Battery reserve detection line and detection method

Abstract

This invention relates to the field of battery testing technology, specifically disclosing a battery capacity testing line, including a conveyor line and a tray mechanism. The tray mechanism is placed on the conveyor line and can hold multiple battery cells. It also includes a battery capacity testing mechanism, a lifting mechanism, a loading robot, and a unloading robot. The battery capacity testing mechanism is located above the tray mechanism. The conveyor line consists of two parallel synchronous conveyor lines, with the lifting mechanism positioned between them. The lifting mechanism lifts the tray mechanism upwards to detach it from the conveyor lines. The loading robot places the battery cells onto the tray mechanism, and the unloading robot removes the battery cells from the tray mechanism. A testing method is applied to the battery capacity testing line, requiring the tray mechanism to be lifted upwards to detach from the conveyor line during testing. This solution addresses the technical problems of low efficiency and poor versatility in existing battery capacity testing technologies.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, specifically to a battery capacity testing line and testing method. Background Technology

[0002] With the rapid development of the new energy industry, lithium-ion batteries are increasingly widely used in consumer electronics, electric vehicles, energy storage systems, and other fields. During the battery production process, rigorous performance testing is required, among which battery capacity testing is a crucial step in ensuring battery quality. Battery capacity testing is typically performed at the testing station on the battery production line. Probes are used to contact the positive and negative terminals of the battery to measure parameters such as voltage, internal resistance, and capacity to determine whether the battery is qualified.

[0003] In automated battery production, to improve testing efficiency, conveyor lines are typically used to transport batteries, and tray mechanisms are installed at the testing stations to hold and position them. However, battery quantity testing differs from conventional polarity and insulation testing; the process is time-consuming, typically requiring about one hour to complete the quantity testing of a single batch of batteries. If the conveyor line stops during this extended testing period, the efficiency of the entire production line will be significantly reduced. Therefore, how to ensure that the normal transport of batteries during quantity testing is not disrupted is a technical challenge faced by those skilled in the art.

[0004] Existing technologies already include some equipment related to battery testing. For example, patent publication number CN221326724U discloses a battery cell feeding and testing line for energy storage modules. This equipment includes a conveyor line, a rising polarity test probe, and a rising positioner. Multiple cell holders are arranged on the conveyor line to accommodate and position the cells. The rising polarity test probe is used to test the continuity and polarity orientation of the cells in the cell holders. However, this technical solution has the following shortcomings: First, it only tests the continuity and polarity orientation of the cells, and the testing time is short, not involving long-term testing of battery capacity. Therefore, it does not consider the impact of long-term testing on production line efficiency. Second, the cell holders in this solution are fixed structures, only compatible with one type of cell. When the cell specification changes, the entire cell holder needs to be replaced, resulting in poor versatility.

[0005] For example, patent publication number CN212321799U discloses a battery module testing device. This device includes a connecting plate, a slide rail, a first probe detection mechanism, and a second probe detection mechanism. The first and second probe detection mechanisms are arranged opposite to each other and slidably connected to the slide rail. By adjusting the positions of the first and second adjustment plates, the distance between the two sets of probes can be adjusted. However, this technical solution has the following shortcomings: First, this device is also used for short-term insulation testing and does not involve long-term testing of battery capacity. The adjustment of the probe spacing requires manual operation, and the adjustment position is determined by observing the scale of the adjustment ruler. The adjustment accuracy is greatly affected by human factors, and the adjustment process is time-consuming, making it difficult to adapt to the needs of rapid changeover on the production line. Second, this device lacks a tray mechanism, and the battery modules need to be placed manually, making it impossible to effectively connect with automated conveyor lines. Summary of the Invention

[0006] The present invention aims to provide a battery capacity testing line to solve the technical problems of low efficiency and poor versatility in existing battery capacity testing technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A battery capacity testing line includes a conveyor line and a tray mechanism. The conveyor line is provided with a loading station, a testing station and a unloading station in sequence along the conveying direction. There are multiple tray mechanisms, which are used to place on the conveyor line. Each tray mechanism can hold multiple battery cells. The line is characterized by further including a battery capacity testing mechanism, a lifting mechanism, a loading robot and an unloading robot. The battery capacity testing mechanism is located at the testing station, above the tray mechanism; The conveyor line consists of two parallel synchronous conveyor lines with a gap between them. The lifting mechanism is located between the two synchronous conveyor lines. The lifting mechanism lifts the pallet mechanism located at the inspection station upwards to remove it from the conveyor line. The loading robot is used to place the battery cells onto the tray mechanism; The unloading robot is used to remove the battery cells from the tray mechanism.

