Power-on test device of new energy battery pack

Abstract

The invention discloses a power-on testing device for a new energy battery pack, and relates to the field of battery power-on detection, the power-on testing device comprises a conveying line body, a continuous transmission conveying belt is arranged at the center of the conveying line body, a plurality of groups of limiting foot blocks distributed at equal intervals are fixedly arranged on the outer surface of the conveying belt, and the number of each group of limiting foot blocks is four; the battery modules are movably embedded among the four limiting foot blocks, the limiting foot blocks on the conveying belt can play a role in limiting the battery modules, the power-on connecting units can be triggered in the conveying process, the two battery contacts can be effectively in butt joint with a power-on testing host, and therefore power-on testing operation is conducted; and when the test is completed and the power-on connection unit is driven to be separated from the battery contact, the heat dissipation unit can be triggered instantly, so that the heat dissipation efficiency of the power-on test host can be further improved on the basis of original heat dissipation, and the stability of power-on test operation is ensured.

Description

Technical Field

[0001] The present invention relates to the field of battery power-on detection, and in particular to a power-on test device for a new energy battery pack. Background Art

[0002] New energy battery packs can be used as power batteries for new energy vehicles. New energy battery packs can be new energy battery modules composed of several single batteries, and multiple new energy battery modules are spliced ​​and assembled to obtain a complete new energy battery pack.

[0003] Before the new energy battery modules are assembled into a complete driving battery pack, they need to be powered on and tested. The purpose of the power-on test is to ensure that each battery module is charged and discharged normally, thereby ensuring that the new energy driving battery pack can leave the factory in a qualified manner. The power-on test of the new energy battery module is usually carried out on a non-static conveyor line. During the conveying process of several new energy battery modules on the line, the testing mechanism on the line will dock with the two poles of the new energy battery module to carry out the test operation. The existing Chinese public patent document: a battery pack charging and discharging test mechanism (CN220357113U), the testing mechanism designed on the line can adjust the distance between the two electrode contact ends, so as to adapt to the docking power-on test of new energy battery modules of different models, but in the public document, the positions of the two test ends are relatively fixed after the adjustment is completed, and it is necessary to wait for the new energy battery module to be automatically transmitted and approached, and the power-on docking between the new energy battery module and the testing mechanism is a fitting docking, which is not very tight. Coupled with the start-stop error of the conveyor line, it is easy to have poor contact when the new energy battery module and the contact end of the testing mechanism are docked (such as loose docking, not tight enough, small effective contact area of ​​docking, etc.), thereby affecting the normal power-on test process. Summary of the invention

[0004] The object of the present invention is to provide a power-on test device for a new energy battery pack to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power-on test device for a new energy battery pack, comprising: a conveyor line body, a continuously driven conveyor belt is arranged at the center of the conveyor line body, and a plurality of groups of equally spaced limit foot blocks are fixedly arranged on the outer surface of the conveyor belt, and the number of limit foot blocks in each group is four, and they are arranged in a matrix, and a battery module is movably installed between the four limit foot blocks, and a mounting frame is installed on one side wall of the conveyor line body, and two battery contacts are fixedly arranged on one side wall of the battery module, and the battery contacts are located on the side of the battery module close to the mounting frame, and a power-on test host for powering on the battery module is fixedly arranged on the upper end surface of the mounting frame, wherein the power-on test host is an existing commonly used power-on test device, which can detect whether the charging and discharging of the battery module is normal; It also includes: an electrical connection unit, which is used for the two battery contacts to be electrically connected to the power-on test host in a stable manner, and the electrical connection unit is arranged between the power-on test host and the transmission line body; The heat dissipation unit is used to improve the heat dissipation effect of the power-on test host during operation, and the heat dissipation unit is arranged between the power-on connection unit and the power-on test host.

