A lithium-ion battery thickness detection device

Abstract

This invention relates to a thickness detection device, and more particularly to a thickness detection device for lithium-ion batteries. The purpose of this invention is to provide a thickness detection device for lithium-ion batteries that is easy to handle. This invention provides such a thickness detection device for lithium-ion batteries, comprising a base, a support plate, a protective shell, a moving component, a measuring component, and an ejection component. The support plate for placing the battery is connected to the top of the base, and the protective shell is connected to the outside of the support plate. The moving component is located on the top of the support plate for moving the battery, and the measuring component for measuring the thickness is located on the moving component. The ejection component for picking up the battery is located in the middle of the support plate. This invention allows for the detection of battery thickness by observing the position of a pointer on a data table, thus facilitating the detection of battery thickness.

Description

Technical Field

[0001] The invention relates to a thickness detection device, in particular to a thickness detection device for a lithium ion battery. Background Art

[0002] Lithium-ion batteries refer to batteries containing lithium in the electrochemical system. Due to their advantages such as high energy, high battery voltage, wide operating temperature range, and long storage life, they have been widely used in military and civilian small electrical appliances. Large-capacity lithium-ion batteries have been tried in electric vehicles and will become one of the main power sources for electric vehicles in the 21st century. They have been used in artificial satellites, aerospace, and energy storage. After the lithium-ion battery is processed, it is necessary to re-inspect the thickness, sealing, and processing size of the lithium battery. The existing method of detecting the thickness of lithium batteries is for people to measure them one by one with a handheld micrometer. The detection efficiency and accuracy are low, which is not conducive to the detection of large quantities of lithium batteries.

[0003] Patent application CN215261558U, with an authorization announcement date of 20211221, discloses a lithium battery thickness measuring device, including a pressing mechanism and an adjusting mechanism arranged on a bottom block, the pressing mechanism and the adjusting mechanism are connected by a pressing block, the adjusting mechanism includes a slide groove, the slide groove is provided on the inner wall of the bottom block, a slider is slidably provided on the inner wall of the slide groove, a connecting rod is provided on the outer side of the slider and extends out of the bottom block to connect with the second connecting plate, a pointer is provided at the lower end of the second connecting plate, a sliding groove is provided on the second connecting plate, a sliding block is provided on the outer side of the pressing block, and the outer side of the sliding block is slidably connected to the inner wall of the sliding groove. The first electric telescopic rod drives the first connecting plate to move up and down, so that the pressing block on the second electric telescopic rod moves up and down until it moves to the center of the lithium battery, which is convenient for pushing the lithium battery; the slider slides on the inner wall of the slide groove, and the pressing block drives the limiting sliding rod to slide on the inner wall of the sliding cavity, ensuring that the pointer of the second connecting plate slides on both sides of the bottom block, and the thickness of the lithium battery can be determined in conjunction with the scale. Although the above patent can improve the measurement efficiency of the thickness of lithium batteries, it is inconvenient to take out when people need to take lithium batteries.

[0004] Therefore, in view of the above-mentioned shortcomings, a thickness detection device for a lithium-ion battery that is easy to take is provided. Summary of the invention

[0005] In order to overcome the shortcoming that it is inconvenient to pick up the lithium battery when people use most of the devices for measuring the thickness of the lithium battery, the purpose of the present invention is to provide a lithium ion battery thickness detection device that is easy to pick up.

[0006] The present invention is achieved through the following technical approaches:

[0007] A lithium-ion battery thickness detection device comprises a base, a support plate, a protective shell, a moving component, a measuring component and an ejection component. The top of the base is connected to a support plate for placing the battery, the outer side of the support plate is connected to the protective shell, the top of the support plate is provided with a moving component for moving, the moving component is provided with a measuring component for measuring the thickness, and the middle of the support plate is provided with an ejection component for taking out the battery.

