Voltage testing machine for lithium battery

Abstract

The embodiment of the invention provides a voltage testing machine for a lithium battery, and relates to the technical field of lithium battery testing machines. A voltage testing machine of a lithium battery comprises a rack, the top of the rack is fixedly connected with a table top, the two sides of the rack are fixedly connected with fixing cylinders, and air cylinder barrels are fixed to the opposite angles of the bottoms of the fixing cylinders; an adjusting assembly and a blocking assembly which are used for sealing the table top are arranged on the inner side of the fixing cylinder, the adjusting assembly comprises a double-end motor embedded in the table frame, and the blocking assembly comprises a protective cover clamped to the table top; a working assembly is arranged in the air cylinder barrel and comprises main circular gears fixed to two output shafts of the double-end motor, a supply assembly and a pressing assembly which are used in cooperation with the protective cover are arranged on one side of the working assembly, and the supply assembly comprises a main pressurizing box embedded in the rack. The safety performance detection function is realized, and the test diversity is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium battery testers, and in particular relates to a lithium battery voltage tester. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. With the increasing development of new energy technologies, lithium batteries have been widely used. After the production of lithium batteries is completed, a voltage tester is required to perform performance testing on the lithium batteries to ensure their pass rate.

[0003] In the prior art (publication number CN218331673U, patent name is a patent application for a lithium battery voltage tester), the clamp on the test box can automatically clamp and restrict the lithium battery and test the voltage. After the test, the lithium battery is embedded in the test box, and the convex plate can be used to push the lithium battery out, which not only saves time for taking out the lithium battery but also improves work efficiency. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] During the performance test of lithium batteries by voltage testers, most of them can only test their voltage performance. Since there are combustible substances in lithium batteries, they are easily damaged by external forces, causing the combustible substances inside to quickly react with the air, thereby generating a large amount of smoke and even causing a fire. It does not have a safety performance test function, resulting in a relatively simple test. Summary of the invention

[0005] The present application aims to at least solve one of the technical problems existing in the prior art, that is, the lack of a safety performance detection function, which results in a relatively single test. To this end, the present application proposes a voltage tester for a lithium battery.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows: A lithium battery voltage tester comprises a stand, the top of which is fixedly connected to a table top, and both sides of the stand are fixedly connected to fixed cylinders, and the bottom of the fixed cylinder is diagonally fixed to a cylinder barrel; The inner side of the fixed cylinder is respectively provided with an adjustment component and a plugging component for sealing the table surface, and the adjustment component includes a double-headed motor embedded in the table frame, and the plugging component includes a protective cover clamped on the table surface; A working assembly is arranged in the cylinder barrel, and the working assembly includes a main circular gear fixed on the two output shafts of the double-headed motor. A supply assembly and a downward pressure assembly used in conjunction with a protective cover are arranged on one side of the working assembly, and the supply assembly includes a main boost box embedded in the test stand.

[0007] Preferably: the adjustment component also includes an electric push rod embedded in the two output shafts of the double-headed motor, and the piston rod of the electric push rod is fixedly connected to the main bevel gear, the bottom of the inner cavity of the fixed cylinder is rotatably connected to a secondary bevel gear used in conjunction with the main bevel gear, and the top of the secondary bevel gear is fixedly connected to a threaded rod that rotatably cooperates with the fixed cylinder, and a threaded sleeve is threadedly connected to the threaded rod.

[0008] Preferably: the sealing assembly also includes a connecting piece fixed to the inner side of the threaded sleeve and slidably matched with the fixed cylinder, and the inner side of the connecting piece is fixedly connected to the protective cover, both sides of the inner cavity of the protective cover are fixedly connected to a slide frame, and a buffer spring is embedded in the top of the inner cavity of the slide frame, the bottom of the buffer spring is fixedly connected to a T-shaped slide rod slidably matched with the slide frame, and the bottom of the T-shaped slide rod is fixedly connected to a positioning head.

[0009] Preferably: the working assembly also includes a secondary circular gear meshed at the bottom of the main circular gear, and the inner side of the secondary circular gear is fixedly connected to a swing arm through a fixing rod, the other end of the swing arm is rotatably connected to a connecting rod, and the other end of the connecting rod is hinged to a piston that slides with the cylinder barrel, the outer side of the cylinder barrel is connected to a first three-way valve, and the outer end of the first three-way valve is connected to an intake pipe with an intake valve.

