CN111504566A - Square lithium battery negative pressure passage detection device, detection system and detection method - Google Patents
Square lithium battery negative pressure passage detection device, detection system and detection method Download PDFInfo
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- CN111504566A CN111504566A CN202010135341.5A CN202010135341A CN111504566A CN 111504566 A CN111504566 A CN 111504566A CN 202010135341 A CN202010135341 A CN 202010135341A CN 111504566 A CN111504566 A CN 111504566A
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- 238000001514 detection method Methods 0.000 title claims abstract description 75
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 119
- 229910052802 copper Inorganic materials 0.000 claims abstract description 119
- 239000010949 copper Substances 0.000 claims abstract description 119
- 239000000523 sample Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000008054 signal transmission Effects 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 21
- 238000012360 testing method Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 3
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000001994 activation Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The detection device comprises a fixing unit, a detection system and a detection method, wherein the fixing unit comprises an outer frame and a top cover; the negative pressure detection unit comprises a tool valve pipe and a vacuum digital display meter, and the tool valve pipe is arranged in the installation cavity; the vacuum digital display meter is embedded on the front panel of the outer frame; the signal transmission unit comprises a router and a pair of power supply copper bars; the detection system comprises chemical composition and partial volume equipment and a detection device, wherein a motor mechanism packaging body is suspended on the top of the chemical composition and partial volume equipment, and the square lithium battery negative pressure passage detection device is arranged in the chemical composition and partial volume equipment; the detection method comprises the following steps: the moving mechanism assembly body descends, and the power supply probe is connected with the detection device so as to supply power to the router; and executing an instruction of vacuumizing the negative pressure passage, and transmitting a vacuum degree signal to external equipment by the router so as to detect whether the negative pressure passage leaks air or not. The invention has the beneficial effects that: simple structure, can specifically detect which negative pressure passageway gas leakage.
Description
Technical Field
The invention relates to a square lithium battery negative pressure passage detection device, a detection system and a detection method, and belongs to the field of manufacturing of lithium battery formation test equipment.
Background
In the testing process of the square lithium battery, the formation test is to charge the lithium battery with small current to activate active substances in the battery and form an SEI film on the surface of a negative electrode material of the battery; in the formation and activation process of the lithium battery, the electrodes react with the electrolyte, and the electrolyte is decomposed, so that gases are generated, the battery is expanded due to the generation of the gases, and the gases need to be discharged in time in the expansion process of the battery. During the air exhaust process, if the negative pressure channel of the air exhaust finds air leakage or blockage, the air exhaust can fail. Therefore, the leakage condition of the pressure generation passage of the exhaust gas needs to be detected regularly to judge that the pressure generation passage can operate normally in the exhaust process.
Disclosure of Invention
In order to solve the problems, the invention provides a square lithium battery negative pressure passage detection device, a detection system and a detection method, which have the advantages of simplicity in installation, simplicity in operation, convenience in detection and the like, and also have the advantage of capability of specifically detecting the air leakage condition of the negative pressure passage.
The invention relates to a square lithium battery negative pressure passage detection device, which is characterized by comprising the following components:
the fixing unit comprises an outer frame and a top cover, the outer frame has the same shape and size as the tray, and the outer frame is provided with a mounting cavity for mounting and supporting the negative pressure detection unit and the signal transmission unit; the top cover is arranged at an open top of the outer frame, two power supply copper bar through holes and a plurality of positioning holes are distributed in the top cover, and the power supply copper bar through holes are used for installing power supply copper bars;
the negative pressure detection unit comprises a tool valve pipe and a vacuum digital display meter, wherein the tool valve pipe is arranged in the mounting cavity of the outer frame, and the top end of the tool valve pipe is clamped in the positioning hole and is communicated with an external negative pressure suction nozzle; the vacuum digital display meter is embedded on the front panel of the outer frame and corresponds to the tool valve tubes one by one, and the connecting end of the vacuum digital display meter is communicated with the bottom end of the tool valve tube and used for detecting the vacuum degree of the negative tool valve tube in a vacuumizing state;
the signal transmission unit comprises a router and a pair of power supply copper bars, the power supply copper bars are respectively embedded in the outer frame, the upper ends of the power supply copper bars are inserted into the corresponding power supply copper bar through holes of the top cover, the top ends of the power supply copper bars as contact ends exceed the surface of the top cover and are used for being in contact connection with power supply probes of the motion mechanism assembly body, and the lower parts of the power supply copper bars are electrically connected with the power supply ends of the router and are used for supplying power to the router; the router is arranged at the bottom of the installation cavity, and a signal transmission end of the router is electrically connected with a signal transmission end of the vacuum digital display meter and used for transmitting a vacuum degree display value of the vacuum digital display meter to external processing equipment.