[0006] Preferably, the electrically connected unit includes a pneumatic push rod fixedly arranged on the upper end surface of the mounting frame, and the telescopic end of the pneumatic push rod faces the conveyor line body, and the telescopic end fixing frame of the pneumatic push rod is equipped with a frame, an optical axis is fixedly inserted inside the frame, and a first test docking block is slidably sleeved on the outer surface of the optical axis, one end of the first test docking block close to the conveyor line body, and the upper and lower ends of the first test docking block extend out of the frame, one end of the optical axis is provided with a cylinder, and the cylinder is fixedly connected to the frame, and a first spring is provided between the side of the first test docking block away from the cylinder and the frame The inside of the cylinder is slidably equipped with a piston block, and the top of the piston block is fixedly provided with a connecting rod that slides through the cylinder, and the top of the connecting rod is fixedly provided with a second test docking block, the bottom of the cylinder is provided with a through hole, and a second spring is fixedly provided between the upper end surface of the piston block and the cylinder, the second test docking block and the first test docking block are close to the conveying line body and the end surface away from the first spring are both provided with energized spring sheets, and the first test docking block and the cylinder and the connecting rod are respectively provided with a lifting component and a limiting component, and the telescopic end of the pneumatic push rod can carry the frame and the cylinder away from the conveying line body at the same time.

[0007] Preferably, one end of the two power-carrying springs is fixedly connected to the first test docking block and the second test docking block respectively, and the other end is slidably inserted into the interior of the second test docking block and the power-carrying spring respectively, and the distance between the bottom of the second test docking block and the mounting frame plate is greater than the distance between the bottom of the first test docking block and the mounting frame plate, that is, the power-carrying spring has better elastic deformation ability on the first test docking block and the second test docking block, so that the pressure on the contact surface of the two with the battery contacts is greater.

[0008] Preferably, the limiting component includes a positioning column fixedly arranged on the top of the cylinder, and the outer surface of the positioning column is elastically rotatably equipped with a turntable through a torsion spring, the upper end surface of the turntable is fixedly provided with a first gear, the top side wall of the first test docking block is fixedly provided with a cross bar, and the interior of the cross bar is elastically rotatably equipped with a plurality of movable ratchets distributed in a straight line and equidistantly, the movable ratchets are movably engaged with the first gear, the outer surface of the connecting rod is provided with an annular groove, and the interior of the turntable is radially slidably equipped with a positioning block, and the end of the positioning block close to the positioning column is engaged with the turntable A third spring is fixedly arranged therebetween, and the locking block is tapered on one side close to the connecting rod, and the tapered part of the locking block is movably embedded in the annular groove. When it moves away from the cylinder, it can mesh and rotate with the first gear through a plurality of movable ratchets inside the cross bar. When the cross bar is reset, its movable ratchets elastically retract into the inside of the cross bar and cannot drive the first gear to rotate. The torsion spring between the positioning column and the turntable can allow the first gear to deflect and, when it is no longer restricted, the torsion spring can reset and rotate with the turntable, and the elastic stiffness of the torsion spring is greater than the elastic stiffness of the third spring.

[0009] Preferably, the lifting component includes an air cylinder fixedly arranged on the frame frame near the mounting frame plate, and a piston disk is provided in front of the air cylinder for sliding inside, the piston disk and the first test docking block are fixedly connected with a bent rod at one end away from the cylinder, and the bent rod slides through the air cylinder, and the air cylinder is fixedly connected with a first through pipe and a second through pipe at one end close to the cylinder, the first through pipe is fixedly connected with the bottom outer surface of the cylinder, and the outside of the first through pipe is equipped with a first one-way valve that plays a flow limiting role, and the end of the second through pipe that is away from the air cylinder is equipped with a second one-way valve that plays a flow limiting role, and the bottom outer surface of the cylinder is also equipped with a pressure relief valve that plays a pressure relief role, and a plugging component that seals the through hole is provided inside the mounting frame plate, the first one-way valve only allows the gas inside the air cylinder to be transported to the inside of the cylinder, and the second one-way valve only allows outside air to enter the interior of the air cylinder through the second through pipe.

[0010] Preferably, the pressure relief critical value of the pressure relief valve is p1, the pressure driving the piston block to move upward to the top is p2, and p2≤p1. When the plugging component closes the through hole, the bottom space of the piston block 17 is a closed space.

[0011] Preferably, the plugging component is located on an assembly rod on a side of the column away from the conveyor line body, and the assembly rod is fixedly mounted inside the mounting frame plate, an outer surface of the assembly rod is axially slidably mounted with a dome sleeve, and a tension spring is fixedly arranged between the bottom of the assembly rod and the inside of the dome sleeve, the dome portion of the dome sleeve is movably mounted with the through hole, when the frame and the column move away from the conveyor line body, the bottom of the column gradually contacts the top of the dome sleeve, and when the first test docking block and the second test docking block are just completely separated from the battery contacts, the dome sleeve at this time just blocks the through hole through the tension spring.

