliding friction pair between the probe and the tube. This structure allows the probe to slide freely up and down along the tube's axis when contacting the battery electrodes, adapting to the height difference of the electrode surfaces. The bearing material is typically corrosion-resistant stainless steel or engineering plastics (such as PTFE), with surface lubrication to reduce frictional resistance. A dustproof seal is added to the outside of the bearing to prevent electrolyte mist or dust from the battery testing environment from affecting rotational flexibility. In this solution, the bearing's support allows the probe to achieve stress-free contact through self-floating adjustment during rapid positioning driven by a robotic arm, significantly reducing collision wear between the probe and the electrodes and extending its service life.

[0015] Preferably, an infrared temperature probe is also provided on one side of the vertical plate.

[0016] In this technical solution, it should be noted that the infrared temperature probe is fixed to the outside of the vertical plate, with its detection end forming an angle of 30° to 60° with the plane of the vertical plate. This ensures that when the robotic arm drives the monitoring device to move, the probe can be aligned with the battery surface without obstruction, achieving non-contact temperature measurement. The infrared probe collects the surface temperature of the corresponding battery cell through a focusing lens.

[0017] Preferably, the robotic arm includes a rotating base, a first lever arm, a second lever arm, and a third lever arm that are sequentially hinged at their ends. The rotating base is rotatably connected to a base. The rotating base is driven by a first motor mounted on the base to rotate in a horizontal plane. The first lever arm is driven by a second motor mounted on the rotating base to rotate in a vertical plane. The second lever arm is driven by a third motor mounted on the first lever arm to rotate in a vertical plane. The third lever arm is driven by a fourth motor mounted on the second lever arm to rotate in a vertical plane. A vertical plate is mounted at the end of the third lever arm.

[0018] In this technical solution, it should be noted that the robotic arm adopts a multi-axis hinged structure design, consisting of a rotating base, a first lever arm, a second lever arm, and a third lever arm that are sequentially hinged at their ends. Each joint is driven by a motor to achieve multi-dimensional movement: the bottom of the rotating base is rotatably connected to the base via a slewing bearing, and is driven by a first motor (such as a servo motor) built into the base through gear transmission, allowing it to rotate freely 360° in the horizontal plane, providing the basic degree of freedom for horizontal orientation adjustment of the robotic arm; one end of the first lever arm is hinged to the top of the rotating base, and is driven by a second motor on the rotating base through a worm gear. Driven by a reducer, the device can perform pitch motion in a vertical plane, enabling coarse height adjustment of the monitoring device. The second arm, hinged to the end of the first arm, is driven by a third motor on the side of the first arm and also performs pitch motion in a vertical plane, working in conjunction with the first arm to achieve fine height adjustment and horizontal reach control of the monitoring device. The third arm, hinged to the end of the second arm, is driven by a fourth motor at the end of the second arm and also performs pitch motion in a vertical plane, precisely adjusting the vertical attitude of the monitoring device to ensure that the vertical plate installed at its end remains vertical and that the probe axis is strictly aligned with the battery electrodes. This structure, designed for the confined space and densely packed battery packs in subway maintenance rooms, combines horizontal rotation, dual-arm pitch, and end-effector attitude adjustment to enable comprehensive, blind-spot-free inspection of each battery layer within a certain range, solving the operational challenges of manual bending and leaning.

[0019] Preferably, the device also includes a placement rack located on one side of the base, the placement rack having a placement frame at its top for holding the battery. The bottom of the placement rack is rotatably connected to casters.

[0020] In this technical solution, it should be noted that the placement frame is welded from high-strength steel, and its bottom is rotatably connected to four omnidirectional casters (two with brakes) via bearing seats. Each caster has a load-bearing capacity of ≥50kg, allowing the placement frame to be easily moved across the flat ground of the maintenance room. When the brakes are locked, it can withstand the lateral force (≤100N) generated during the robotic arm's inspection process, ensuring the battery's stable position. The placement frame at the top is adapted to the size of the battery trolley.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, a robotic arm replaces manual hand-held operation, solving the high-intensity problem of "bending over and frequent movement" in traditional manual testing, and is especially suitable for efficient testing of densely packed battery packs. The probe and mounting bracket are quickly assembled and disassembled through a connecting device, supporting "replacement upon damage" and avoiding downtime of the entire device due to the failure of a single component.