The outer frame is the same as the tray in overall dimension and is a square body with a cavity structure, a plurality of square hollow structures are distributed on the left panel and the right panel at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device, and the right panel is provided with at least one square hole for communication; the rear panel is provided with a plurality of square hollow structures distributed at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device.
The tool valve pipe is a negative pressure passage and is used for connecting the negative pressure suction nozzle with the vacuum digital display meter; the tool valve pipe comprises a tool valve pipe body, a negative pressure suction nozzle connecting end and a vacuum digital display meter connecting end, and the tool valve pipe body is arranged in an installation cavity of the outer frame; the connecting end of the negative pressure suction nozzle is positioned and extends out through the positioning hole of the top cover and is used for being in one-to-one corresponding contact with the negative pressure suction nozzle on the negative pressure assembly on the motion structure assembly body of the formation test equipment; the connecting end of the vacuum digital display meter is a straight-through connector and is connected with an air pipe, and then the air pipe is connected with the vacuum digital display meter.
The top cover is a rectangular plate which is fixedly arranged on the upper surface of the frame body structure, and two end parts of the top cover along the length direction are respectively provided with an electric copper bar through hole for embedding a power supply copper bar; the top cap is provided with two rows of square positioning holes along the length direction, the number of the positioning holes is 24, the positioning holes are divided into two rows, each row is 12, and the two rows of positioning holes are distributed on the top cap in parallel and are parallel to the left side and the right side of the top cap and used for positioning the tool valve pipe.
The tool valve pipes are vertically arranged in the installation cavity, the number of the tool valve pipes is 24, the tool valve pipes are divided into two rows, each row of the tool valve pipes is 12, the tool valve pipes in each row are vertically arranged and fixed in the outer frame, and the two rows of the tool valve pipes are parallel to each other and parallel to the left surface and the right surface of the outer frame.
The fixed unit further comprises a lower clamping plate, wherein two rows of square holes are formed in the lower clamping plate, each row of square holes is 12, the two rows of square holes are distributed in the lower clamping plate in parallel, are parallel to the left side and the right side of the lower clamping plate, correspond to the positioning holes of the top cover one by one, and are used for positioning and fixing the tool valve pipe together with the positioning holes of the top cover.
The number of the power supply copper bars is 2, the power supply copper bars are installed and fixed at the central line position of the top cover and are respectively close to the front side and the rear side of the top cover, each power supply copper bar comprises a power supply copper bar body and a power supply copper bar fixing plate, and the power supply copper bar fixing plates are positioned in the installation cavities of the outer frames through the lower clamping plates and used for supporting and installing the power supply copper bar bodies; the power supply copper bar body is fixed on the top of the power supply copper bar fixing plate, and the top of the power supply copper bar body extends out of the top cover from the power supply copper bar through hole to form a contact end which can be in contact connection with a power supply probe of the motion mechanism assembly body; the power supply copper bar body is electrically connected with the router and used for supplying power to the router.
The power supply copper bar body is of a structure in a shape like a Chinese character 'ji', and is fixedly arranged on the lower clamping plate of the outer frame through the power supply copper bar fixing plate; the protruding part of the power supply copper bar body extends out of the power supply copper bar through hole, and the two extending ends of the power supply copper bar body are clamped at the position of the power supply copper bar through hole, so that the power supply copper bar body is prevented from being separated from the power supply copper bar through hole.