[0012] Preferably, the elastic stiffness of the first spring is greater than the elastic stiffness of the second spring to ensure that after the first spring in a compressed state is released, the elastic force generated can overcome the elastic force of the second spring, allowing it to compress the second spring upward through the piston block.

[0013] Preferably, the heat dissipation unit includes at least two heat dissipation through-hole groups opened on the outer surface of the power-on test host, wherein a wind tube is arranged on the periphery of one of the heat dissipation through-hole groups, and the wind tube is fixedly connected to the power-on test host, the wind tube is located on the side of the power-on test host close to the conveying line body, and a spring drive is fixedly arranged on one end of the wind tube close to the conveying line body, the output end of the spring drive is rotatably embedded in the interior of the wind tube, and the output end of the spring drive is fixedly equipped with a blade wheel, and the output end of the spring drive is fixedly covered with a second gear, and a driving component is arranged between the curved rod and the second gear. The existing power-on test host is standardly equipped with a cooling fan and a heat dissipation through-hole group, but the design of the blade wheel can improve the heat dissipation efficiency of the power-on test host.

[0014] Preferably, a tooth plate is provided between the second gear and the frame, a connecting plate is fixedly provided between the end of the tooth plate away from the column and the curved rod, the connecting plate is located below the second gear, the connecting plate includes a smooth portion and a toothed portion, and the toothed portion is movably engaged with the second gear, that is, during the battery module testing phase, the tooth plate and the second gear are staggered and separated, and when the frame moves, it can move with the tooth plate to directly below the second gear, and the smooth portion of the tooth plate is directly below the second gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The limiting foot blocks on the conveyor belt in the present invention can limit the battery module and can trigger the power-on connection unit during the transmission process, so that the two battery contacts can effectively dock with the power-on test host, thereby performing the power-on test operation. When the test is completed and the power-on connection unit is driven to separate from the battery contacts, the heat dissipation unit can also be instantly triggered, so that the power-on test host can further improve the heat dissipation efficiency on the basis of the original heat dissipation, thereby ensuring the stability of the power-on test operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the distribution structure of the limit foot blocks of the present invention on the conveyor belt; Figure 2 This is a schematic diagram of the mounting frame structure of the present invention; Figure 3 It is a schematic diagram of the structure of the battery contact, the first test docking block and the second test docking block of the present invention; Figure 4 This is a schematic diagram of the structure of the energized spring of the present invention; Figure 5 It is a schematic diagram of the internal structure of the frame, cylinder column and gas cylinder of the present invention; Figure 6 It is a schematic diagram of the structure of the cross bar, the movable ratchet and the first gear of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the position distribution structure of the plugging components of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle; Fig.10 This is a schematic diagram of the structure of the connecting plate and the tooth plate of the present invention; Fig.11 For the present invention Fig.10 Enlarged view of point C in the middle.

[0017] In the figure: 1, conveyor line body; 2, conveyor belt; 3, limit foot block; 4, battery module; 5, battery contact; 6, mounting frame; 7, power-on test host; 8, frame; 9, pneumatic push rod; 10, first test docking block; 11, second test docking block; 12, power-on spring; 13, optical axis; 14, first spring; 15, cylinder; 16, connecting rod; 17, piston block; 18, second spring; 19, through hole; 20 , pressure relief valve; 21, air cylinder; 22, piston disc; 23, curved rod; 24, cross bar; 25, movable ratchet; 26, positioning column; 27, turntable; 28, first gear; 29, ring groove; 30, blocking block; 31, third spring; 32, assembly rod; 33, dome sleeve; 34, tension spring; 35, connecting plate; 36, tooth plate; 37, wind tube; 38, blade wheel; 39, spring drive; 40, second gear. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-Figure 9 , a power-on test device for a new energy battery pack shown in the figure comprises: a conveyor line body 1, a continuously driven conveyor belt 2 is arranged at the center of the conveyor line body 1, and a plurality of groups of equally spaced limit foot blocks 3 are fixedly arranged on the outer surface of the conveyor belt 2, and the number of each group of limit foot blocks 3 is four, and they are arranged in a matrix, and a battery module 4 is movably mounted between the four limit foot blocks 3, and a mounting frame plate 6 is mounted on one side wall of the conveyor line body 1, and two battery contacts 5 are fixedly arranged on one side wall of the battery module 4, and the battery contacts 5 are located on a side of the battery module 4 close to the mounting frame plate 6, and a power-on test host 7 for power-on test of the battery module 4 is fixedly arranged on the upper end surface of the mounting frame plate 6, wherein the power-on test host 7 is an existing commonly used power-on test device, which can detect whether the charging and discharging of the battery module 4 is normal; It also includes: an electrical connection unit, which is used for the two battery contacts 5 to be electrically connected to the power-on test host 7 in a stable manner, and the electrical connection unit is arranged between the power-on test host 7 and the transmission line body 1; The heat dissipation unit is used to improve the heat dissipation effect during the operation of the power-on test host 7. The heat dissipation unit is arranged between the power-on connection unit and the power-on test host 7.

