A new energy automobile battery pack charging and discharging detection device

Abstract

This invention provides a charging and discharging testing device for new energy vehicle battery packs, relating to the field of automotive battery testing technology. It includes a transfer mechanism for transferring battery packs to be tested, a charging and discharging mechanism for performing charging and discharging tests on the battery packs, and an inlet / outlet mechanism for feeding and feeding the battery packs to be tested in and out. Through the coordinated operation of the transfer mechanism, the inlet / outlet mechanism, and the charging and discharging mechanism, this invention achieves fully automated operation of the entire process of battery pack transportation, lifting, transfer, automatic connection of the testing connector, and automatic sorting based on the results after testing. The movable base can freely switch directions within a grid path formed by vertical and horizontal moving rails, efficiently transferring battery packs from the feed conveyor belt to the testing rack, and after testing, feeding them back to the feed conveyor belt or the outlet belt according to whether they pass or fail. This invention reduces human intervention and effectively improves the testing cycle time and the overall efficiency of the production line.

Description

Technical Field

[0001] This invention relates to the field of automotive battery testing technology, and in particular to a charging and discharging testing device for new energy vehicle battery packs. Background Technology

[0002] As a core component of new energy vehicles, the performance and safety of battery packs directly affect the overall vehicle quality and the personal safety of users. Battery packs undergo rigorous charge and discharge performance testing before leaving the factory, after repairs, and during regular maintenance to verify whether their capacity, internal resistance, cycle life, and safety protection functions meet standards.

[0003] Currently, most commercially available battery pack charge / discharge testing equipment uses fixed testing stations combined with manual or semi-automatic loading and unloading methods. Specifically, the battery packs to be tested are usually manually transported to the testing rack using a trolley or overhead crane, and then the connectors on the battery packs are manually inserted into the testing connectors before the charge / discharge tester is started. After the test is completed, the battery packs are manually removed and sorted into the qualified or unqualified product area according to the test results.

[0004] However, the existing technologies mentioned above have the following shortcomings: First, the degree of automation is low, and the detection efficiency is limited. Because the loading, unloading, and sorting processes heavily rely on manual operation, the utilization rate of the detection equipment is constrained by the operator's speed, making continuous and efficient automated detection difficult. Especially on large-scale production lines, manual operation can easily become a bottleneck in production capacity. Second, battery packs are large and heavy, making manual handling and connection difficult. New energy vehicle battery packs are typically heavy, and manual handling is not only labor-intensive, but also requires repeated adjustments to the position when connecting the battery pack connectors to the detection connectors due to the high accuracy requirements. This results in long connection times and is prone to damage due to improper operation. Third, the detection process lacks effective coordination with material flow. In existing equipment, the conveying, detection, and separation of qualified and unqualified battery packs are often independent, lacking a unified transfer and scheduling mechanism. This leads to complex logistics routes within the workshop, large equipment footprint, and makes the battery packs susceptible to bumps and damage during transport. Fourth, insufficient consideration is given to heat dissipation during the detection process. Battery packs generate a significant amount of heat during charge and discharge testing. Inadequate heat dissipation can not only affect the accuracy of test data but also potentially lead to safety hazards such as thermal runaway. While some existing equipment includes fans, these are mostly fixed and difficult to adjust flexibly according to the testing station. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a charge and discharge testing device that can realize automatic loading and unloading of battery packs, automatic docking detection, automatic separation of qualified and unqualified products, and has good heat dissipation capabilities. This device can solve the technical problems of low detection efficiency, high labor costs, and inability to effectively guarantee detection safety in the prior art.

[0006] This invention provides a charging and discharging testing device for a new energy vehicle battery pack, including a transfer mechanism for transferring the battery pack to be tested. The transfer mechanism is provided with a charging and discharging mechanism for charging and discharging the battery pack to be tested and an inlet and outlet mechanism for feeding the battery pack to be tested in and out.

[0007] The transfer mechanism includes multiple vertical moving rails, horizontal moving rails, vertical moving rods, and horizontal moving rods. The vertical moving rails are fixedly installed with the multiple horizontal moving rails and are arranged perpendicularly to the horizontal moving rails. The vertical moving rails are provided with vertical moving grooves, and the horizontal moving rails are provided with horizontal moving grooves. At the junction of the vertical moving rails and the horizontal moving rails, the vertical moving grooves and the horizontal moving grooves are connected. The vertical moving rods are fixedly installed with the horizontal moving rods, and the horizontal moving rods are fixedly installed with the vertical moving rails.

[0008] The transfer mechanism also includes a vertical limiting plate and a horizontal limiting plate. The vertical limiting plate is fixedly installed at both ends of the vertical moving rail, and the horizontal limiting plate is fixedly installed at the end of the horizontal moving rail.