[0008] Preferably, the battery capacity detection mechanism includes a lift and a probe spacing adjuster; the probe spacing adjuster includes a bidirectional output driver with two output terminals; each of the two output terminals is equipped with multiple probes, and the bidirectional output driver drives the two output terminals to move closer or further apart, and the probes of the two output terminals form a probe group; the lift is used to drive the probe spacing adjuster to move up and down.

[0009] Preferably, the probe includes a probe base, a detection head, and an elastic element. The probe base is fixedly connected to the output end of the bidirectional output driver, the detection head is vertically slidably connected to the probe base, one end of the elastic element abuts against the detection head, and the other end abuts against the probe base or the output end.

[0010] Preferably, the tray mechanism includes a tray body, a plurality of front and rear clamps and a left and right clamp; the plurality of front and rear clamps clamp a single battery cell from the front and rear sides respectively; the left and right clamps include a left clamp and a right clamp, the left clamp and the right clamp are close to each other to center all the battery cells on the tray body toward the tray body.

[0011] Preferably, the lifting mechanism includes a lifting driver and a lifting plate, a positioning post is fixed on the lifting plate, and a positioning hole that cooperates with the positioning post is provided on the tray body.

[0012] Preferably, it also includes multiple blocking mechanisms and multiple sensors. The loading station, the detection station and the unloading station are respectively equipped with blocking mechanisms and sensors. The sensors correspond one-to-one with the blocking mechanisms. The sensors detect whether the pallet mechanism has reached the corresponding station. The blocking mechanism includes a blocking driver and a blocking component. The blocking component is controlled by the blocking driver to block the pallet mechanism from being conveyed on the conveyor line.

[0013] Preferably, the blocking member is provided with rollers that abut against the front side of the pallet body in the conveying direction.

[0014] Preferably, the device further includes a controller, which is electrically connected to the sensor and the blocking mechanism. After the sensor detects the tray mechanism, the controller controls the blocking member of the blocking mechanism to block the tray mechanism.

[0015] Preferably, it also includes a pre-inspection labeling machine and a post-inspection labeling machine; the pre-inspection labeling machine is set between the loading station and the inspection station, and is used to affix an identification label to each battery cell; The post-inspection labeling machine is located between the inspection station and the unloading station. The post-inspection labeling machine is used to affix a capacity label to each battery cell.

[0016] Preferably, there are two conveyor lines, which are parallel and share a loading robot and a unloading robot.

[0017] The present invention also provides a battery capacity detection method, applied to the aforementioned battery capacity detection line, and includes the following steps: Step S1: The loading robot places the battery cells onto the tray mechanism located at the loading station; Step S2: The conveyor line transports the tray mechanism carrying the battery cells to the testing station; Step S3: When the pallet mechanism arrives at the inspection station, the lifting mechanism lifts the pallet mechanism to remove it from the conveyor line; Step S4: The battery capacity detection mechanism descends, and the probe contacts the terminal of the battery cell to detect the battery capacity. Step S5: After the test is completed, the battery capacity detection mechanism rises, the lifting mechanism descends, and the tray mechanism falls back onto the conveyor line; In step S6, the conveyor line transports the tray mechanism carrying the battery cells to the unloading station, where the unloading robot removes the battery cells from the tray mechanism.

[0018] Preferably, between step S2 and step S3, there is also a pre-inspection labeling step: the pre-inspection labeling machine affixes an identification label to each battery cell; Between steps S5 and S6, there is also a post-test labeling step: the post-test labeling machine affixes a test capacity label to each cell based on the test results.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. Parallel operation of testing and conveying significantly improves production efficiency: This invention sets up two parallel synchronous conveyor lines and installs a lifting mechanism in the gap between the two lines. When the pallet mechanism reaches the testing station, the lifting mechanism lifts the pallet mechanism upwards, causing it to detach from the conveyor line. This ensures that the battery capacity testing process (approximately 1 hour) does not interfere with the conveyor line's conveying operation. While the testing station is conducting long-term testing, the conveyor line can continue to transport other pallet mechanisms, realizing parallel operation of loading, testing, and unloading, significantly improving the overall production line efficiency.