[0020] The powered connection unit includes a pneumatic push rod 9 fixedly arranged on the upper end surface of the mounting frame 6, and the telescopic end of the pneumatic push rod 9 faces the conveyor line body 1, and the telescopic end of the pneumatic push rod 9 is fixedly mounted on a frame 8, and an optical axis 13 is fixedly inserted inside the frame 8, and a first test docking block 10 is slidably mounted on the outer surface of the optical axis 13, and the first test docking block 10 is close to one end of the conveyor line body 1, and the upper and lower ends of the first test docking block 10 extend out of the frame 8, a column 15 is arranged at one end of the optical axis 13, and the column 15 is fixedly connected to the frame 8, and a first spring 14 is arranged between the side of the first test docking block 10 away from the column 15 and the frame 8, and the inner sliding of the column 15 It is equipped with a piston block 17, and a connecting rod 16 that slides through the cylinder 15 is fixedly arranged on the top of the piston block 17, and a second test docking block 11 is fixedly mounted on the top of the connecting rod 16. A through hole 19 is opened at the bottom of the cylinder 15, and a second spring 18 is fixedly arranged between the upper end face of the piston block 17 and the cylinder 15. The second test docking block 11 and the first test docking block 10 are close to the conveyor line body 1 and the end face away from the first spring 14 are both provided with an energized spring sheet 12. A lifting component and a limiting component are respectively arranged between the first test docking block 10 and the cylinder 15 and the connecting rod 16. The telescopic end of the pneumatic push rod 9 can carry the frame 8 and the cylinder 15 away from the conveyor line body 1 at the same time.

[0021] One end of the two energized springs 12 is fixedly connected to the first test docking block 10 and the second test docking block 11 respectively, and the other end is slidably inserted into the second test docking block 11 and the energized spring 12 respectively. The distance between the bottom of the second test docking block 11 and the mounting frame plate 6 is greater than the distance between the bottom of the first test docking block 10 and the mounting frame plate 6, that is, the energized spring 12 has better elastic deformation ability on the first test docking block 10 and the second test docking block 11, so that the pressure on the contact surface between the two and the battery contact 5 is greater.

[0022] The limiting component includes a positioning column 26 fixedly arranged on the top of the cylinder 15, and the outer surface of the positioning column 26 is elastically rotatably equipped with a turntable 27 through a torsion spring, and the upper end surface of the turntable 27 is fixedly provided with a first gear 28, and the top side wall of the first test docking block 10 is fixedly provided with a cross bar 24, and the inside of the cross bar 24 is elastically rotatably equipped with a plurality of movable ratchets 25 distributed in a straight line and equidistantly, and the movable ratchets 25 are movably engaged with the first gear 28, and the outer surface of the connecting rod 16 is provided with an annular groove 29, and the inside of the turntable 27 is radially slidably equipped with a card block 30, and a third elastic card block 30 is fixedly provided between the end of the card block 30 close to the positioning column 26 and the turntable 27. The locking block 30 is tapered on one side close to the connecting rod 16, and the tapered part of the locking block 30 is movably embedded in the annular groove 29. When it moves away from the cylinder 15, it can engage and rotate with the first gear 28 through a plurality of movable ratchets 25 inside the cross bar 24. When the cross bar 24 is reset, its movable ratchets 25 resiliently retract to the inside of the cross bar 24 and cannot drive the first gear 28 to rotate. The torsion spring between the positioning column 26 and the turntable 27 can allow the first gear 28 to deflect and no longer be restricted. The torsion spring can reset and rotate with the turntable 27, and the elastic stiffness of the torsion spring is greater than the elastic stiffness of the third spring 31.

