CN114755540A - Withstand voltage detection frock of electricity core utmost point group - Google Patents
Withstand voltage detection frock of electricity core utmost point group Download PDFInfo
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- CN114755540A CN114755540A CN202210357726.5A CN202210357726A CN114755540A CN 114755540 A CN114755540 A CN 114755540A CN 202210357726 A CN202210357726 A CN 202210357726A CN 114755540 A CN114755540 A CN 114755540A
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- conductive cloth
- pole
- pole group
- plate
- battery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
Abstract
The invention discloses a withstand voltage detection tool for a battery cell pole group, which comprises a lower pressing plate which is horizontally distributed; a vertical supporting frame is arranged on the rear side of the top of the lower pressing plate; a linear cylinder mounting plate is arranged at the top of the vertical support frame; a linear cylinder is arranged on the linear cylinder mounting plate; the output end of the lower side of the linear cylinder is fixedly connected with the top of the upper pressure plate; the bottom surface of the upper pressing plate is provided with first conductive cloth; the lower pressing plate is provided with second conductive cloth; the top surface of the second conductive cloth is used for placing a pole group package to be detected; the first conductive cloth and the second conductive cloth are connected with a positive electrode test point on the insulation tester; the lower pressing plate is provided with a short circuit test probe; one end of the short circuit test probe is used for contacting a positive pole or a negative pole on the battery cover plate, and the other end of the short circuit test probe is used for being connected with a negative pole test point on the insulation tester. The invention can find the hidden trouble of internal short circuit caused by foreign matters in advance when foreign matters exist between the pole piece (such as a negative pole) of the pole group and the battery shell.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a withstand voltage detection tool for a battery core electrode group.
Background
The lithium ion battery has the advantages of high specific energy, more recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital video cameras and portable computers), and is also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirement on the lithium ion battery is higher and higher.
In recent years, power battery safety accidents frequently occur, battery spontaneous combustion still serves as the largest source of electric automobile ignition events, and the root cause of battery spontaneous combustion is internal short circuit of the battery. If metal impurities are mixed in the battery pole piece during processing and preparation or pole piece burrs are generated in the assembling process and particle foreign matters are introduced, the pole piece expands to cause the stress of the foreign matters to increase in the using process of the battery, the battery diaphragm can be scratched in use to cause internal short circuit of the battery, and after heat generated by the internal short circuit of the battery is accumulated to a certain degree, thermal runaway of the battery can be caused, so that the power battery is on fire.
In order to identify and screen the risk of short circuit inside the battery caused by burrs and foreign matters in advance, a high-risk internal short circuit cell is screened by a high-voltage withstand test (Hi-pot) method in the industry.
A withstand voltage test (i.e., Hi-pot) is a voltage applied between mutually insulated portions for a certain period of time, and if the insulation therebetween is sufficiently good, the applied voltage causes only a small leakage current; on the other hand, if the insulating layer is defective, the leakage current exceeds the predetermined range, and the failure can be determined.
At present, the general short circuit detection method in the existing lithium battery industry is as follows: after the periphery of the pole group entering shell is welded, applying short-circuit test voltage between the anode and the cathode, and applying certain pressure to identify the insulating property of the diaphragm; after the pole group is placed into the shell, short-circuit test voltage is applied between the positive pole and the shell, and between the negative pole and the shell, so that the insulation performance of the pole group and the shell is identified.
Because the lithium battery has positive and negative electrode expansion in the using process, the packaging ratio of the finished product battery is less than 92% after the lithium battery is placed into the shell, namely, a millimeter-sized gap exists between the outermost pole piece of the pole group and the battery shell after the pole group is placed into the shell, and in addition, a layer of PP (polypropylene) insulating film with the thickness of 0.1mm can be wrapped outside the pole group (package) before the pole group is placed into the shell. Therefore, when the electrode assembly is installed in the battery case and then the short circuit test between the positive electrode and the negative electrode of the electrode assembly and the case is performed, because a gap of millimeter level exists between the pole piece and the case and 0.1mm of PP insulation film exists, when the particle size foreign matter damaging the insulation film exists, the detection result of the existing detection means on the insulation performance between the electrode assembly and the battery case is usually qualified, namely, the insulation performance between the electrode assembly and the battery case cannot be accurately detected when the particle size foreign matter damaging the insulation material film exists.
