Lithium battery deep discharge safety detection equipment

Abstract

The invention relates to the technical field of lithium battery discharge detection, in particular to lithium battery deep discharge safety detection equipment, which comprises a detection frame and six lithium battery blocks, the detection frame is fixedly connected with a discharge detector, the detection frame is provided with a positioning mechanism for limiting the positions of the lithium battery blocks, a fixed frame is arranged above the detection frame, and the fixed frame is fixedly connected with the discharge detector. Through the arrangement of the positioning mechanism, the series connection mechanism and other structures, detection personnel only need to place lithium battery blocks on the detection frame according to the series connection sequence, then press the E-shaped plate downwards, press the upper connecting plate and the lower connecting plate downwards to the positive side or the negative side of the lithium battery blocks, and then the lithium battery blocks can be detected through the positioning mechanism and the series connection mechanism. Then the E-shaped plate is pushed, the upper connecting plate and the lower connecting plate are pushed into the serial connection position of the lithium battery blocks, and at the moment, the serial connection mechanism limits the position of the E-shaped plate, so that rapid serial connection of a plurality of lithium battery blocks is realized, one-by-one connection by using tools is not needed, and the detection efficiency of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery discharge detection, and particularly relates to a lithium battery deep discharge safety detection device. BACKGROUND

[0002] With the rapid development of new energy technology, lithium batteries, as an efficient and environmentally friendly energy storage device, have been widely used in electric vehicles, mobile devices, energy storage systems and other fields. However, lithium batteries will gradually age and degrade in performance during use, and eventually become waste lithium batteries. Waste lithium batteries contain a large amount of valuable metal resources such as lithium, cobalt and nickel. Recycling and reusing waste lithium batteries can not only reduce resource waste but also reduce environmental pollution. Therefore, effective discharge safety detection of waste lithium batteries is an important link to realize their recycling and reuse.

[0003] In many practical applications, such as electric vehicles or large-scale energy storage systems, batteries are usually used in series. Therefore, when detecting lithium batteries, multiple lithium batteries are usually used for discharge testing in series, which can more accurately simulate the performance of the batteries under actual use conditions.

[0004] However, the traditional lithium battery discharge detection method usually requires the detection personnel to place multiple groups of lithium batteries on the detection rack, and then connect all the lithium batteries in series. During the series connection process, the wires need to be installed in the specified position, and then the wire pressing bolts on the lithium batteries are tightened using tools. This not only wastes time and effort, but also reduces the detection efficiency. In addition, manual operation may cause physical damage to the lithium batteries during the series connection process, increasing the safety risk.

[0005] Therefore, a lithium battery deep discharge safety detection device is proposed to solve the above problems. SUMMARY

[0006] The present application aims to solve the shortcomings in the background art and proposes a lithium battery deep discharge safety detection device.

[0007] To achieve the above object, the technical scheme adopted by the present application is: a lithium battery deep discharge safety detection equipment, comprising a detection frame and a lithium battery block, the detection frame is fixedly connected with a discharge detector, the lithium battery block is provided with six, the detection frame is provided with a positioning mechanism for limiting the position of the lithium battery block, the upper side of the detection frame is provided with a fixed frame, the two sides of the fixed frame and the top end of the detection frame are fixedly connected with support frames, the upper side of the lithium battery block is respectively provided with three U-shaped upper connecting plates and a pair of U-shaped lower connecting plates, the outer wall of the upper connecting plate and the lower connecting plate is provided with an insulating layer, the top end of the insulating layer is fixedly connected with a connecting frame, the inner side of the fixed frame is longitudinally slidably connected with a sliding frame, the inner side of the sliding frame is transversely slidably connected with a moving block, and the bottom end of the moving block is fixedly connected with the top end of the connecting frame, the fixed frame is provided with a series mechanism for driving the positive and negative electrodes of the upper connecting plate and the lower connecting plate to be connected with the lithium battery block.

[0008] In the above technical scheme, further, the top end of the detection frame is fixedly connected with a plurality of baffles, and the six lithium battery blocks are placed between the baffles on the detection frame.