[0023] The lifting component includes an air cylinder 21 fixedly arranged on a side of the frame 8 close to the mounting frame plate 6, and a piston disk 22 is arranged in front of the air cylinder 21 for sliding inside. The piston disk 22 and the end of the first test docking block 10 away from the column 15 are fixedly connected with a bent rod 23, and the bent rod 23 slides through the air cylinder 21. The end of the air cylinder 21 close to the column 15 is fixedly connected and equipped with a first through pipe and a second through pipe. The first through pipe is fixedly connected to the bottom outer surface of the column 15, and the outside of the first through pipe is equipped with a first one-way valve that plays a flow limiting role, and the end of the second through pipe away from the air cylinder 21 is equipped with a second one-way valve that plays a flow limiting role. The bottom outer surface of the column 15 is also equipped with a pressure relief valve 20 that plays a pressure relief role. The interior of the mounting frame plate 6 is provided with a plugging component that blocks the through hole 19. The first one-way valve only allows the gas inside the air cylinder 21 to be transported to the inside of the column 15, while the second one-way valve only allows the outside air to enter the interior of the air cylinder 21 through the second through pipe.

[0024] The pressure relief critical value of the pressure relief valve 20 is p1, and the pressure that drives the piston block 17 to move upward to the top is p2, p2≤p1. When the plugging component closes the through hole 19, the bottom space of the piston block 17 is a closed space. When the piston disc 22 transports the gas inside the gas cylinder 21 to the inside of the column 15, the internal pressure of the closed space will increase, thereby pushing the piston block 17 upward and compressing the second spring 18. Each time, the gas pressure that the gas cylinder 21 can input into the column 15 is much greater than p2. When the piston block 17 is moved to the top and the gas cylinder 21 is still inputting air pressure into the column 15, the pressure relief valve 20 is opened to maintain the air pressure inside the column 15 at or below p1.

[0025] The plugging component is located on the assembly rod 32 on the side of the column 15 away from the conveyor body 1, and the assembly rod 32 is fixedly installed inside the mounting frame plate 6. The outer surface of the assembly rod 32 is axially slidably equipped with a dome sleeve 33, and a tension spring 34 is fixedly arranged between the bottom of the assembly rod 32 and the inside of the dome sleeve 33. The dome part of the dome sleeve 33 is movably installed with the through hole 19. When the frame 8 and the column 15 move away from the conveyor body 1, the bottom of the column 15 gradually contacts the top of the dome sleeve 33. When the first test docking block 10 and the second test docking block 11 are just completely separated from the battery contact 5, the dome sleeve 33 at this time just blocks the through hole 19 through the tension spring 34.

[0026] The elastic stiffness of the first spring 14 is greater than that of the second spring 18 , so that after the first spring 14 in the compressed state is released, the elastic force generated can overcome the elastic force of the second spring 18 , allowing it to compress the second spring 18 upward through the piston block 17 .