[0020] 2. Compatible with multiple battery specifications, convenient for model changeover: The battery capacity testing mechanism of this invention adopts an adjustable probe spacing design. A bidirectional output driver moves two sets of probes closer or further apart, adapting to changes in the terminal spacing of different battery specifications. When switching battery models on the production line, only the probe spacing needs to be adjusted; there is no need to replace the battery capacity testing mechanism, resulting in short changeover time and convenient operation.

[0021] 3. The probe has a buffer protection function, ensuring stable and reliable detection: The probe of this invention includes a probe holder, a detection head, and an elastic element. The detection head is vertically slidably connected to the probe holder, and the elastic element provides buffering force. When the probe descends to contact the battery terminal, the detection head contacts the terminal first, and then the elastic element is compressed, achieving flexible contact. This avoids damage to the probe and battery terminal from rigid impacts and ensures the stability of contact during long-term detection.

[0022] 4. Precise positioning and high detection accuracy: This invention uses a blocking mechanism for coarse positioning of the tray mechanism, and achieves precise positioning by cooperating between the positioning pins on the lifting plate and the positioning holes on the tray mechanism. This ensures that the tray mechanism is accurately positioned after being lifted, facilitating accurate contact of the probe with the cell terminals. Furthermore, detection is performed after the tray mechanism is detached from the conveyor line, avoiding the impact of conveyor line vibration on detection accuracy.

[0023] 5. Full-process traceability and quality control: This invention sets up pre-inspection labeling machines and post-inspection labeling machines before and after the inspection station. Before inspection, each cell is labeled with an identification tag to achieve cell identification traceability. After inspection, a capacity label is affixed according to the inspection results, which facilitates subsequent processes to determine whether the cells are qualified and to sort them by capacity, forming a complete inspection traceability chain.

[0024] 6. High efficiency in loading and unloading, and compact layout: This invention adopts a layout with two parallel conveyor lines sharing the loading and unloading robot, which reduces the number of robots, lowers equipment costs, and improves loading and unloading efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0026] Figure 2 for Figure 1 Top view.

[0027] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0028] Figure 4 This is a three-dimensional structural diagram of a single conveyor line in Embodiment 1 of the present invention, showing only the battery capacity detection mechanism, tray mechanism, etc.

[0029] Figure 5 for Figure 4 Top view.

[0030] Figure 6 for Figure 4 A partial structural diagram.

[0031] Figure 7 This is a three-dimensional structural diagram of the battery storage detection mechanism in Embodiment 1 of the present invention.

[0032] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure after rotation.

[0033] Figure 9 for Figure 7 The main view.

[0034] Figure 10 This is a schematic diagram of the three-dimensional structure of the probe in an embodiment of the present invention.

[0035] Figure 11 for Figure 10 The main view.

[0036] Figure 12 for Figure 6 The diagram shows only a single three-dimensional structural schematic of the battery capacity detection mechanism, lifting mechanism, and blocking mechanism.

[0037] Figure 13 for Figure 12 The main view.

[0038] Figure 14 Figure 12 The image only shows a three-dimensional structural diagram of the battery cells placed on the tray mechanism.

[0039] Figure 15 for Figure 14 A three-dimensional structural diagram of the battery cell after it has been removed.

[0040] Figure 16 for Figure 15 Top view.

[0041] Figure 17 for Figure 12 A three-dimensional structural diagram of the central lifting mechanism.

[0042] The reference numerals in the accompanying drawings include: battery capacity detection mechanism 100, lifting cylinder 110, guide rod 120, mounting base 130, lifting plate 140, bidirectional output driver 150, bidirectional lead screw 160, first mounting plate 170, second mounting plate 180, probe 190, probe holder 191, detection head 192, spring 193, tray mechanism 10, tray body 11, bottom plate 111, support plate 112, top plate 113, through groove 1131, front and rear clamps 12, front clamping plate 121, and rear clamping plate. 122. Front and rear drivers 123. Left and right clamps 13. Left clamping plate 131. Right clamping plate 132. Left and right drivers 133. Conveyor line 20. Synchronous conveyor line 21. Synchronous conveyor line 22. Guide plate 201. Support roller 202. Lifting mechanism 30. Lifting cylinder 31. Lifting plate 32. Positioning column 321. Blocking mechanism 40. Blocking cylinder 41. Blocking component 42. Roller 421. Sensor 43. Loading robot 50. Unloading robot 60. Pre-inspection labeling machine 70. Post-inspection labeling machine 80. Frame 1000. Detailed Implementation

[0043] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figures 1 to 16 As shown.