[0008] Further description, the moving assembly includes a guide frame, a sliding frame, a first elastic member and a handle. The guide frame is connected to the top of the support plate. The sliding frame is slidably connected to the left and right sides of the upper rear side of the guide frame. The first elastic member is connected between the lower part of the sliding frame and the guide frame, and the handle is connected between the upper part of the sliding frame.

[0009] Further description, the measuring component includes a support frame, a first fixed rod, a first support frame, a roller, a second elastic member, a rack, a data table, a support rod, a pointer and a gear. The support frame is connected between the inner sides of the sliding frame, the first fixed rod is connected to the left and right sides of the bottom of the support frame, the first support frame is slidably connected between the lower parts of the first fixed rods, the roller is rotatably connected to the lower part of the first support frame, the second elastic member is connected between the first fixed rod and the first support frame, a rack is connected to the middle of the top of the first support frame, the rack is slidably connected to the support frame, the data table is connected to the middle of the front side of the support frame, the support rod is connected to the front side of the top inside the support frame, the pointer is rotatably connected to the data table, the rear of the pointer is connected to a gear, and the gear is meshed with the rack.

[0010] Further explanation, the ejection assembly includes a push plate, a guide rod, a fifth elastic member, a third fixed rod, a third support frame and a pressing rod. The push plate is slidably connected to the middle of the support plate, and guide rods are connected to the left and right sides of the bottom of the push plate. The guide rod is slidably connected to the support plate, and the fifth elastic member is connected between the guide rod and the push plate. The third fixed rod is connected between the inner lower part of the guide rod, and the third support frame is connected to the middle of the bottom inner part of the base. The pressing rod is rotatably connected to the upper part of the third support frame, and the rear side of the pressing rod is slidably connected to the third fixed rod.

[0011] Further description, it also includes a clamping assembly for fixing the pointer, the clamping assembly includes a chuck, a first fixed block, a second fixed rod, a pawl, a first torsion spring, a knob and a push rod, the chuck is connected to the rear side of the pointer, the first fixed block is connected to the middle of the rear side of the support frame, the upper and lower sides of the front side of the first fixed block are connected to the second fixed rod, the front side of the second fixed rod is rotatably connected to the pawl, the first torsion spring is connected between the upper second fixed rod and the upper pawl, the first torsion spring is also connected between the lower second fixed rod and the lower pawl, two sliding grooves are opened in the middle of the rear side of the support frame, the knobs are slidably connected between the sliding grooves, the upper and lower sides of the front side of the knob are connected to push rods, and the push rods will contact the adjacent pawls when rotating.

[0012] Further description, also includes a clamping assembly for clamping the battery, the clamping assembly includes a second support frame, a sliding rod, a third elastic member, a first support block, a groove drum, a transmission wheel, a transmission belt, a second support block, a rotating shaft, a clamping rod and a second torsion spring, the left and right sides of the rear side of the top of the support plate are connected to the second support frame, the rear side of the second support frame is slidably connected to the sliding rod, the sliding frame is in contact with the sliding rod, the third elastic member is connected between the upper and lower sides of the sliding rod on the left and the second support frame on the left, the third elastic member is also connected between the upper and lower sides of the sliding rod on the right and the second support frame on the right, the first support blocks are symmetrically connected to the left and right sides of the top of the support plate, the groove drum is rotatably connected between the first support blocks on the left, and the right side The first support blocks are also rotatably connected with a groove drum, and the sliding rods on the left and right sides are respectively slidably connected with the groove drums on the left and right sides, and three second support blocks are connected at intervals on the left and right sides of the top of the support plate, and the second support blocks are located on the inner side of the first support blocks, and a rotating shaft is rotatably connected between the second support blocks on the left, and a rotating shaft is also rotatably connected between the second support blocks on the right, and a transmission wheel is connected to the rotating shaft and the front side of the groove drum, a transmission belt is wound between the transmission wheels on the left, and a transmission belt is also wound between the transmission wheels on the right, and a clamping rod is rotatably connected to the rotating shaft, and the front and rear sides of the lower side of the clamping rods on the left and right sides are respectively connected to the second torsion springs between the rotating shafts on the left and right sides, and the number of the second torsion springs is at least two.