[0009] The transfer mechanism further includes a movable base, a bottom fixed plate, a lifting frame, a lifting guide column, a lifting motor, a lifting screw, a lifting frame, an adapting slider, a lifting fork, a transverse guide column, and an adapting spring. The movable base is located on the vertical moving rail and the transverse moving rail. The bottom fixed plate is fixedly installed inside the movable base. The lifting frame is rotatably installed on the bottom fixed plate. The lifting motor is fixedly installed on the top of the lifting frame. The lifting screw is rotatably installed on the lifting frame and fixedly installed with the motor shaft of the lifting motor. The lifting guide column is fixedly installed on the lifting frame. The lifting frame is slidably installed on the lifting guide column, and the lifting frame and the lifting screw form a threaded transmission. The transverse guide column is fixedly installed on the lifting frame. The adapting slider is slidably installed on the transverse guide column. The adapting spring is disposed between the adapting slider and the lifting frame. The lifting fork is fixedly installed on the adapting slider, and the end of the lifting fork is provided with an adapting rounded corner.

[0010] The transfer mechanism also includes a movable frame, a movable motor, traveling wheels, guide balls, and a drive belt. The movable frame is fixedly installed at the bottom of the lifting frame, the movable motor is fixedly installed on the movable frame, the traveling wheels are rotatably installed on the movable frame, and the traveling wheels roll on the vertical and horizontal moving rods. The movable motor drives the traveling wheels to rotate through the drive belt, and the guide balls are rotatably installed at the bottom of the movable base, and the guide balls slide in the vertical and horizontal moving grooves.

[0011] The transfer mechanism also includes a rotary motor, a motor gear, a rotary gear, a rotary guide wheel, and a bottom rotating wheel. The rotary motor is fixedly mounted on the bottom fixed plate, the motor gear is fixedly mounted on the motor shaft of the rotary motor, the rotary gear is fixedly mounted on the bottom of the lifting frame, the rotary gear meshes with the motor gear, the bottom rotating wheel is rotatably mounted on the bottom of the lifting frame, the rotary guide wheel is rotatably mounted below the lifting frame, the vertical moving rod moves along the inner wall of the moving base, and the bottom rotating wheel rolls along the upper surface of the moving base.

[0012] The charging and discharging mechanism includes a detection frame, a bracket, a side guide plate, and side guide wheels. Multiple brackets are fixedly installed on the detection frame, the side guide plate is fixedly installed on the bracket, and multiple side guide wheels are rotatably installed on the side guide plate. The end of the side guide plate is provided with an alignment arc surface.

[0013] The charging and discharging mechanism also includes a detection slider, a detection connector, a pressure spring, and a pressure sensor. Multiple detection sliders are slidably mounted on the detection frame, and a detection connector is fixedly mounted on the detection slider. The pressure spring is located between the detection slider and the detection frame, and the pressure sensor is fixedly mounted on the detection frame, with the pressure sensor located below the detection slider.

[0014] The charging and discharging mechanism also includes a heat dissipation motor, a heat dissipation impeller, and a charging and discharging detector. Multiple heat dissipation impellers are rotatably mounted on the testing frame, and multiple heat dissipation motors are fixedly mounted on the testing frame. The heat dissipation impellers are fixedly mounted to the motor shafts of the heat dissipation motors. The charging and discharging detector is located next to the testing frame, and the testing connector is electrically connected to the charging and discharging detector.

[0015] The feeding mechanism includes an infeed frame, infeed rollers, infeed belt, outfeed frame, outfeed rollers, outfeed belt, battery tray, and positioning blocks. Multiple infeed rollers are rotatably mounted on the infeed frame and drive the infeed belt to rotate. Multiple outfeed rollers are rotatably mounted on the outfeed frame and drive the outfeed belt to rotate. The battery tray is placed on the infeed belt. The lower surface of the battery tray is provided with vertical grooves and insertion grooves. The vertical grooves contact the infeed belt. Four positioning blocks are fixedly mounted on the battery tray. The upper surface of the battery tray is provided with rounded corners.