[0044] Combination Figure 1A battery capacity testing line includes a battery capacity testing mechanism 100, a tray mechanism 10, a conveyor line 20, a lifting mechanism 30, a blocking mechanism 40, a loading robot 50, a unloading robot 60, a pre-inspection labeling machine 70, and a post-inspection labeling machine 80.

[0045] In this embodiment, there are two conveyor lines 20. Each of the two conveyor lines 20 is provided with a loading station, a detection station, and a unloading station in sequence along the conveying direction. The two conveyor lines 20 share a loading robot 50 and an unloading robot 60 at the loading and unloading stations to improve the utilization rate of the robots.

[0046] Multiple tray mechanisms 10 are provided and can be placed on the conveyor line 20. Each tray mechanism 10 can hold multiple battery cells. A battery capacity detection mechanism 100 is located above the detection station and above the tray mechanism 10. In this embodiment, each detection station on the conveyor line 20 has two battery capacity detection mechanisms 100, which are arranged along the conveying direction of the conveyor line 20.

[0047] Each conveyor line 20 consists of two parallel synchronous conveyor lines (21, 22), with a gap between them. A lifting mechanism 30 and a blocking mechanism 40 are positioned within the gap between the two synchronous conveyor lines (21, 22). The lifting mechanism 30 corresponds to a detection station. The lifting mechanism 30 is used to lift the pallet mechanism 10 upwards to detach it from the conveyor line 20. The blocking mechanism 40 is used to block the pallet mechanism 10 on the conveyor line 20, stopping the pallet mechanism 10 at its corresponding station, allowing it to continue moving forward.

[0048] A loading robot 50 is positioned next to the loading station to place battery cells onto the tray mechanism 10. A unloading robot 60 is positioned next to the unloading station to remove inspected battery cells from the tray mechanism 10. The loading robot 50 and the unloading robot 60 are located between two parallel conveyor lines 20 to facilitate the sharing of the loading robot 50 and the unloading robot 60 between the two conveyor lines 20.

[0049] In one embodiment, both the loading robot 50 and the unloading robot 60 are robots. The end effectors of both the loading robot 50 and the unloading robot 60 are equipped with image acquisition units. The image acquisition units are connected to the vision control system. The vision control system is connected to the loading robot 50 and the unloading robot 60 to ensure that the loading robot 50 and the unloading robot 60 can accurately pick up and discharge the core.

[0050] The pre-inspection labeling machine 70 is set between the loading station and the inspection station. The pre-inspection labeling machine 70 is used to affix an identification label to each battery cell. The post-inspection labeling machine 80 is located between the inspection station and the unloading station. The post-inspection labeling machine 80 is used to affix a capacity label to each battery cell.

[0051] The following is a more detailed description of the improvements to the battery capacity detection mechanism 100, the tray mechanism 10, the conveyor line 20, the lifting mechanism 30, and the blocking mechanism 40: I. Battery Capacity Testing Institutions (100): The battery capacity testing mechanism 100 includes a lifter and a probe spacing adjuster, the lifter being used to control the probe spacing adjuster to move up and down.

[0052] Specifically, the lifting device includes a lifting cylinder 110, a guide rod 120, and a mounting base 130. The lifting cylinder 110 is fixed to the mounting base 130, which is fixedly mounted on the frame. A lifting plate 140 is fixed to the output end of the lifting device; that is, the output rod of the lifting cylinder 110 is mounted on the lifting plate 140, and a probe spacing adjuster is fixed on the lifting plate 140. One end of the guide rod 120 is fixed to the lifting plate 140, and the other end slides through the mounting base 130. When the lifting cylinder 110 is activated, the lifting plate 140 at its output end moves up and down, and the guide rod 120 provides guidance, ensuring the smoothness and linearity of the lifting movement.

[0053] The probe spacing adjuster includes a bidirectional output driver 150, which has two output terminals. Each output terminal is equipped with multiple probes 190, forming multiple groups of probes 190. By controlling the output terminals of the bidirectional output driver 150, the distance between the probes 190 on the two output terminals can be adjusted, enabling the multiple groups of probes 190 to synchronously move closer or further apart.