[0010] Preferably: the supply assembly also includes a straight pipe connected to one side of the main booster box, and the other end of the straight pipe is connected to an auxiliary booster box fixedly matched with the stand, one side of the auxiliary booster box is connected to a long telescopic pipe, and the top end of the long telescopic pipe is connected to a three-way pipe, and one end of the three-way pipe is connected to a main pipe rack that penetrates and cooperates with the protective cover.

[0011] Preferably: the pressure-down assembly comprises a short telescopic tube connected to one end of the main pipe rack, and the other end of the short telescopic tube is connected to a sealing cylinder, the inner cavity of the sealing cylinder is slidably connected to a T-shaped slide seat, and a return spring is sleeved on the T-shaped slide seat, one end of the sealing cylinder is connected to a pressure relief pipe with a pressure relief valve, and the bottom of the T-shaped slide seat is fixedly connected to a first pressure-down head.

[0012] Preferably: a sealing groove which is clamped with the protective cover is provided on the table top, and fire extinguishing windows with transparent sealing covers are provided on both sides of the protective cover, fire extinguishers are clamped on both sides of the stand, and smoke sensors and open flame sensors are respectively embedded on both sides of the top of the protective cover.

[0013] Preferably: lithium batteries are placed equidistantly on the table, and a voltage detector matched with the protective cover is inserted at one end of the lithium battery, a timer is embedded on the front of the stand, and a ventilation cover with a filter is connected to the front and back sides of the stand.

[0014] Preferably: an electric slide rail is embedded in the top of the inner cavity of the protective cover, and an electric slide rail seat is slidably connected to the electric slide rail, a slide plate fixedly matched with the sealing cylinder is fixedly connected to the bottom of the electric slide rail seat, and the slide plate is slidably connected to the protective cover.

[0015] Preferably, the bottoms of the other two T-shaped slides are fixedly connected with a second pressing head and a third pressing head respectively, and the first pressing head, the second pressing head and the third pressing head can be threadedly connected to the bottom of the T-shaped slide by a screw.

[0016] A lithium battery voltage tester of the present invention has the following advantages: 1. The voltage tester of the lithium battery is first provided with a unified driving source by a double-head motor, and two electric push rods are used to adjust the meshing stroke between the two sets of main bevel gears and the auxiliary bevel gears, and then two threaded rods drive the two sets of threaded sleeves to be raised and lowered. The two sets of threaded sleeves drive the protective cover to be stuck in the blocking groove on the table through two sets of connecting parts, so as to achieve a full sealing effect on the space on the table, which not only plays a safety protection role, but also prevents the external environment from interfering with the testing work of the lithium battery on the table, or detaches from the blocking groove on the table to the initial open position, releases the sealing measure of the protective cover on the lithium battery on the table, and facilitates the removal of the lithium battery before and after the test. At the same time, two rows of slide racks, buffer springs, T-shaped slide rods and positioning heads are used to press down or lift and disengage the positive and negative ends of the lithium battery, so as to achieve the rapid positioning and rapid release of the lithium battery.

[0017] 2. The voltage tester of the lithium battery, then, two sets of main circular gears drive two sets of sub circular gears to rotate, and the two sets of sub circular gears drive the pistons on the two connecting rods through the two sets of swing arms to perform reciprocating work in the two sets of cylinder barrels, and generate a pressurized air source in the two sets of cylinder barrels, and the air intake pipe on the first three-way valve provides air supply to the two sets of cylinder barrels, and the pressurized air source generated in the two sets of cylinder barrels is then discharged from the exhaust ports on the two sets of first three-way valves. At the same time, the pressurized air source generated in the two sets of cylinder barrels is supplied to the main supercharging box through the exhaust ports on the two sets of first three-way valves, and then supplied to the sub-supercharging box through the straight pipe, so as to expand the temporary storage space of the pressurized air source, and is supplied to the main pipe rack on the three-way pipe through the long telescopic pipe, so as to realize the supply and transportation effect of the pressurized air source.