[0016] The beneficial effects of the technical solution provided by the embodiments of the present invention include at least the following: The present invention, through the coordinated operation of the transfer mechanism, the infeed / outfeed mechanism, and the charging / discharging mechanism, achieves fully automated operation of the battery pack from conveying, lifting, transferring, and automatically connecting to the testing connector to automatic sorting according to the results after testing. The moving base can freely switch directions in the grid path formed by the vertical and horizontal moving rails. Combined with the lifting and rotating actions of the lifting frame, it can efficiently transfer the battery pack from the feed belt to the testing frame, and after testing, send it to the feed belt or the delivery belt respectively according to whether it is qualified or not, eliminating the need for manual handling and manual insertion / removal of connectors, reducing human intervention, and effectively improving the testing cycle time and the overall efficiency of the production line. An adaptive rounded corner is provided at the end of the lifting fork, and in conjunction with an adaptive slider, a horizontal guide post, and an adaptive spring, it ensures that when the lifting fork is inserted into the insertion slot at the bottom of the battery tray, it can... It can tolerate positional deviations of several millimeters, achieving flexible correction. At the same time, the side guide plate of the testing frame has an alignment arc surface, and the side guide wheels can reduce friction, ensuring that the battery tray accurately enters the testing station. The design of the testing slider and the pressure spring ensures that the testing connector and the battery pack connector make smooth contact under the control of the pressure sensor, avoiding rigid impact. This not only ensures the reliability of the electrical connection, but also extends the service life of the connector. Through the multi-angle rotation of the lifting frame relative to the moving base, the battery packs after testing can automatically select their destination according to the test results: qualified products are sent back to the feeding belt by the moving base, flow out with the feeding belt and enter the next process, while unqualified products are transferred to the delivery belt and output independently by the delivery belt. This diversion mechanism does not require additional sorting equipment, nor does it require manual judgment and handling, reducing the risk of false detection and missed detection, while also reducing the complexity of workshop logistics management. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the transfer mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the transfer mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 2 .

[0021] Figure 4 This is a schematic diagram of the transfer mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 3 .

[0022] Figure 5 This is a schematic diagram of the transfer mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 4 .

[0023] Figure 6 This is a schematic diagram of the transfer mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 5 .

[0024] Figure 7 This is a schematic diagram of the charging and discharging mechanism structure of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 1 .

[0025] Figure 8 This is a schematic diagram of the charging and discharging mechanism structure of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 2 .

[0026] Figure 9 This is a schematic diagram of the structure of the inlet and outlet mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 1 .

[0027] Figure 10 This is a schematic diagram of the structure of the inlet and outlet mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 2 .

[0028] Figure 11 This is a schematic diagram of the structure of the inlet and outlet mechanism of a new energy vehicle battery pack charging and discharging detection device provided in an embodiment of the present invention. Figure 3 .

[0029] Explanation of reference numerals in the attached diagram: 101-Vertical moving rail; 102-Vertical limiting plate; 103-Horizontal moving rail; 104-Horizontal limiting plate; 105-Vertical moving groove; 106-Horizontal moving groove; 107-Moving base; 108-Lifting frame; 109-Lifting guide column; 110-Lifting motor; 111-Lifting screw; 112-Lifting frame; 113-Adaptive slider; 114-Lifting fork; 115-Horizontal guide column; 116-Adaptive spring; 117-Bottom fixing plate; 118-Rotary motor; 119-Motor gear; 120-Rotary gear; 121-Moving frame; 122-Moving motor; 123-Walking wheel; 124-Drive belt; 125-Rotary guide wheel; 126-Bottom turntable; 12 7 - Adaptable rounded corners; 128 - Vertical moving rod; 129 - Horizontal moving rod; 130 - Guide ball; 201 - Detection frame; 202 - Bracket; 203 - Side guide plate; 204 - Side guide wheel; 205 - Alignment arc surface; 206 - Cooling motor; 207 - Cooling impeller; 208 - Detection slider; 209 - Detection connector; 210 - Downward pressure spring; 211 - Pressure sensor; 212 - Charge / discharge detector; 301 - Feeding frame; 302 - Feeding roller; 303 - Feeding belt; 304 - Feeding frame; 305 - Feeding roller; 306 - Feeding belt; 307 - Battery tray; 308 - Positioning block; 309 - Vertical groove; 310 - Insertion groove; 4 - Battery pack; 5 - Connector. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0033] Reference manual attached Figures 1 to 11The present invention provides a new energy vehicle battery pack charge and discharge testing device, including a transfer mechanism for transferring the battery pack 4 to be tested, the transfer mechanism being provided with a charge and discharge mechanism for performing charge and discharge testing on the battery pack 4 to be tested and an inlet and outlet mechanism for feeding the battery pack 4 to be tested into and out of the battery pack 4 to be tested.