[0023] 2. In this utility model, the double-clamp design significantly improves the tube's resistance to pull-out and torsional stiffness, preventing the probe from shifting laterally due to the force on the contact electrode during testing, and ensuring stable contact resistance during voltage testing. During disassembly, only the first clamp needs to be rotated in the opposite direction to loosen the clamping force, and the tube and probe can be quickly pulled out, achieving "immediate replacement upon damage". It is especially suitable for the frequent probe wear scenarios in subway train battery testing. With the automated operation of the robotic arm, probe replacement can be completed within 30 seconds, greatly improving maintenance efficiency.

[0024] 3. In this utility model, the supporting function of the bearing enables the probe to achieve stress-free contact through its own floating adjustment when it is quickly positioned under the drive of the robotic arm, which significantly reduces the collision and wear between the probe and the electrode and extends its service life.

[0025] 4. In this utility model, the robotic arm, through the combination of "horizontal rotation + double lever arm pitch + end-effector posture adjustment", can detect each layer of batteries without blind spots within a certain range, solving the problem of manual bending and leaning. Attached Figure Description

[0026] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the monitoring device of this utility model;

[0029] Figure 3 This is a three-dimensional structural diagram of the mounting bracket of this utility model;

[0030] Figure 4 This is a cross-sectional structural diagram of part of the mounting bracket and tube body of this utility model;

[0031] Among them: 1-robotic arm, 2-base, 3-rotating seat, 4-first lever arm, 5-second lever arm, 6-third lever arm, 7-placement frame, 8-placement box, 9-battery, 10-roller, 11-monitoring device, 12-vertical plate, 13-mounting frame, 14-probe, 15-tube body, 16-first clamping plate, 17-second clamping plate, 18-bearing. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0038] Example

[0039] like Figures 1-4As shown in the figure, this utility model discloses a battery 9 testing device, including a base 2, a robotic arm 1 on the base 2, and a monitoring device 11 at the end of the robotic arm 1 away from the base 2; the monitoring device 11 includes a vertical plate 12 at the end of the robotic arm 1, a mounting bracket 13 on the vertical plate 12, and a through mounting hole on the mounting bracket 13, the mounting hole being vertically arranged, and a probe 14 for detecting the electrodes of the battery 9 being detachably connected to the inside of the mounting hole via a connecting device. It should be noted that this device is based on a three-level linkage structure of "base 2-robotic arm 1-monitoring device 11", forming a complete system from basic support to precise detection: the base 2, as the basic load-bearing component of the device, provides a stable mounting platform, and is usually equipped with anti-slip pads or fixing bolt holes to ensure that the device remains in a fixed position during the testing process and resists the reaction force generated when the robotic arm 1 moves. The robotic arm 1 adopts a multi-axis design, enabling flexible multi-angle movement within space. Its end effector is fixedly connected to the vertical plate 12 of the monitoring device 11 via a flange or quick-release structure, allowing it to position the monitoring device 11 directly above the electrodes of the battery 9. The monitoring device 11 integrates a detection-functional end effector, including the vertical plate 12, mounting bracket 13, mounting holes, and probes 14. The probes 14 are detachably connected, allowing for quick replacement and maintenance, adapting to the testing needs of batteries 9 of different specifications. The probes 14 directly contact the electrodes of the battery 9, transmitting detection signals such as voltage and current. Their heads are typically made of a highly conductive metal material (such as gold-plated copper alloy) with an anti-oxidation treatment. The principle of this invention is as follows: Operators operate the robotic arm 1 (or it can be automatically controlled by a control system) to move the monitoring device 11 directly above the electrodes of the target battery 9 via multi-axis linkage. The vertical plate 12 ensures that the axis of the probes 14 is aligned with the center of the electrodes. The robotic arm 1 drives the monitoring device 11 downwards, and the probes 14 contact the electrodes vertically through the mounting holes. The probes 14 transmit data to an external system via wires. In summary, this utility model replaces manual hand-held operation with a robotic arm 1, solving the high-intensity problem of "bending over and frequent movement" in traditional manual inspection, and is especially suitable for efficient inspection of densely arranged battery packs (9 groups). The probe 14 and the mounting bracket 13 are quickly assembled and disassembled through a connecting device, supporting "replacement upon damage," avoiding downtime of the entire device due to failure of a single component, and conforming to the maintenance-friendly design principle of industrial equipment.