[0009] In the above technical scheme, further, the series mechanism comprises a mountain-shaped plate, the side wall of the moving block is provided with a circular hole, the two ends of the inner side of the circular hole are slidably connected with circular rods, the circular rods are fixedly connected with series springs, the outer wall of the sliding frame is provided with straight grooves on both sides, the fixed frame is provided with vertical grooves on both sides, and the side ends of the circular rods are inserted into the vertical grooves through the straight grooves, the bottom end of the side wall of the vertical groove is provided with a horizontal groove, the horizontal groove is provided with an inclined groove between the end and the top end of the vertical groove, the front side of the fixed frame is provided with three sliding grooves, the mountain-shaped plate is inserted into the inner side of the three sliding grooves, and the side wall of the mountain-shaped plate is fixedly connected with the side wall of the moving block, the inner bottom end of the inclined groove is provided with a groove, the fixed frame is provided with a cavity relative to the position beside the inclined groove, the inner side of the cavity is slidably connected with a limiting block, and the side end of the limiting block is provided through the inner side of the inclined groove.

[0010] In the above technical scheme, further, the horizontal groove is provided with a depth greater than the vertical groove, and the top end of the groove is inclinedly connected with the inner side of the inclined groove, and the distal end of the circular rod is provided as a smooth circular arc surface.

[0011] In the above technical scheme, further, the bottom end of the limiting block is flush with the top end of the horizontal groove, the bottom end of the cavity is fixedly connected with an upper electric telescopic cylinder, the output end of the upper electric telescopic cylinder is fixedly connected with a release plate, and the limiting block is fixedly connected to the side wall of the release plate.

[0012] In the above technical scheme, further, the top end of the fixed frame and the top end of the sliding frame are fixedly connected with a plurality of upper springs, and the inner side of the sliding frame and the side wall of the moving block are fixedly connected with a plurality of lower springs.

[0013] Further in the technical scheme, the positioning mechanism comprises a positioning rod, both ends of the inner side of the detection frame are provided with a push groove matched with the positioning rod, the front side of the detection frame is fixedly connected with a positioning frame beside the push groove, the side away from the positioning frame is threadedly connected with a bolt, the positioning rod is inserted into the inner side of the positioning frame, the rear side of the detection frame is provided with a conveying line for conveying the lithium battery blocks, the rear side of the detection frame is provided with a bottom groove, the inner side of the bottom groove is longitudinally slidably connected with a limiting plate, both sides of the bottom groove are fixedly connected with a lower electric telescopic cylinder, and the output end of the lower electric telescopic cylinder is fixedly connected to the top end of the limiting plate.

[0014] Further in the technical scheme, the inner side of the positioning frame is transversely slidably connected with a T-shaped block, both sides of the positioning rod are provided with an insertion groove, and the insertion groove is obliquely arranged close to the detection frame, the T-shaped block is obliquely arranged close to the detection frame, and the side end of the bolt is rotatably connected to the side wall of the T-shaped block.

[0015] Further in the technical scheme, the bottom end of the detection frame is fixedly connected with a plurality of U-shaped hangers for placing the positioning rods, and the front side of the positioning rod is fixedly connected with a pair of handles.

[0016] Compared with the prior art, the present application has the following advantages: 1. By arranging the positioning mechanism and the series connection mechanism, the detection personnel only needs to place the lithium battery blocks on the detection frame according to the series connection order, then press the X-shaped plate downward to press the upper connecting plate and the lower connecting plate to the positive or negative side of the lithium battery block, then push the X-shaped plate to push the upper connecting plate and the lower connecting plate into the series connection position of the lithium battery block, and the series connection mechanism can limit the position of the X-shaped plate, thereby realizing the rapid series connection of multiple lithium battery blocks without using tools one by one, and greatly improving the detection efficiency of the device.