The utility model provides a square lithium cell negative pressure passageway detecting system which characterized in that: the square lithium battery negative pressure passage detection device is arranged in the formation and partial capacity equipment and is positioned right below the moving part of the movement mechanism assembly body, and the negative pressure suction nozzles correspond to the tool valve pipes one by one, so that when the power supply probes are in contact connection with the power supply copper bars of the square lithium battery negative pressure passage detection device, the negative pressure suction nozzles are in contact connection with the corresponding tool valve pipes, and the negative pressure passage is exhausted to form a negative pressure environment.
The method for detecting the negative pressure passage by using the square lithium battery negative pressure passage detection system is characterized by comprising the following steps of:
1) placing the square lithium battery negative pressure passage detection device in a tray warehouse position of a motion mechanism assembly body of square lithium battery formation testing equipment;
2) the formation testing equipment is started, the motion mechanism assembly body can gradually descend, and when a negative pressure suction nozzle of a negative pressure assembly of the motion mechanism assembly body is in close contact with a connecting end of a negative pressure suction nozzle of a tool valve pipe, a negative pressure passage is communicated;
3) a power supply probe of the movement mechanism assembly body is connected with a power supply copper bar of the square lithium battery negative pressure passage detection device so as to supply power to the power supply copper bar and further supply power to the router;
4) when the instruction of vacuumizing the negative pressure passage is executed, the vacuum pump vacuumizes the negative pressure passage, and then the vacuum degree is displayed on the vacuum degree digital display meter;
5) the router transmits the vacuum degree signal to the computer end, and the vacuum degree condition is observed through external equipment so as to detect whether the negative pressure passage leaks air or not.
The invention has the beneficial effects that: the invention provides a square lithium battery negative pressure passage detection device which has the advantages of simple structure, simplicity in installation, simplicity in operation, quickness in detection and the like, and can specifically detect the air leakage condition of the negative pressure passage.
Drawings
FIG. 1 is a schematic diagram of a negative pressure path detection device for a square lithium battery;
FIG. 2 is a front view of a negative pressure path detection device for a square lithium battery;
FIG. 3 is a top view of a negative pressure path detection device for a square lithium battery;
FIG. 4 is a left side view of the negative pressure path detection device for a square lithium battery;
FIG. 5 is a cross-sectional view of a negative pressure path detection device for a square lithium battery;
FIG. 6 is a structural diagram of a tooling valve tube of a square lithium battery negative pressure passage detection device
FIG. 7 is a front view of a tooling valve tube of the square lithium battery negative pressure passage detection device;
FIG. 8 is a schematic diagram of a power supply copper bar body of a power supply copper bar of the negative pressure path detection device for a square lithium battery;
fig. 9 is a block diagram of a negative pressure passage detection system for a square lithium battery.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
With reference to the accompanying drawings:
embodiment 1 a negative pressure path detection device for a square lithium battery according to the present invention includes:
the fixing unit comprises an outer frame 1 and a top cover 2, the outer frame 1 has the same shape and size as the tray, and the outer frame is provided with a mounting cavity for mounting and supporting the negative pressure detection unit and the signal transmission unit; the top cover 2 is arranged at an open top of the outer frame, two power supply copper bar through holes and a plurality of positioning holes are distributed in the top cover, and the power supply copper bar through holes are used for installing power supply copper bars;
the negative pressure detection unit comprises a tool valve tube 3 and a vacuum digital display meter 5, wherein the tool valve tube 3 is arranged in the mounting cavity of the outer frame, and the top end of the tool valve tube 3 is clamped in the positioning hole and is communicated with an external negative pressure suction nozzle 12; the vacuum digital display meter 5 is embedded on the front panel of the outer frame 1 and corresponds to the tool valve pipes 3 one by one, and the connecting end of the vacuum digital display meter 5 is communicated with the bottom end of the tool valve pipe 3 and is used for detecting the vacuum degree of the negative tool valve pipe in a vacuumizing state;
the signal transmission unit comprises a router 6 and a pair of power supply copper bars 4, the power supply copper bars 4 are respectively embedded in the outer frame, the upper ends of the power supply copper bars 4 are inserted into corresponding power supply copper bar through holes of the top cover, the top ends of the power supply copper bars 4 serve as contact ends and exceed the surface of the top cover, the power supply copper bars are used for being in contact connection with power supply probes 13 of the motion mechanism assembly body 9, and the lower parts of the power supply copper bars 4 are electrically connected with the power supply end of the router 6 and used for supplying power to the router 6; the router 6 is arranged at the bottom of the installation cavity, and a signal transmission end of the router 6 is electrically connected with a signal transmission end of the vacuum digital display meter 5 and is used for transmitting a vacuum degree display value of the vacuum digital display meter 5 to external processing equipment.
