Lithium battery assembly detection device

Abstract

The invention discloses a lithium battery assembly detection device, and relates to the technical field of lithium battery production and manufacturing, the lithium battery assembly detection device comprises a detection mechanism, a marking mechanism comprises two first electric cylinders, two L-shaped frames and a bottom plate, a second electric cylinder is mounted on the surface of each moving block, a sponge head is mounted in a through hole of each single-hole block, and a positioning mechanism is mounted on the bottom plate. A third electric cylinder is installed on the lower side of each L-shaped frame, and a sealing gasket is connected to the bottom of each I-shaped rod in an adhesive mode. According to the lithium battery detection device, by arranging the marking mechanism, unqualified lithium batteries after detection can be marked, so that after workers sort the unqualified lithium batteries to qualified lithium battery areas carelessly, the unqualified lithium batteries can be quickly sorted out from the qualified lithium battery areas, the workload of the workers is reduced, the detection efficiency is improved, and the labor intensity of the workers is reduced. The use effect of the lithium battery assembly detection device is improved, and the use efficiency of the lithium battery assembly detection device is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production and manufacturing, and in particular to a lithium battery assembly detection device. Background Art

[0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. It mainly relies on the movement of lithium ions between the positive and negative electrodes to realize the charging and discharging process. It is mainly used in the fields of electronics, electric vehicles and energy storage. After the lithium battery is assembled, in order to ensure its safety in later use, the staff generally use detection equipment to conduct quality inspection on the assembled lithium battery.

[0003] In the existing technology, the existing lithium battery assembly detection device can perform sealing detection on the assembled lithium batteries during actual use, and sort out unqualified lithium batteries to ensure the quality of lithium batteries entering the market. However, it does not have a marking function. When the assembled lithium batteries have completed the sealing detection operation, the detection device without a marking function will not be able to mark the lithium battery shell. At this time, if the staff accidentally sorts the unqualified lithium batteries into the qualified lithium battery area, the staff will not be able to quickly sort them out later, and will have to conduct another test, which increases the workload of the staff and reduces the detection efficiency, which not only reduces the use effect of the lithium battery assembly detection device, but also reduces the use efficiency of the lithium battery assembly detection device.

[0004] Therefore, we propose a lithium battery assembly detection device to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery assembly detection device to solve the problem that the existing lithium battery assembly detection device does not have a marking function. When the assembled lithium battery completes the sealing detection operation, the detection device without a marking function will not be able to mark the lithium battery shell. At this time, if the staff accidentally sorts the unqualified lithium batteries into the qualified lithium battery area, the staff will not be able to quickly sort them out later, and then the staff will have to perform another test, which increases the workload of the staff and reduces the detection efficiency, which not only reduces the use effect of the lithium battery assembly detection device, but also reduces the use efficiency of the lithium battery assembly detection device.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a lithium battery assembly detection device, comprising a detection mechanism, wherein the detection mechanism is provided with a marking mechanism;

[0007] The marking mechanism includes two first electric cylinders, two L-shaped frames and a bottom plate, the telescopic ends of the two first electric cylinders are equipped with connecting blocks, the lower sides of the two connecting blocks are fixed with U-shaped frames, the bottom of each U-shaped frame is fixed with two symmetrical moving blocks, the surface of each moving block is equipped with a second electric cylinder, the surface of each moving block is provided with a placement hole, the telescopic end of each second electric cylinder is equipped with a single-hole block, the through hole of each single-hole block is equipped with a sponge head, the surface of each L-shaped frame is fixed with a single-hole plate, the interior of each single-hole plate is fixedly sleeved with a tube body, the output end of each tube body is equipped with a shunt pipe, the interior of each tube body is movably sleeved with an I-shaped rod, and the lower side of each L-shaped frame is A third electric cylinder is installed, and a sealing gasket is bonded to the bottom of each I-shaped rod; by setting a marking mechanism, unqualified lithium batteries can be marked after detection, so that when the staff accidentally sorts the unqualified lithium batteries into the qualified lithium battery area, they can be quickly sorted out, thereby reducing the workload of the staff and improving the detection efficiency, which not only improves the use effect of the lithium battery assembly detection device, but also improves the use efficiency of the lithium battery assembly detection device. When one or more indicator lights are displayed in red, it means that the lithium battery corresponding to the red indicator light has a problem with the sealing and is of unqualified quality. When the lithium battery completes the sealing test, the cooperation of the second electric valve can be used to achieve the return of the internal atmospheric pressure of each space to normal.