[0018] 3. A voltage tester for a lithium battery. Then, the pressurized air source in the main pipe rack first reaches the top space of the inner cavity of the three groups of sealing cylinders through three short telescopic tubes, and under the action of pressure, forces the three groups of T-shaped slides to synchronously drive the first down-pressing heads, the second down-pressing heads and the third down-pressing heads of different shapes to press down to destroy the lithium battery with the help of the elastic buffering and elastic resetting of the three resetting springs, simulating the destruction of the lithium battery in the real environment, so that the destroyed lithium battery contacts the air in the protective cover, and tests whether the destroyed lithium battery has a large amount of smoke or open flame combustion. At the same time, it can also test whether the lithium battery has spreading combustion, which effectively tests the safety performance of the lithium battery and increases the diversity of lithium battery testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a diagram showing the initial state of the structure of a lithium battery voltage tester of the present invention; Figure 2 A structural test state diagram of a lithium battery voltage tester of the present invention; Figure 3 A cross-sectional view of a voltage tester structure of a lithium battery of the present invention in a test state; Figure 4 A bottom view of the initial state of the structure of a lithium battery voltage tester of the present invention; Figure 5 A bottom view of the adjustment assembly and the protective cover structure of the present invention; Figure 6 A side view of the adjustment assembly and protective cover structure of the present invention; Figure 7 It is a side cross-sectional view of the table, protective cover, plugging assembly and lithium battery structure of the present invention; Figure 8 A partial cross-sectional view of the plugging assembly structure of the present invention; Fig. 9 It is a top view of the cylinder barrel, the regulating assembly, the working assembly and the supply assembly structure of the present invention; Fig.10 It is a side view of the structure of the regulating assembly and the working assembly of the present invention; Fig.11 It is a partial side view of the first three-way valve and supply assembly structure of the present invention; Fig.12It is a partial side cross-sectional view of the protective cover, the blocking assembly, the supply assembly and the pressing assembly structure of the present invention; Fig.13 It is a side view of the supply assembly and the pressing assembly structure of the present invention; Fig.14 It is a bottom exploded view of the pressing assembly, the second pressing head and the third pressing head structure of the present invention; Fig.15 It is a partial side view of the protective cover, supply assembly and auxiliary heating assembly structure of the present invention; Fig.16 It is a bottom view of the long telescopic tube, three-way tube and auxiliary heating component structure of the present invention.

[0021] Explanation of the marks in the figure: 1. Stand; 2. Table; 3. Fixed cylinder; 4. Cylinder barrel; 5. Adjustment assembly; 51. Double-head motor; 52. Electric push rod; 53. Main bevel gear; 54. Sub bevel gear; 55. Threaded rod; 56. Threaded sleeve; 6. Blocking assembly; 61. Connector; 62. Protective cover; 63. Sliding cylinder frame; 64. Buffer spring; 65. T-shaped sliding rod; 66. Positioning head; 7. Working assembly; 71. Main circular gear; 72. Sub circular gear; 73. Swing arm; 74. Connecting rod; 75. Piston; 76. First three-way valve; 8. Supply assembly; 81. Main boost box; 82. Straight pipe; 83. Sub boost box; 84. Long telescopic pipe; 85. Three-way pipe; 86. Main pipe rack; 9, down-pressure assembly; 91, short telescopic tube; 92, sealing cylinder; 93, T-type slide seat; 94, return spring; 95, pressure relief pipe; 96, first down-pressure head; 10, auxiliary heating assembly; 101, elbow; 102, second three-way valve; 103, micro hot and cold all-in-one machine; 104, temperature sensor; 105, conveying hood; 106, flow equalizing plate; 11, blocking groove; 12, fire extinguishing window; 13, fire extinguisher; 14, lithium battery; 15, voltage detector; 16, electric slide rail; 17, electric slide rail slide seat; 18, slide plate; 19, second down-pressure head; 20, third down-pressure head; 21, screw; 22, smoke sensor; 23, open flame sensor; 24, ventilation hood. DETAILED DESCRIPTION

[0022] The present invention is specifically described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1-Figure 16As shown, a lithium battery voltage tester of the present invention comprises a stand 1, a table 2 is fixedly connected to the top of the stand 1, and a fixed cylinder 3 is fixedly connected to both sides of the stand 1, and a cylinder tube 4 is fixed diagonally to the bottom of the fixed cylinder 3; an adjustment component 5 and a plugging component 6 for sealing the table 2 are respectively arranged on the inner side of the fixed cylinder 3, and the adjustment component 5 comprises a double-headed motor 51 embedded in the stand 1, and the plugging component 6 comprises a protective cover 62 clamped on the table 2, so as to achieve a full sealing effect on the space on the table 2, and at the same time play a safety protection role, also avoid the external environment from interfering with the testing work of the lithium battery 14 on the table 2; A working component 7 is arranged in the cylinder barrel 4, and the working component 7 includes a main circular gear 71 fixed on the two output shafts of the double-headed motor 51, and a supply component 8 and a downward pressure component 9 used in conjunction with the protective cover 62 are arranged on one side of the working component 7, and the supply component 8 includes a main boost box 81 embedded in the test bench 1, which can test whether there is a large amount of smoke or open flame burning in the damaged lithium battery 14, and can also test whether there is spreading combustion in the lithium battery 14, which effectively tests the safety performance of the lithium battery 14 and increases the diversity of the lithium battery 14 test.