[0034] The beneficial effects of the technical solution provided by the embodiments of the present invention include at least the following: The present invention achieves fully automated operation of the battery pack from conveying, lifting, transferring, and automatically connecting the test connector to the test results after the test is completed through the coordinated cooperation of the transfer mechanism, the inlet and outlet mechanism and the charging and discharging mechanism. The moving base can freely switch directions in the grid path formed by the vertical moving rail and the horizontal moving rail. Combined with the lifting and rotating action of the lifting frame, the battery pack can be efficiently transferred from the feed belt to the test frame. After the test is completed, it can be sent to the feed belt or the delivery belt respectively according to whether it is qualified or not. There is no need for manual handling and manual plugging and unplugging of connectors, which reduces human intervention and effectively improves the test cycle and the overall efficiency of the production line. The lifting fork is equipped with a rounded corner at its end, along with an adaptive slider, transverse guide post, and adaptive spring. This allows for a tolerance of several millimeters of positional deviation when the lifting fork is inserted into the insertion slot at the bottom of the battery tray, achieving flexible correction. Simultaneously, the side guide plate of the testing frame features an alignment arc surface, and the side guide wheels reduce friction, ensuring the battery tray accurately enters the testing station. The design of the testing slider and the downward pressure spring ensures smooth contact between the testing connector and the battery pack connector under the control of a pressure sensor, avoiding rigid impacts. This guarantees the reliability of the electrical connection and extends the service life of the connector. Through multi-angle rotation of the lifting frame relative to the moving base, the battery packs after testing can automatically choose their destination based on the test results: qualified products are returned to the feed conveyor belt by the moving base, flow out with the feed conveyor belt, and enter the next process; unqualified products are transferred to the output conveyor belt and output independently. This diversion mechanism eliminates the need for additional sorting equipment and manual judgment and handling, reducing the risk of false detection and missed detection, while also reducing the complexity of workshop logistics management.

[0035] In one possible implementation, the transfer mechanism includes multiple vertical moving rails 101, horizontal moving rails 103, vertical moving rods 128, and horizontal moving rods 129. The vertical moving rails 101 are fixedly installed with the multiple horizontal moving rails 103, and the vertical moving rails 101 and horizontal moving rails 103 are arranged perpendicularly. The vertical moving rails 101 are provided with vertical moving grooves 105, and the horizontal moving rails 103 are provided with horizontal moving grooves 106. At the junction of the vertical moving rails 101 and horizontal moving rails 103, the vertical moving grooves 105 and horizontal moving grooves 106 are connected. The vertical moving rods 128 and horizontal moving rods 129 are fixedly installed, the vertical moving rods 128 and horizontal moving rails 103 are fixedly installed, and the horizontal moving rods 129 and vertical moving rails 101 are fixedly installed.

[0036] In one possible implementation, the transfer mechanism further includes a vertical limiting plate 102 and a horizontal limiting plate 104. The vertical limiting plate 102 is fixedly installed at both ends of the vertical moving rail 101, and the horizontal limiting plate 104 is fixedly installed at the end of the horizontal moving rail 103.

[0037] In one possible implementation, the transfer mechanism further includes a movable base 107, a bottom fixing plate 117, a lifting frame 108, a lifting guide column 109, a lifting motor 110, a lifting screw 111, a lifting frame 112, an adapting slider 113, a lifting fork 114, a transverse guide column 115, and an adapting spring 116. The movable base 107 is located on the vertical moving rail 101 and the transverse moving rail 103. The bottom fixing plate 117 is fixedly installed inside the movable base 107. The lifting frame 108 is rotatably mounted on the bottom fixing plate 117. The lifting motor 110 is fixedly installed on the top of the lifting frame 108, and the lifting screw 111 is rotatably mounted on... On the lifting frame 108, the lifting screw 111 is fixedly installed on the motor shaft of the lifting motor 110, the lifting guide column 109 is fixedly installed on the lifting frame 108, the lifting frame 112 is slidably installed on the lifting guide column 109, the lifting frame 112 and the lifting screw 111 form a threaded transmission, the transverse guide column 115 is fixedly installed on the lifting frame 112, the adapting slider 113 is slidably installed on the transverse guide column 115, the adapting spring 116 is disposed between the adapting slider 113 and the lifting frame 112, the lifting fork 114 is fixedly installed on the adapting slider 113, and the end of the lifting fork 114 is provided with an adapting fillet 127.

[0038] In one possible implementation, the transfer mechanism further includes a movable frame 121, a movable motor 122, a traveling wheel 123, a guide ball 130, and a drive belt 124. The movable frame 121 is fixedly installed at the bottom of the lifting frame 108, the movable motor 122 is fixedly installed on the movable frame 121, the traveling wheel 123 is rotatably installed on the movable frame 121, and the traveling wheel 123 rolls on the vertical moving rod 128 and the horizontal moving rod 129. The movable motor 122 drives the traveling wheel 123 to rotate through the drive belt 124, and the guide ball 130 is rotatably installed at the bottom of the movable base 107, and the guide ball 130 slides in the vertical moving groove 105 and the horizontal moving groove 106.