The outer frame 1 is a square body with a cavity structure, the shape and size of the outer frame are the same as those of the tray, a plurality of square hollow structures are distributed on the left panel and the right panel at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device, and the right panel is provided with at least one square hole for communication; the rear panel is provided with a plurality of square hollow structures distributed at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device.
The tool valve pipe 3 is a negative pressure passage and is used for connecting a negative pressure suction nozzle and a vacuum digital display meter; the tool valve pipe comprises a tool valve pipe body 31, a negative pressure suction nozzle connecting end 32 and a vacuum digital display meter connecting end 33, and the tool valve pipe body is arranged in an installation cavity of the outer frame; the connecting end of the negative pressure suction nozzle is positioned and extends out through the positioning hole of the top cover and is used for being in one-to-one corresponding contact with the negative pressure suction nozzle on the negative pressure assembly on the motion structure assembly body of the formation test equipment; the connecting end of the vacuum digital display meter is a straight-through connector and is connected with an air pipe, and then the air pipe is connected with the vacuum digital display meter.
The top cover 2 is a rectangular plate which is fixedly arranged on the upper surface of the frame body structure, and two end parts of the top cover along the length direction are respectively provided with an electric copper bar through hole for embedding a power supply copper bar; the top cap is provided with two rows of square positioning holes along the length direction, the number of the positioning holes is 24, the positioning holes are divided into two rows, each row is 12, and the two rows of positioning holes are distributed on the top cap in parallel and are parallel to the left side and the right side of the top cap and used for positioning the tool valve pipe.
The tool valve pipes 3 are vertically arranged in the installation cavity, the number of the tool valve pipes is 24, the tool valve pipes are divided into two rows of 12, each row of the tool valve pipes is vertically arranged and fixed in the outer frame, and the two rows of the tool valve pipes are parallel to each other and parallel to the left surface and the right surface of the outer frame.
The fixing unit further comprises a lower clamping plate 7, two rows of square holes are formed in the lower clamping plate, each row is 12, the two rows of square holes are distributed in the lower clamping plate in parallel, are parallel to the left side and the right side of the lower clamping plate and correspond to the positioning holes of the top cover one by one, and the positioning holes of the top cover are jointly used for positioning and fixing the tool valve pipe.
The number of the power supply copper bars is 2, the power supply copper bars are installed and fixed at the central line position of the top cover and are respectively close to the front side and the rear side of the top cover, the power supply copper bars 4 comprise power supply copper bar bodies 41 and power supply copper bar fixing plates 42, and the power supply copper bar fixing plates are positioned in the installation cavity of the outer frame through the lower clamping plates and are used for supporting and installing the power supply copper bar bodies; the power supply copper bar body is fixed on the top of the power supply copper bar fixing plate, and the top of the power supply copper bar body extends out of the top cover from the power supply copper bar through hole to form a contact end which can be in contact connection with a power supply probe of the motion mechanism assembly body; the power supply copper bar body is electrically connected with the router and used for supplying power to the router.
The power supply copper bar body 41 is of a structure in a shape like a Chinese character 'ji', and is arranged and fixed on the lower clamping plate 7 of the outer frame through the power supply copper bar fixing plate; the protruding part of the power supply copper bar body extends out of the power supply copper bar through hole, and the two extending ends of the power supply copper bar body are clamped at the position of the power supply copper bar through hole, so that the power supply copper bar body is prevented from being separated from the power supply copper bar through hole.