[0054] Specifically, the bidirectional output driver 150 includes a bidirectional lead screw 160, a first slider, a second slider, and a drive motor. The bidirectional lead screw 160 has a first threaded section and a second threaded section with opposite directions of rotation. The first slider is threaded to the first threaded section, and the second slider is threaded to the second threaded section. A first mounting plate 170 is fixedly connected to the first slider, and a second mounting plate 180 is fixedly connected to the second slider. The drive motor is connected to the bidirectional lead screw 160 for transmission. The drive motor drives the bidirectional lead screw 160 to rotate. After the bidirectional lead screw 160 rotates, it drives the first mounting plate 170 and the second mounting plate 180 to move synchronously towards each other or synchronously away from each other along the axial direction of the bidirectional lead screw 160. The distance between the probe 190 mounted on the first mounting plate 170 and the corresponding probe 190 mounted on the second mounting plate 180 also changes accordingly, realizing the adjustment of the probe 190 spacing.

[0055] Multiple probes 190 are mounted on both the first mounting plate 170 and the second mounting plate 180. The probes 190 on each mounting plate are arranged at intervals along a direction perpendicular to the axis of the bidirectional lead screw 160 (i.e., parallel to the conveying direction of the conveyor line in the following embodiment). In this embodiment, eight probes 190 are mounted on each of the first mounting plate 170 and the second mounting plate 180, and each battery capacity detection mechanism 100 is used to simultaneously detect eight battery cells.

[0056] By setting up a bidirectional output driver 150, each of its two output terminals has multiple probes 190. By controlling the bidirectional output driver 150, the distance between the two sets of probes 190 can be precisely adjusted, which can adapt to the changes in the electrode spacing of batteries of different specifications. There is no need to replace the probe 190 module, which improves the versatility of the testing line and the changeover efficiency of the production line.

[0057] In one embodiment, combined with Figures 10 to 11 The probe 190 includes a probe base 191, a detection head 192, and an elastic element 193. The probe base 191 is fixedly connected to a first mounting plate 170 or a second mounting plate 180. The detection head 192 is vertically slidably connected to the probe base 191. In this embodiment, the elastic element is a spring 193, which is sleeved on the detection head 192. One end of the spring 193 abuts against the detection head 192, and the other end abuts against the probe base 191. When the detection head 192 is not in contact with the battery terminal, the spring 193 is in its natural state, and the lower end of the detection head 192 extends a certain length beyond the probe base 191. When the lifter drives the probe spacing adjuster to descend, after the detection head 192 contacts the battery terminal, as the probe spacing adjuster continues to descend, the detection head 192 slides upward relative to the probe base 191, and the spring 193 is further compressed. The detection head 192 applies a flexible contact pressure to the battery terminal, avoiding damage caused by rigid impact.

[0058] II. Pallet Mechanism 10: The pallet mechanism 10 includes a pallet body 11, on which front and rear clamps 12 and left and right clamps 13 are mounted.

[0059] There are multiple front and rear clamps 12, which are installed at equal intervals along the length of the tray body 11. In this embodiment, there are eight clamps, each corresponding to the placement position of eight battery cells on the tray body 11. Each front and rear clamp 12 includes a front clamping plate 121, a rear clamping plate 122, and a front and rear driver 123. The front and rear driver 123 is a bidirectional synchronous drive structure, such as a bidirectional cylinder. The output ends of the two piston rods of the bidirectional cylinder are connected to the front clamping plate 121 and the rear clamping plate 122, respectively. When the front clamping plate 121 and the rear clamping plate 122 approach each other, the battery cell is clamped at a preset position in the front-rear direction. The moving direction of the front clamping plate 121 and the rear clamping plate 122 is parallel to the conveying direction of the conveyor line 20.

[0060] There is one left and right clamp 13. The left and right clamp 13 includes a left clamp 131, a right clamp 132 and a left and right driver 133. The left and right driver 133 is used to drive the left clamp 131 and the right clamp 132 to move closer or further away synchronously. The left and right driver 133 is a bidirectional synchronous drive structure. For example, a bidirectional cylinder such as a front and rear driver 123 can be used. The left clamp 131 and the right clamp 132 are respectively fixed on the two piston rod output ends of the bidirectional cylinder (in the attached figure of the embodiment, the piston rod end is installed with a connecting plate, which is used to fix and connect with the corresponding clamp) so as to realize synchronous opposite movement to center all the battery cells on the tray body 11 towards the tray body 11, and synchronously move away from each other under the drive of the bidirectional cylinder, so as to facilitate the release of the clamping of the battery cells and facilitate the picking and putting of the battery cells.