[0039] In one possible implementation, the transfer mechanism further includes a rotary motor 118, a motor gear 119, a rotary gear 120, a rotary guide wheel 125, and a bottom rotating wheel 126. The rotary motor 118 is fixedly mounted on the bottom fixed plate 117, the motor gear 119 is fixedly mounted on the motor shaft of the rotary motor 118, the rotary gear 120 is fixedly mounted on the bottom of the lifting frame 108, and the rotary gear 120 meshes with the motor gear 119. The bottom rotating wheel 126 is rotatably mounted on the bottom of the lifting frame 108, the rotary guide wheel 125 is rotatably mounted below the lifting frame 108, the vertical moving rod 128 moves along the inner wall of the moving base 107, and the bottom rotating wheel 126 rolls along the upper surface of the moving base 107.

[0040] In this embodiment of the invention, the mobile motor 122 drives the traveling wheel 123 to rotate via the drive belt 124. The traveling wheel 123 moves along the vertical moving rod 128 or the horizontal moving rod 129, thereby driving the mobile base 107 to move along the vertical moving rod 128 and the horizontal moving rod 129. When the mobile base 107 moves along the vertical moving rod 128, the guide balls 130 are located in the vertical moving grooves 105 on both sides of the vertical moving rod 128 for guidance. When the mobile base 107 moves along the horizontal moving rod 129, the guide balls... 130 is located in the horizontal movement groove 106 on both sides of the horizontal movement rod 129 for guidance. When the moving base 107 moves along the vertical movement rod 128, it needs to cross the horizontal movement groove 106. At this time, the setting of two traveling wheels 123 ensures that at least one traveling wheel 123 is always located on the vertical movement rod 128, so that the moving base 107 can smoothly cross the horizontal movement groove 106. Similarly, it allows the moving base 107 to smoothly cross the horizontal movement rail 103 on the horizontal movement rod 129. The moving base 107 is solid and is used for counterweight.

[0041] In this embodiment of the invention, the rotary motor 118 drives the motor gear 119 to rotate, and the motor gear 119 drives the rotary gear 120, the lifting frame 108, and the moving frame 121 to rotate relative to the moving base 107. The friction between the lifting frame 108 and the moving base 107 is reduced by the rotating guide wheel 125 and the bottom rotating wheel 126. When the guide ball 130 is located at the junction of the vertical moving groove 105 and the horizontal moving groove 106, the traveling wheel 123 is located at the junction of the vertical moving rod 128 and the horizontal moving rod 129. At this time, by rotating the lifting frame 108 90 degrees relative to the moving base 107, the traveling wheel 123 can be transferred from the vertical moving rod 128 to the horizontal moving rod 129, or from the horizontal moving rod 129 to the vertical moving rod 128, thereby realizing the path conversion.

[0042] In this embodiment of the invention, after the loading / unloading mechanism transports the battery pack 4 to the designated position, the movable base 107 switches to a certain vertical moving rod 128. At this time, the guide ball 130 is located in the horizontal moving rail 103, and the movable base 107 moves towards the battery pack 4, so that the lifting fork 114 is inserted into the insertion slot 310. Because the lifting fork 114 may not be perfectly aligned with the insertion slot 310 during loading and unloading, there may be an error of a few millimeters. At this time, the adaptive fillet 127 is used to facilitate the insertion of the lifting fork 114 into the insertion slot 310. At this time, the adaptive slider 113 moves along the horizontal guide post 115, adapting... Spring 116 is stretched or compressed, and then lifting motor 110 drives lifting screw 111 to rotate, causing lifting frame 112 to rise along lifting guide column 109. The battery tray 307 is lifted from the feed belt 303 by lifting fork 114. Then spring 116 returns to its original position. Then moving base 107 returns to the junction of vertical moving rod 128 and horizontal moving rod 129. Lifting frame 108 rotates 180 degrees so that lifting fork 114 and battery tray 307 face the testing frame 201. Then moving base 107 transports battery tray 307 to testing frame 201.

[0043] In this embodiment of the invention, after the test is completed, the movable base 107 returns to the junction of the vertical moving rod 128 and the horizontal moving rod 129 with the tested battery pack 4 and battery tray 307. If the test is qualified, the lifting frame 108 rotates 180 degrees, and then the movable base 107 moves toward the feeding frame 301 to place the tested battery tray 307 and battery pack 4 back onto the feeding belt 303. If the test is unqualified, the lifting frame 108 rotates 90 degrees, and then the movable base 107 moves toward the output frame 304 to place the battery tray 307 and battery pack 4 onto the output belt 306.

[0044] In one possible implementation, the charging and discharging mechanism includes a detection frame 201, a bracket 202, a side guide plate 203, and a side guide wheel 204. Multiple brackets 202 are fixedly installed on the detection frame 201, the side guide plate 203 is fixedly installed on the bracket 202, and multiple side guide wheels 204 are rotatably installed on the side guide plate 203. The end of the side guide plate 203 is provided with an alignment arc surface 205.