Embodiment 2 a negative pressure path detection device for a square lithium battery according to the present invention includes:
the fixing unit comprises an outer frame 1 and a top cover 2, wherein the outer frame 1 is a basic supporting component of the square lithium battery negative pressure passage detection device 10 and is used for installing and supporting other components of the negative pressure passage detection device, and the shape and size of the outer frame are the same as those of the tray; the outer frame 1 is a square body with a cavity structure, three square hollow structures are distributed on a left panel and a right panel at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device 10, and the right panel is also provided with 2 square holes for communication; a vacuum digital display meter 5 is arranged on the front panel; the rear panel is provided with 2 square hollow structures distributed at equal intervals and is also used for reducing the weight of the square lithium battery negative pressure passage detection device 10; the upper panel is a top cover 2, and a router 6 and a lower clamping plate 7 are arranged in the outer frame 1; and the top cover 2 is an upper panel of the outer frame 1 and is used for positioning the tool valve pipe 3. The top cover 2 is provided with a positioning hole and a square hole structure, and the square hole structure is used for positioning the tool valve pipe 3. The square hole structures are 24 and divided into two groups, each group is 12, and two rows of square hole structures are distributed on the top cover 2 in parallel and are parallel to the left side and the right side of the top cover 2. The top cover 2 is also provided with a power supply copper bar through hole for mounting a power supply copper bar 4;
the negative pressure detection unit comprises a tool valve pipe 3 and a vacuum digital display meter 5, wherein the tool valve pipe 3 is a negative pressure passage and is used for connecting the negative pressure suction nozzle 12 with the vacuum digital display meter 5; the tool valve pipe 3 comprises a tool valve pipe body 31, a negative pressure suction nozzle connecting end 32 and a vacuum digital display meter connecting end 33. The tool valve pipe body 31 is of a hollow square structure and is positioned in the outer frame 1 through the lower clamping plate 7. One end of the tool valve pipe body 31 is a negative pressure suction nozzle connecting end 32. The negative pressure suction nozzle connecting end 32 is positioned and extended through the square hole structure of the top cover 2, and is in one-to-one corresponding contact with the negative pressure suction nozzles 12 on the negative pressure component 11 on the movement structure assembly body 9 of the formation test equipment 8. The connecting end 33 of the vacuum digital display meter is a straight-through connector and is connected with an air pipe, and then the air pipe is connected with the vacuum digital display meter 5. 24 tool valve pipes are divided into two groups, each group comprises 12 tool valve pipes, each row of tool valve pipes 3 is vertically arranged and fixed in the outer frame 1, and the two rows of tool valve pipes 5 are parallel to each other and are parallel to the left surface and the right surface of the outer frame 1; the vacuum digital display meter 5 is used for displaying the vacuum degree of the negative pressure passage in a vacuumizing state and is connected with the vacuum digital display meter connecting end 33 of the tool valve pipe 3 through an air pipe;
and the signal transmission unit comprises a router 6 and a pair of power supply copper bars 4, wherein 2 power supply copper bars 4 are of a structure shaped like a Chinese character 'ji', are fixedly arranged at the central line position of the top cover 2 through two sides of the structure shaped like a Chinese character 'ji', and are respectively close to the front side and the rear side of the top cover 2. The protruding portion of the power supply copper bar 4 is used for making electrical connection with the power supply probe 13. When the power supply probe 13 of the movement mechanism assembly body 9 of the formation test equipment 8 supplies power to the power supply copper bar 4, the power supply copper bar further supplies power to the square lithium battery security detection device 10, and particularly supplies power to the router 6; the router 6 is electrically connected with the vacuum digital display meter 5 and the power supply copper bar 4 and is used for transmitting a vacuum degree display value of the vacuum digital display meter 5 to the computer end, reading the vacuum degree value by the computer end and further judging the vacuum condition of the negative pressure passage.