[0008] Preferably, the opposite sides of the two U-shaped frames are in contact with each other, the four moving blocks are divided into two groups, the opposite sides of each group of moving blocks are in contact with each other, the telescopic end of each of the second electric cylinders is movably sleeved inside each placement hole, and each of the single-hole blocks is located inside each placement hole.

[0009] Preferably, the four sponge heads are divided into two groups, the two output ends of each shunt tube are respectively located above the two sponge heads in each group, the fixed end of each third electric cylinder movably passes through the lower side of the L-shaped frame, each sealing gasket is movably sleeved inside each tube body, and the bottom end surface of each moving block contacts the top end surface of the bottom plate; by utilizing the cooperation of the controller, the third electric cylinder, the L-shaped frame, the single-hole plate, the I-shaped rod and the sealing gasket, the marking liquid inside the tube body can be squeezed into the inside of the shunt tube, and then by utilizing the cooperation of the shunt tube, the marking liquid can be guided to the sponge head, and then by utilizing the cooperation of the controller, the first electric cylinder, the connecting block, the U-shaped frame and the moving block, the second electric cylinder, the single-hole block and the sponge head can be moved at the same time, and then by utilizing the cooperation of the second electric cylinder, the single-hole block and the controller, the sponge head can be moved, and then by utilizing the cooperation of the sponge head and the marking liquid, the unqualified lithium battery casings can be marked.

[0010] Preferably, the detection mechanism includes a processing box, the two first electric cylinders are symmetrically installed on the top of the processing box, the bottoms of the two connecting blocks and the bottoms of the two U-shaped frames are in contact with the top of the processing box, and the surface of each group of moving blocks is in contact with the surface of the processing box.

[0011] Preferably, the bottoms of the two L-shaped frames are fixed to the top of the processing box, the input ends of the two shunt pipes are movable through the top of the inner wall of the processing box, and the bottom plate is fixed inside the processing box; by setting up a detection mechanism, the sealing performance of the assembled lithium battery can be tested. When the assembled lithium battery needs to be tested for sealing performance, the controller, vacuum pump, second electric valve, gas collecting pipe, four opened first electric valves and four circular tubes are first used to extract the air inside each space composed of the box door, transparent plate, sealing ring and detection groove, and then the controller, pressure sensor and indicator light are used to detect whether the sealing performance of each space is qualified.

[0012] Preferably, two box doors are installed on the front surface and the rear surface of the processing box, two detection grooves are opened on the front surface and the rear surface of the processing box, each of the box doors is located at the notch position of each detection groove, and two sealing rings are provided on the front surface and the rear surface of the processing box.

[0013] Preferably, a transparent plate is fixed inside each of the box doors, and a side of each sealing ring away from the processing box is adhesively connected to a side of each box door close to the processing box. A controller, four pressure sensors and four indicator lights are installed on the top of the processing box.

[0014] Preferably, the detection ends of the four pressure sensors extend to the interior of each detection slot respectively, a placement rack is fixed to the top of the processing box, a display screen is bonded and connected to the interior of the placement rack, a round tube is fixed and penetrated through the top of the inner wall of each detection slot, and a first electric valve is installed at the output end of each round tube.

[0015] Preferably, a gas collecting pipe is installed between the output ends of the four first electric valves, a second electric valve is installed at one of the input ends of the gas collecting pipe, a vacuum pump is installed on the top of the processing box, and the input end of the vacuum pump is installed with the output end of the gas collecting pipe.

[0016] Preferably, the four pressure sensors, four indicator lights, the display screen, the four first electric valves, the second electric valve and the vacuum pump are all electrically connected to the controller, and the two first electric cylinders, the four second electric cylinders and the two third electric cylinders are all electrically connected to the controller; by using the cooperation of the display screen, each data received by the controller can be displayed on its screen, and when the above-mentioned spaces are all qualified, the internal atmospheric pressure of all the above-mentioned spaces can be restored to normal by using the cooperation of the controller, the second electric valve, the gas collecting pipe, the first electric valve and the circular tube, and then the sealing detection operation of the assembled lithium battery can be realized by using the cooperation of the above-mentioned components.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention, by setting a marking mechanism, can mark unqualified lithium batteries after detection, so that when the staff accidentally sorts the unqualified lithium batteries into the qualified lithium battery area, they can be quickly sorted out, thereby reducing the workload of the staff and improving the detection efficiency, which not only improves the use effect of the lithium battery assembly detection device, but also improves the use efficiency of the lithium battery assembly detection device. When one or more indicator lights are displayed in red, it means that the lithium battery corresponding to the red indicator light has a problem with the sealing and is of unqualified quality. When the lithium battery completes the sealing test, the cooperation of the second electric valve can be used to achieve the return of the atmospheric pressure in each space to normal.