[0045] In one possible implementation, the charging and discharging mechanism further includes a detection slider 208, a detection connector 209, a pressure spring 210, and a pressure sensor 211. Multiple detection sliders 208 are slidably mounted on the detection frame 201. The detection connector 209 is fixedly mounted on the detection slider 208. The pressure spring 210 is disposed between the detection slider 208 and the detection frame 201. The pressure sensor 211 is fixedly mounted on the detection frame 201 and is located below the detection slider 208.

[0046] In one possible implementation, the charging and discharging mechanism further includes a heat dissipation motor 206, a heat dissipation impeller 207, and a charging and discharging detector 212. Multiple heat dissipation impellers 207 are rotatably mounted on the testing frame 201, and multiple heat dissipation motors 206 are fixedly mounted on the testing frame 201. The heat dissipation impellers 207 and the motor shafts of the heat dissipation motors 206 are fixedly mounted. The charging and discharging detector 212 is located next to the testing frame 201, and the testing connector 209 is electrically connected to the charging and discharging detector 212.

[0047] In this embodiment of the invention, when the movable base 107, carrying the battery tray 307 and battery pack 4, arrives at the testing frame 201, the connector 5 on the battery pack 4 is first inserted into the testing connector 209. Guided by the alignment arc surface 205, the battery tray 307 is precisely positioned between the two side guide plates 203. Simultaneously, the side guide wheels 204 reduce friction. Subsequently, the lifting frame 112 and the lifting fork 114 lower the battery tray 307 and battery pack 4, compressing the pressure spring 210. When the testing slider 208 contacts the pressure sensor 211... Then, the battery tray 307 falls onto the bracket 202, which supports the battery tray 307. At this time, the charge and discharge tester 212 performs a charge and discharge test on the battery pack 4 through the test connector 209. Subsequently, the lifting frame 112 and the lifting fork 114 continue to descend, causing the lifting fork 114 to separate from the battery tray 307. At this time, the movable base 107 can continue to transport other battery packs 4, giving the battery packs 4 enough time to be tested. During the testing process, the cooling motor 206 drives the cooling impeller 207 to rotate, cooling the battery packs 4.

[0048] In this embodiment of the invention, after the test is completed, the lifting fork 114 is first inserted into the insertion slot 310 to lift the battery tray 307 from the bracket 202. At this time, the detection slider 208 is driven to rise, and the pressure spring 210 rebounds. When the detection slider 208 is disengaged from the pressure sensor 211, the test ends. Then, the lifting fork 114 drives the battery tray 307 and the battery pack 4 to move backward, so that the connector 5 is disengaged from the detection connector 209.

[0049] In one possible implementation, the feeding mechanism includes an infeed frame 301, an infeed roller 302, an infeed belt 303, an outfeed frame 304, an outfeed roller 305, an outfeed belt 306, a battery tray 307, and positioning blocks 308. Multiple infeed rollers 302 are rotatably mounted on the infeed frame 301, driving the infeed belt 303 to rotate. Multiple outfeed rollers 305 are rotatably mounted on the outfeed frame 304, driving the outfeed belt 306 to rotate. The battery tray 307 is placed on the infeed belt 303. The lower surface of the battery tray 307 is provided with a vertical groove 309 and an insertion groove 310, with the vertical groove 309 contacting the infeed belt 303. Four positioning blocks 308 are fixedly mounted on the battery tray 307, and the upper surface of the battery tray 307 is provided with rounded corners.

[0050] In this embodiment of the invention, the battery pack 4 is first placed between four positioning blocks 308. The rounded corners on the positioning blocks 308 make it easier to insert the battery pack 4. Then, the battery tray 307 is placed on the feed belt 303. The vertical groove 309 contacts the feed belt 303. The feed belt 303 transports the battery tray 307, the battery pack 4 to be tested, and the battery pack 4 that has passed the test. The delivery roller 305 drives the delivery belt 306 to rotate. The delivery belt 306 sends out the battery pack 4 that has failed the test, together with the battery tray 307.

