阅读说明：本技术 一种极群测量辅助夹具 (Auxiliary clamp for pole group measurement ) 是由 张双地 吴万斌 李皎 于 2021-08-12 设计创作，主要内容包括：本发明公开一种极群测量辅助夹具,所述极群测量辅助夹具包括承载台、两个夹板以及基准侧板,两个所述夹板沿上下向延伸,且前后相对设置,两个所述夹板之间的间距可调节设置；所述基准侧板沿上下向延伸,设于所述承载台的侧边,且设于所述夹板的侧边；所述承载台、两个所述夹板与所述基准侧板围合形成用以容置待测极群的容置腔。本发明旨在解决现有极群测量方法无法测量极群内的隔板与极板的侧向偏移的问题。(The invention discloses an auxiliary clamp for measuring a pole group, which comprises a bearing platform, two clamping plates and a reference side plate, wherein the two clamping plates extend in the vertical direction and are arranged oppositely in the front and back direction, and the distance between the two clamping plates can be adjusted; the reference side plate extends up and down, is arranged on the side edge of the bearing table and is arranged on the side edge of the clamping plate; the bearing table, the two clamping plates and the reference side plate are enclosed to form an accommodating cavity for accommodating the electrode group to be tested. The invention aims to solve the problem that the existing pole group measuring method cannot measure the lateral deviation of a partition plate and a polar plate in a pole group.)

1. An auxiliary fixture for pole group measurement, comprising:

a bearing table;

the two clamping plates extend upwards and downwards and are arranged oppositely front and back, and the distance between the two clamping plates can be adjusted; and

the reference side plate extends along the vertical direction, is arranged on the side edge of the bearing table and is arranged on the side edge of the clamping plate;

the bearing table, the two clamping plates and the reference side plate are enclosed to form an accommodating cavity for accommodating the electrode group to be tested.

2. The pole group measuring auxiliary fixture as claimed in claim 1, wherein the reference side plate is provided with a measuring groove for a measuring tool to pass through, and the measuring groove is used for measuring the distance between the outer side surface of the reference side plate and the lateral direction of the pole group to be measured.

3. The pole group measurement auxiliary fixture of claim 2, wherein the number of the measurement grooves is two, and the two measurement grooves are distributed in an up-down direction.

4. The pole group measuring auxiliary fixture according to claim 3, wherein two measuring grooves are provided at upper and lower ends of the reference side plate.

5. The pole group measuring auxiliary jig according to claim 1, wherein avoidance grooves are provided at corresponding positions of top ends of left and right sides of the two clamping plates, respectively, the avoidance grooves being provided to avoid movement of the height measuring tool in the front-rear direction.

6. The pole group measuring auxiliary jig of claim 1, wherein the reference side plates are provided in two, and are provided on left and right sides of the clamping plate, respectively.

7. The pole group measuring auxiliary clamp according to claim 1, wherein the clamping plates comprise a fixed clamping plate and a movable clamping plate, the lower end of the fixed clamping plate is fixedly arranged on the bearing table, and the movable clamping plate is adjustably arranged in front of the fixed clamping plate.

8. The pole group measurement auxiliary clamp according to claim 7, wherein the rear end of the reference side plate is fixedly disposed on the fixed clamp plate, the front end of the reference side plate is provided with a first notch along the front-back direction, the front end of the bearing table is provided with a second notch along the front-back direction, one end of the movable clamp plate corresponding to the first notch is provided with a first protrusion, the lower end of the movable clamp plate is provided with a second protrusion, the first protrusion is matched with the first notch, the second protrusion is matched with the second notch, an adjustable connecting member is inserted between the fixed clamp plate and the movable clamp plate, and the adjustable connecting member is used for adjusting the distance between the movable clamp plate and the fixed clamp plate.

9. The pole group measurement accessory fixture of claim 8, wherein the adjustable connector comprises a screw assembly.

10. The pole group measurement auxiliary fixture of claim 1, wherein the material of the two clamping plates and the reference side plate comprises a transparent material.

Technical Field

The invention relates to the technical field of storage battery production, in particular to an auxiliary clamp for measuring a pole group.

Background

The lead storage battery mainly comprises electrolyte, a battery jar and a polar group, wherein the polar group mainly comprises a positive plate, a negative plate and a partition plate, and the partition plate mainly plays a role in storing the electrolyte, serving as a gas channel for compounding oxygen, preventing active substances from falling off and preventing short circuit between the positive electrode and the negative electrode.