[0019] 2. The present invention utilizes the cooperation of the controller, the third electric cylinder, the L-shaped frame, the single-hole plate, the I-shaped rod and the sealing gasket to squeeze the marking liquid inside the tube body into the inside of the shunt tube, and then utilizes the cooperation of the shunt tube to guide the marking liquid to the sponge head, and then utilizes the cooperation of the controller, the first electric cylinder, the connecting block, the U-shaped frame and the moving block to move the second electric cylinder, the single-hole block and the sponge head at the same time, and then utilizes the cooperation of the second electric cylinder, the single-hole block and the controller to move the sponge head, and then utilizes the cooperation of the sponge head and the marking liquid to mark the unqualified lithium battery casings.

[0020] 3. The present invention can perform a sealing test on the assembled lithium battery by setting up a detection mechanism. When the assembled lithium battery needs to be tested for sealing, the controller, vacuum pump, second electric valve, gas collecting pipe, four opened first electric valves and four round tubes are first used to extract the air inside each space composed of the box door, transparent plate, sealing ring and detection groove. Then, the controller, pressure sensor and indicator light are used to detect whether the sealing inside each space is qualified.

[0021] 4. The present invention, by using the cooperation of the display screen, can realize that each data received by the controller can be displayed on its screen. When the above-mentioned spaces are all qualified, the cooperation of the controller, the second electric valve, the gas collecting pipe, the first electric valve and the round tube can realize that the internal atmospheric pressure of all the above-mentioned spaces returns to normal. Subsequently, by using the cooperation of the above-mentioned components, the sealing test operation of the assembled lithium battery can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a lithium battery assembly detection device of the present invention;

[0023] Figure 2 It is a partial structural schematic diagram of a marking mechanism of a lithium battery assembly detection device of the present invention;

[0024] Figure 3 It is a partial three-dimensional diagram of a lithium battery assembly detection device of the present invention from a bottom-up perspective;

[0025] Figure 4 A bottom-up perspective view of a lithium battery assembly detection device according to the present invention;

[0026] Figure 5 It is a partially cutaway stereoscopic view of a marking mechanism of a lithium battery assembly detection device of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a lithium battery assembly detection device according to the present invention from a top view;

[0028] Figure 7 It is a partial three-dimensional view from another angle of a lithium battery assembly detection device of the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of a moving block, a second electric cylinder, a placement hole, a single-hole block and a sponge head of a lithium battery assembly detection device of the present invention;

[0030] Fig. 9 A three-dimensional diagram of a placement frame of a lithium battery assembly detection device of the present invention;

[0031] Fig.10 It is a three-dimensional structural schematic diagram of a box door, a sealing ring and a transparent plate of a lithium battery assembly detection device of the present invention;

[0032] Fig.11 A three-dimensional diagram of a single hole block of a lithium battery assembly detection device of the present invention;

[0033] Fig.12 The present invention is a schematic diagram of the three-dimensional structure of a moving block, a placement hole and a bottom plate of a lithium battery assembly detection device.

[0034] In the figure: 1. detection mechanism; 101. processing box; 102. box door; 103. sealing ring; 104. transparent plate; 105. controller; 106. pressure sensor; 107. indicator light; 108. placement rack; 109. display screen; 110. round tube; 111. first electric valve; 112. gas collecting pipe; 113. second electric valve; 114. vacuum pump; 115. detection tank; 2. marking mechanism; 201. first electric cylinder; 202. connecting block; 203. U-shaped frame; 204. moving block; 205. second electric cylinder; 206. placement hole; 207. single hole block; 208. sponge head; 209. L-shaped frame; 210. single hole plate; 211. tube body; 212. shunt pipe; 213. I-shaped rod; 214. third electric cylinder; 215. sealing pad; 216. bottom plate. DETAILED DESCRIPTION

[0035] 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 implementation regulations described 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.