[0040] like Figure 3 and Figure 4As shown, in this embodiment, the connecting device includes a tube body 15, which passes through a mounting hole. The probe 14 is installed inside the mounting hole. A first clamping plate 16 and a second clamping plate 17 are spaced apart on the side wall of the tube body 15. The first clamping plate 16 is threadedly connected to the tube body 15, and the second clamping plate 17 is fixedly connected to the tube body 15. The first clamping plate 16 and the second clamping plate 17 are located on both sides of the mounting hole. It should be noted that the connecting device adopts a detachable structure design of "tube body 15-double clamping plate". The core components include tube body 15, first clamping plate 16 and second clamping plate 17: tube body 15 is a hollow cylindrical rod that passes through the mounting hole of mounting bracket 13 in the vertical direction. Its inner wall provides an axial positioning channel for probe 14, ensuring that the axis of probe 14 is perpendicularly aligned with the center of the electrode of battery 9 after insertion; the outer wall of tube body 15 is fitted with first clamping plate 16 and second clamping plate 17 from top to bottom. The inner wall of first clamping plate 16 is provided with threads that match the outer wall of tube body 15, and can rotate and slide along the axial direction of tube body 15. Second clamping plate 17 is fixed to the lower (or upper) part of tube body 15 by interference fit or keyway. The outer diameter of both is larger than the diameter of the mounting hole and respectively fits the upper and lower surfaces (or lower and upper surfaces) of mounting bracket 13. During assembly, the tube body 15 is inserted into the mounting hole from below (or above) the mounting bracket 13. The second clamping plate 17 is pre-fixed and supports the lower (or upper) surface of the mounting bracket 13. By rotating the first clamping plate 16 clockwise, it moves upward (or downward) along the thread of the tube body 15 and presses against the upper (or lower) surface of the mounting bracket 13. The axial clamping force generated by the thread drive rigidly fixes the tube body 15 and the mounting bracket 13, thereby stably constraining the probe 14 to the center position of the mounting hole. The core advantages of this structure are: the threaded adjustment function of the first clamping plate 16 can adapt to different mounting brackets 13 with thicknesses ranging from 10mm to 30mm, avoiding customized processing; the double-clamping design significantly improves the tube body 15's pull-out resistance and torsional stiffness, preventing the probe 14 from shifting laterally due to the force on the contact electrode during testing, ensuring stable contact resistance during voltage testing; during disassembly, simply rotate the first clamping plate 16 in the opposite direction to loosen the clamping force, and the tube body 15 and probe 14 can be quickly pulled out, achieving "immediate replacement upon damage". It is especially suitable for the frequent probe 14 wear scenarios in the testing of subway train batteries 9. With the automated operation of the robotic arm 1, the probe 14 can be replaced within 30 seconds, greatly improving maintenance efficiency.

[0041] like Figure 3 and Figure 4 As shown, in this embodiment, the first clamping plate 16 and the second clamping plate 17 are located above and below the mounting hole, respectively. It should be noted that placing the first clamping plate 16 above the mounting hole facilitates the operator's manipulation of the first clamping plate 16.

[0042] like Figure 3 and Figure 4As shown, in this embodiment, the probe 14 is connected to the inner side of the tube body 15 via a bearing 18. It should be noted that the core of this structural design, where the probe 14 is connected to the inner side of the tube body 15 via a bearing 18, lies in the axial support bearing 18 installed inside the tube body 15. This allows the probe 14 to slide flexibly relative to the tube body 15 while maintaining precise axial positioning. Specifically, a bearing 18 mounting groove is provided in the middle or lower end of the inner wall of the tube body 15. A miniature bearing 18 is fixedly installed in the groove. The inner ring of the bearing 18 is interference-fitted with the outer wall of the probe 14's tail or connected via a keyway, while the outer ring is tightly fitted to the mounting groove of the tube body 15, forming a sliding friction pair between the probe 14 and the tube body 15. This structure allows the probe 14 to slide freely up and down along the axis of the tube 15 when contacting the electrode of the battery 9, adapting to the height difference of the electrode surface. The bearing 18 is typically made of corrosion-resistant stainless steel or engineering plastic (such as polytetrafluoroethylene), and its surface is lubricated to reduce frictional resistance. A dustproof sealing ring is added to the outside of the bearing 18 to prevent electrolyte mist or dust in the battery 9 detection environment from entering and affecting the rotational flexibility. In this design, the supporting role of the bearing 18 enables the probe 14 to achieve stress-free contact through its own floating adjustment when quickly positioned under the drive of the robotic arm 1, significantly reducing the collision and wear between the probe 14 and the electrode and extending its service life.