[0013] Further description, it also includes a limiting assembly for fixing the battery, the limiting assembly includes a second fixed block, a limiting block and a fourth elastic member, three second fixed blocks are connected at intervals on the left and right sides of the top of the support plate, the second fixed blocks are located on the inner side of the second support block, the limiting blocks are slidably connected between the right sides of the second fixed blocks on the left, and the limiting blocks are also slidably connected between the left sides of the second fixed blocks on the right, and the fourth elastic member is connected between the inside of the second fixed block and the adjacent limiting blocks.

[0014] To further illustrate, the first elastic member is a compression spring.

[0015] The present invention provides a lithium ion battery thickness detection device, which has the following advantages:

[0016] 1. The present invention can detect the thickness of the battery by allowing people to observe the position where the pointer points on the data table, thereby making it convenient for people to detect the thickness of the battery.

[0017] 2. The present invention can drive the third fixing rod and the push plate to move upward by pressing the pressing rod to rotate, thereby driving the battery to move upward, separating the battery from the support plate, and making it easier for people to take away the battery.

[0018] 3. The present invention can prevent the chuck from rotating by clamping the chuck with the ratchet, thereby fixing the pointer and making it convenient for people to observe the pointing position of the pointer.

[0019] 4. In the present invention, under the elastic force of the fourth elastic member, the limiting block can fix the battery, thereby preventing the battery from moving during the detection process, thereby making it easier for people to measure the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure from another viewing angle of the present invention.

[0022] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the mobile component of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the measuring component of the present invention.

[0025] Figure 6 This is a schematic diagram of the first partial structure of the measuring component of the present invention.

[0026] Figure 7 This is a schematic diagram of the second partial structure of the measuring component of the present invention.

[0027] Figure 8 This is a schematic diagram of the third partial structure of the measuring component of the present invention.

[0028] Fig. 9 It is a schematic structural diagram of the clamping assembly of the present invention.

[0029] Fig.10 It is a schematic diagram of the first partial structure of the clamping assembly of the present invention.

[0030] Fig.11 This is an enlarged view of part A of the present invention.

[0031] Fig.12 It is a schematic diagram of the second partial structure of the clamping assembly of the present invention.

[0032] Fig.13 It is a schematic structural diagram of the clamping assembly of the present invention.

[0033] Fig.14 This is a schematic diagram of the first partial structure of the clamping assembly of the present invention.

[0034] Fig.15 This is a schematic diagram of the second partial structure of the clamping assembly of the present invention.

[0035] Fig.16 It is a structural schematic diagram of the limiting component of the present invention.

[0036] Fig.17 It is a schematic structural diagram of the ejection assembly of the present invention.

[0037] Markings in the accompanying drawings: 1: base, 2: support plate, 3: protective shell, 4: moving component, 401: guide frame, 402: sliding frame, 403: first elastic member, 404: pull handle, 5: measuring component, 501: support frame, 502: first fixing rod, 503: first support frame, 504: roller, 505: second elastic member, 506: rack, 507: data table, 508: support rod, 509: pointer, 511: gear, 6: clamping component, 601: chuck, 602: first fixing block, 603: second fixing rod, 604: ratchet, 605: first torsion spring, 606: knob, 607: push rod, 608: slide groove, 7: clamping assembly, 701: second support frame, 702: slide rod, 703: third elastic member, 704: first support block, 705: groove drum, 706: transmission wheel, 707: transmission belt, 708: second support block, 709: rotating shaft, 710: clamping rod, 711: second torsion spring, 8: limiting assembly, 801: second fixed block, 802: limiting block, 803: fourth elastic member, 9: ejection assembly, 901: push plate, 902: guide rod, 903: fifth elastic member, 904: third fixed rod, 905: third support frame, 906: pressing rod. DETAILED DESCRIPTION

[0038] The present invention is further described below with reference to the accompanying drawings, and embodiments of the present invention are given with reference to the accompanying drawings.