[0017] 2. By arranging the positioning rod and the upper electric telescopic cylinder, the limitation of the X-shaped plate can be automatically released after the discharge detection is completed, and the upper connecting plate and the lower connecting plate can be driven to move away from the positive or negative side of the lithium battery block, then the positioning of the positioning rod is released, the lower electric telescopic cylinder is controlled to retract, the limitation of the lithium battery block is released, the positioning rod is pushed to slide in the push groove, and multiple lithium battery blocks are quickly pushed into the conveying line, thereby realizing the rapid discharge of the lithium battery blocks and further improving the detection efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front perspective structure schematic view of the detection equipment of the present application; Figure 2 It is a front perspective structure schematic view of the detection equipment of the present application; Figure 1 It is a front perspective structure schematic view of the detection equipment of the present application; Figure 3It is a rear view perspective structural schematic diagram of the detection equipment of the present application; Figure 4 It is a top view partial cutaway perspective structural schematic diagram of the detection frame of the present application; Figure 5 It is a rear view perspective structural schematic diagram of the detection frame of the present application; Figure 6 It is a partial perspective structural schematic diagram of the positioning rod and T-shaped block of the present application; Figure 7 It is a partial cutaway perspective structural schematic diagram of the fixed frame of the present application; Figure 8 It is a top view perspective structural schematic diagram of the sliding frame and moving block of the present application; Figure 9 It is a side view full cutaway perspective structural schematic diagram of the fixed frame of the present application; Figure 10 It is a bottom view perspective structural schematic diagram of the fixed frame and support frame of the present application.

[0019] In the figure: 1, detection frame; 2, lithium battery block; 3, discharge detector; 4, baffle; 5, fixed frame; 6, support frame; 7, upper connecting plate; 8, lower connecting plate; 9, insulation layer; 10, connecting frame; 11, sliding frame; 12, moving block; 13, N-shaped plate; 14, round rod; 15, series spring; 16, straight slot; 17, vertical slot; 18, horizontal slot; 19, inclined slot; 20, recess; 21, limiting block; 22, upper electric telescopic cylinder; 23, release plate; 24, upper spring; 25, lower spring; 26, positioning rod; 27, push slot; 28, positioning frame; 29, bolt; 30, conveying line; 31, limiting plate; 32, lower electric telescopic cylinder; 33, insertion slot; 34, U-shaped hanging frame; 35, handle; 36, T-shaped block. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0021] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed below.

[0022] In actual use, it was found that the traditional lithium battery discharge detection method usually requires the tester to place multiple groups of lithium batteries on the detection rack 1 and then connect all the lithium batteries in series. During the series connection process, the wires need to be installed in the specified position and then the wire-pressing bolts on the lithium battery need to be tightened with tools. This is not only time-consuming and labor-intensive, but also reduces the detection efficiency. In addition, manual operation may also cause physical damage to the lithium battery during the series connection process, increasing safety risks. In order to solve the above problems, the following structure is specially invented.