[0036] Example 1: Please refer to Figure 1-Figure 8 and Figure 10-12 As shown, the present invention provides a technical solution: a lithium battery assembly detection device, comprising a detection mechanism 1, on which a marking mechanism 2 is provided;

[0037] The marking mechanism 2 includes two first electric cylinders 201, two L-shaped frames 209 and a bottom plate 216. The telescopic ends of the two first electric cylinders 201 are both equipped with connecting blocks 202. The lower sides of the two connecting blocks 202 are both fixed with U-shaped frames 203. The bottom of each U-shaped frame 203 is fixed with two symmetrical moving blocks 204. The surface of each moving block 204 is equipped with a second electric cylinder 205. The surface of each moving block 204 is provided with a placement hole 206. The telescopic end of each second electric cylinder 205 is equipped with a single-hole block 207. The through hole of each single-hole block 207 is equipped with a sponge head 208. The surface of each L-shaped frame 209 is fixed with a single-hole plate 210. The inside of the plate 210 is fixedly sleeved with a tube body 211, the output end of each tube body 211 is installed with a shunt pipe 212, the inside of each tube body 211 is movably sleeved with an I-shaped rod 213, the lower side of each L-shaped frame 209 is installed with a third electric cylinder 214, the bottom of each I-shaped rod 213 is bonded and connected with a sealing gasket 215, the opposite sides of the two U-shaped frames 203 are in contact, the four moving blocks 204 are divided into two groups, the opposite sides of each group of moving blocks 204 are in contact, the telescopic end of each second electric cylinder 205 is movably sleeved in each placement hole 206, each single-hole block 207 is respectively located in each placement hole 206, the four sponge heads 208 are divided into two groups, each of which is divided into two groups. The two output ends of the flow tube 212 are respectively located above each group of two sponge heads 208, the fixed end of each third electric cylinder 214 is movably inserted into the lower side of the L-shaped frame 209, each sealing gasket 215 is movably sleeved inside each tube body 211, the bottom end surface of each moving block 204 is in contact with the top end surface of the bottom plate 216, the detection mechanism 1 includes a processing box 101, two first electric cylinders 201 are symmetrically installed on the top of the processing box 101, the bottoms of the two connecting blocks 202 and the bottoms of the two U-shaped frames 203 are in contact with the top of the processing box 101, the surface of each group of moving blocks 204 is in contact with the surface of the processing box 101, and the bottoms of the two L-shaped frames 209 are in contact with the processing box 10 1 is fixed to the top, the input ends of the two shunt pipes 212 are movably penetrated through the top of the inner wall of the processing box 101, the bottom plate 216 is fixed inside the processing box 101, the two first electric cylinders 201, the four second electric cylinders 205 and the two third electric cylinders 214 are electrically connected to the controller 105, the front surface of the processing box 101 and the rear surface of the processing box 101 are both provided with two sealing rings 103, the top of the processing box 101 is installed with the controller 105, four pressure sensors 106 and four indicator lights 107, one of the input ends of the gas collecting pipe 112 is installed with the second electric valve 113, and the front surface of the processing box 101 and the rear surface of the processing box 101 are both provided with two detection grooves 115.