Disclosure of Invention
The invention aims to provide a withstand voltage detection tool for a battery cell pole group, aiming at the technical defects in the prior art.
Therefore, the invention provides a withstand voltage detection tool for a battery cell pole group, which comprises lower pressing plates which are horizontally distributed;
a vertical supporting frame is arranged on the rear side of the top of the lower pressing plate;
a linear cylinder mounting plate horizontally protruding forwards is arranged at the top of the vertical support frame;
a linear cylinder is arranged on the linear cylinder mounting plate;
the output end at the lower side of the linear cylinder penetrates through a through hole reserved on the linear cylinder mounting plate and then is fixedly connected with the top of the upper pressure plate;
the bottom surface of the upper pressing plate is provided with first conductive cloth;
the lower pressing plate is provided with second conductive cloth at a position right below the first conductive cloth;
the top surface of the second conductive cloth is used for placing the electrode group package to be detected;
the pole group assembly comprises a pole group and a battery cover plate;
the positive tab and the negative tab of the electrode group are respectively connected with the positive pole column and the negative pole column on the battery cover plate;
the first conductive cloth and the second conductive cloth are connected with a positive electrode test point on the insulation tester through a lead;
the lower pressing plate is arranged at the right side position right behind the second conductive cloth and is provided with a short circuit test probe;
One end of the short circuit test probe is used for contacting the positive pole or the negative pole on the battery cover plate;
and the other end of the short circuit test probe is used for being connected with a negative electrode test point on the insulation tester through a lead.
Preferably, the short circuit test probe is arranged at the front center position of one vertically distributed probe mounting plate;
the rear side of the probe mounting plate is connected with an output end on the front side of a driving cylinder.
Preferably, the linear cylinder mounting plate is provided with a pair of first guide rods respectively penetrating through the left side and the right side of the linear cylinder;
the top of each pair of first guide rods is connected with the front end and the rear end of a first guide rod connecting block which is longitudinally distributed;
the bottom of each pair of first guide rods is fixedly connected with the upper pressure plate.
Preferably, the left end and the right end of the top of the upper pressure plate are respectively provided with a second guide rod fixing block;
the linear cylinder mounting plate is vertically provided with a second guide rod in a penetrating manner at the longitudinal middle position of each pair of first guide rods;
the lower end of the second guide rod is fixedly connected with the middle part of the second guide rod fixing block.
Preferably, the pressing plate is provided with a battery cover plate fixing block on the left side and the right side right behind the second conductive cloth;
And the front side of the gap between the two battery cover plate fixing blocks is used for placing the battery cover plates which are transversely distributed.
Preferably, the lower pressing plate is arranged right behind the second conductive cloth and is further provided with a first proximity sensor;
a second proximity sensor is arranged on the front side of the vertical support frame;
and the second proximity sensor is positioned right above the upper pressure plate.
Compared with the prior art, the technical scheme provided by the invention has the advantages that the withstand voltage detection tool for the battery cell pole group is scientific in design, and when foreign matters exist between a pole piece (such as a negative pole) of the pole group and a battery shell, the hidden danger of internal short circuit caused by the fact that the foreign matters scratch a diaphragm between the positive pole and the negative pole or scratch an insulating layer (namely an insulating film) between the pole piece and the battery shell due to the fact that the stress of the foreign matters is increased due to expansion of the pole piece in the use process of the battery cell can be found in advance, and the practical significance is great.