[0023] like Figures 1-10 The lithium battery deep discharge safety detection device shown in the figure includes a detection frame 1 and a lithium battery block 2. The detection frame 1 is fixedly connected to a discharge detector 3. The lithium battery discharge detector 3 discharges the battery through a simulated load and measures parameters such as voltage, current and temperature of the battery during the discharge process to evaluate the capacity, internal resistance and health status of the battery. There are six lithium battery blocks 2. The detection frame 1 is provided with a positioning mechanism for limiting the position of the lithium battery block 2. A fixed frame 5 is provided above the detection frame 1. Support frames 6 are fixedly connected between the two sides of the fixed frame 5 and the top of the detection frame 1. Three U-shaped upper connecting plates 7 and a pair of U-shaped lower connecting plates 8 are respectively provided above the lithium battery block 2 (it should be noted that in order to more stably ensure the normal series connection between the lithium battery blocks 2, the upper connecting plate 7 and the lower connecting plate 8 are connected in series. The ends of the connecting plates 8 are provided with semicircular grooves to ensure that more parts of the upper connecting plate 7 and the lower connecting plate 8 are in contact with the positive and negative electrode pressure wire bolts of the lithium battery block 2). The outer walls of the upper connecting plate 7 and the lower connecting plate 8 are provided with an insulating layer 9, and a connecting frame 10 is fixedly connected between the tops of the insulating layer 9. The connecting frame 10 is isolated from the upper connecting plate 7 and the lower connecting plate 8 by the insulating layer 9 to ensure the normal series connection between the lithium battery blocks 2. The upper connecting plate 7 and the lower connecting plate 8 are both made of conductive copper. A sliding frame 11 is longitudinally slidably connected to the inside of the fixed frame 5, and a moving block 12 is laterally slidably connected to the inside of the sliding frame 11, and the bottom end of the moving block 12 is fixedly connected to the top of the connecting frame 10. A series mechanism for driving the upper connecting plate 7 and the lower connecting plate 8 to connect to the positive and negative electrodes of the lithium battery block 2 is provided in the fixed frame 5; Several baffles 4 are fixedly connected at equal intervals to the top of the detection rack 1. The six lithium battery blocks 2 are placed between the baffles 4 on the detection rack 1. The baffles 4 can play a limiting role when the lithium battery blocks 2 are placed on the detection rack 1, ensuring the normal placement of the lithium battery blocks 2, thereby ensuring the normal operation of the subsequent series connection mechanism (it should be noted that when the six lithium battery blocks 2 are placed on the detection rack 1, the positive and negative poles of two adjacent lithium battery blocks 2 need to be staggered to ensure the normal series connection of the subsequent lithium battery pack, and the lithium battery block 2 that needs to be connected to the positive pole of the discharge detector 3 needs to be placed on the side close to the discharge detector 3 to ensure the normal operation of the subsequent series connection); The series mechanism comprises a mountain-shaped plate 13, a circular hole is formed through the side wall of the moving block 12, circular rods 14 are slidably connected to the two ends of the inner side of the circular hole, series springs 15 are fixedly connected between the circular rods 14, straight grooves 16 are formed on the two sides of the outer wall of the sliding frame 11, vertical grooves 17 are formed on the two sides of the inner side of the fixed frame 5, the side ends of the circular rods 14 are inserted into the vertical grooves 17 through the straight grooves 16, horizontal grooves 18 are formed on the bottom ends of the side walls of the vertical grooves 17, inclined grooves 19 are formed between the end portions of the horizontal grooves 18 and the top ends of the vertical grooves 17, three sliding grooves are formed on the front side of the fixed frame 5, the mountain-shaped plate 13 is inserted into the inner side of the three sliding grooves, the side wall of the mountain-shaped plate 13 is fixedly connected with the side wall of the moving block 12, a recess 20 is formed on the inner bottom end of the inclined groove 19, a cavity is formed on the inner side of the fixed frame 5 relative to the position beside the inclined groove 19, a limiting block 21 is slidably connected to the inner side of the cavity, and the side end of the limiting block 21 is arranged through the inner side of the inclined groove 19; The depth of the horizontal groove 18 is greater than the depth of the vertical groove 17, and the top end of the recess 20 is inclinedly arranged at the connection position with the inner side of the inclined groove 19, and the distal end of the circular rod 14 is arranged as a smooth arc surface; A plurality of upper springs 24 are fixedly connected between the top end of the fixed frame 5 and the top end of the sliding frame 11, and a plurality of lower springs 25 are fixedly connected between the inner side of the sliding frame 11 and the side wall of the moving block 12, so that the sliding frame 11 and