[0043] like Figure 2 As shown, in this embodiment, an infrared temperature probe is also provided on one side of the vertical plate 12. It should be noted that the infrared temperature probe is fixed to the outside of the vertical plate 12, with its probe end forming an angle of 30° to 60° with the plane of the vertical plate 12. This ensures that when the robotic arm 1 drives the monitoring device 11 to move, the probe can be aligned with the surface of the battery 9 without obstruction, achieving non-contact temperature measurement. The infrared probe collects the surface temperature of the corresponding individual battery cell 9 through a focusing lens.

[0044] like Figure 1As shown, in this embodiment, the robotic arm 1 includes a rotating base 3, a first lever arm 4, a second lever arm 5, and a third lever arm 6, which are sequentially hinged at their ends. The rotating base 3 is rotatably connected to the base 2. The rotating base 3 is driven by a first motor mounted on the base 2 to rotate in a horizontal plane. The first lever arm 4 is driven by a second motor mounted on the rotating base 3 to rotate in a vertical plane. The second lever arm 5 is driven by a third motor mounted on the first lever arm 4 to rotate in a vertical plane. The third lever arm 6 is driven by a fourth motor mounted on the second lever arm 5 to rotate in a vertical plane. The vertical plate 12 is mounted on the end of the third lever arm 6. It should be noted that the robotic arm 1 adopts a multi-axis hinged structure design, consisting of a rotating base 3, a first lever arm 4, a second lever arm 5, and a third lever arm 6, which are sequentially hinged at their ends. Each joint is driven by a motor to achieve multi-dimensional movement: the bottom of the rotating base 3 is rotatably connected to the base 2 via a slewing bearing, and is driven by a first motor (such as a servo motor) built into the base 2 through gear transmission, allowing it to rotate freely 360° in the horizontal plane, providing the basic degree of freedom for horizontal orientation adjustment of the robotic arm 1; one end of the first lever arm 4 is hinged to the top of the rotating base 3, and is driven by a second motor on the rotating base 3 through a worm gear reducer, allowing it to... The first arm 11 is coarsely adjusted in height by pitching in a vertical plane. The second arm 5 is hinged to the end of the first arm 4 and driven by a third motor on the side of the first arm 4. It also pitches in a vertical plane, cooperating with the first arm 4 to finely adjust the height of the monitoring device 11 and control its horizontal extension distance. The third arm 6 is hinged to the end of the second arm 5 and driven by a fourth motor at the end of the second arm 5. It also pitches in a vertical plane to precisely adjust the vertical attitude of the monitoring device 11, ensuring that the vertical plate 12 installed at its end remains vertical and that the axis of the probe 14 is strictly aligned with the electrodes of the battery 9. This structure, designed for the confined space of the subway maintenance room and the dense arrangement of the 9 battery packs, uses a combination of "horizontal rotation + double arm pitch + end attitude adjustment" to detect each layer of batteries 9 without blind spots within a certain range, solving the problem of manual bending and leaning.

[0045] like Figure 1 As shown, in this embodiment, a placement rack 7 located on one side of the base 2 is also included. The placement rack 7 has a placement frame 8 on its top for placing the battery 9. Rollers 10 are rotatably connected to the bottom of the placement rack 7. It should be noted that the placement rack 7 is welded from high-strength steel, and four universal rollers 10 (two with brakes) are rotatably connected to its bottom via bearing seats 18. Each roller 10 has a load-bearing capacity ≥50kg, allowing it to easily move the placement rack 7 across the flat ground of the maintenance room. When the brakes are locked, it can withstand the lateral force (≤100N) generated during the inspection process by the robotic arm 1, ensuring the battery 9 remains in a stable position. The placement frame 8 on the top is adapted to the size of the battery 9 vehicle.