[0051] Working principle: In use, the battery pack 4 is first placed between the four positioning blocks 308. The rounded corners on the positioning blocks 308 make it easier to insert the battery pack 4. Then, the battery tray 307 is placed on the feed belt 303. The vertical groove 309 contacts the feed belt 303. The feed belt 303 transports the battery tray 307 and the battery pack 4 to be tested. The mobile motor 122 drives the traveling wheel 123 to rotate via the drive belt 124. The traveling wheel 123 moves along the vertical moving rod 128 or the horizontal moving rod 129, thereby driving the mobile base 107 to move along the vertical moving rod 128 and the horizontal moving rod 129. When the mobile base 107 moves along the vertical moving rod 128, the guide balls 130 are located in the vertical moving grooves 105 on both sides of the vertical moving rod 128 for guidance. When the mobile base 107 moves along the horizontal moving rod 129, the guide balls 130 are located in the vertical moving grooves 105 on both sides of the vertical moving rod 128 for guidance. The horizontal moving grooves 106 on both sides of the horizontal moving rod 129 serve as guides. When the moving base 107 moves along the vertical moving rod 128, it needs to cross the horizontal moving grooves 106. At this time, the two traveling wheels 123 are arranged so that at least one traveling wheel 123 is always located on the vertical moving rod 128, so that the moving base 107 can smoothly cross the horizontal moving grooves 106. Similarly, the moving base 107 can smoothly cross the horizontal moving rails 103 on the horizontal moving rod 129. The moving base 107 is solid and is used for counterweight. The rotary motor 118 drives the motor gear 119 to rotate, and the motor gear 119 drives the rotary gear 120, the lifting frame 108, and the moving frame 121 to rotate relative to the moving base 107. The friction between the lifting frame 108 and the moving base 107 is reduced by the rotating guide wheel 125 and the bottom rotating wheel 126. When the guide ball 130 is located at the junction of the vertical moving groove 105 and the horizontal moving groove 106, the traveling wheel 123 is located at the junction of the vertical moving rod 128 and the horizontal moving rod 129. At this time, by rotating the lifting frame 108 90 degrees relative to the moving base 107, the traveling wheel 123 can be transferred from the vertical moving rod 128 to the horizontal moving rod 129, or from the horizontal moving rod 129 to the vertical moving rod 128, thus realizing the path conversion. After the loading / unloading mechanism transports the battery pack 4 to the designated position, the movable base 107 switches to a vertical moving rod 128. At this time, the guide ball 130 is located in the horizontal moving rail 103. The movable base 107 moves towards the battery pack 4, causing the lifting fork 114 to insert into the insertion slot 310. Because the lifting fork 114 may not be perfectly aligned with the insertion slot 310 during loading and unloading, there may be an error of a few millimeters. At this time, the adapting fillet 127 is used to facilitate the insertion of the lifting fork 114 into the insertion slot 310. At this time, the adapting slider 113 moves along the horizontal guide post 115, and the adapting spring 11... 6 is stretched or compressed, and then the lifting motor 110 drives the lifting screw 111 to rotate, which drives the lifting frame 112 to rise along the lifting guide column 109. The battery tray 307 is lifted from the feed belt 303 by the lifting fork 114, and then the adaptation spring 116 returns to its original position. Then the moving base 107 returns to the junction of the vertical moving rod 128 and the horizontal moving rod 129. The lifting frame 108 rotates 180 degrees so that the lifting fork 114 and the battery tray 307 face the detection frame 201. Then the moving base 107 transports the battery tray 307 to the detection frame 201.

[0052] The movable base 107, carrying the inspected battery pack 4 and battery tray 307, returns to the junction of the vertical moving rod 128 and the horizontal moving rod 129. If the inspection is successful, the lifting frame 108 rotates 180 degrees, and then the movable base 107 moves towards the feeding frame 301, placing the inspected battery tray 307 and battery pack 4 back onto the feeding belt 303. If the inspection fails, the lifting frame 108 rotates 90 degrees, and then the movable base 107 moves towards the delivery frame 304, placing the battery tray 307 and battery pack 4 onto the delivery belt 306. The battery tray 307 and the successful battery pack 4 are delivered via the feeding belt 303, and the delivery roller 305 drives the delivery belt 306 to rotate, delivering the failed battery pack 4 along with the battery tray 307. This invention covers any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of the invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. A charging and discharging testing device for a new energy vehicle battery pack, comprising a transfer mechanism for transferring the battery pack to be tested, characterized in that: The transfer mechanism is equipped with a charging and discharging mechanism for charging and discharging the battery pack to be tested, and an inlet and outlet mechanism for feeding the battery pack to be tested into and out of the battery pack. The charging and discharging mechanism includes a detection frame, a bracket, a side guide plate, and side guide wheels. Multiple brackets are fixedly installed on the detection frame, the side guide plate is fixedly installed on the bracket, and multiple side guide wheels are rotatably installed on the side guide plate. The end of the side guide plate is provided with an alignment arc surface. The charging and discharging mechanism also includes a detection slider, a detection connector, a pressure spring, and a pressure sensor. Multiple detection sliders are slidably mounted on the detection frame. A detection connector is fixedly mounted on the detection slider. The pressure spring is located between the detection slider and the detection frame. The pressure sensor is fixedly mounted on the detection frame and is located below the detection slider. The feeding mechanism includes an infeed frame, infeed rollers, infeed belt, outfeed frame, outfeed rollers, outfeed belt, battery tray, and positioning blocks. Multiple infeed rollers are rotatably mounted on the infeed frame and drive the infeed belt to rotate. Multiple outfeed rollers are rotatably mounted on the outfeed frame and drive the outfeed belt to rotate. The battery tray is placed on the infeed belt. The lower surface of the battery tray is provided with vertical grooves and insertion grooves. The vertical grooves contact the infeed belt. Four positioning blocks are fixedly mounted on the battery tray. The upper surface of the battery tray is provided with rounded corners.