the moving block 12 can be directly pulled to reset after the circular rod 14 is released from the limitation; The positioning mechanism comprises a positioning rod 26, push grooves 27 are formed on the two ends of the inner side of the detection frame 1 and are matched with the positioning rod 26, positioning frames 28 are fixedly connected to the front side of the detection frame 1 relative to the positions beside the push grooves 27, threaded bolts 29 are threadedly connected to the distal sides of the positioning frames 28, the positioning rod 26 is inserted into the inner side of the positioning frame 28, the lithium battery block 2 can be locked on the detection frame 1 through the positioning rod 26, the stability during the series connection and discharge detection is ensured, the problems in the series connection between the lithium battery blocks 2 caused by displacement are avoided, and the detection result of the discharge detection is affected, a bottom groove is formed on the rear side of the detection frame 1, a limiting plate 31 is longitudinally slidably connected to the inner side of the bottom groove, and the rear position of the lithium battery block 2 placed on the detection frame 1 is limited through the limiting plate 31; A T-shaped block 36 is transversely slidably connected to the inner side of the positioning frame 28, insertion grooves 33 are formed on the two sides of the positioning rod 26 and are inclinedly arranged on the side close to the detection frame 1, the T-shaped block 36 is inclinedly arranged on the side close to the detection frame 1, and the side end of the threaded bolt 29 is rotatably connected to the side wall of the T-shaped block 36; In the deep discharge detection of waste lithium battery, firstly, the lithium battery block 2 is installed in the detection frame 1 in series (at this time, the limiting plate 31 is in the raised state, which will limit the position behind the lithium battery block 2), then the positioning rod 26 is taken out, the positioning rod 26 is inserted into the positioning frame 28, then the bolts 29 on both sides are rotated to slide inward, the T-shaped block 36 is pushed to slide horizontally in the positioning frame 28, and then the end of the T-shaped block 36 is inserted into the slot 33 (in this process, the inclined surface of the T-shaped block 36 will press the inclined surface of the slot 33, and then push the positioning rod 26 to slide backward, tightly pressing the positioning rod 26 on the lithium battery block 2, limiting the position of the lithium battery block 2), then the mountain-shaped plate 13 is pushed downward to slide in the three sliding grooves, at the same time, the moving block 12 and the sliding frame 11 are moved downward, and the upper spring 24 is stretched (since the moving block 12 can only slide horizontally in the sliding frame 11, at this time, the sliding frame 11 slides vertically in the fixed frame 5), at the same time, the round rod 14 on both sides of the moving block 12 slides in the vertical groove 17, and the upper connecting plate 7 and the lower connecting plate 8 are moved downward through the connecting frame 10, so that the upper connecting plate 7 and the lower connecting plate 8 are moved to the position beside the series connection of the lithium battery block 2; At this time, the round rod 14 will slide out of the vertical groove 17 and slide into the horizontal groove 18, since the depth of the horizontal groove 18 is greater than the depth of the vertical groove 17, the side end of the round rod 14 will be pushed to insert into the horizontal groove 18 under the elastic force of the series spring 15 (since the horizontal groove 18 and the vertical groove 17 have a step, the upward sliding of the round rod 14 is limited, thereby limiting the upward sliding of the upper connecting plate 7 and the lower connecting plate 8), then the mountain-shaped plate 13 is pushed backward, thereby driving the moving block 12 to slide horizontally in the sliding frame 11, so that the upper connecting plate 7 and the lower connecting plate 8 are moved backward through the connecting frame 10, and the semicircular groove on the upper connecting plate 7 and the lower connecting plate 8 is inserted on the outer wall of the positive and negative electrode wire pressing screw of the lithium battery block 2, in this process, the lower spring 25 is stretched, and the round rod 14 slides in the horizontal groove 18, when the upper connecting plate 7 and the lower connecting plate 8 contact the wire pressing screw, the round rod 14 moves to the recess 20 beside the bottom end of the inclined groove 19, and then the side end of the round rod 14 is inserted into the recess 20 under the elastic force of the series spring 15 (since the recess 20 and the horizontal groove 18 have a step, the reverse movement of the round rod 14 is limited, and the limiting block 21 in the inclined groove 19 is in the extended state, thereby limiting the upward sliding of the round rod 14, thereby ensuring the position of the upper connecting plate 7 and the lower connecting plate 8); Then the mountain-shaped plate 13 is released, the rapid series connection of the plurality of lithium battery blocks 2 is completed, finally, the positive and negative electrode connecting wires on the discharge detector 3 are connected with the positive and negative electrodes of the series connected lithium battery pack, and the discharge test can be performed.