At present, the assembled electrode group is generally assembled by a full-automatic sheet wrapping machine or manually wrapped by staff, and a U-shaped sheet wrapping method is generally used, namely two separators wrap a positive plate in the middle of a U-shaped structure, a negative plate is arranged between the two separators of the U-shaped structure, and the positive plate and the negative plate are alternately arranged. The baffle is as separating positive plate and negative plate, avoid the isolation medium of positive plate and negative plate contact short circuit, the edge of general baffle can surpass the edge of positive plate and negative plate, and in the battery use, along with the passage of time, the polar plate can increase, if grow up when a polar plate and surpass behind the baffle, can form the short circuit between positive plate and the negative plate, cause the termination of battery life, so the baffle surpasss the partial relation of polar plate to the life of battery, and the offset that package piece technology equipment baffle and polar plate exist also can influence the life of battery.

However, in the prior art, the measurement method of the counter electrode group for evaluating the wrapping quality and the battery life mainly comprises the steps of manually fixing the electrode group, placing the electrode group on the measurement platform, and measuring the heights of the positive electrode plate, the negative electrode plate and the separator in the electrode group, wherein the measurement process has large error, the measurement time is long, the consistency of multiple measurements cannot be ensured, the left and right relative offsets of the positive electrode plate, the negative electrode plate and the separator in the electrode group cannot be measured, and the reliability of the measurement result is low.

Disclosure of Invention

The invention mainly aims to provide an auxiliary clamp for measuring a pole group, and aims to solve the problems that the measurement error of the pole group is large, the measurement time is long, the consistency of multiple measurements cannot be ensured, the left and right relative offset of a positive plate, a negative plate and a partition plate in the pole group cannot be measured, and the reliability of a measurement result is low.

In order to achieve the above object, the present invention provides an auxiliary fixture for measuring a pole group, comprising:

a bearing table;

the two clamping plates extend upwards and downwards and are arranged oppositely front and back, and the distance between the two clamping plates can be adjusted; and

the reference side plate extends along the vertical direction, is arranged on the side edge of the bearing table and is arranged on the side edge of the clamping plate;

the bearing table, the two clamping plates and the reference side plate are enclosed to form an accommodating cavity for accommodating the electrode group to be tested.

Optionally, a measuring groove is formed in the reference side plate in a penetrating manner, and the measuring groove is used for allowing a measuring tool to pass through and measuring the lateral distance between the outer side surface of the reference side plate and the electrode group to be measured.

Optionally, the number of the measuring grooves is two, and the two measuring grooves are distributed along the up-down direction.

Optionally, the two measuring grooves are disposed at the upper end and the lower end of the reference side plate.

Optionally, two corresponding positions on the top ends of the left side and the right side of the clamping plate are respectively provided with an avoiding groove, and the avoiding grooves are used for avoiding the movement of the height measuring tool along the front-back direction.

Optionally, the number of the reference side plates is two, and the reference side plates are respectively arranged at the left side and the right side of the clamping plate.

Optionally, the splint include solid fixed splint and activity splint, gu fixed splint's lower extreme is fixed set up in the plummer, activity splint adjustable set up in gu fixed splint's the place ahead.

Optionally, the rear end of benchmark curb plate fixed set up in solid fixed splint, the front end of benchmark curb plate is provided with first breach along the fore-and-aft direction, the front end of plummer is provided with the second breach along the fore-and-aft direction, movable splint corresponds the one end of first breach is provided with first arch, movable splint's lower extreme is provided with the second arch, first arch with first breach cooperation, the second arch with the cooperation of second breach, fixed splint with adjustable connecting piece is worn to be equipped with between the movable splint, adjustable connecting piece is used for adjusting movable splint distance gu fixed splint's distance.

Optionally, the adjustable connection comprises a screw assembly.

Optionally, the two clamping plates and the reference side plate are made of transparent materials.