[0038] In this embodiment, when one or more indicator lights 107 are displayed in red, it means that the lithium battery corresponding to the red indicator light 107 has a sealing problem and is of unqualified quality. When the lithium battery completes the sealing test, the staff first opens the second electric valve 113 to allow the internal atmospheric pressure of each space (composed of the box door 102, the transparent plate 104, the sealing ring 103 and the detection groove 115) to return to normal, and then removes all the box doors 102, and then takes out the qualified lithium battery from the corresponding detection groove 115, and then uses the controller 105 to start the two third electric cylinders 214. At this time, each of the started third electric cylinders 214 will be connected to it. The L-shaped frame 209 and the single-hole plate 210 cooperate to drive the I-shaped rod 213 connected thereto to move vertically downward, and then the two I-shaped rods 213 moving vertically downward will squeeze the marking liquid inside the corresponding tube body 211 into the inside of the corresponding shunt pipe 212 with the cooperation of the sealing gasket 215 connected thereto, and then be respectively guided to the corresponding sponge head 208. When a proper amount of marking liquid is dripped onto each sponge head 208, the controller 105 is used to simultaneously pause the two third electric cylinders 214, and then the first electric cylinder 201 is started again (the lithium battery inside the corresponding detection tank 115 is unqualified). At this time, the started first electric cylinder 201 will use The connecting block 202 connected thereto drives the corresponding U-shaped frame 203 to move, and then the moving U-shaped frame 203 will use the two moving blocks 204 connected thereto to drive the corresponding two second electric cylinders 205, two single-hole blocks 207 and two sponge heads 208 to move. When the two sponge heads 208 are moved to the point where they cannot move, the controller 105 will pause the first electric cylinder 201 and then start the second electric cylinder 205 (the lithium battery inside the corresponding detection slot 115 is unqualified). Then the started second electric cylinder 205 will drive the corresponding sponge head 208 to move with the cooperation of the single-hole block 207 connected thereto. When the sponge head 208 contacts the lithium battery When the shell of the lithium battery is reset and returned to its original position, marking liquid will appear on the shell of the lithium battery in contact with the sponge head 208, that is, the marking operation of the unqualified lithium battery is realized, and then the controller 105 will use the corresponding first electric cylinder 201 and the previous linkage components to reset the corresponding two second electric cylinders 205 to their original positions, and then the marked and unqualified lithium batteries will be taken out from the inside of the detection tank 115, and then the next round of assembled lithium battery sealing test will be carried out, that is, to avoid the staff accidentally sorting the unqualified lithium batteries into the qualified lithium battery area, which is inconvenient for the later staff to quickly sort them out, thereby increasing the workload of the staff.

[0039] Embodiment 2: According to Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, the detection mechanism 1 includes a processing box 101, two box doors 102 are installed on the front surface of the processing box 101 and the rear surface of the processing box 101, two detection grooves 115 are opened on the front surface of the processing box 101 and the rear surface of the processing box 101, and each box door 102 is respectively located at the notch position of each detection groove 115. Two sealing rings 103 are arranged on the front surface of the processing box 101 and the rear surface of the processing box 101. A transparent plate 104 is fixed inside each box door 102. A side of each sealing ring 103 away from the processing box 101 is respectively bonded to a side of each box door 102 close to the processing box 101. A controller 105, four pressure sensors 106 and four indicator lights 107 are installed on the top of the processing box 101. The detection ends of the four pressure sensors 106 extend respectively. Extending to the interior of each detection slot 115, a placement rack 108 is fixed on the top of the processing box 101, and a display screen 109 is bonded and connected to the inside of the placement rack 108. A round tube 110 is fixed and penetrates the top of the inner wall of each detection slot 115, and a first electric valve 111 is installed at the output end of each round tube 110. A gas collecting pipe 112 is installed between the output ends of the four first electric valves 111, and a second electric valve 113 is installed at one of the input ends of the gas collecting pipe 112. A vacuum pump 114 is installed on the top of the processing box 101, and the input end of the vacuum pump 114 is installed with the output end of the gas collecting pipe 112. Four pressure sensors 106, four indicator lights 107, a display screen 109, four first electric valves 111, the second electric valve 113 and the vacuum pump 114 are all electrically connected to the controller 105.