[0023] like Figure 5-Figure 14 As shown, the adjustment component 5 also includes an electric push rod 52 embedded in the two output shafts of the double-headed motor 51, and the piston rod of the electric push rod 52 is fixedly connected to the main bevel gear 53, and the bottom of the inner cavity of the fixed cylinder 3 is rotatably connected to the auxiliary bevel gear 54 used in conjunction with the main bevel gear 53. The double-headed motor 51 provides a unified driving source, and the two electric push rods 52 adjust the meshing stroke between the two groups of main bevel gears 53 and the auxiliary bevel gear 54, and the top of the auxiliary bevel gear 54 is fixedly connected to a threaded rod 55 that rotates with the fixed cylinder 3, and a threaded sleeve 56 is threadedly connected to the threaded rod 55, and the two threaded rods 55 drive the two groups of threaded sleeves 56 to perform lifting and lowering adjustment; The plugging assembly 6 also includes a connector 61 fixed to the inner side of the threaded sleeve 56 and slidingly matched with the fixed cylinder 3, and the inner side of the connector 61 is fixedly connected to the protective cover 62. The two groups of threaded sleeves 56 drive the protective cover 62 to be stuck in the plugging groove 11 on the table 2 through the two groups of connectors 61, so as to achieve a full sealing effect on the space on the table 2, which not only plays a safety protection role, but also prevents the external environment from interfering with the testing work of the lithium battery 14 on the table 2, or detaches from the plugging groove 11 on the table 2 to the initial open position, and releases the seal of the protective cover 62 on the lithium battery 14 on the table 2 Measures are taken to facilitate the removal of the lithium battery 14 before and after the test. Both sides of the inner cavity of the protective cover 62 are fixedly connected with a slide frame 63, and a buffer spring 64 is embedded in the top of the inner cavity of the slide frame 63. The bottom of the buffer spring 64 is fixedly connected with a T-shaped slide bar 65 that slides with the slide frame 63, and the bottom of the T-shaped slide bar 65 is fixedly connected with a positioning head 66. The two rows of slide frames 63, buffer springs 64, T-shaped slide bars 65 and positioning heads 66 are used to press down or lift and disengage the positive and negative ends of the lithium battery 14, so as to achieve the rapid positioning and rapid release effect of the lithium battery 14. A sealing groove 11 is provided on the table top 2 to be engaged with the protective cover 62, which plays a role of sealing and limiting between the table top 2 and the protective cover 62, and fire extinguishing windows 12 with transparent sealing covers are provided on both sides of the protective cover 62. Fire extinguishers 13 are connected on both sides of the stand 1 to facilitate immediate fire extinguishing at the location where an open fire occurs in the protective cover 62, and smoke sensors 22 and open fire sensors 23 are respectively embedded on both sides of the top of the protective cover 62 to monitor the smoke and open fire in the protective cover 62 in real time. Lithium batteries 14 are placed equidistantly on the table top 2, and a voltage detector 15 that is embedded in the protective cover 62 is inserted at one end of the lithium battery 14 to perform a voltage test on the lithium battery 14. A timer is embedded on the front of the stand 1, and a ventilation hood 24 with a filter is connected to the front and back sides of the stand 1. While ventilating the heat in the stand 1, it also provides air intake support for the cylinder barrel 4.