In the technical scheme of the invention, the bearing platform is used for bearing and placing the pole group to be measured, and under the influence of the self gravity of the pole group to be measured, the bottom of the pole group to be measured is tightly attached to the bearing platform, so that the partition plate in the pole group to be measured is flush with the bottom end of the pole plate, and the bearing platform is also used as a bottom reference surface for measuring the height of the pole group to be measured, so that the constant bottom reference surface can be referred when the height of the pole group to be measured is measured, and the accuracy and the stability when the height of the pole group to be measured is measured are ensured; the reference side plate extends vertically, is arranged on the side edge of the bearing table and is arranged on the side edge of the clamping plate, and the reference side plate is used as a lateral reference surface for measuring the distance between the lateral direction of the to-be-measured electrode group and the reference side plate, so that the reference side plate can be used as a uniform reference surface for lateral measurement, and the measurement accuracy is ensured; the two clamping plates extend in the vertical direction and are oppositely arranged in the front-back direction, the distance between the two clamping plates can be adjusted, the two clamping plates are arranged in the front-back direction of the to-be-measured pole group and can be adjusted, when the to-be-measured pole group is placed on the bearing table and the bottom of the to-be-measured pole group is aligned with the bearing table, the distance between the two clamping plates is adjusted to clamp and fix the to-be-measured pole group, the movement between a partition plate and a polar plate in the to-be-measured pole group is avoided, the measurement stability of the height of the to-be-measured pole group and the distance between the side direction of the to-be-measured pole group and the reference side plate are further guaranteed, the consistency in multiple times of measurement is further guaranteed, and the two clamping plates fix the pole group, so that the measurement is convenient and the measurement speed is increased; the bearing platform, two splint with the benchmark curb plate encloses to close and forms the holding chamber that is used for the holding utmost point crowd that awaits measuring, surrounds the utmost point crowd that awaits measuring, avoids the influence of environmental factor to the utmost point crowd that awaits measuring, and the measurement to the utmost point crowd that awaits measuring is disturbed, produces measuring error. The method comprises the following steps of measuring the height of a to-be-measured electrode group and the distance from the side direction of the to-be-measured electrode group to a reference side plate, wherein the height of each partition plate and each pole plate in the to-be-measured electrode group and the distance from each partition plate and each pole plate to the reference side plate are mainly measured, the average value of the height of each partition plate, the average value of the calculated deviation value, the distance from each partition plate to the reference side plate and the calculated deviation value are used for evaluating the operation quality of coating the partition plates on the pole plates by a sheet coating process, and the operation quality is worse if the average value meets the requirement and the deviation value is larger; because of the existence of the polar plate growth phenomenon, when the polar plate growth exceeds the partition plate, the battery short circuit can be caused, and the service life of the battery is finished, so that the average value of the relative height of each partition plate relative to each polar plate and the lateral relative distance of each partition plate relative to each polar plate and the calculated deviation value can reflect the average distance from the edge of each partition plate to the edge of each polar plate and the minimum distance of fluctuation, and the method can be used for assisting in evaluating the service life of the battery using the polar group to be tested.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an auxiliary fixture for measuring a polar group according to an embodiment of the present invention;

fig. 2 is an exploded view of the auxiliary jig for pole group measurement in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Auxiliary clamp for pole group measurement	23	Dodging groove
1	Bearing platform	3	Reference side plate
				11	Second gap	31	Measuring tank
2	Clamping plate	32	First gap
				21	Fixing splint	4	Adjustable connecting piece
22	Movable splint	4a	Screw assembly
				221	First bump	5	Containing cavity
222	Second projection

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The lead storage battery mainly comprises electrolyte, a battery jar and a polar group, wherein the polar group mainly comprises a positive plate, a negative plate and a partition plate, and the partition plate mainly plays a role in storing the electrolyte, serving as a gas channel for compounding oxygen, preventing active substances from falling off and preventing short circuit between the positive electrode and the negative electrode.

At present, the assembled electrode group is generally assembled by a full-automatic sheet wrapping machine or manually wrapped by staff, and a U-shaped sheet wrapping method is generally used, namely two separators wrap a positive plate in the middle of a U-shaped structure, a negative plate is arranged between the two separators of the U-shaped structure, and the positive plate and the negative plate are alternately arranged. The baffle is as separating positive plate and negative plate, avoid the isolation medium of positive plate and negative plate contact short circuit, the edge of general baffle can surpass the edge of positive plate and negative plate, and in the battery use, along with the passage of time, the polar plate can increase, if grow up when a polar plate and surpass behind the baffle, can form the short circuit between positive plate and the negative plate, cause the termination of battery life, so the baffle surpasss the partial relation of polar plate to the life of battery, and the offset that package piece technology equipment baffle and polar plate exist also can influence the life of battery.