[0024] In summary, through the design of the above structure, only need to detect personnel according to the series order to put lithium battery block 2 on the detection frame 1, then press the mountain-shaped plate 13 downward, the upper connecting plate 7 and the lower connecting plate 8 are pressed to the positive or negative side of the lithium battery block 2, then push the mountain-shaped plate 13, the upper connecting plate 7 and the lower connecting plate 8 are pushed into the series position of the lithium battery block 2, at this time the series mechanism will limit the position of the mountain-shaped plate 13, thereby realizing the rapid series connection of multiple lithium battery blocks 2, without using tools one by one, greatly improving the detection efficiency of the device.

[0025] On the basis of the above embodiment, it is found that the above structure can quickly connect the lithium battery block 2 in series, but after the discharge detection is completed, the series connection between the multiple lithium battery blocks 2 needs to be released, and it is more troublesome to take out the lithium battery block 2. In order to solve the above problem, the above structure is further improved.

[0026] The detection frame 1 is provided with a conveying line 30 for conveying the lithium battery block 2, and the bottom groove is fixedly connected with a lower electric telescopic cylinder 32 on both sides, and the output end of the lower electric telescopic cylinder 32 is fixedly connected with the top end of the limiting plate 31; The bottom end of the limiting block 21 is flush with the top end of the horizontal groove 18, the bottom end of the cavity is fixedly connected with an upper electric telescopic cylinder 22, the output end of the upper electric telescopic cylinder 22 is fixedly connected with a release plate 23, and the limiting block 21 is fixedly connected with the side wall of the release plate 23; The bottom end of the detection frame 1 is fixedly connected with a plurality of U-shaped hangers 34 for placing the positioning rod 26, through the arrangement of the U-shaped hanger 34, the positioning rod 26 is conveniently stored during the placement of the lithium battery block 2, a pair of handles 35 are fixedly connected to the front side of the positioning rod 26, through the arrangement of the handle 35, the positioning rod 26 is conveniently pushed and pulled back by the detection personnel, and the convenient performance of the device is improved; After the discharge detection is completed, the positive and negative electrode connecting wires on the discharge detector 3 are taken out, the upper electric telescopic cylinder 22 is controlled to start and drive the release plate 23 to retract, at the same time, the limiting block 21 is driven to move out of the inclined groove 19, thereby releasing the upward sliding limitation of the round rod 14, then under the elastic force of the upper spring 24 and the lower spring 25, the round rod 14 slides in the inclined groove 19 to the upper inclined side, at the same time, the upper connecting plate 7 and the lower connecting plate 8 move to the upper inclined side (it should be noted that since the upper connecting plate 7 and the lower connecting plate 8 move to the upper inclined side, the upper connecting plate 7 and the lower connecting plate 8 will directly move out of the wire pressing bolt of the lithium battery block 2, and will not be hindered by the nut on the wire pressing bolt), in this process, the round rod 14 will slide out of the inclined surface at the connection between the recess 20 and the inclined groove 19, in this process, the inclined surface will extrude the round rod 14, so that the round rod 14 slides into the round hole and compresses the series spring 15, then the round rod 14 slides out of the inclined groove 19 and slides into the vertical groove 17, thereby releasing the automatic removal of the upper connecting plate 7 and the lower connecting plate 8 from the wire pressing bolt of the lithium battery block 2; Then control the lower electric telescopic cylinder 32 to start to drive the limiting plate 31 to slide downward in the bottom groove, and then remove the restriction on the rear position of the lithium battery block 2, then reverse the rotating bolt 29, pull out the T-shaped block 36 from the slot 33, remove the restriction on the positioning rod 26, finally the tester pushes the handle 35 to drive the positioning rod 26 to slide in the push slot 27, thereby driving multiple lithium battery blocks 2 to slide backward on the detection frame 1 until multiple lithium battery blocks 2 are pushed onto the conveying line 30, thereby completing the rapid discharge of the lithium battery block 2.

[0027] In summary, through the design of the above structure, after the discharge detection is completed, the restriction of the mountain-shaped plate 13 is automatically removed, and the upper connecting plate 7 and the lower connecting plate 8 are driven to move away from the positive or negative electrode of the lithium battery block 2, then the positioning rod 26 is removed, and the lower electric telescopic cylinder 32 is controlled to retract, thereby removing the restriction of the lithium battery block 2, and the positioning rod 26 is pushed to slide in the push slot 27, thereby quickly pushing multiple lithium battery blocks 2 onto the conveying line 30, achieving the rapid discharge of the lithium battery block 2, and further improving the detection efficiency of the device.

[0028] The above shows and describes the basic principles, main features and advantages of the present application.