Drawings
Fig. 1 is a schematic diagram of a voltage withstanding detection tool for a battery cell electrode group, provided by the invention;
fig. 2 is a schematic structural diagram of the withstand voltage detection tool for the battery cell pole group, provided by the invention, when the upper pressing plate is removed;
fig. 3 is a schematic structural diagram of a cell pole group voltage withstanding detection tool provided by the present invention, in which a pole group is placed;
Fig. 4 is a first structural schematic diagram of the withstand voltage test tool for a battery cell pole group, provided by the invention, when an inserted pole group package is extruded;
fig. 5 is a structural schematic diagram of a voltage withstanding detection tool for a battery cell pole group, according to the present invention, when an inserted pole group package is subjected to an extrusion operation;
fig. 6 is a schematic diagram of a state in which a polyester film is wrapped after a test operation of a pole group pack is completed in the withstand voltage test tool for a battery cell pole group provided by the present invention;
in the figure, 1 is a fixed seat, 2 is a lower pressing plate, 3 is conductive cloth, 4 is a first proximity sensor, and 5 is a battery cover plate fixed block;
6 is an upper pressure plate, 7 is a linear cylinder 8 which is a short circuit test probe, 9 is a second proximity sensor 10 which is an insulation tester;
11 is a pole group bag, 12 is a polyester film.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 6, the invention provides a voltage withstanding detection tool for a battery cell pole group, which comprises a lower pressing plate which is horizontally distributed;
a vertical supporting frame 100 is arranged at the rear side of the top of the lower pressing plate 2;
a linear cylinder mounting plate 101 horizontally protruding forwards is arranged at the top of the vertical support frame 100;
a linear cylinder 7 is arranged on the linear cylinder mounting plate 101;
the output end (such as a piston rod) at the lower side of the linear cylinder 7 penetrates through a through hole reserved on the linear cylinder mounting plate 101 and then is fixedly connected with the top of the upper pressing plate 6;
the bottom surface of the upper press plate 6 is provided with (for example, adhered with) a first conductive cloth 31;
the lower press plate 2 is provided with a second conductive cloth 32 at a position right below the first conductive cloth 31;
the top surface of the second conductive cloth 32 is used for placing the pole group bag 11 to be detected;
a pole group assembly 11 including a pole group 111 and a battery cover plate 112;
the positive tab and the negative tab of the electrode group are respectively connected with the positive pole column and the negative pole column on the battery cover plate (for example, connected by welding);
the first conductive cloth 31 and the second conductive cloth 32 are connected with the positive electrode test point a on the insulation tester 10 through a conducting wire;
The lower pressing plate 2 is provided with a short circuit test probe 8 at the right side position right behind the second conductive cloth 32;
one end of the short circuit test probe 8 is used for contacting the positive pole or the negative pole on the battery cover plate;
and the other end of the short circuit test probe 8 is used for being connected with a negative electrode test point B on the insulation tester 10 through a lead.
In the present invention, in a specific implementation, the short circuit test probe 8 is disposed at a front center position of a vertically distributed probe mounting plate 81;
the rear side of the probe mounting plate 81 is connected to an output (e.g., a piston rod) on the front side of a drive cylinder 82 (specifically, a small linear cylinder).
In the invention, in a specific implementation, the linear cylinder mounting plate 101 is respectively provided with a pair of first guide rods 102 penetrating through the left side and the right side of the linear cylinder 7;
the top of each pair of first guide rods 102 is connected with the front end and the rear end of a first guide rod connecting block 103 which is longitudinally distributed;
the bottom of each pair of first guide rods 102 is fixedly connected with the upper press plate 6.
In the concrete implementation, the left end and the right end of the top of the upper pressure plate 6 are respectively provided with a second guide rod fixing block 104;
the linear cylinder mounting plate 101 is vertically provided with a second guide rod 105 in a penetrating manner at the longitudinal middle position of each pair of first guide rods 102;
The lower end of the second guide rod 105 is fixedly connected with the middle part of the second guide rod fixing block 104.
In concrete implementation, a through hole is formed in the middle of the first guide rod connecting block 103 at a position corresponding to the top of the second guide rod 105, and is used for allowing the second guide rod 105 to pass through when the second guide rod is lifted.
In the present invention, in a specific implementation, the lower pressing plate 2 is provided with a battery cover plate fixing block 5 (an insulating fixing block) on each of the left and right sides right behind the second conductive cloth 32;
and the front side of the gap between the two battery cover plate fixing blocks 5 is used for placing the battery cover plates which are transversely distributed.