[0040] In this embodiment, when it is necessary to perform a sealing test on the assembled lithium battery, the controller 105 is used to start the vacuum pump 114, the four pressure sensors 106 and open the four first electric valves 111. At this time, the started vacuum pump 114 will, with the cooperation of the closed second electric valve 113, the gas collecting pipe 112, the opened four first electric valves 111 and the four round tubes 110, extract the air inside each space composed of the box door 102, the transparent plate 104, the sealing ring 103 and the detection groove 115. At the same time, each started pressure sensor 106 will detect the internal pressure of the corresponding space, and transmit the detected pressure data to the controller 105 in the form of electrical signals. Then the controller 105 will receive the received pressure data. Each pressure data is compared with the pressure threshold value (each pressure data corresponds to each pressure threshold value) set in advance by the controller 105. When each pressure data received by the controller 105 is lower than each pressure threshold value (each pressure data corresponds to each pressure threshold value) set in advance by the controller 105, the controller 105 will keep the vacuum pump 114 started, and will not close the four first electric valves 111. At the same time, the controller 105 will also transmit each received data to the display screen 109 in the form of an electrical signal, and display it on the screen of the display screen 109. When each pressure data received by the controller 105 is the same as the corresponding pressure threshold value set in advance by the controller 105, the controller 105 will first close the four first electric valves 111. The first electric valve 111 is closed, the vacuum pump 114 is closed, and the four indicator lights 107 are started. At the same time, the controller 105 transmits each received data to the display screen 109 in the form of an electrical signal and displays it on the screen of the display screen 109. When all the first electric valves 111 and the vacuum pump 114 are in the closed state, and the pressure data received by the controller 105 is always the same as the corresponding pressure threshold value set in advance by the controller 105, it means that the sealing of each space composed of the box door 102, the transparent plate 104, the sealing ring 103 and the detection groove 115 is qualified. At this time, the controller 105 will light up all the indicator lights 107 in green. On the contrary, as long as there is a pressure data higher than the corresponding pressure threshold value, If the corresponding space is not sealed properly, and the corresponding indicator light 107 is red, the staff must either repair it until it is sealed properly or stop using the space. When all the above spaces are sealed properly, the controller 105 is used to open the second electric valve 113 to return the atmospheric pressure inside the above spaces to normal. Then, all the door 102 is removed, and then the assembled and cleaned lithium battery is placed inside each detection slot 115, and the placement position is adjusted. Then, all the door 102 is installed back to the initial position, and then the above steps are repeated to change the pressure inside the above four spaces to the corresponding pressure thresholds set in advance by the controller 105, and then observe each indicator light 107.When all indicator lights 107 are green, all lithium batteries have no problem with sealing and are of qualified quality. When one or more indicator lights 107 are red, it means that the lithium battery corresponding to the red indicator light 107 has a problem with sealing and is of unqualified quality. When the lithium battery has completed the sealing test, the staff will first open the second electric valve 113 to return the atmospheric pressure in each of the above spaces to normal, and then remove all the box doors 102, and then take out the qualified lithium batteries from the corresponding test slots 115, and take out the unqualified lithium batteries after marking them with the marking mechanism 2.