[0029] Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A lithium battery deep discharge safety detection device, comprising a detection frame (1) and a lithium battery block (2), characterized in that: The detection frame (1) is fixedly connected to a discharge detector (3), six lithium battery blocks (2) are provided, and a positioning mechanism for limiting the position of the lithium battery block (2) is provided on the detection frame (1). A fixing frame (5) is provided above the detection frame (1), and a support frame (6) is fixedly connected between both sides of the fixing frame (5) and the top of the detection frame (1). Three U-shaped upper connecting plates (7) and a pair of U-shaped lower connecting plates (8) are provided above the lithium battery block (2). The upper connecting plates (7) An insulating layer (9) is provided on the outer wall of the lower connecting plate (8), a connecting frame (10) is fixedly connected between the top ends of the insulating layer (9), a sliding frame (11) is longitudinally slidably connected to the inner side of the fixed frame (5), a moving block (12) is transversely slidably connected to the inner side of the sliding frame (11), and the bottom end of the moving block (12) is fixedly connected to the top end of the connecting frame (10), and a series mechanism for driving the upper connecting plate (7) and the lower connecting plate (8) to connect to the positive and negative electrodes of the lithium battery block (2) is provided in the fixed frame (5); The serial mechanism comprises a mountain-shaped plate (13), a circular hole is formed through the side wall of the moving block (12), and round rods (14) are slidably connected to both ends of the inner side of the circular hole, and a serial spring (15) is fixedly connected between the round rods (14), and straight grooves (16) are formed on both sides of the outer wall of the sliding frame (11), and vertical grooves (17) are formed on both sides of the inner wall of the fixed frame (5), and the side ends of the round rods (14) pass through the straight grooves (16) and are inserted into the vertical grooves (17), and the bottom ends of the side walls of the vertical grooves (17) are formed with horizontal grooves (18), and the horizontal grooves An inclined groove (19) is provided between the end portion (18) and the top end of the vertical groove (17), three sliding grooves are provided on the front side of the fixed frame (5), the mountain-shaped plate (13) is inserted into the inner sides of the three sliding grooves, and the side wall of the mountain-shaped plate (13) is fixedly connected to the side wall of the movable block (12), a groove (20) is provided at the bottom end of the inclined groove (19), a cavity is provided inside the fixed frame (5) relative to the position next to the inclined groove (19), a limit block (21) is slidably connected to the inner side of the cavity, and the side end of the limit block (21) is provided through the inner side of the inclined groove (19).

2. A lithium battery deep discharge safety detection device according to claim 1, characterized in that: A plurality of baffles (4) are fixedly connected to the top of the detection frame (1) at equal intervals, and the six lithium battery blocks (2) are all placed between the baffles (4) on the detection frame (1).

3. The lithium battery deep discharge safety detection device according to claim 1, characterized in that: The depth of the transverse groove (18) is deeper than the depth of the vertical groove (17), and the top of the groove (20) is inclined at the connection with the inner side of the inclined groove (19), and the end of the round rod (14) away from the end is set to a smooth arc surface.

4. The lithium battery deep discharge safety detection device according to claim 1, characterized in that: The bottom end of the limit block (21) is flush with the top end of the transverse groove (18), the bottom end of the cavity is fixedly connected to an upper electric telescopic cylinder (22), the output end of the upper electric telescopic cylinder (22) is fixedly connected to a release plate (23), and the limit block (21) is fixedly connected to the side wall of the release plate (23).

5. The lithium battery deep discharge safety detection device according to claim 1, characterized in that: A plurality of upper springs (24) are fixedly connected between the inner top of the fixed frame (5) and the top of the sliding frame (11), and a plurality of lower springs (25) are fixedly connected between the inner side of the sliding frame (11) and the side wall of the moving block (12).

6. The lithium battery deep discharge safety detection device according to claim 1, characterized in that: The positioning mechanism includes a positioning rod (26), and both ends of the inner side of the detection frame (1) are provided with push grooves (27) adapted to the positioning rod (26). The front side of the detection frame (1) is fixedly connected to a positioning frame (28) at a position next to the push groove (27). The side of the positioning frame (28) away from the positioning frame (28) is threadedly connected with a bolt (29). The positioning rod (26) is inserted into the inner side of the positioning frame (28). The rear side of the detection frame (1) is provided with a conveying line (30) for conveying lithium battery blocks (2). The rear side of the detection frame (1) is provided with a bottom groove, and the inner side of the bottom groove is longitudinally slidably connected to a limiting plate (31). Both sides of the bottom groove are fixedly connected to a lower electric telescopic cylinder (32), and the output end of the lower electric telescopic cylinder (32) is fixedly connected to the top of the limiting plate (31).

7. A lithium battery deep discharge safety detection device according to claim 6, characterized in that: The inner side of the positioning frame (28) is laterally slidably connected to a T-shaped block (36), both sides of the positioning rod (26) are provided with slots (33), and the slots (33) are tilted and arranged close to the side of the detection frame (1), and the T-shaped block (36) is tilted and arranged close to the side of the detection frame (1), and the side end of the bolt (29) is rotatably connected to the side wall of the T-shaped block (36).

8. The lithium battery deep discharge safety detection device according to claim 6, characterized in that: The bottom end of the detection frame (1) is fixedly connected to a plurality of U-shaped hangers (34) for placing positioning rods (26), and the front side of the positioning rods (26) is fixedly connected to a pair of handles (35).

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