[0024] The working assembly 7 also includes a secondary circular gear 72 meshed with the bottom of the main circular gear 71. The two groups of main circular gears 71 drive the two groups of secondary circular gears 72 to rotate, and the inner side of the secondary circular gear 72 is fixedly connected to a swing arm 73 through a fixing rod. The other end of the swing arm 73 is rotatably connected to a connecting rod 74, and the other end of the connecting rod 74 is hinged with a piston 75 that slides with the cylinder barrel 4. The two groups of secondary circular gears 72 drive the pistons 75 on the two connecting rods 74 through the two groups of swing arms 73 to reciprocate in the two groups of cylinder barrels 4 and generate a pressurized air source in the two groups of cylinder barrels 4. The outer side of the cylinder barrel 4 is connected to a first three-way valve 76, and the outer end of the first three-way valve 76 is connected to an intake pipe with an intake valve. The intake pipe on the first three-way valve 76 provides an air source supply to the two groups of cylinder barrels 4, and the pressurized air source generated in the two groups of cylinder barrels 4 is then discharged from the exhaust ports on the two groups of first three-way valves 76. The supply assembly 8 also includes a straight pipe 82 connected to one side of the main supercharger box 81, and the other end of the straight pipe 82 is connected to an auxiliary supercharger box 83 fixedly matched with the stand 1. The boosted air source generated in the two groups of cylinder barrels 4 is supplied to the main supercharger box 81 through the exhaust ports on the two groups of first three-way valves 76, and then supplied to the auxiliary supercharger box 83 through the straight pipe 82, so as to expand the temporary storage space of the boosted air source. One side of the auxiliary supercharger box 83 is connected to a long telescopic pipe 84, and the top end of the long telescopic pipe 84 is connected to a three-way pipe 85, and one end of the three-way pipe 85 is connected to a main pipe rack 86 that penetrates and cooperates with the protective cover 62. The boosted air source in the auxiliary supercharger box 83 is supplied to the main pipe rack 86 on the three-way pipe 85 by the long telescopic pipe 84, so as to realize the supply and delivery effect of the boosted air source. The pressing assembly 9 includes a short telescopic tube 91 connected to one end of the main pipe frame 86, and the other end of the short telescopic tube 91 is connected to a sealing cylinder 92. The pressurized air source in the main pipe frame 86 first reaches the top space of the inner cavity of the three groups of sealing cylinders 92 through the three short telescopic tubes 91. The inner cavity of the sealing cylinder 92 is slidably connected with a T-shaped slide 93, and the T-shaped slide 93 is sleeved with a return spring 94. One end of the sealing cylinder 92 is connected to a pressure relief pipe 95 with a pressure relief valve, and the bottom of the T-shaped slide 93 is fixedly connected to a first pressing head 96. Under the action of the pressure force, the three groups of T-shaped slides 93 are forced to move with the help of three return springs. Under the elastic buffering and elastic reset of the positioning spring 94, the first pressing head 96, the second pressing head 19 and the third pressing head 20 of different shapes are synchronously driven to press down to destroy the lithium battery 14, simulating the destruction of the lithium battery 14 in the real environment, so that the damaged lithium battery 14 is in contact with the air in the protective cover 62, and the damaged lithium battery 14 is tested for a large amount of smoke or open flame combustion. At the same time, it can also be tested for the spread of combustion in the lithium battery 14, which effectively tests the safety performance of the lithium battery 14 and increases the diversity of the lithium battery 14 test; An electric slide rail 16 is embedded in the top of the inner cavity of the protective cover 62, and an electric slide rail slide seat 17 is slidably connected to the electric slide rail 16. A slide plate 18 fixedly matched with the sealing cylinder 92 is fixedly connected to the bottom of the electric slide rail slide seat 17, and the slide plate 18 is slidably connected to the protective cover 62, which is convenient for displacement adjustment of the position of the sealing cylinder 92 and for perforation damage to different damage positions of the lithium battery 14. The bottoms of the other two T-shaped slides 93 are respectively fixedly connected with the second pressing head 19 and the third pressing head 20, and the first pressing head 96, the second pressing head 19 and the third pressing head 20 can be threadedly connected to the bottom of the T-shaped slide 93 by a screw 21. The first pressing head 96 adopts a pointed cone design, the second pressing head 19 adopts a prismatic design, and the third pressing head 20 adopts a prism design, so as to observe the smoke or combustion of the lithium battery 14 in different damage shapes.

[0025] like Figure 15-16As shown, during the test of the lithium battery 14, due to the influence of temperature, the voltage of the lithium battery 14 is prone to instability, and it is impossible to provide a high-precision test effect for the lithium battery 14 under the condition of temperature control change. An auxiliary heating component 10 that provides temperature control conditions for the lithium battery 14 is arranged in the protective cover 62, and the auxiliary heating component 10 includes a bend pipe 101 connected to the top of the three-way pipe 85, and the other end of the bend pipe 101 is connected to a second three-way valve 102, and the air inlet of the second three-way valve 102 is connected to a micro-hot and cold integrated machine 103 fixedly matched with the protective cover 62, the top of the second three-way valve 102 is embedded with a temperature sensor 104, and the bottom of the second three-way valve 102 is connected to The conveying cover 105 is connected and cooperated with the protective cover 62, and a flow equalizing plate 106 is embedded on the top of the protective cover 62 and is connected and cooperated with the conveying cover 105. First, the pressurized air source in the three-way pipe 85 is supplied to the second three-way valve 102 through the elbow 101, and according to the test requirements, the micro-hot and cold integrated machine 103 is controlled to provide a heat source or a cold source supply and supply it to the second three-way valve 102. Under the action of pressure, the heat source or the cold source is forced to quickly pass through the flow equalizing plate 106 at the bottom of the conveying cover 105 to reach the protective cover 62 in a blocked state, so as to provide a temperature control condition of temperature difference change for the lithium battery 14 in the test state, and test the voltage of the lithium battery 14 under high or low temperature conditions.