[0041] The effect and working principle of the whole mechanism are as follows: when the assembled lithium battery needs to be tested for sealing, the controller 105 is first connected to the external power supply through the prepared power cord, and then the controller 105 is turned on, and then the pressure threshold (the pressure threshold of each pressure sensor 106 is the same) and the basic usage procedure are set, and then the indicator light 107 is set to green for qualified quality and red for unqualified quality. When everything is ready, the controller 105 is used to start the vacuum pump 114, the four pressure sensors 106 and open the four first electric valves 111. The started vacuum pump 114 will cooperate with the closed second electric valve 113, the gas collecting pipe 112, the opened four first electric valves 111 and the four round tubes 110. In this way, the air inside each space composed of the box door 102, the transparent plate 104, the sealing ring 103 and the detection groove 115 is evacuated. At the same time, each pressure sensor 106 that is started will detect the internal pressure of the corresponding space, and transmit the detected pressure data to the controller 105 in the form of an electrical signal. Then the controller 105 will compare each pressure data received with the pressure threshold value set in advance by the controller 105 (each pressure data corresponds to each pressure threshold value). When each pressure data received by the controller 105 is lower than each pressure threshold value set in advance by the controller 105 (each pressure data corresponds to each pressure threshold value), the controller 105 will keep the vacuum pump 114 started, and at the same time The four first electric valves 111 will not be closed, and the controller 105 will also transmit each received data to the display screen 109 in the form of an electrical signal, and display it on the screen of the display screen 109. When each pressure data received by the controller 105 is respectively the same as the corresponding pressure threshold value set in advance by the controller 105, the controller 105 will first close all the first electric valves 111, then turn off the vacuum pump 114, and then start the four indicator lights 107. At the same time, the controller 105 will also transmit each received data to the display screen 109 in the form of an electrical signal, and display it on the screen of the display screen 109. When all the first electric valves 111 and the vacuum pump 114 are in the closed state, and the pressure data received by the controller 105 is the same as the corresponding pressure threshold value set in advance by the controller 105, the controller 105 will first close all the first electric valves 111, and then turn off the vacuum pump 114, and then start the four indicator lights 107. When the force data is always the same as the corresponding pressure threshold value pre-set by the controller 105, it means that the sealing of each space composed of the box door 102, the transparent plate 104, the sealing ring 103 and the detection groove 115 is qualified. At this time, the controller 105 will light up all the indicator lights 107 in green. On the contrary, as long as there is a pressure data higher than the corresponding pressure threshold, the corresponding space sealing is unqualified, and the corresponding indicator light 107 is red. At this time, the staff should either repair it until it is qualified or stop using this space. When the sealing of all the above spaces is qualified, the controller 105 is used to open the second electric valve 113 to return the atmospheric pressure inside all the above spaces to normal, and then remove all the box doors 102.Then, put the assembled and cleaned lithium battery in each detection slot 115, and adjust the placement position, then install all the box doors 102 back to the initial position, and then repeat the above steps to change the pressure inside the above four spaces to the corresponding pressure thresholds pre-set by the controller 105, and then observe each indicator light 107. When all the indicator lights 107 are green, all the lithium batteries are sealed properly and of qualified quality. When one or more indicator lights 107 are red, it means that the lithium battery corresponding to the red indicator light 107 has a problem with its sealing and is of unqualified quality. When the lithium battery completes the sealing test, the staff will first turn on the second electric valve 113 is opened to allow the atmospheric pressure in each of the above spaces to return to normal, and then all the box doors 102 are removed, and then the qualified lithium batteries are taken out from the corresponding detection slots 115, and then the two third electric cylinders 214 are started by the controller 105. At this time, each of the started third electric cylinders 214 will drive the I-shaped rod 213 connected thereto to move vertically downward with the cooperation of the L-shaped frame 209 and the single-hole plate 210 connected thereto, and then the two I-shaped rods 213 moving vertically downward will squeeze the marking liquid in the corresponding tube body 211 into the corresponding shunt tube 212 with the cooperation of the sealing gasket 215 connected thereto, and then they will be respectively diverted to the corresponding sponge head 208. When each When a proper amount of marking liquid is dripped onto the sponge head 208, the controller 105 is used to simultaneously suspend the two third electric cylinders 214, and then the first electric cylinder 201 is started (the lithium battery inside the corresponding detection tank 115 is unqualified). At this time, the started first electric cylinder 201 will use the connecting block 202 connected thereto to drive the corresponding U-shaped frame 203 to move, and then the moving U-shaped frame 203 will use the two moving blocks 204 connected thereto to drive the corresponding two second electric cylinders 205, two single-hole blocks 207 and two sponge heads 208 to move. When the two sponge heads 208 are moved to a point where they cannot move, the controller 105 will suspend the first electric cylinder 201, and then start the second electric cylinder 205 (for The lithium battery inside the corresponding detection slot 115 is unqualified), and then the second electric cylinder 205 that is started will drive the corresponding sponge head 208 to move with the cooperation of the single hole block 207 connected to it. When the sponge head 208 contacts the outer shell of the lithium battery and returns to its original position, a marking liquid will appear on the outer shell of the lithium battery that is in contact with the sponge head 208, that is, the marking operation of the unqualified lithium battery is realized. Then the controller 105 will use the corresponding first electric cylinder 201 and the previous linkage components to reset the corresponding two second electric cylinders 205 to their original positions, and then take the marked and unqualified lithium batteries out of the detection slot 115, and then carry out the next round of assembled lithium battery sealing test.

[0042] Among them, the steps for filling the marking liquid inside each tube body 211 are: first let each group of moving blocks 204 move in opposite directions, then use the cooperation of the controller 105, the third electric cylinder 214, the sealing gasket 215 and the I-shaped rod 213 to squeeze out the internal gas of the two tube bodies 211, and then put the two output ends of each shunt tube 212 into the bottle with the marking liquid, and then move the two sealing gaskets 215 in the opposite direction until the two sealing gaskets 215 are reset to their original positions. At this time, there is marking liquid inside the two tube bodies 211 and the two shunt tubes 212 (using the principle of syringe water absorption).