[0039] Example 1

[0040] A lithium-ion battery thickness detection device includes a base 1, a support plate 2, a protective shell 3, a moving component 4, a measuring component 5 and an ejection component 9, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.17 As shown, a support plate 2 is welded on the top of the base 1, under the action of the support plate 2, the battery can be placed, a protective shell 3 is connected to the outside of the support plate 2, a moving component 4 is provided on the top of the support plate 2, a measuring component 5 is provided on the moving component 4, and an ejection component 9 is provided in the middle of the support plate 2.

[0041] The moving assembly 4 includes a guide frame 401, a sliding frame 402, a first elastic member 403 and a handle 404, see Figure 4 As shown, a guide frame 401 is welded on the top of the support plate 2, and sliding frames 402 are slidably connected to the left and right sides of the upper rear side of the guide frame 401. A first elastic member 403 is connected between the lower parts of the two sliding frames 402 and the guide frame 401, and the first elastic member 403 is a compression spring. A pull handle 404 is connected between the upper parts of the two sliding frames 402, and the sliding frame 402 can be driven to move forward by pulling the pull handle 404 forward.

[0042] The measuring assembly 5 includes a support frame 501, a first fixing rod 502, a first support frame 503, a roller 504, a second elastic member 505, a rack 506, a data table 507, a support rod 508, a pointer 509 and a gear 511, see Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a support frame 501 is connected between the inner sides of the two sliding frames 402, and first fixed rods 502 are connected to the left and right sides of the bottom of the support frame 501. A first support frame 503 is slidably connected between the lower parts of the two first fixed rods 502, and a roller 504 is rotatably connected to the lower part of the first support frame 503. A second elastic member 505 is connected between the two first fixed rods 502 and the first support frame 503, and a rack 506 is connected to the middle of the top of the first support frame 503. 06 is slidably connected to the support frame 501, a data table 507 is connected to the middle of the front side of the support frame 501, a support rod 508 is welded to the front side of the top inside the support frame 501, a pointer 509 is rotatably connected to the lower part of the support rod 508, and the thickness of the battery can be detected by observing the position pointed by the pointer 509 on the data table 507. The pointer 509 is rotatably connected to the data table 507, and a gear 511 is connected to the rear of the pointer 509, and the gear 511 is meshed with the rack 506.

[0043] The ejection assembly 9 includes a push plate 901, a guide rod 902, a fifth elastic member 903, a third fixing rod 904, a third support frame 905 and a pressing rod 906. Fig.17 As shown, a push plate 901 is slidably connected in the middle of the support plate 2. By moving the push plate 901 upward, the battery can be driven to move upward, thereby making it convenient for people to take out the battery. Guide rods 902 are connected to the left and right sides of the bottom of the push plate 901. The two guide rods 902 are slidably connected to the support plate 2. A fifth elastic member 903 is connected between the two guide rods 902 and the push plate 901. A third fixed rod 904 is connected between the inner lower parts of the two guide rods 902. A third support frame 905 is welded in the middle of the bottom of the base 1. A pressing rod 906 is rotatably connected to the upper part of the third support frame 905, and the rear side of the pressing rod 906 is slidably connected to the third fixed rod 904.