It should be noted that the battery cover plate is placed at the front side of the gap between the two battery cover plate fixing blocks 5, that is, the battery cover plate is only clamped by the front side ends of the opposite sides of the two battery cover plate fixing blocks 5.
In the invention, in a concrete implementation, the lower pressing plate 2 is arranged right behind the second conductive cloth 32, and the first proximity sensor 4 is further arranged for detecting whether the top of the second conductive cloth 32 places the electrode group package 11 at a preset position (specifically, detecting a distance between the top of the second conductive cloth 32 and a battery cover plate of the electrode group package 11 in real time, judging whether the top of the second conductive cloth 32 places the electrode group package 11 at the preset position according to whether the distance detected by the sensor is smaller than a distance when the preset electrode group package is placed in a qualified state), and if so, sending a trigger driving signal to the linear cylinder 7 (specifically sending the trigger driving signal to an electromagnetic valve of the linear cylinder) to drive the linear cylinder 7 to work, so that the linear cylinder 7 pushes the upper pressing plate 6 to move downwards.
In the present invention, in a specific implementation, a second proximity sensor 9 is disposed at the front side of the vertical supporting frame 100;
the second proximity sensor 9 is located right above the upper platen 6, and is configured to detect a distance between the second proximity sensor 9 and the top of the upper platen 6 in real time when the linear air cylinder 7 pushes the upper platen 6 to move downward, and when the distance is equal to a preset test distance (the preset test distance is set according to test requirements, but a fixed distance between the second proximity sensor 9 and the top surface of the lower platen 2 is required, the sum of the distance between the second proximity sensor 9 and the top surface of the upper platen 6 and the thickness of the upper platen 6 is subtracted, and an obtained difference is smaller than the thickness of the pole group in the pole group package 11, for example, smaller by 0.1mm, so that a downward extrusion force is formed by the upper platen 6 on the pole group), send a stop control signal to the linear air cylinder 7, and control the linear air cylinder 7 to stop working, that is to stop pushing the upper platen 6 to move downward.
In the present invention, the bottom of the lower pressing plate 2 is connected to the top of the fixing base 1.
In the present invention, it should be noted that the insulation tester 10 is well known in the art, and for example, a lithium battery insulation pulse detector manufactured by the witek intelligent instruments limited company may be used, which is a long time available model DET-5000. The insulation tester 10 is used for detecting the short circuit condition of the outermost layer diaphragm after the pole group is pressed through the penetration.
In order to more clearly understand the technical solution of the present invention, the following description is given with reference to a specific embodiment to illustrate the operation process and working principle of the present invention.
Examples are given.
Firstly, a pole group package 11, which is formed by welding a pole lug of a pole group and a pole column of a battery cover, is placed on the second conductive cloth 32 of the lower pressing plate 2 (the pole group package 11 can be grabbed and then placed on the tool of the invention by the existing manipulator);
then, fixing the position of the battery cover plate by using two battery cover plate fixing blocks 5 so as to fix the pole group package 11;
then, the first proximity sensor 4 receives the detection signal, triggers and opens the cylinder solenoid valve of the linear cylinder 7, and utilizes the linear cylinder 7 to make the upper press plate 6 slide downwards to reach the position shown in fig. 4, at this time, the pole group of the pole group package 11 is clamped between the lower press plate 2 and the upper press plate 6 according to the pole group stress of the process requirement;
then, when the upper platen 6 and the pole group package 11 reach the positions shown in fig. 4, the second proximity sensor 9 receives the detection signal, the second proximity sensor 9 sends a trigger signal to the driving cylinder 82, the short circuit test probe 8 is driven by the driving cylinder 82 to abut against the negative pole of the battery cover plate in the pole group package 11 (it should be noted that, according to the selection of the customer, when the pole group package is placed in an inverted manner, the short circuit test probe 8 may also abut against the positive pole of the battery cover plate in the pole group package 11), the insulation tester 10 is started, and the short circuit test is started.