[0026] A working principle of a lithium battery voltage tester: firstly, three lithium batteries 14 to be tested are placed in the reserved slots on the table 2, and a voltage detector 15 is inserted into one end of the three lithium batteries 14 to be tested, and the voltage of the three lithium batteries 14 is detected in real time. At the same time, the two electric push rods 52 are controlled to start and drive the two sets of main bevel gears 53 to move outwards and get stuck in the meshing parts of the two sets of auxiliary bevel gears 54, and then the double-headed motor 51 is controlled to start and drive the two sets of auxiliary bevel gears 54 to rotate through the two sets of main bevel gears 53 that are meshed in place, and the two sets of auxiliary bevel gears 54 drive the two threaded rods 55 to rotate forwardly, and the two threaded rods 55 drive the two sets of threaded sleeves 56 to move downward, and the two sets of threaded sleeves 56 drive the protective cover 62 to move downwards and get stuck in the blocking groove 11 on the table 2 through the two sets of connecting pieces 61. At this point, the space on the table 2 is in a blocked state; At the same time, the protective cover 62 in the downward state drives the T-shaped slide bars 65 and the positioning heads 66 on the two rows of slide racks 63 downward and clamps them to the positive and negative ends of the three lithium batteries 14. As the protective cover 62 continues to move downward, the reaction force generated by the three lithium batteries 14 on the positioning heads 66 forces the T-shaped slide bars 65 to slide up in the slide rack 63 and squeeze the buffer springs 64. After the protective cover 62 is moved down and blocked, the positioning heads 66 also press down and position the positive and negative ends of the three lithium batteries 14. At this time, the protective cover 62 also drives the T-shaped slide seats 93 and the first lower pressure heads 96, the second lower pressure heads 19 and the third lower pressure heads 20 on the three groups of sealing cylinders 92 to move down to the first damage position of the three lithium batteries 14, then the double-headed motor 51 is controlled to pause, and then the two electric push rods 52 are controlled to close and drive the two groups of main bevel gears 53 to move inward to disengage the meshing parts of the two groups of secondary bevel gears 54 to the initial position, and there is still air inside the protective cover 62 after it moves down and blocks. Next, the double-headed motor 51 is controlled to start again and drive the two sets of main circular gears 71 to rotate. The two sets of main circular gears 71 drive the swing arms 73 on the two sets of sub circular gears 72 to rotate accordingly. The two sets of swing arms 73 drive the pistons 75 on the two connecting rods 74 to reciprocate in the two sets of cylinder barrels 4. When the two sets of pistons 75 are in the return intake state in the two sets of cylinder barrels 4, the intake valve on the intake pipe is controlled to open, and the first three-way valve 76 controls the channel in the exhaust port to be in a closed state. Then, the outside air passes through the filter screen on the ventilation cover 24 and reaches the two sets of cylinder barrels 4. When the two sets of pistons 75 are in the process exhaust state in the two sets of cylinder barrels 4, on the contrary, the pure air source entering the two sets of cylinder barrels 4 is pressurized and supplied to the main supercharging box 81, and then supplied to the auxiliary supercharging box 83 through the straight-through pipe 82, thereby expanding the temporary storage space of the pressurized air source. Next, the pressurized air source supplied into the auxiliary boost box 83 is supplied into the main pipe frame 86 through the long telescopic tube 84 and the three-way tube 85, and reaches the upper end space of the inner cavity of the three groups of sealing cylinders 92 through the three short telescopic tubes 91. With the continuous supply of the pressurized air source and under the action of the pressure, the T-shaped slide 93 in the three groups of sealing cylinders 92 is forced to slide down and compress the reset spring 94. The T-shaped slide 93 also drives the first down-pressing head 96, the second down-pressing head 19 and the third down-pressing head 20 to move downward synchronously and perforate the first damage position of the three lithium batteries 14. The shapes of the three lower pressure heads 20 are different, so the perforation damage shapes of the first damage positions of the three lithium batteries 14 are also different. After the combustible materials in the three lithium batteries 14 after the perforation damage come into contact with the air reserved in the protective cover 62, the conditions of the three lithium batteries 14 after the perforation damage are observed. If a large amount of smoke or even open flames occur in one, two or three of the lithium batteries 14, the protective cover 62 will block it, and the smoke sensor 22 and the open flame sensor 23 will monitor the smoke or open flames generated by the three lithium batteries 14 in real time, and the fire extinguishing window 12 will be opened immediately and the fire extinguisher 13 will be used to extinguish the fire. If the three lithium batteries 14 do not produce smoke or burn after being perforated and damaged at the first damage position, the pressure relief valves on the three pressure relief pipes 95 are first controlled to open, so that the pressurized gas source in the upper end space of the inner cavity of the three groups of sealing cylinders 92 is depressurized and discharged, and under the action of the reset elastic force of the reset spring 94, the first down-pressing head 96, the second down-pressing head 19 and the third down-pressing head 20 on the T-shaped slide 93 are driven to move upward and leave the first damage position of the three lithium batteries 14, and then the electric slide rail 16 is controlled to drive the three groups of sealing cylinders 92 under the slide plate 18 to move through the electric slide rail slide seat 17, and drive the T-shaped slide 93 and the first down-pressing head 20 on the three groups of sealing cylinders 92 to move upward. The first pressing head 96, the second pressing head 19 and the third pressing head 20 reach the second destruction position of the three lithium batteries 14. Similarly, the second destruction position of the three lithium batteries 14 is subjected to perforation destruction treatment of different shapes, and the smoke and open flame of the three lithium batteries 14 are observed. If the three lithium batteries 14 after the perforation destruction at the second destruction position also do not produce smoke and combustion, similarly, the first pressing head 96, the second pressing head 19 and the third pressing head 20 are continued to be controlled to reach the third destruction position of the three lithium batteries 14. If there is still no smoke or combustion, the safety performance of the batch of lithium batteries 14 related to smoke and open flames is passed; Before the perforation damage test of the three lithium batteries 14, the pressurized air source supplied into the three-way pipe 85 passes through the elbow 101 to reach the second three-way valve 102, and according to the test temperature requirement, the micro-hot and cold integrated machine 103 is controlled to open and generate a heat source or a cold source supply, and is supplied to the second three-way valve 102. Under the action of pressure, the heat source or the cold source supplied into the second three-way valve 102 is forced to be supplied to the protective cover 62 in a sealed state through the flow equalizing plate 106 on the conveying cover 105 after real-time monitoring by the temperature sensor 104, and the sealed space blocked by the protective cover 62 and the table 2 is heated or cooled, and the value changes of the voltage detector 15 on the three lithium batteries 14 are observed to simulate the voltage changes of the three lithium batteries 14 under high or low temperature conditions.