[0044] When people need to use the thickness detection device of the lithium-ion battery, they first place the battery on the support plate 2 so that the battery contacts the push plate 901, and then pull the handle 404 to move forward, thereby driving the sliding frame 402, the support frame 501, the first support frame 503 and the roller 504 to move forward, and the first elastic member 403 is compressed. When the roller 504 contacts the battery, the roller 504 rotates, during which the battery squeezes the roller 504 to move upward, thereby driving the first support frame 503 and the rack 506 to move upward, the second elastic member 505 is compressed, and the rack 506 drives the gear 511 to rotate, thereby driving the pointer 509 to rotate, and then people can detect the thickness of the battery by the position pointed to by the pointer 509 on the data table 507. When people have completed the thickness detection of the battery, they release the handle 404, and the first elastic member 403 returns to its original state. The first elastic member 403 drives the sliding frame 402, the handle 404, the support frame 501, the first support frame 503 and the roller 504 to move forward, and the first elastic member 403 is compressed. When the roller 504 contacts the battery, the roller 504 rotates, and the battery squeezes the roller 504 to move upward, thereby driving the first support frame 503 and the rack 506 to move upward, and the second elastic member 505 is compressed. The rack 506 drives the gear 511 to rotate, thereby driving the pointer 509 to rotate. The support frame 503 and the roller 504 move backward to reset, and the roller 504 will reverse. When the roller 504 is separated from the battery, the roller 504 stops reversing, and the second elastic member 505 returns to its original state. The second elastic member 505 drives the first support frame 503, the roller 504 and the rack 506 to move downward to reset, and the rack 506 drives the gear 511 to reverse and reset, thereby driving the pointer 509 to reverse and reset, and then press the pressing rod 906 to rotate, so that the pressing rod 906 squeezes the third fixed The rod 904 moves upward, thereby driving the guide rod 902 and the push plate 901 to move upward, and the fifth elastic member 903 is compressed, thereby driving the battery to move upward, so that the battery is separated from the support plate 2. Then people can take out the battery, and then release the pressing rod 906, the fifth elastic member 903 returns to its original state, and the fifth elastic member 903 drives the guide rod 902, the third fixed rod 904 and the push plate 901 to move downward and reset, so that the third fixed rod 904 squeezes the pressing rod 906 and reverses and resets.

[0045] Example 2

[0046] On the basis of embodiment 1, a clamping assembly 6 is also included, and the clamping assembly 6 includes a chuck 601, a first fixing block 602, a second fixing rod 603, a pawl 604, a first torsion spring 605, a knob 606 and a push rod 607, see Figure 2 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, a chuck 601 is connected to the rear side of the pointer 509, a first fixed block 602 is welded in the middle of the rear side of the support frame 501, and second fixed rods 603 are connected to the upper and lower sides of the front side of the first fixed block 602. The front sides of the two second fixed rods 603 are rotatably connected with pawls 604. The chuck 601 is clamped by the pawls 604, so that the pointer 509 can be fixed, so that people can observe the pointing position of the pointer 509 conveniently. A first torsion spring 605 is connected between the upper second fixed rod 603 and the upper pawl 604, and a first torsion spring 605 is also connected between the lower second fixed rod 603 and the lower pawl 604. Two sliding grooves 608 are opened in the middle of the rear side of the support frame 501, and a knob 606 is slidably connected between the two sliding grooves 608. Push rods 607 are connected to the upper and lower sides of the front side of the knob 606, and the push rods 607 will contact the adjacent pawls 604 when rotating.

[0047] When the pointer 509 rotates, the pointer 509 drives the chuck 601 to rotate, thereby squeezing the pawl 604 to rotate, and the first torsion spring 605 is deformed. When the pointer 509 stops rotating, the chuck 601 stops rotating, and the first torsion spring 605 returns to its original state. The first torsion spring 605 drives the pawl 604 to reverse and reset, so that the pawl 604 clamps the chuck 601, thereby preventing the chuck 601 from reversing, thereby fixing the pointer 509, and making it convenient for people to observe the pointing position of the pointer 509. When people need the pointer 509 to reverse and reset, The knob 606 is turned to rotate, thereby driving the push rod 607 to rotate. When the push rod 607 contacts the pawl 604, the push rod 607 squeezes the pawl 604 to rotate, and the first torsion spring 605 is deformed, so that the pawl 604 releases the chuck 601, and then the chuck 601 can be reversed and reset, and the knob 606 is turned again to reverse and reset. When the knob 606 is separated from the pawl 604, the first torsion spring 605 returns to its original state, and the first torsion spring 605 drives the pawl 604 to reverse and reset, so that the pawl 604 contacts the chuck 601, and then the knob 606 is released.