Because the conductive cloth is adhered to one side of the lower pressing plate 2 and one side of the upper pressing plate 6 facing the pole group, the two pieces of conductive cloth (the first conductive cloth 31 and the second conductive cloth 32) are connected to the positive pole test point A of the insulation tester 10, the short circuit test probe 8 is connected with the negative pole test point B of the insulation tester 10, when the short circuit test probe 8 is in contact with the negative pole column of the battery cover plate of the pole group package 11, the insulation condition between the negative pole of the pole group and the two pieces of conductive cloth can be measured under the condition that the bare pole group (i.e. the pole group without the insulation film) is subjected to pressure, namely the insulation performance between the outermost negative pole of the pole group and the battery shell into which the pole group is to be installed is obtained through simulation measurement.
After the insulation test, the pole group package 11 is extracted (the pole group package can be grabbed and removed from the tool of the present invention by an existing manipulator), and at this time, polyester films 12(Mylar films) can be wrapped on the upper and lower side surfaces (i.e., the large surfaces) of the pole group 111 of the pole group package 11, so as to wrap the bare pole group, and form the outer insulation protection for the pole group package 11.
Based on the above operations, the present invention can seamlessly join and test the insulation condition of one electrode assembly 11 under a predetermined pressure state before entering the shell, and can ensure the insulation performance of the battery cell in the cyclic expansion process throughout the life, so as to ensure the safety of the vehicle.
It should be noted that, with respect to the present invention, before the battery core is coated into the case, the insulation characteristic of the outermost layer of the electrode group package can be detected, and the detection method is as follows: high voltage is applied between the negative electrode of the electrode group (the negative pole column of the battery cover welded with the negative electrode of the electrode group is used as a test point in the above embodiment) and the tested shell (the grounded conductive cloth pressed and contacted with the electrode group is used as the shell in the embodiment), and the specified required pressure is applied through the air cylinder during the high voltage test, so that if the insulation test between the negative electrode and the tested shell passes, no foreign matter or insulation layer is considered to be damaged. If the outermost diaphragm of the tested negative electrode is damaged by pinholes and the like, the insulation test fails; or the electrical gap between the negative electrode and the shell is too small or the insulator membrane is extruded and broken due to the existence of foreign matters on the outermost layer of the negative electrode, the insulation test fails. Therefore, when foreign matters exist between the pole pieces (such as the negative pole) of the pole group and the battery shell, the hidden danger of internal short circuit caused by the fact that the foreign matters scratch the diaphragm between the positive pole and the negative pole or scratch the insulating layer (namely the insulating film) between the pole pieces and the battery shell due to the fact that the stress of the foreign matters is increased caused by the expansion of the pole pieces in the using process of the battery cell can be found in advance.
The application of the invention can obviously improve the capability of finding foreign matters between the pole piece (such as a negative pole) of the pole group and the battery shell.
Compared with the prior art, the withstand voltage detection tool for the battery cell pole group provided by the invention has the following beneficial effects:
1. the invention firstly proposes to add the detection of the insulation characteristic of the outermost layer of the pole group (pack) before the battery is placed into the shell,
2. the invention uses the conductive cloth to replace the shell of the battery to be tested, can play a role in conducting electricity and avoid physical damage to the outer layer of the electrode group,
3. when the invention is used for testing, a certain pressure is applied to the battery cell through the air cylinder or the servo motor, and the stress environment formed by the expansion of the pole piece in the use process of the battery is reliably simulated
4. The polyester film 12(Mylar film) is wrapped immediately after the test or is half wrapped before the test process, so that the cell does not have any risk of short circuit after the test.