[0027] It should be noted that the specific models and specifications of the double-headed motor 51, the electric push rod 52, the micro-hot and cold integrated machine 103, the voltage detector 15 and the electric slide rail 16 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0028] The double-headed motor 51, the electric push rod 52, the micro hot and cold integrated machine 103, the voltage detector 15, the electric slide rail 16 and the power supply circuits of various valves and sensors are clear to those skilled in the art and will not be described in detail here.

[0029] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A lithium battery voltage tester, comprising a stand (1), characterized in that: The top of the platform (1) is fixedly connected to a tabletop (2), and both sides of the platform (1) are fixedly connected to fixed cylinders (3), and the bottom of the fixed cylinder (3) is diagonally fixed to a cylinder cylinder (4); An adjusting component (5) and a sealing component (6) for sealing the table top (2) are respectively arranged on the inner side of the fixed cylinder (3); the adjusting component (5) comprises a double-headed motor (51) embedded in the table frame (1), and the sealing component (6) comprises a protective cover (62) clamped on the table top (2); A working assembly (7) is arranged in the cylinder barrel (4), and the working assembly (7) includes a main circular gear (71) fixed on two output shafts of a double-headed motor (51), and a supply assembly (8) and a pressure assembly (9) used in conjunction with a protective cover (62) are arranged on one side of the working assembly (7), and the supply assembly (8) includes a main boost box (81) embedded in the stand (1).