[0061] The pallet body 11 includes a base plate 111, a support plate 112, and a top plate 113 arranged sequentially from bottom to top. The battery cells are placed on the top plate 113. The bidirectional cylinders of the front and rear clamps 12 are fixed to the pallet body 11. A through slot 1131 is provided on the top plate 113 corresponding to the positions of the front clamp 121 and the rear clamp 122. The front clamp 121 and the rear clamp 122 pass through the through slot 1131 and clamp the battery cells on the top plate 113. The height of the support plate 112 is designed to provide space for the front and rear clamps 12.

[0062] III. Teleportation Line 20: As indicated in the above description, the conveyor line 20 consists of two parallel synchronous conveyor lines (21, 22). The pallet body 11 is placed on the two synchronous conveyor lines (21, 22). To achieve the initial positioning of the pallet mechanism 10, a guide plate 201 with an inclined surface is installed on the outer side of each synchronous conveyor line away from the center of the conveyor line 20. The inclined surfaces of the two guide plates 201 on each conveyor line 20 are opposite to each other to form a V-shaped guide opening at the end of the conveyor line 20.

[0063] In one embodiment, to prevent the pallet mechanism 10 from failing to be accurately placed on the two synchronous conveyor lines of the same conveyor line 20 at one time, a support roller 202 is installed at the end between the two synchronous conveyor lines. The support roller 202 is at the same height as the synchronous conveyor line, and the rotation axis of the support roller 202 is perpendicular to the conveying direction of the conveyor line 20. There is a gap between the support roller 202 and the synchronous conveyor line to facilitate the forklift to place the pallet mechanism 10 directly on the conveyor line 20 and the support roller 202.

[0064] In one embodiment, the two synchronous conveyor lines (21, 22) of the conveyor line 20 are both multiple rollers or drums distributed along the conveying direction of the conveyor line 20. The conveyor line 20 is a power-driven conveyor line.

[0065] IV. Lifting Mechanism 30: The lifting mechanism 30 includes a lifting cylinder 31 and a lifting plate 32. The lifting cylinder 31 is the lifting driver mentioned above. The lifting cylinder 31 is fixed on the frame 1000, and the lifting plate 32 is fixed at the output end of the lifting cylinder 31. The lifting cylinder 31 is used to drive the lifting plate 32 to rise and fall.

[0066] In one embodiment, a positioning post 321 is fixed on the lifting plate 32, and a positioning hole that cooperates with the positioning post 321 is opened on the bottom plate 111 of the tray body 11, so as to ensure that the position of the tray body 11 at the testing station is more accurate and facilitates the subsequent probe to accurately align with the cell electrode post.

[0067] V. Blocking Mechanism 40: The loading station, inspection station, and unloading station are each equipped with a blocking mechanism 40, and each blocking mechanism 40 corresponds to a sensor 43. The blocking mechanism 40 includes a blocking cylinder 41 and a blocking element 42. The blocking cylinder 41 is the blocking actuator mentioned earlier, fixed to the frame 1000. The blocking cylinder 41 drives the blocking element 42 to rise and fall, and the blocking element 42 blocks the pallet mechanism 10 from being conveyed on the conveyor line 20. The blocking element 42 is equipped with rollers 421 that abut against the front side of the pallet body 11. The sensor 43 detects whether the pallet mechanism 10 has reached the corresponding station. In this embodiment, the sensor 43 is a proximity switch, which is fixed to the frame 1000.

[0068] During operation, when the multi-specification battery testing tray mechanism 10 moves to the testing station along the conveyor line 20, the blocking cylinder 41 drives the blocking member 42 to extend, and the roller 421 abuts against the front side of the tray body 11, preventing the tray mechanism 10 from moving forward. Subsequently, the lifting cylinder 31 drives the lifting plate 32 to move upward, lifting the entire tray mechanism 10 upward, causing the tray body 11 to detach from the conveyor line 20. At this time, the probe mechanism above the tray mechanism 10 can control the probe to contact the battery cell terminals below for testing. Since the battery cell has detached from the conveyor line 20 during the testing process at the testing station, the conveyor line 20 can continue to transport other tray mechanisms 10.

[0069] After the inspection is completed, the lifting cylinder 31 drives the lifting plate 32 to descend, the pallet mechanism 10 falls back onto the conveyor line 20, the blocking cylinder 41 drives the blocking part 42 to retract, and the pallet mechanism 10 continues to move with the conveyor line 20 to the unloading station.