However, in the prior art, the measurement method of the counter electrode group for evaluating the wrapping quality and the battery life mainly comprises the steps of manually fixing the electrode group, placing the electrode group on the measurement platform, and measuring the heights of the positive electrode plate, the negative electrode plate and the separator in the electrode group, wherein the measurement process has large error, the measurement time is long, the consistency of multiple measurements cannot be ensured, the left and right relative offsets of the positive electrode plate, the negative electrode plate and the separator in the electrode group cannot be measured, and the reliability of the measurement result is low.

In view of the above, fig. 1 to 2 illustrate an embodiment of an auxiliary fixture 100 for pole group measurement according to the present invention, and the auxiliary fixture 100 for pole group measurement will be described with reference to the accompanying drawings.

Referring to fig. 2, the auxiliary clamp 100 for measuring a polar group includes a bearing table 1, two clamping plates 2 and a reference side plate 3, the two clamping plates 2 extend in the vertical direction and are oppositely arranged in the front-back direction, and the distance between the two clamping plates 2 is adjustable; the reference side plate 3 extends up and down, is arranged on the side edge of the bearing table 1, and is arranged on the side edge of the clamping plate 2; the bearing table 1, the two clamping plates 2 and the reference side plate 3 are enclosed to form an accommodating cavity 5 for accommodating the electrode group to be tested.

In the technical scheme of the invention, the bearing platform 1 is used for bearing and placing the pole group to be measured, and under the influence of the self gravity of the pole group to be measured, the bottom of the pole group to be measured is clung to the bearing platform 1, so that a partition plate in the pole group to be measured is flush with the bottom end of the pole plate, and the bearing platform 1 is also used as a bottom reference surface for measuring the height of the pole group to be measured, so that a constant bottom reference surface can be referred when the height of the pole group to be measured is measured, and the accuracy and the stability when the height of the pole group to be measured is measured are ensured; the reference side plate 3 extends in the vertical direction, is arranged on the side edge of the bearing table 1 and is arranged on the side edge of the clamping plate 2, and the reference side plate 3 is used as a lateral reference surface for measuring the distance between the lateral direction of the to-be-measured electrode group and the reference side plate 3, so that the reference side plate 3 can be used as a uniform reference surface for lateral measurement, and the measurement accuracy is ensured; the two clamping plates 2 extend in the vertical direction and are oppositely arranged in the front-back direction, the distance between the two clamping plates 2 is adjustable, the two clamping plates 2 are arranged in the front-back direction of the to-be-measured pole group and can be adjusted, when the to-be-measured pole group is placed on the bearing table 1 and the bottom of the to-be-measured pole group is aligned with the bearing table 1, the distance between the two clamping plates 2 is adjusted to clamp and fix the to-be-measured pole group, the movement between a partition plate and a polar plate in the to-be-measured pole group is avoided, the stability of the measurement of the height of the to-be-measured pole group and the lateral distance of the to-be-measured pole group relative to the reference side plate 3 is further ensured, and the two clamping plates 2 fix the pole group, so that the measurement is convenient and the measurement speed is increased; the plummer 1, two splint 2 with 3 enclose to close and form the holding chamber 5 that is used for the holding utmost point crowd that awaits measuring, surround the utmost point crowd that awaits measuring, avoid environmental factor to the influence of the utmost point crowd that awaits measuring, disturb the measurement to the utmost point crowd that awaits measuring, produce measuring error. The method comprises the following steps of measuring the height of a to-be-measured electrode group and the distance from the side direction of the to-be-measured electrode group to a reference side plate 3, wherein the height of each partition plate and each pole plate in the to-be-measured electrode group and the distance from each partition plate and each pole plate to the reference side plate 3 are mainly measured, the average value of the height of each partition plate, the average value of the calculated deviation value, the distance from each partition plate to the reference side plate 3 and the calculated deviation value are used for evaluating the quality of the operation of coating the partition plates on the pole plates by a sheet coating process, and the larger the deviation value is, the worse the operation quality is under the condition that the average value meets the requirement; because of the existence of the polar plate growth phenomenon, when the polar plate growth exceeds the partition plate, the battery short circuit can be caused, and the service life of the battery is finished, so that the average value of the relative height of each partition plate relative to each polar plate and the lateral relative distance of each partition plate relative to each polar plate and the calculated deviation value can reflect the average distance from the edge of each partition plate to the edge of each polar plate and the minimum distance of fluctuation, and the method can be used for assisting in evaluating the service life of the battery using the polar group to be tested.