In summary, compared with the prior art, the withstand voltage detection tool for the battery cell electrode group provided by the invention has a scientific design, and can find the hidden trouble of internal short circuit caused by the fact that foreign matters scratch a diaphragm between a positive electrode and a negative electrode or scratch an insulating layer (namely an insulating film) between the electrode plate and a battery shell due to the fact that the stress of the foreign matters is increased caused by expansion of the electrode plate in the using process of the battery cell when the foreign matters exist between the electrode plate (such as a negative electrode) of the electrode group and the battery shell in advance, so that the withstand voltage detection tool has great practical significance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A withstand voltage detection tool for a battery cell pole group is characterized by comprising lower pressing plates which are horizontally distributed;
a vertical supporting frame (100) is arranged on the rear side of the top of the lower pressing plate (2);
a linear cylinder mounting plate (101) horizontally protruding forwards is arranged at the top of the vertical support frame (100);
a linear cylinder (7) is arranged on the linear cylinder mounting plate (101);
the output end at the lower side of the linear air cylinder (7) penetrates through a through hole reserved on the linear air cylinder mounting plate (101) and then is fixedly connected with the top of the upper pressure plate (6);
the bottom surface of the upper pressing plate (6) is provided with a first conductive cloth (31);
the lower pressing plate (2) is provided with a second conductive cloth (32) at a position right below the first conductive cloth (31);
the top surface of the second conductive cloth (32) is used for placing the pole group bag (11) to be detected;
a pole group assembly (11) comprising a pole group (111) and a battery cover plate (112);
the positive tab and the negative tab of the electrode group are respectively connected with the positive pole column and the negative pole column on the battery cover plate;
The first conductive cloth (31) and the second conductive cloth (32) are connected with a positive electrode test point on the insulation tester (10) through a lead;
the lower pressing plate (2) is provided with a short circuit test probe (8) at the right side position right behind the second conductive cloth (32);
one end of the short circuit test probe (8) is used for contacting the positive pole or the negative pole on the battery cover plate;
and the other end of the short circuit test probe (8) is used for being connected with a negative electrode test point on the insulation tester (10) through a lead.
2. The tool for detecting the withstand voltage of the battery cell pole group according to claim 1, wherein the short circuit test probe (8) is arranged at the center of the front side of a vertically distributed probe mounting plate (81);
the rear side of the probe mounting plate (81) is connected with the output end of the front side of a driving cylinder (82).
3. The tool for detecting the withstand voltage of the battery cell pole group according to claim 1, wherein a pair of first guide rods (102) are respectively arranged on the left side and the right side of the linear cylinder (7) in a penetrating manner on the linear cylinder mounting plate (101);
the top of each pair of first guide rods (102) is connected with the front end and the rear end of a first guide rod connecting block (103) which is longitudinally distributed;
the bottom of each pair of first guide rods (102) is fixedly connected with the upper pressure plate (6).
4. The tool for detecting the withstand voltage of the battery cell pole group according to claim 1, wherein the left end and the right end of the top of the upper pressure plate (6) are respectively provided with a second guide rod fixing block (104);
the linear cylinder mounting plate (101) is vertically provided with a second guide rod (105) in a penetrating way at the longitudinal middle position of each pair of first guide rods (102);
the lower end of the second guide rod (105) is fixedly connected with the middle part of the second guide rod fixing block (104).
5. The tool for detecting the withstand voltage of the battery core electrode group according to claim 1, wherein the pressing plates (2) are respectively provided with a battery cover plate fixing block (5) at the left side and the right side right behind the second conductive cloth (32);
the front side of the gap between the two battery cover plate fixing blocks (5) is used for placing the battery cover plates which are transversely distributed.
6. The tool for detecting the withstand voltage of the battery cell pole group according to any one of claims 1 to 5, wherein the lower pressing plate (2) is provided with a first proximity sensor (4) right behind the second conductive cloth (32);
a second proximity sensor (9) is arranged on the front side of the vertical support frame (100);
and a second proximity sensor (9) located directly above the upper platen (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357726.5A CN114755540A (en) | 2022-04-07 | 2022-04-07 | Withstand voltage detection frock of electricity core utmost point group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357726.5A CN114755540A (en) | 2022-04-07 | 2022-04-07 | Withstand voltage detection frock of electricity core utmost point group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114755540A true CN114755540A (en) | 2022-07-15 |
Family
ID=82329717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210357726.5A Pending CN114755540A (en) | 2022-04-07 | 2022-04-07 | Withstand voltage detection frock of electricity core utmost point group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114755540A (en) |
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2022
- 2022-04-07 CN CN202210357726.5A patent/CN114755540A/en active Pending
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