[0027] How this solution works: when Figure 1During the counterclockwise transmission of the battery module 4 by the conveyor belt 2, due to the restriction of the battery module 4 by the limit foot block 3 and the lifting state of the second test docking block 11 in the initial state, the battery contact 5 on the left side will first contact the first test docking block 10. Since the battery module 4 is restricted inside the limit foot block 3 and is continuously transmitted, that is, the battery module 4 can push the first test docking block 10 through the battery contact 5 on the left side and compress the first spring 14. During the displacement of the first test docking block 10, the movable ratchet 25 inside the cross bar 24 can immediately trigger the first gear 28 and the turntable 27 to deflect. At the moment when the deflection occurs, the positioning block 30 is disengaged from the inside of the annular groove 29, that is, the connecting rod 16 is no longer restricted, and the connecting rod 16 moves downward rapidly under the action of the second spring 18 in the compressed state, and at the same time brings the second test docking block 11 down. Since the second test docking block 11 falls very quickly, the second test docking block 11 can wait for the battery contact 5 on the right side to gradually approach following the transmission of the conveyor belt 2, until the two energized springs 12 are effectively in contact with the first test docking block 10 and the second test docking block 11 respectively, at this time, the conveyor belt 2 can be paused, and the battery module 4 can be charged and discharged by using the energized test host 7; The conveyor belt 2 can be designed as intermittent transmission through existing transmission means, and the length of each transmission is controllable, and the time interval of the intermittent pause is controllable, so as to achieve automatic transmission of the battery module 4, and make the two battery contacts 5 of the battery module 4 effectively dock with the two power-on springs 12 respectively. In the above docking process, since the battery contact 5 on the left first squeezes the power-on spring 12 and then pushes the first test docking block 10, the contact surface pressure between the battery contact 5 on the left and the power-on spring 12 is large; during the transmission process, the battery contact 5 on the right can also squeeze the power-on spring 12 to make it elastically deform, and the pressure on its contact surface is also large, that is, it can ensure that the two battery contacts 5 of the battery module 4 are in very close contact with the two power-on springs 12, thereby ensuring that when the power-on test host 7 performs a power-on test on the battery module 4, there will be no poor contact due to loose contact points; The second test docking block 11 and the first test docking block 10 are designed to be staggered up and down, and can adapt to different types of battery modules 4, such as: the two battery contacts 5 are not in the same horizontal plane and have different lateral spacing distances, thereby improving the application range of the power-on test device in this solution.

[0028] After the test is completed, the pneumatic push rod 9 can move the frame 8 and the cylinder 15 away from the conveyor line body 1, that is, the first test docking block 10 and the second test docking block 11 are pulled out, so that the two are separated from the battery contact 5. After separation, the conveyor belt 2 continues to transport the battery module 4 and replaces the next battery module 4 that needs to be powered on. During the movement of the frame 8 and the cylinder 15, at the moment when the first test docking block 10 and the second test docking block 11 are completely separated from the battery contact 5, the through hole 19 at the bottom of the cylinder 15 is also blocked by the dome sleeve 33. At this time, when the first spring 14 in the compressed state brings the first test docking block 10 and the piston disk 22 to reset, high-pressure gas can be injected into the interior of the cylinder 15, and the piston block 17 can be pushed upward, so that the locking block 30 can be re-embedded into the interior of the annular groove 29 to re-restrict the connecting rod 16. Example 2: Please refer to Fig.10 and Fig.11 This embodiment is a further explanation of embodiment 1. The heat dissipation unit includes at least two heat dissipation through-hole groups opened on the outer surface of the power-on test host 7, wherein a wind tube 37 is arranged on the periphery of one of the heat dissipation through-hole groups, and the wind tube 37 is fixedly connected to the power-on test host 7, and the wind tube 37 is located on the side of the power-on test host 7 close to the conveying line body 1, and a spring driver 39 is fixedly arranged on one end of the wind tube 37 close to the conveying line body 1, and the output end of the spring driver 39 is rotatably embedded in the interior of the wind tube 37, and the output end of the spring driver 39 is fixedly equipped with a blade wheel 38, and the output end of the spring driver 39 is fixedly covered with a second gear 40, and a driving component is arranged between the bent rod 23 and the second gear 40. The existing power-on test host 7 is standardly equipped with a heat dissipation fan and a heat dissipation through-hole group, but the design of the blade wheel 38 can improve the heat dissipation efficiency of the power-on test host 7.

[0029] A tooth plate 36 is provided between the second gear 40 and the frame 8, and a connecting plate 35 is fixedly provided between the end of the tooth plate 36 away from the column 15 and the curved rod 23, and the connecting plate 35 is located below the second gear 40. The connecting plate 35 includes a smooth portion and a toothed portion, and the toothed portion is movably engaged with the second gear 40, that is, during the testing phase of the battery module 4, the tooth plate 36 and the second gear 40 are staggered and separated, and when the frame 8 moves, it can move with the tooth plate 36 to the bottom of the second gear 40, and the smooth portion of the tooth plate 36 is located directly below the second gear 40.