[0048] The clamping assembly 7 includes a second support frame 701, a slide bar 702, a third elastic member 703, a first support block 704, a groove drum 705, a transmission wheel 706, a transmission belt 707, a second support block 708, a rotating shaft 709, a clamping rod 710 and a second torsion spring 711, see Figure 1 , Fig.13 , Fig.14 and Fig.15As shown, second support frames 701 are welded to the left and right sides of the rear side of the top of the support plate 2, and the rear sides of the two second support frames 701 are slidably connected with sliding rods 702, and the sliding frame 402 is in contact with the sliding rod 702. The third elastic member 703 is connected between the upper and lower sides of the sliding rod 702 on the left and the second support frame 701 on the left, and the third elastic member 703 is also connected between the upper and lower sides of the sliding rod 702 on the right and the second support frame 701 on the right. The left and right sides of the top of the support plate 2 are symmetrically connected with first support blocks 704 front and back, and a groove drum 705 is rotatably connected between the two first support blocks 704 on the left, and a groove drum 705 is also rotatably connected between the two first support blocks 704 on the right. The sliding rods 702 on the left and right sides are respectively slidably connected to the groove drums 705 on the left and right sides, and the left and right sides of the top of the support plate 2 are spaced apart. There are three second support blocks 708, and the second support blocks 708 are located on the inner side of the first support block 704. A rotating shaft 709 is rotatably connected between the three second support blocks 708 on the left, and a rotating shaft 709 is also rotatably connected between the three second support blocks 708 on the right. Transmission wheels 706 are connected to the two rotating shafts 709 and the front sides of the two groove drums 705. A transmission belt 707 is wound between the two transmission wheels 706 on the left, and a transmission belt 707 is also wound between the two transmission wheels 706 on the right. Clamping rods 710 are rotatably connected to the two rotating shafts 709, and the battery is clamped by the clamping rods 710 to prevent the battery from moving. Second torsion springs 711 are connected to the rotating shafts 709 on the left and right sides at the front and rear sides of the lower side of the clamping rods 710 on the left and right sides respectively, and the number of the second torsion springs 711 is four.

[0049] When the sliding frame 402 moves forward, the sliding frame 402 drives the sliding rod 702 to move forward, and the third elastic member 703 is compressed, thereby driving the groove drum 705 to rotate. The groove drum 705 drives the rotating shaft 709 to rotate through the transmission belt 707, and then drives the clamping rod 710 to rotate. When the clamping rod 710 contacts the battery, the clamping rod 710 stops rotating. When the rotating shaft 709 continues to rotate, the second torsion spring 711 is deformed. Under the elastic force of the second torsion spring 711, the clamping rod 710 clamps the battery, thereby preventing the battery from being Movement occurs, when the sliding frame 402 moves backward and resets, the sliding frame 402 is separated from the sliding rod 702, and the third elastic member 703 returns to its original state. The third elastic member 703 drives the sliding rod 702 to move backward and reset, thereby driving the groove drum 705 to reverse and reset. The groove drum 705 drives the rotating shaft 709 to reverse and reset through the transmission belt 707. During this period, the second torsion spring 711 will slowly reset. When the second torsion spring 711 returns to its original state, the rotating shaft 709 drives the clamping rod 710 to reverse and reset through the second torsion spring 711, so that the clamping rod 710 is separated from the battery.