[0070] The battery capacity detection line in this embodiment also includes a controller. The controller is electrically connected to the sensor 43, the blocking mechanism 40, the lifting mechanism 30, and the battery capacity detection mechanism 100. After the sensor 43 senses the tray mechanism 10, the controller controls the blocking member 42 of the blocking mechanism 40 to block the tray mechanism 10. At the detection station, the controller controls the blocking mechanism 40 of the detection station to extend to block the tray mechanism 10. Then, the controller controls the lifting mechanism 30 to lift the tray mechanism 10. Then, or at the same time as the lifting mechanism 30 lifts, the controller controls the lifter of the battery capacity detection mechanism 100 to drive the probe 190 down to contact the cell terminal.

[0071] This embodiment also provides a battery capacity detection method, which requires the aforementioned battery capacity detection line and includes the following steps: Step S1: The loading robot 50 places the battery cells onto the tray mechanism 10 located at the loading station.

[0072] Step S2: Conveyor line 20 transports the tray mechanism 10 carrying the battery cells to the inspection station. Before the battery cells are transported to the inspection station by conveyor line 20, an identification label is affixed to each battery cell by pre-inspection labeling machine 70.

[0073] Step S3: When the pallet mechanism 10 arrives at the inspection station, the lifting mechanism 30 lifts the pallet mechanism 10 to remove it from the conveyor line 20.

[0074] Step S4: The battery capacity detection mechanism 100 descends, and the probe 190 contacts the terminal of the battery cell to perform battery capacity detection.

[0075] Step S5: After the test is completed, the battery capacity testing mechanism 100 rises, the lifting mechanism 30 falls, and the tray mechanism 10 falls back onto the conveyor line 20.

[0076] In step S6, the conveyor line 20 transports the tray mechanism 10 carrying the battery cells to the unloading station. Before the cells are transported to the unloading station, the post-inspection labeling machine 80 affixes a test capacity label to each battery cell according to the test results. Then, the unloading robot 60 removes the battery cells from the tray mechanism 10 at the unloading station.

[0077] In step S2, when the pallet mechanism 10 reaches the loading station, the sensor 43 of the loading station senses the pallet mechanism 10, and the controller controls the blocking mechanism 40 of the loading station to extend, and the loading robot 50 performs loading; after loading is completed, the blocking mechanism 40 retracts.

[0078] In step S3, when the pallet mechanism 10 reaches the detection station, the sensor 43 of the detection station senses the pallet mechanism 10, the controller controls the blocking mechanism 40 of the detection station to extend the blocking member 42 to block the pallet mechanism 10 through the roller 421, and the lifting mechanism 30 then lifts the pallet mechanism 10.

[0079] In step S6, when the pallet mechanism 10 reaches the unloading station, the sensor 43 of the unloading station senses the pallet mechanism 10, and the controller controls the blocking mechanism 40 of the unloading station to extend, and the unloading robot 60 unloads the material; after the unloading is completed, the blocking mechanism 40 retracts.

[0080] In this embodiment, the conveyor line 20 is set as two parallel synchronous conveyor lines (21, 22) with a gap, and a lifting mechanism 30 is set in the area corresponding to the detection station. When the pallet mechanism 10 arrives at the detection station, the lifting mechanism 30 lifts the pallet mechanism 10 upward to make it separate from the conveyor line 20, so as to realize the parallel operation of battery capacity detection (about 1 hour) and conveyor line 20 conveying operation. During the detection process, the conveyor line 20 can continue to convey other pallet mechanisms 10, which greatly improves the efficiency of the production line. Meanwhile, by setting up blocking mechanisms 40 and sensors 43 at each workstation, the controller controls the blocking mechanism 40 to extend after the sensor 43 detects that the pallet mechanism 10 is in position, thus achieving precise positioning of the pallet mechanism 10. The positioning pin 321 on the lifting plate 32 cooperates with the positioning hole on the pallet mechanism 10 to ensure the positional accuracy of the pallet mechanism 10 after it is lifted, and can avoid the influence of the vibration of the conveyor line 20 on the detection accuracy.

[0081] Furthermore, this embodiment features an adjustable probe 190 spacing design in the battery capacity detection mechanism 100. The bidirectional output driver 150 drives the two sets of probes 190 to move closer or further apart, which can adapt to the changes in the terminal spacing of batteries of different specifications and achieve rapid model changeover. The elastic detection head 192 structure of the probe 190 enables flexible contact between the probe 190 and the terminal, avoiding rigid impact damage.

[0082] In addition, by setting up a pre-inspection labeling machine 70 between the loading station and the inspection station, and a post-inspection labeling machine 80 between the inspection station and the unloading station, the identification of the battery cells and the identification of the inspection results are realized, forming a complete inspection traceability chain; by using two parallel conveyor lines 20 to share the loading robot 50 and the unloading robot 60, the number of equipment is reduced, the cost is reduced, and the loading and unloading efficiency is improved.