[0030] In this embodiment: the width of the tooth plate 36 in this solution is greater than the thickness of the second gear 40, that is, when the first test docking block 10 and the second test docking block 11 have not been completely separated from the battery contact 5, the smooth part of the tooth plate 36 is already below the second gear 40, and when the first test docking block 10 and the second test docking block 11 are completely separated from the battery contact 5, the curved rod 23 will also move synchronously with the tooth plate 36, and drive the second gear 40 to rotate through the meshing part on the tooth plate 36, which is the internal part of the clockwork driver 39 The spring is tightened, and when the next battery module 4 needs to be tested, the pneumatic push rod 9 pushes the frame 8 and the cylinder 15 toward the conveyor line body 1 again, so that the meshing portion of the tooth plate 36 is separated from the second gear 40. At this time, the tightened spring driver 39 can drive the blade wheel 38 to rotate, thereby improving the heat dissipation effect of the powered test host 7; the spring driver 39 in this solution adopts the existing spring drive mechanism in the children's toy car (product number 2016152203017157).

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power-on test device for a new energy battery pack, characterized in that: include: A conveyor line body (1), wherein a continuously driven conveyor belt (2) is arranged at the center of the conveyor line body (1), and a plurality of groups of equally spaced limit foot blocks (3) are fixedly arranged on the outer surface of the conveyor belt (2), wherein each group of the limit foot blocks (3) has four limit foot blocks (3) arranged in a matrix, and a battery module (4) is movably mounted between the four limit foot blocks (3); a mounting frame plate (6) is mounted on one side wall of the conveyor line body (1), and two battery contacts (5) are fixedly arranged on one side wall of the battery module (4), and the battery contacts (5) are located on a side of the battery module (4) close to the mounting frame plate (6); and a power-on test host (7) for performing a power-on test on the battery module (4) is fixedly arranged on the upper end surface of the mounting frame plate (6); Also includes: An electrical connection unit, used for stably electrically connecting the two battery contacts (5) to the electrical test host (7), respectively, the electrical connection unit being arranged between the electrical test host (7) and the transmission line body (1); A heat dissipation unit is used to improve the heat dissipation effect of the power-on test host (7) during operation, and the heat dissipation unit is arranged between the power-on connection unit and the power-on test host (7).

2. A power-on test device for a new energy battery pack according to claim 1, characterized in that: The energized connection unit comprises a pneumatic push rod (9) fixedly arranged on the upper end surface of the mounting frame (6), and the telescopic end of the pneumatic push rod (9) faces the conveyor line body (1), and the telescopic end of the pneumatic push rod (9) is fixedly mounted on a frame (8), an optical axis (13) is fixedly inserted inside the frame (8), and a first test docking block (10) is slidably mounted on the outer surface of the optical axis (13), one end of the first test docking block (10) close to the conveyor line body (1), and both upper and lower ends of the first test docking block (10) extend out of the frame (8), one end of the optical axis (13) is provided with a column (15), and the column (15) is fixedly connected to the frame (8), and a side of the first test docking block (10) away from the column (15) is provided between the frame (8) and the frame (8). A first spring (14) is arranged, a piston block (17) is slidably mounted inside the cylinder (15), and a connecting rod (16) is fixedly arranged on the top of the piston block (17) and is slidably penetrated through the cylinder (15), a second test docking block (11) is fixedly sleeved on the top of the connecting rod (16), a through hole (19) is opened at the bottom of the cylinder (15), and a second spring (18) is fixedly arranged between the upper end surface of the piston block (17) and the cylinder (15), the second test docking block (11) and the first test docking block (10) are both provided with a power-carrying spring sheet (12) at a portion close to the conveying line body (1) and an end surface away from the first spring (14), and a lifting component and a limiting component are respectively arranged between the first test docking block (10), the cylinder (15) and the connecting rod (16).

3. A power-on test device for a new energy battery pack according to claim 2, characterized in that: One end of each of the two energized springs (12) is fixedly connected to the first test docking block (10) and the second test docking block (11), respectively, and the other end is slidably inserted into the second test docking block (11) and the energized spring (12), respectively, and the distance between the bottom of the second test docking block (11) and the mounting frame plate (6) is greater than the distance between the bottom of the first test docking block (10) and the mounting frame plate (6).