Referring to fig. 1, a measuring groove 31 is formed in the reference side plate 3, and the measuring groove 31 is used for a measuring tool to pass through and measure a distance between an outer side surface of the reference side plate 3 and a lateral direction of the electrode group to be measured. The measuring groove 31 is formed in the reference side plate 3, so that a measuring tool can use the outer surface of the reference side plate 3 as a reference surface, during measurement, the measuring tool can abut against the outer surface of the reference side plate 3, the distance between the lateral side of the electrode group to be measured and the outer surface of the reference side plate 3 is measured, operation is convenient, the front length and the rear length of the measuring groove 31 exceed the thickness of the electrode group to be measured, interference between the measuring groove 31 and the separators or polar plates at the front end and the rear end of the measuring tool during measurement can be avoided, all the lateral separators and all the lateral polar plates of the electrode group to be measured can be measured, measurement data are complete, and the obtained measurement result is accurate.

Further, referring to fig. 1, the number of the measuring grooves 31 is two, and the two measuring grooves 31 are distributed in the up-down direction. The two measuring grooves 31 are arranged on the reference side plate 3 and used for measuring the lateral upper and lower different positions of the pole group to be measured, recording multiple groups of data and evaluating the vertical state of the pole group to be measured.

Still further, referring to fig. 1, two measuring grooves 31 are disposed at the upper and lower ends of the reference side plate 3. The two measuring grooves 31 are respectively arranged at the upper end part and the lower end part of the reference side plate 3, the upper distance and the lower distance of the point position of the pole group to be measured are measured farthest, the difference value of the measured data can be maximized, and therefore the vertical state of the pole group to be measured can be evaluated more easily.

Referring to fig. 1, avoidance grooves 23 are respectively formed at corresponding positions of top ends of left and right sides of the two clamping plates 2, and the avoidance grooves 23 are used for avoiding the movement of the height measuring tool along the front-back direction. The height measuring tool needs to move along the front and back direction through the measuring arm so as to measure the height of each partition plate and each polar plate in the to-be-measured polar group, the avoidance groove 23 is used for avoiding the measurement of the measuring arm, and the interference of the measuring arm with the clamping plate 2 is avoided when the measuring arm measures the height of the partition plates or the polar plates at the front and back ends of the to-be-measured polar group, so that the measured data is more complete. Two the corresponding position on the top of the left and right sides of splint 2 all is provided with dodges the groove 23 for the height measurement instrument is measured the utmost point crowd's that awaits measuring left and right sides, records multiunit data, avoids measuring error, makes data have more the credibility.

Referring to fig. 1, the two reference side plates 3 are respectively disposed on the left and right sides of the clamping plate 2. Two benchmark curb plate 3, two splint 2 with what plummer 1 enclosed and closes formation 5 openings in holding chamber are littleer, make environmental factor to the influence of utmost point crowd that awaits measuring littleer, and measured data is more stable. Two benchmark curb plate 3 set up respectively in the left and right sides of splint 2, and two benchmark curb plate 3 all can regard as the benchmark face to measure the utmost point crowd that awaits measuring for when carrying out the lateral measurement operation of the utmost point crowd that awaits measuring, need not to distinguish the utmost point crowd measures the left and right directions of auxiliary fixture 100, guarantee with one side measure two sets of data can, convenient operation.

Referring to fig. 2, the clamp plate 2 includes a fixed clamp plate 21 and a movable clamp plate 22, the lower end of the fixed clamp plate 21 is fixedly disposed on the plummer 1, and the movable clamp plate 22 is adjustably disposed in front of the fixed clamp plate 21. The fixed clamp plate 21 is vertically fixed on the bearing table 1, and when the to-be-tested electrode group is placed, the to-be-tested electrode group can slide onto the bearing table 1 along the fixed clamp plate 21, so that the deviation between a partition plate and a polar plate in the to-be-tested electrode group caused by manual operation and positioning of the to-be-tested electrode group is avoided; and fixed splint 21 with plummer 1 fixed connection, when adjusting movable splint 22 presss from both sides tight fixed utmost point crowd that awaits measuring, splint 2 with plummer 1 can not relative movement, and then can not drive utmost point crowd that awaits measuring and remove, has further avoided the skew of the baffle with the polar plate in the utmost point crowd that awaits measuring, reduces the skew error of artificial influence in the measurement process, makes the measurement to the utmost point crowd that awaits measuring more accurate.