2. The new energy vehicle battery pack charging and discharging detection device according to claim 1, characterized in that, The transfer mechanism includes multiple vertical moving rails, horizontal moving rails, vertical moving rods, and horizontal moving rods. The vertical moving rails are fixedly installed with the multiple horizontal moving rails and are arranged perpendicularly to the horizontal moving rails. The vertical moving rails are provided with vertical moving grooves, and the horizontal moving rails are provided with horizontal moving grooves. At the junction of the vertical moving rails and the horizontal moving rails, the vertical moving grooves and the horizontal moving grooves are connected. The vertical moving rods are fixedly installed with the horizontal moving rods, and the horizontal moving rods are fixedly installed with the vertical moving rails.

3. The new energy vehicle battery pack charging and discharging detection device according to claim 2, characterized in that, The transfer mechanism also includes a vertical limiting plate and a horizontal limiting plate. The vertical limiting plate is fixedly installed at both ends of the vertical moving rail, and the horizontal limiting plate is fixedly installed at the end of the horizontal moving rail.

4. The new energy vehicle battery pack charging and discharging detection device according to claim 3, characterized in that, The transfer mechanism further includes a movable base, a bottom fixed plate, a lifting frame, a lifting guide column, a lifting motor, a lifting screw, a lifting frame, an adapting slider, a lifting fork, a transverse guide column, and an adapting spring. The movable base is located on the vertical moving rail and the transverse moving rail. The bottom fixed plate is fixedly installed inside the movable base. The lifting frame is rotatably installed on the bottom fixed plate. The lifting motor is fixedly installed on the top of the lifting frame. The lifting screw is rotatably installed on the lifting frame and fixedly installed with the motor shaft of the lifting motor. The lifting guide column is fixedly installed on the lifting frame. The lifting frame is slidably installed on the lifting guide column, and the lifting frame and the lifting screw form a threaded transmission. The transverse guide column is fixedly installed on the lifting frame. The adapting slider is slidably installed on the transverse guide column. The adapting spring is disposed between the adapting slider and the lifting frame. The lifting fork is fixedly installed on the adapting slider, and the end of the lifting fork is provided with an adapting rounded corner.

5. The new energy vehicle battery pack charging and discharging detection device according to claim 4, characterized in that, The transfer mechanism also includes a movable frame, a movable motor, traveling wheels, guide balls, and a drive belt. The movable frame is fixedly installed at the bottom of the lifting frame, the movable motor is fixedly installed on the movable frame, the traveling wheels are rotatably installed on the movable frame, and the traveling wheels roll on the vertical and horizontal moving rods. The movable motor drives the traveling wheels to rotate through the drive belt, and the guide balls are rotatably installed at the bottom of the movable base, and the guide balls slide in the vertical and horizontal moving grooves.

6. The new energy vehicle battery pack charging and discharging detection device according to claim 5, characterized in that, The transfer mechanism also includes a rotary motor, a motor gear, a rotary gear, a rotary guide wheel, and a bottom rotating wheel. The rotary motor is fixedly mounted on the bottom fixed plate, the motor gear is fixedly mounted on the motor shaft of the rotary motor, the rotary gear is fixedly mounted on the bottom of the lifting frame, the rotary gear meshes with the motor gear, the bottom rotating wheel is rotatably mounted on the bottom of the lifting frame, the rotary guide wheel is rotatably mounted below the lifting frame, the vertical moving rod moves along the inner wall of the moving base, and the bottom rotating wheel rolls along the upper surface of the moving base.

7. The new energy vehicle battery pack charging and discharging detection device according to claim 1, characterized in that, The charging and discharging mechanism also includes a heat dissipation motor, a heat dissipation impeller, and a charging and discharging detector. Multiple heat dissipation impellers are rotatably mounted on the testing frame, and multiple heat dissipation motors are fixedly mounted on the testing frame. The heat dissipation impellers are fixedly mounted to the motor shafts of the heat dissipation motors. The charging and discharging detector is located next to the testing frame, and the testing connector is electrically connected to the charging and discharging detector.

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