The lower clamping plate 7 is positioned in the middle of the outer frame 1 and is parallel to the top cover 2, and a square hole structure is arranged on the lower clamping plate 7. The square hole structures are 24 and divided into two groups, each group is 12, two rows of square hole structures are distributed on the lower clamping plate 7 in parallel, are parallel to the left side and the right side of the lower clamping plate 7, correspond to the square hole structures of the top cover 2 one by one, and are used for positioning and fixing the tool valve pipe 3 together with the square hole structures of the top cover 2.
The tool valve pipe body 31 is a square pipe, a negative pressure passage is axially arranged on the square pipe, the upper end of the negative pressure passage is provided with a negative pressure suction nozzle connecting end 32 which is used for being communicated with a negative pressure suction nozzle, the lower end of the negative pressure passage is communicated with an air outlet connecting end 33 of a vacuum digital display meter embedded on the pipe wall of the tool valve pipe body 31, and the connecting end of the vacuum digital display meter connecting end 33 is communicated with the connecting end of the vacuum digital display meter.
Example 3 this example differs from example 1 in that: as shown in fig. 1-5, the square lithium battery negative pressure passage detection device comprises an outer frame 1, a top cover 2, a tool valve pipe 3, a power supply copper bar 4, a vacuum digital display meter 5, a router 6 and a lower clamping plate 7.
The top cover 2 is an upper panel of the outer frame 1 and is provided with a square hole structure. The square hole structures are 24 and divided into two groups, each group is 12, and two rows of square hole structures are distributed on the top cover 2 in parallel and are parallel to the left side and the right side of the top cover 2. And the top cover 2 is also provided with a power supply copper bar 4.
The number of the tool valve pipes is 24, the tool valve pipes are divided into two groups, each group is 12, each row of tool valve pipes 3 are vertically installed and fixed in the outer frame 1, and the two rows of tool valve pipes 5 are parallel to each other and parallel to the left surface and the right surface of the outer frame 1.
The power supply copper bars 4 are 2 and are of a convex structure, and are fixedly arranged at the central line position of the top cover 2 through two sides of the convex structure and are respectively close to the front side and the rear side of the top cover 2.
The lower clamping plate 7 is positioned in the middle of the outer frame 1 and is parallel to the top cover 2, and a square hole structure is arranged on the lower clamping plate 7. The square hole structures are 24 and divided into two groups, each group is 12, and two rows of square hole structures are distributed on the lower clamping plate 7 in parallel, are parallel to the left side and the right side of the lower clamping plate 7 and are in one-to-one correspondence with the square hole structures of the top cover 2.
As shown in fig. 6 to 7, the tool valve tube 3 includes a tool valve tube body 31, a negative pressure suction nozzle connecting end 32, and a vacuum digital display meter connecting end 33. The tool valve pipe body 31 is of a hollow square structure and is positioned in the outer frame 1 through the lower clamping plate 7. One end of the tool valve pipe body 31 is a negative pressure suction nozzle connecting end 32. The negative pressure suction nozzle connecting end 32 is positioned and extended through the square hole structure of the top cover 2.
1) placing a square lithium battery negative pressure passage detection device 10 in a tray warehouse position of a motion mechanism assembly body 9 of square lithium battery formation testing equipment 8;
2) when the formation testing equipment 8 is started, the movement mechanism assembly body 9 gradually descends, and when the negative pressure suction nozzle 12 of the negative pressure component 11 of the movement mechanism assembly body 9 is in close contact with the negative pressure suction nozzle connecting end 32 of the tooling valve pipe 3, the negative pressure passage is communicated;
3) at this time, the power supply probe 13 of the movement mechanism assembly body 9 is connected with the power supply copper bar 4 of the square lithium battery negative pressure passage detection device 10 to supply power to the power supply copper bar 4, and further supply power to the router 6;
4) when the instruction of vacuumizing the negative pressure passage is executed, the vacuum pump vacuumizes the pressure-generating passage, and then the vacuum degree starts to be displayed on the vacuum degree digital display meter 5;
5) then, the router 6 transmits the vacuum degree signal to the external equipment, and the computer end observes the vacuum degree condition to detect whether the negative pressure channel leaks air or not.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but includes equivalent technical means as would be recognized by those skilled in the art based on the inventive concept.