[0083] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A battery reserve detection line, characterized by: The device includes a conveyor line and a tray mechanism. The conveyor line is provided with a loading station, a testing station and a unloading station in sequence along the conveying direction. There are multiple tray mechanisms, which are used to place on the conveyor line. Each tray mechanism can hold multiple battery cells. The device is characterized by further including a battery capacity testing mechanism, a lifting mechanism, a loading robot and an unloading robot. The battery capacity testing mechanism is located at the testing station, above the tray mechanism; The conveyor line consists of two parallel synchronous conveyor lines with a gap between them. The lifting mechanism is located between the two synchronous conveyor lines. The lifting mechanism lifts the pallet mechanism located at the inspection station upwards to remove it from the conveyor line. The loading robot is used to place the battery cells onto the tray mechanism; The unloading robot is used to remove the battery cells from the tray mechanism.

2. The battery reserve detection line of claim 1, wherein: The battery capacity detection mechanism includes a lift and a probe spacing adjuster; the probe spacing adjuster includes a bidirectional output driver with two output terminals; each of the two output terminals is equipped with multiple probes, and the bidirectional output driver drives the two output terminals to move closer or further apart, and the probes of the two output terminals form a probe group; the lift is used to drive the probe spacing adjuster to move up and down.

3. The battery reserve detection line of claim 2, wherein: The probe includes a probe base, a detection head, and an elastic element. The probe base is fixedly connected to the output end of the bidirectional output driver. The detection head is vertically slidably connected to the probe base. One end of the elastic element abuts against the detection head, and the other end abuts against the probe base or the output end.

4. The battery reserve detection line of claim 1, wherein: The tray mechanism includes a tray body, multiple front and rear clamps, and a left and right clamp; the multiple front and rear clamps clamp individual cells from the front and rear sides respectively; the left and right clamps include a left clamp and a right clamp, which are close to each other to center all the cells on the tray body toward the tray body.

5. The battery reserve detection line of claim 4, wherein: The lifting mechanism includes a lifting driver and a lifting plate. A positioning post is fixed on the lifting plate, and a positioning hole that mates with the positioning post is provided on the tray body.

6. The battery reserve detection line of claim 1, wherein: It also includes multiple blocking mechanisms and multiple sensors. The loading station, the detection station and the unloading station are respectively equipped with blocking mechanisms and sensors. The sensors correspond one-to-one with the blocking mechanisms. The sensors detect whether the pallet mechanism has reached the corresponding station. The blocking mechanism includes a blocking driver and a blocking component. The blocking component is controlled by the blocking driver to block the pallet mechanism from being conveyed on the conveyor line.

7. The battery reserve detection line of claim 1, wherein: It also includes a pre-inspection labeling machine and a post-inspection labeling machine; the pre-inspection labeling machine is set between the loading station and the inspection station, and is used to affix an identification label to each battery cell. The post-inspection labeling machine is located between the inspection station and the unloading station. The post-inspection labeling machine is used to affix a capacity label to each battery cell.

8. The battery reserve detection line of claim 1, wherein: There are two conveyor lines, which are parallel and share a loading robot and an unloading robot.

9. A method of detecting a battery reserve, characterized by: Applied to the battery capacity testing line according to any one of claims 1-9, and comprising the following steps: Step S1: The loading robot places the battery cells onto the tray mechanism located at the loading station; Step S2: The conveyor line transports the tray mechanism carrying the battery cells to the testing station; Step S3: When the pallet mechanism arrives at the inspection station, the lifting mechanism lifts the pallet mechanism to remove it from the conveyor line; Step S4: The battery capacity detection mechanism descends, and the probe contacts the terminal of the battery cell to detect the battery capacity. Step S5: After the test is completed, the battery capacity detection mechanism rises, the lifting mechanism descends, and the tray mechanism falls back onto the conveyor line; In step S6, the conveyor line transports the tray mechanism carrying the battery cells to the unloading station, where the unloading robot removes the battery cells from the tray mechanism.

10. The method of claim 9, wherein: Between step S2 and step S3, there is also a pre-inspection labeling step: the pre-inspection labeling machine affixes an identification label to each battery cell; Between steps S5 and S6, there is also a post-test labeling step: the post-test labeling machine affixes a test capacity label to each cell based on the test results.

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