[0050] The device further includes a limiting assembly 8, which includes a second fixing block 801, a limiting block 802 and a fourth elastic member 803. Figure 1 and Fig.16 As shown, three second fixed blocks 801 are welded at intervals on the left and right sides of the top of the support plate 2, and the second fixed blocks 801 are located on the inner side of the second support block 708. The three second fixed blocks 801 on the left are slidably connected to the limiting blocks 802 on the right sides. The battery is fixed by the limiting blocks 802 to prevent the battery from moving during the detection process. The three second fixed blocks 801 on the right are also slidably connected to the limiting blocks 802 on the left sides, and the fourth elastic member 803 is connected between the inside of the three second fixed blocks 801 and the adjacent limiting blocks 802.

[0051] When people place the battery on the support plate 2, the battery contacts the limit block 802, and the battery squeezes the limit block 802 to move outward, and the fourth elastic member 803 is compressed. Under the elastic force of the fourth elastic member 803, the limit block 802 fixes the battery, thereby preventing the battery from moving during the detection process. When the battery moves upward, the battery separates from the limit block 802, the fourth elastic member 803 returns to its original state, and the fourth elastic member 803 drives the limit block 802 to move inward and reset.

[0052] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A lithium-ion battery thickness detection device, comprising a base (1), a support plate (2) and a protective shell (3), wherein the top of the base (1) is connected to a support plate (2) for placing the battery, and the outer side of the support plate (2) is connected to the protective shell (3), wherein: It also includes a moving component (4), a measuring component (5) and an ejecting component (9), wherein the top of the support plate (2) is provided with a moving component (4) for moving, the moving component (4) is provided with a measuring component (5) for measuring thickness, and the middle of the support plate (2) is provided with an ejecting component (9) for taking out the battery; The moving assembly (4) comprises a guide frame (401), a sliding frame (402), a first elastic member (403) and a handle (404); the top of the support plate (2) is connected to the guide frame (401); the left and right sides of the upper rear side of the guide frame (401) are slidably connected to the sliding frame (402); the lower part of the sliding frame (402) and the guide frame (401) are connected to the first elastic member (403); the upper part of the sliding frame (402) is connected to the handle (404); The measuring assembly (5) comprises a support frame (501), a first fixed rod (502), a first support frame (503), a roller (504), a second elastic member (505), a rack (506), a data table (507), a support rod (508), a pointer (509) and a gear (511); the support frame (501) is connected to the inner side of the sliding frame (402); the first fixed rod (502) is connected to the left and right sides of the bottom of the support frame (501); the first support frame (503) is slidably connected to the lower part of the first fixed rod (502); the roller (504) is rotatably connected to the lower part of the first support frame (503); the first fixed rod (502) is connected to the lower part of the first support frame (503); A second elastic member (505) is connected between the fixed rod (502) and the first support frame (503); a rack (506) is connected to the middle of the top of the first support frame (503); the rack (506) is slidably connected to the support frame (501); a data meter (507) is connected to the middle of the front side of the support frame (501); a support rod (508) is connected to the front side of the top of the support frame (501); a pointer (509) is rotatably connected to the lower part of the support rod (508); the pointer (509) is rotatably connected to the data meter (507); a gear (511) is connected to the rear of the pointer (509); the gear (511) is meshed with the rack (506); The ejection assembly (9) comprises a push plate (901), a guide rod (902), a fifth elastic member (903), a third fixed rod (904), a third support frame (905) and a pressing rod (906); the push plate (901) is slidably connected in the middle of the support plate (2); the left and right sides of the bottom of the push plate (901) are connected to the guide rods (902); the guide rods (902) and the support plate (2) are slidably connected; the fifth elastic member (903) is connected between the guide rods (902) and the push plate (901); the third fixed rod (904) is connected between the inner lower part of the guide rod (902); the third support frame (905) is connected in the middle of the inner bottom of the base (1); the upper part of the third support frame (905) is rotatably connected to the pressing rod (906); the rear side of the pressing rod (906) is slidably connected to the third fixed rod (904); The invention also comprises a clamping assembly (6) for fixing the pointer (509), the clamping assembly (6) comprising a chuck (601), a first fixing block (602), a second fixing rod (603), a ratchet (604), a first torsion spring (605), a knob (606) and a push rod (607), the rear side of the pointer (509) is connected with the chuck (601), the middle of the rear side inside the support frame (501) is connected with the first fixing block (602), the upper and lower sides of the front side of the first fixing block (602) are connected with the second fixing rod (603), and the front side of the second fixing rod (603) is connected with the second fixing rod (603). A pawl (604) is movably connected thereto, a first torsion spring (605) is connected between the second fixing rod (603) on the upper side and the pawl (604) on the upper side, and a first torsion spring (605) is also connected between the second fixing rod (603) on the lower side and the pawl (604) on the lower side, two slide grooves (608) are opened in the middle of the rear side of the support frame (501), a knob (606) is slidably connected between the slide grooves (608), and push rods (607) are connected to the upper and lower sides of the front side of the knob (606), and when the push rod (607) rotates, it will contact the adjacent pawl (604); The first elastic member (403) is a compression spring.