[0043] Among them, the controller 105 (PLC controller), pressure sensor 106, indicator light 107, display screen 109, first electric valve 111, second electric valve 113, vacuum pump 114, first electric cylinder 201, second electric cylinder 205, sponge head 208 and third electric cylinder 214 are all existing technologies, and their models can be selected according to actual conditions, and no excessive explanation will be given here.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery assembly detection device, characterized in that: It comprises a detection mechanism (1), wherein the detection mechanism (1) is provided with a marking mechanism (2); The marking mechanism (2) comprises two first electric cylinders (201), two L-shaped frames (209) and a bottom plate (216); the telescopic ends of the two first electric cylinders (201) are both equipped with connecting blocks (202); the lower sides of the two connecting blocks (202) are both fixed with U-shaped frames (203); the bottom of each U-shaped frame (203) is fixed with two symmetrical moving blocks (204); the surface of each moving block (204) is equipped with a second electric cylinder (205); the surface of each moving block (204) is provided with a placement hole (206); the telescopic end of each second electric cylinder (205) is A single-hole block (207) is installed, a sponge head (208) is installed inside the through hole of each single-hole block (207), a single-hole plate (210) is fixed on the surface of each L-shaped frame (209), a tube body (211) is fixedly sleeved inside each single-hole plate (210), a shunt pipe (212) is installed at the output end of each tube body (211), an I-shaped rod (213) is movably sleeved inside each tube body (211), a third electric cylinder (214) is installed on the lower side of each L-shaped frame (209), and a sealing pad (215) is bonded to the bottom of each I-shaped rod (213).

2. The lithium battery assembly detection device according to claim 1, characterized in that: The opposite sides of the two U-shaped frames (203) are in contact with each other, the four moving blocks (204) are divided into two groups, the opposite sides of each group of moving blocks (204) are in contact with each other, the telescopic end of each second electric cylinder (205) is movably sleeved inside each placement hole (206), and each single-hole block (207) is located inside each placement hole (206).

3. The lithium battery assembly detection device according to claim 1, characterized in that: The four sponge heads (208) are divided into two groups, the two output ends of each shunt tube (212) are respectively located above the two sponge heads (208) in each group, the fixed end of each third electric cylinder (214) is movably inserted through the lower side of the L-shaped frame (209), each sealing gasket (215) is movably sleeved inside each tube body (211), and the bottom end surface of each moving block (204) is in contact with the top end surface of the bottom plate (216).

4. The lithium battery assembly detection device according to claim 1, characterized in that: The detection mechanism (1) comprises a processing box (101), the two first electric cylinders (201) are symmetrically installed on the top of the processing box (101), the bottoms of the two connecting blocks (202) and the bottoms of the two U-shaped frames (203) are in contact with the top of the processing box (101), and the surface of each group of moving blocks (204) is in contact with the surface of the processing box (101).

5. The lithium battery assembly detection device according to claim 4, characterized in that: The bottoms of the two L-shaped frames (209) are fixed to the top of the processing box (101), the input ends of the two diversion pipes (212) are movably inserted through the top of the inner wall of the processing box (101), and the bottom plate (216) is fixed inside the processing box (101).

6. The lithium battery assembly detection device according to claim 4, characterized in that: Two box doors (102) are installed on the front surface of the processing box (101) and the rear surface of the processing box (101), and two detection grooves (115) are opened on the front surface of the processing box (101) and the rear surface of the processing box (101), and each of the box doors (102) is located at the notch position of each detection groove (115), and two sealing rings (103) are provided on the front surface of the processing box (101) and the rear surface of the processing box (101).

7. The lithium battery assembly detection device according to claim 6, characterized in that: A transparent plate (104) is fixed inside each of the box doors (102); a side of each of the sealing rings (103) away from the processing box (101) is adhesively connected to a side of each box door (102) close to the processing box (101); and a controller (105), four pressure sensors (106) and four indicator lights (107) are installed on the top of the processing box (101).

8. The lithium battery assembly detection device according to claim 7, characterized in that: The detection ends of the four pressure sensors (106) extend to the interior of each detection slot (115) respectively; a placement rack (108) is fixed to the top of the processing box (101); a display screen (109) is bonded and connected to the interior of the placement rack (108); a circular tube (110) is fixedly passed through the top of the inner wall of each detection slot (115); and a first electric valve (111) is installed at the output end of each circular tube (110).

9. The lithium battery assembly detection device according to claim 8, characterized in that: A gas collecting pipe (112) is installed between the output ends of the four first electric valves (111), a second electric valve (113) is installed at one of the input ends of the gas collecting pipe (112), and a vacuum pump (114) is installed on the top of the processing box (101), and the input end of the vacuum pump (114) is installed with the output end of the gas collecting pipe (112).

10. The lithium battery assembly detection device according to claim 9, characterized in that: The four pressure sensors (106), the four indicator lights (107), the display screen (109), the four first electric valves (111), the second electric valve (113) and the vacuum pump (114) are all electrically connected to the controller (105); the two first electric cylinders (201), the four second electric cylinders (205) and the two third electric cylinders (214) are all electrically connected to the controller (105).

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