Referring to fig. 1, the rear end of the reference side plate 3 is fixedly disposed on the fixed clamp plate 21, the front end of the reference side plate 3 is provided with a first notch 32 along the front-back direction, the front end of the plummer 1 is provided with a second notch 11 along the front-back direction, one end of the movable clamp plate 22 corresponding to the first notch 32 is provided with a first protrusion 221, the lower end of the movable clamp plate 22 is provided with a second protrusion 222, the first protrusion 221 is matched with the first notch 32, the second protrusion 222 is matched with the second notch 11, an adjustable connecting member 4 is disposed between the fixed clamp plate 21 and the movable clamp plate 22 in a penetrating manner, and the adjustable connecting member 4 is used for adjusting the distance from the movable clamp plate 22 to the fixed clamp plate 21. Benchmark curb plate 3 vertical fixation in on the solid fixed splint 21, just benchmark curb plate 3 perpendicular to plummer 1, 3 fixed settings of benchmark curb plate are fixed with the side direction reference surface, have guaranteed the invariant of side direction benchmark, and then guarantee to await measuring utmost point crowd measuring accuracy. The first notch 32 cooperates with the first protrusion 221 to limit the movement of the movable clamp plate 22 in the up-and-down direction; the second notch 11 is matched with the second protrusion 222 to limit the movement of the movable clamping plate 22 along the left-right direction; the first notch 32 is matched with the first protrusion 221, and the second notch 11 is matched with the second protrusion 222, so that the movable clamp plate 22 can only move along the front-back direction, and the movable clamp plate 22 is prevented from moving along other directions to drive a to-be-measured electrode group to move, so that the deflection of a separator and a polar plate in the to-be-measured electrode group is caused, and the measuring result is influenced. Adjustable connector 4 is used for connecting the outside of holding chamber 5 adjustable connector 4 with solid fixed splint 21 avoids adjustable connector 4 and the interference of the utmost point crowd that awaits measuring, just adjustable connector 4 removable setting, so that the utmost point crowd that awaits measuring arranges in behind the inside of holding chamber 5, movable splint 22 with set up again between solid fixed splint 21 adjustable connector 4, adjustable connector 4 be used for right movable splint 22 with the distance of solid fixed splint 21 spare is adjusted and is awaited measuring with the clamp. It should be noted that the number of the adjustable connecting pieces 4 is not limited, and may be two, three or four, in this embodiment, the number of the adjustable connecting pieces 4 is two, one of the two adjustable connecting pieces 4 is disposed on the upper ends of the movable clamping plate 22 and the fixed clamping plate 21, which exceed the part of the electrode group to be tested, and the other is disposed on the second notch 11 and the second protrusion 222, and the two adjustable connecting pieces 4 are disposed up and down along the left and right center lines of the movable clamping plate 22, the two adjustable connecting pieces 4 can adjust and clamp the electrode group to be tested, i.e., fix the electrode group to be tested, the number of the adjustable connecting pieces 4 is small, which is convenient for disassembly and assembly, and the adjustable connecting pieces 4 are disposed along the center line of the movable clamping plate 22, so that the left and right forces of the electrode group to be tested are balanced, and the extrusion offset between the separator and the electrode plate in the electrode group to be tested due to uneven forces is avoided, the accuracy of measurement is guaranteed.

Specifically, please refer to fig. 1, the adjustable connecting member 4 may be a screw assembly or a combination of a pawl connecting rod and a clamping structure, in this embodiment, the adjustable connecting member 4 is a screw assembly 4a, the screw assembly 4a can be steplessly adjusted, the thickness of the electrode group to be measured does not need to be limited, the universality is strong, and the screw assembly 4a has a small installation area, is simple to operate, and is convenient to disassemble and assemble.

Referring to fig. 2, the two clamping plates 2 and the reference side plate 3 are made of transparent materials. Will splint 2 with the material of benchmark curb plate 3 is selected for transparent material, can observe the utmost point crowd that awaits measuring in the measurement process is in the state of the inside of holding chamber 5, be convenient for to the judgement of measured data usability, guarantee the accuracy of available data. The material of plummer 1 also selects transparent material, is convenient for slide in at the utmost point crowd that awaits measuring 5 internal slipping extremely when plummer 1 is last, observe utmost point crowd bottom and plummer 1 parallel and level that awaits measuring to when guaranteeing to measure utmost point crowd that awaits measuring utmost point crowd bottom with plummer 1 is in the parallel and level state, and then guarantees measured data's accuracy.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.