2. A lithium battery voltage tester according to claim 1, characterized in that: The adjustment assembly (5) further comprises an electric push rod (52) embedded in two output shafts of the double-headed motor (51), wherein the piston rod of the electric push rod (52) is fixedly connected to a main bevel gear (53), the bottom of the inner cavity of the fixed cylinder (3) is rotatably connected to a secondary bevel gear (54) used in conjunction with the main bevel gear (53), and the top of the secondary bevel gear (54) is fixedly connected to a threaded rod (55) rotatably matched with the fixed cylinder (3), and a threaded sleeve (56) is threadedly connected to the threaded rod (55).

3. A lithium battery voltage tester according to claim 2, characterized in that: The plugging assembly (6) further comprises a connecting piece (61) fixed to the inner side of the threaded sleeve (56) and slidably engaged with the fixed cylinder (3), and the inner side of the connecting piece (61) is fixedly connected to the protective cover (62), both sides of the inner cavity of the protective cover (62) are fixedly connected to a slide frame (63), and a buffer spring (64) is embedded in the top of the inner cavity of the slide frame (63), the bottom of the buffer spring (64) is fixedly connected to a T-shaped slide rod (65) slidably engaged with the slide frame (63), and the bottom of the T-shaped slide rod (65) is fixedly connected to a positioning head (66).

4. A lithium battery voltage tester according to claim 3, characterized in that: The working assembly (7) further comprises a secondary circular gear (72) meshed with the bottom of the primary circular gear (71), and a swing arm (73) is fixedly connected to the inner side of the secondary circular gear (72) via a fixing rod, the other end of the swing arm (73) is rotatably connected to a connecting rod (74), and the other end of the connecting rod (74) is hingedly connected to a piston (75) that is slidably matched with the cylinder barrel (4), the outer side of the cylinder barrel (4) is connected to a first three-way valve (76), and the outer end of the first three-way valve (76) is connected to an intake pipe with an intake valve.

5. A lithium battery voltage tester according to claim 4, characterized in that: The supply assembly (8) further comprises a straight pipe (82) connected to one side of the main booster box (81), and the other end of the straight pipe (82) is connected to an auxiliary booster box (83) fixedly matched with the stand (1), one side of the auxiliary booster box (83) is connected to a long telescopic pipe (84), and the top end of the long telescopic pipe (84) is connected to a three-way pipe (85), and one end of the three-way pipe (85) is connected to a main pipe frame (86) that penetrates and matches the protective cover (62).

6. A lithium battery voltage tester according to claim 5, characterized in that: The pressing assembly (9) comprises a short telescopic tube (91) connected to one end of the main pipe frame (86), and the other end of the short telescopic tube (91) is connected to a sealing cylinder (92), the inner cavity of the sealing cylinder (92) is slidably connected to a T-shaped slide seat (93), and the T-shaped slide seat (93) is sleeved with a return spring (94), one end of the sealing cylinder (92) is connected to a pressure relief pipe (95) with a pressure relief valve, and the bottom of the T-shaped slide seat (93) is fixedly connected to a first pressing head (96).

7. A lithium battery voltage tester according to claim 6, characterized in that: The table top (2) is provided with a blocking groove (11) that is clamped with the protective cover (62), and fire extinguishing windows (12) with transparent blocking covers are provided on both sides of the protective cover (62). Fire extinguishers (13) are clamped on both sides of the stand (1), and a smoke sensor (22) and an open flame sensor (23) are respectively embedded on both sides of the top of the protective cover (62).

8. A lithium battery voltage tester according to claim 7, characterized in that: Lithium batteries (14) are placed at equal intervals on the table top (2), and a voltage detector (15) that cooperates with the protective cover (62) is inserted into one end of the lithium battery (14). A timer is embedded in the front of the stand (1), and a ventilation cover (24) with a filter is connected to both the front and rear sides of the stand (1).

9. A lithium battery voltage tester according to claim 8, characterized in that: An electric slide rail (16) is embedded in the top of the inner cavity of the protective cover (62), and an electric slide rail seat (17) is slidably connected to the electric slide rail (16), and a slide plate (18) fixedly matched with the sealing cylinder (92) is fixedly connected to the bottom of the electric slide rail seat (17), and the slide plate (18) is slidably connected to the protective cover (62).

10. A lithium battery voltage tester according to claim 9, characterized in that: The bottoms of the other two T-shaped slides (93) are respectively fixedly connected with a second pressing head (19) and a third pressing head (20), and the first pressing head (96), the second pressing head (19) and the third pressing head (20) can be threadedly connected to the bottom of the T-shaped slide (93) using a screw rod (21).

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