2. A lithium ion battery thickness detection device according to claim 1, characterized in that: The invention also includes a pressing assembly (7) for pressing the battery, wherein the pressing assembly (7) includes a second support frame (701), a sliding rod (702), a third elastic member (703), a first support block (704), a groove drum (705), a transmission wheel (706), a transmission belt (707), a second support block (708), a rotating shaft (709), a clamping rod (710) and a second torsion spring (711). The left and right sides of the rear side of the top of the support plate (2) are connected to the second support frame (701), and the rear side of the second support frame (701) is sliding. The sliding frame (402) is connected with a sliding rod (702), the sliding frame (402) is in contact with the sliding rod (702), the upper and lower sides of the sliding rod (702) on the left side and the second supporting frame (701) on the left side are connected with a third elastic member (703), the upper and lower sides of the sliding rod (702) on the right side and the second supporting frame (701) on the right side are also connected with a third elastic member (703), the left and right sides of the top of the support plate (2) are symmetrically connected with the first supporting blocks (704) front and back, and the first supporting blocks (704) on the left side are rotatably connected with a groove drum (705) ), the first support blocks (704) on the right are also rotatably connected with a groove drum (705), the sliding rods (702) on the left and right sides are respectively slidably connected with the groove drums (705) on the left and right sides, three second support blocks (708) are spaced apart and connected to the left and right sides of the top of the support plate (2), the second support blocks (708) are located on the inner side of the first support blocks (704), the second support blocks (708) on the left are rotatably connected with a rotating shaft (709), and the second support blocks (708) on the right are also rotatably connected with a rotating shaft (709) ), the rotating shaft (709) and the front side of the groove drum (705) are connected with a transmission wheel (706), a transmission belt (707) is wound between the transmission wheels (706) on the left side, and a transmission belt (707) is also wound between the transmission wheels (706) on the right side, and a clamping rod (710) is rotatably connected to the rotating shaft (709), and the front and rear sides of the lower sides of the clamping rods (710) on the left and right sides are respectively connected to the rotating shafts (709) on the left and right sides, and the number of the second torsion springs (711) is at least two.

3. A lithium ion battery thickness detection device according to claim 2, characterized in that: The invention also comprises a limiting assembly (8) for fixing the battery, wherein the limiting assembly (8) comprises a second fixing block (801), a limiting block (802) and a fourth elastic member (803); three second fixing blocks (801) are connected at intervals on both the left and right sides of the top of the support plate (2); the second fixing blocks (801) are located on the inner side of the second support block (708); the limiting blocks (802) are slidably connected between the right sides of the second fixing blocks (801) on the left side; the limiting blocks (802) are also slidably connected between the left sides of the second fixing blocks (801) on the right side; and the fourth elastic member (803) is connected between the inside of the second fixing blocks (801) and the adjacent limiting blocks (802).

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