4. The power-on test device for a new energy battery pack according to claim 2, characterized in that: The limiting component comprises a positioning column (26) fixedly arranged on the top of the cylinder (15), and the outer surface of the positioning column (26) is equipped with a rotating disk (27) through a torsion spring, and the upper end surface of the rotating disk (27) is fixedly provided with a first gear (28), and the top side wall of the first test docking block (10) is fixedly provided with a cross bar (24), and the interior of the cross bar (24) is elastically rotatably equipped with a plurality of movable ratchets (25) distributed in a straight line and at equal intervals, and the movable ratchets (25) are The connecting rod (16) is movably engaged with the first gear (28), an annular groove (29) is formed on the outer surface of the connecting rod (16), a positioning block (30) is radially slidably mounted inside the rotating disk (27), a third spring (31) is fixedly arranged between an end of the positioning block (30) close to the positioning column (26) and the rotating disk (27), a side of the positioning block (30) close to the connecting rod (16) is conical, and the conical portion of the positioning block (30) is movably embedded in the annular groove (29).

5. The power-on test device for a new energy battery pack according to claim 2, characterized in that: The lifting component comprises an air cylinder (21) fixedly arranged on a side of the frame (8) close to the mounting frame plate (6), and a piston disc (22) is provided inside the air cylinder (21) for sliding, the piston disc (22) and the end of the first test docking block (10) away from the cylinder column (15) are fixedly connected with a bent rod (23), and the bent rod (23) slides through the air cylinder (21), and the end of the air cylinder (21) close to the cylinder column (15) is fixedly connected with a first through pipe and a second through pipe, the first through pipe is fixedly connected with the bottom outer surface of the cylinder column (15), and the outside of the first through pipe is provided with a first one-way valve having a flow limiting function, and the end of the second through pipe away from the air cylinder (21) is provided with a second one-way valve having a flow limiting function, and the bottom outer surface of the cylinder column (15) is also provided with a pressure relief valve (20) having a pressure relief function, and a plugging component having a blocking function for the through hole (19) is provided inside the mounting frame plate (6).

6. The power-on test device for a new energy battery pack according to claim 5, characterized in that: The pressure relief threshold value of the pressure relief valve (20) is p1, and the pressure driving the piston block (17) to move upward to the top is p2; Said p2≤p1.

7. The power-on test device for a new energy battery pack according to claim 5, characterized in that: The plugging component is located on an assembly rod (32) on a side of the cylinder (15) away from the conveyor line body (1), and the assembly rod (32) is fixedly mounted inside the mounting frame plate (6). The outer surface of the assembly rod (32) is axially slidably mounted with a dome sleeve (33), and a tension spring (34) is fixedly arranged between the bottom of the assembly rod (32) and the inside of the dome sleeve (33), and the dome portion of the dome sleeve (33) is movably mounted with the through hole (19).

8. The power-on test device for a new energy battery pack according to claim 5, characterized in that: The elastic stiffness of the first spring (14) is greater than the elastic stiffness of the second spring (18).

9. The power-on test device for a new energy battery pack according to claim 5, characterized in that: The heat dissipation unit comprises at least two heat dissipation through hole groups formed on the outer surface of the power-on test host (7), wherein a wind tube (37) is arranged on the periphery of one of the heat dissipation through hole groups, and the wind tube (37) is fixedly connected to the power-on test host (7), and the wind tube (37) is located on a side of the power-on test host (7) close to the conveying line body (1), and a spring driver (39) is fixedly arranged at one end of the wind tube (37) close to the conveying line body (1), and the output end of the spring driver (39) is rotatably embedded in the interior of the wind tube (37), and the output end of the spring driver (39) is fixedly equipped with a blade wheel (38), and the output end of the spring driver (39) is fixedly sleeved with a second gear (40), and a driving component is arranged between the curved rod (23) and the second gear (40).

10. A power-on test device for a new energy battery pack according to claim 9, characterized in that: A toothed plate (36) is provided between the second gear (40) and the frame (8); a connecting plate (35) is fixedly provided between an end of the toothed plate (36) away from the column (15) and the curved rod (23); the connecting plate (35) is located below the second gear (40); the connecting plate (35) comprises a smooth portion and a toothed portion, and the toothed portion is movably engaged with the second gear (40).

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