[0046] The working process of this battery 9 testing device is as follows: First, the operator pushes the placement rack 7 with rollers 10 at the bottom to move the placement frame 8 containing the battery 9 to the designated position next to the base 2. The placement rack 7 is locked by the braking device to ensure that it remains stable during the testing process. Then, the robotic arm 1 starts to work. The first motor on the base 2 drives the rotating seat 3 to rotate 360° in the horizontal plane, adjusting the orientation of the robotic arm 1 to align with the target battery 9 row. The second motor on the rotating seat 3 and the third motor on the side of the first lever arm 4 work together to drive the first lever arm 4 and the second lever arm 5 to pitch in the vertical plane, realizing the coarse and fine adjustment of the height of the monitoring device 11, and moving it directly above the electrode of the target battery 9. Then, the fourth motor at the end of the second lever arm 5 drives the third lever arm 6 to make fine adjustments, ensuring that the vertical plate 12 installed at the end of the third lever arm 6 remains vertical, so that the axis of the probe 14 is strictly aligned with the center of the electrode.

[0047] After positioning, the robotic arm 1 drives the monitoring device 11 to descend. The probe 14 slides freely along the axis through the bearing 18 inside the tube 15, adapting to the height difference of the electrode surface, and contacts the battery 9 electrode in a stress-free state. The conductive metal material at the head transmits the voltage signal to the external system. At the same time, the infrared temperature probe on one side of the vertical plate 12 is aligned with the surface of the battery 9 at an angle of 30° to 60°, and collects surface temperature data non-contactly through a focusing lens, realizing synchronous detection of voltage and temperature. During the detection process, the first clamping plate 16 (upper clamping plate) and the second clamping plate 17 (lower clamping plate) of the connecting device use axial clamping force generated by threaded transmission to rigidly fix the tube 15 to the mounting bracket 13, ensuring that the probe 14 has no lateral displacement and the contact resistance is stable.

[0048] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery testing device, characterized by, Includes a base (2), on which a robotic arm (1) is provided, and a monitoring device (11) is provided at the end of the robotic arm (1) away from the base (2); The monitoring device (11) includes a vertical plate (12) at the end of the robotic arm (1). The vertical plate (12) is provided with a mounting bracket (13). The mounting bracket (13) has a through mounting hole. The mounting hole is vertically arranged. A probe (14) for detecting the electrode of the battery (9) is detachably connected to the inside of the mounting hole through a connecting device.

2. A battery testing device according to claim 1, wherein The connecting device includes a tube body (15) that passes through a mounting hole. The probe (14) is installed inside the mounting hole. A first clamping plate (16) and a second clamping plate (17) are spaced apart on the side wall of the tube body (15). The first clamping plate (16) is threaded to the tube body (15), and the second clamping plate (17) is fixedly connected to the tube body (15). The first clamping plate (16) and the second clamping plate (17) are located on both sides of the mounting hole, respectively.

3. The battery testing device according to claim 2, characterized in that, The first clamping plate (16) and the second clamping plate (17) are located above and below the mounting hole, respectively.

4. The battery testing device according to claim 2, characterized in that, The probe (14) is connected to the inside of the tube body (15) via a bearing (18).

5. A battery testing device according to claim 1, characterized in that, An infrared temperature probe is also provided on one side of the vertical plate (12).

6. The battery testing device according to claim 1, characterized in that, The robotic arm (1) includes a rotating seat (3), a first lever arm (4), a second lever arm (5), and a third lever arm (6) that are sequentially hinged at their ends. The rotating seat (3) is rotatably connected to the base (2). The rotating seat (3) is driven by a first motor mounted on the base (2) to rotate on a horizontal plane. The first lever arm (4) is driven by a second motor mounted on the rotating seat (3) to rotate on a vertical plane. The second lever arm (5) is driven by a third motor mounted on the first lever arm (4) to rotate on a vertical plane. The third lever arm (6) is driven by a fourth motor mounted on the second lever arm (5) to rotate on a vertical plane. The vertical plate (12) is mounted on the end of the third lever arm (6).

7. A battery testing device according to claim 1, characterized in that, It also includes a placement rack (7) located on one side of the base (2), the placement rack (7) having a placement frame (8) on top for placing the battery (9).

8. A battery testing device according to claim 7, characterized in that, The bottom of the placement rack (7) is rotatably connected to a roller (10).

Images