Claims (10)
1. Square lithium cell negative pressure route detection device, its characterized in that includes:
the fixing unit comprises an outer frame and a top cover, the outer frame has the same shape and size as the tray, and the outer frame is provided with a mounting cavity for mounting and supporting the negative pressure detection unit and the signal transmission unit; the top cover is arranged at an open top of the outer frame, two power supply copper bar through holes and a plurality of positioning holes are distributed in the top cover, and the power supply copper bar through holes are used for installing power supply copper bars;
the negative pressure detection unit comprises a tool valve pipe and a vacuum digital display meter, wherein the tool valve pipe is arranged in the mounting cavity of the outer frame, and the top end of the tool valve pipe is clamped in the positioning hole and is communicated with an external negative pressure suction nozzle; the vacuum digital display meter is embedded on the front panel of the outer frame and corresponds to the tool valve tubes one by one, and the connecting end of the vacuum digital display meter is communicated with the bottom end of the tool valve tube and used for detecting the vacuum degree of the negative tool valve tube in a vacuumizing state;
the signal transmission unit comprises a router and a pair of power supply copper bars, the power supply copper bars are respectively embedded in the outer frame, the upper ends of the power supply copper bars are inserted into the corresponding power supply copper bar through holes of the top cover, the top ends of the power supply copper bars as contact ends exceed the surface of the top cover and are used for being in contact connection with power supply probes of the motion mechanism assembly body, and the lower parts of the power supply copper bars are electrically connected with the power supply ends of the router and are used for supplying power to the router; the router is arranged at the bottom of the installation cavity, and a signal transmission end of the router is electrically connected with a signal transmission end of the vacuum digital display meter and used for transmitting a vacuum degree display value of the vacuum digital display meter to external processing equipment.
2. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 1, wherein: the outer frame is the same as the tray in overall dimension and is a square body with a cavity structure, a plurality of square hollow structures are distributed on the left panel and the right panel at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device, and the right panel is provided with at least one square hole for communication; the rear panel is provided with a plurality of square hollow structures distributed at equal intervals and used for reducing the weight of the square lithium battery negative pressure passage detection device.
3. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 1, wherein: the tool valve pipe is a negative pressure passage and is used for connecting the negative pressure suction nozzle with the vacuum digital display meter; the tool valve pipe comprises a tool valve pipe body, a negative pressure suction nozzle connecting end and a vacuum digital display meter connecting end, and the tool valve pipe body is arranged in an installation cavity of the outer frame; the connecting end of the negative pressure suction nozzle is positioned and extends out through the positioning hole of the top cover and is used for being in one-to-one corresponding contact with the negative pressure suction nozzle on the negative pressure assembly on the motion structure assembly body of the formation test equipment; the connecting end of the vacuum digital display meter is a straight-through connector and is connected with an air pipe, and then the air pipe is connected with the vacuum digital display meter.
4. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 3, wherein: the top cover is a rectangular plate which is fixedly arranged on the upper surface of the frame body structure, and two end parts of the top cover along the length direction are respectively provided with an electric copper bar through hole for embedding a power supply copper bar; the top cap is provided with two rows of square positioning holes along the length direction, the number of the positioning holes is 24, the positioning holes are divided into two rows, each row is 12, and the two rows of positioning holes are distributed on the top cap in parallel and are parallel to the left side and the right side of the top cap and used for positioning the tool valve pipe.
5. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 4, wherein: the tool valve pipes are vertically arranged in the installation cavity, the number of the tool valve pipes is 24, the tool valve pipes are divided into two rows, each row of the tool valve pipes is 12, the tool valve pipes in each row are vertically arranged and fixed in the outer frame, and the two rows of the tool valve pipes are parallel to each other and parallel to the left surface and the right surface of the outer frame.
6. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 5, wherein: the fixed unit further comprises a lower clamping plate, wherein two rows of square holes are formed in the lower clamping plate, each row of square holes is 12, the two rows of square holes are distributed in the lower clamping plate in parallel, are parallel to the left side and the right side of the lower clamping plate, correspond to the positioning holes of the top cover one by one, and are used for positioning and fixing the tool valve pipe together with the positioning holes of the top cover.
7. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 1, wherein: the number of the power supply copper bars is 2, the power supply copper bars are installed and fixed at the central line position of the top cover and are respectively close to the front side and the rear side of the top cover, each power supply copper bar comprises a power supply copper bar body and a power supply copper bar fixing plate, and the power supply copper bar fixing plates are positioned in the installation cavities of the outer frames through the lower clamping plates and used for supporting and installing the power supply copper bar bodies; the power supply copper bar body is fixed on the top of the power supply copper bar fixing plate, and the top of the power supply copper bar body extends out of the top cover from the power supply copper bar through hole to form a contact end which can be in contact connection with a power supply probe of the motion mechanism assembly body; the power supply copper bar body is electrically connected with the router and used for supplying power to the router.
8. The apparatus for detecting the negative pressure path of a lithium square battery as claimed in claim 7, wherein: the power supply copper bar body is of a structure in a shape like a Chinese character 'ji', and is fixedly arranged on the lower clamping plate of the outer frame through the power supply copper bar fixing plate; the protruding part of the power supply copper bar body extends out of the power supply copper bar through hole, and the two extending ends of the power supply copper bar body are clamped at the position of the power supply copper bar through hole, so that the power supply copper bar body is prevented from being separated from the power supply copper bar through hole.
9. The utility model provides a square lithium cell negative pressure passageway detecting system which characterized in that: the square lithium battery negative pressure passage detection device comprises formation and partial volume equipment and the square lithium battery negative pressure passage detection device as claimed in any one of claims 1 to 8, wherein a motor mechanism assembly body is suspended at the top of the formation and partial volume equipment, a power supply probe capable of being in contact connection with a power supply copper bar and a negative pressure assembly with a negative pressure suction nozzle are assembled at the motion part of the motor mechanism assembly body, the square lithium battery negative pressure passage detection device is installed in the formation and partial volume equipment and is positioned right below the motion part of the motor mechanism assembly body, the negative pressure suction nozzle is in one-to-one correspondence with a tooling valve pipe, and when the power supply probe is in contact connection with the power supply copper bar of the square lithium battery negative pressure passage detection device, the negative pressure suction nozzle is in contact connection with the corresponding tooling valve pipe so as to perform air.
10. The method for detecting the negative pressure passage by using the system for detecting the negative pressure passage of the square lithium battery as claimed in claim 9, comprising the steps of:
1) placing the square lithium battery negative pressure passage detection device in a tray warehouse position of a motion mechanism assembly body of square lithium battery formation testing equipment;
2) the formation testing equipment is started, the motion mechanism assembly body can gradually descend, and when a negative pressure suction nozzle of a negative pressure assembly of the motion mechanism assembly body is in close contact with a connecting end of a negative pressure suction nozzle of a tool valve pipe, a negative pressure passage is communicated;
3) a power supply probe of the movement mechanism assembly body is connected with a power supply copper bar of the square lithium battery negative pressure passage detection device so as to supply power to the power supply copper bar and further supply power to the router;
4) when the instruction of vacuumizing the negative pressure passage is executed, the vacuum pump vacuumizes the negative pressure passage, and then the vacuum degree is displayed on the vacuum degree digital display meter;
5) the router transmits the vacuum degree signal to external equipment, and the external equipment is used for observing the vacuum degree condition so as to detect whether the negative pressure passage leaks air or not.
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| CN202010135341.5A CN111504566A (en) | 2020-03-02 | 2020-03-02 | Square lithium battery negative pressure passage detection device, detection system and detection method |
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| CN202010135341.5A CN111504566A (en) | 2020-03-02 | 2020-03-02 | Square lithium battery negative pressure passage detection device, detection system and detection method |
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