Test tool
Through the testing tooling of the support structure and drive structure, the problem of unreasonable module steel belt design in the existing technology is solved, and low-cost and efficient module steel belt testing is achieved to meet the requirements of steel belts of different lengths.
Patent Information
- Application Number
- CN202422308706.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The prior art is difficult to accurately simulate the impact of battery cell expansion force on steel strips during the cycle life of energy storage battery modules. The construction of CAE simulation model is difficult and costly, and the module charge and discharge test cycle is long, resulting in unreasonable steel strip design, affecting the stability and cost of the module structure.
Design a test tool, including a support structure and a drive structure, the support structure can adjust the test spacing, the drive structure drives the support part movement, simulates the expansion force and life cycle of the battery cell, and is suitable for steel belt testing of different lengths.
Low-cost and efficient module steel belt tension, fatigue and durability testing is achieved, and adapted to steel belts of different lengths is simplified, reducing costs and improving testing efficiency.
Smart Images
Figure CN223154693U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery module testing, and particularly relates to a testing tooling. Background Art
[0002] At present, the grouping method of energy storage battery modules is to fix the battery cells together through two steel belts or a combination of an upper steel belt, a lower PET belt and end plates, and the steel belts and PET belts bear the expansion force of the module. As the battery cell capacity of energy storage products is getting larger and larger, the expansion force of the battery cells is also increasing. The expansion force of the battery cells will affect the design and cost changes of components such as steel belts and end plates. Low steel belt performance will cause the module structure to be unstable and frequent occurrence of hidden product problems; excessive steel belt performance will cause cost increase and reduce the competitiveness of products.
[0003] The common research methods for module steel belts are usually CAE simulation or through module charge and discharge cycle tests. Due to the difficulty in building the battery cell simulation model and low accuracy, etc., CAE simulation is difficult to accurately simulate the cycle life of the module and the expansion force of the battery cells during the cycle, and it is difficult to simulate the actual working conditions of the steel belt, while the module charge and discharge test has high cost and long cycle. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a testing tooling, aiming to simulate the expansion force and life cycle of battery cells, etc., to conduct tensile, fatigue and durability tests on the module steel belt. The testing tooling can be reused, has low cost, is easy to operate, and can be adapted to steel belts of different lengths for testing.
[0005] To achieve the above purpose, the utility model proposes a testing tooling for testing the steel belt of a battery module, and the testing tooling includes:
[0006] A support structure, including two support parts arranged at intervals in a first direction, the two support parts are used for sleeving and installing at least one steel belt, a testing distance is defined between the end faces of the two support parts facing away from each other, and the size of the testing distance is adjustable; and,
[0007] A driving structure, used to drive at least one of the support parts to move in a direction close to or away from the other support part.
[0008] In an embodiment, the driving structure includes a fixed part and a movable part movably arranged on the fixed part in the first direction, and the movable part is fixedly connected to one of the support parts;
[0009] The other support part is installed on the fixed part.
[0010] In an embodiment, the other support part is installed on one side of the fixed part in the first direction.
[0011] In one embodiment, the driving structure includes a driving member and an electric cylinder connected in sequence, and the push rod of the electric cylinder forms the movable part, wherein:
[0012] The other support portion is mounted on one side of the driving member close to or away from the electric cylinder; or,
[0013] The other support portion is mounted on the cylinder barrel of the electric cylinder.
[0014] In one embodiment, the driving member includes a motor and a speed reducer connected in sequence;
[0015] The other support portion is fixed to the end housing of the motor or the end housing of the speed reducer.
[0016] In one embodiment, at least one of the support portions includes:
[0017] A fixed seat; and,
[0018] At least one mating seat detachably mounted on the fixed seat in a first direction.
[0019] In one embodiment, a pressure sensor is provided between the driving structure and the corresponding support portion.
[0020] In one embodiment, each of the support portions has two end faces in a first direction, and two first side faces disposed opposite to each other between the two end faces, and at least one positioning groove is formed on each of the two first side faces, and the positioning groove is used for accommodating a steel strip.
[0021] In one embodiment, the test tooling further includes at least one limiting member, the limiting member is disposed on an end face of one of the support portions facing away from the other support portion, and a limiting groove is recessed on a side of the limiting member facing the corresponding support portion, and the limiting groove is used for adapting to the steel strip so that the steel strip is clamped and fixed.
[0022] In one embodiment, each of the support portions has two end faces in a first direction, and two first side faces disposed opposite to each other between the two end faces, and a positioning groove is formed on each of the two first side faces, and the width of the positioning groove is greater than the width of the limiting groove.
[0023] In one embodiment, two limiting members are provided, and the two limiting members are respectively fixed to end faces of the two support portions facing away from each other.
[0024] In one embodiment,
[0025] The test tooling further includes a proximity switch disposed on the driving structure, and the proximity switch is used to be triggered when the driving structure reaches the limit working stroke.
[0026] In the technical solution of the present utility model, the annular steel belt is sleeved on two supporting parts, and under the drive of the driving structure, at least one of the supporting parts moves towards or away from the other supporting part, so that the steel belt is stretched. By controlling the moving direction and moving stroke of the corresponding supporting part, the tensile force, fatigue and durability tests of the module steel belt can be realized. A test spacing is defined between the two supporting parts, and the test spacing is matched with the length of the steel belt. By making the size of the test spacing adjustable, different lengths of steel belts can be adapted. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0028] Figure 1 Schematic diagram of the first embodiment (testing a single steel belt) of the test tooling provided by the present utility model;
[0029] Figure 2 For Figure 1 exploded perspective view of the test tooling;
[0030] Figure 3 For Figure 1 schematic diagram of the test tooling (testing multiple steel belts);
[0031] Figure 4 For Figure 1 structural schematic diagram of the supporting part;
[0032] Figure 5 For Figure 1 structural schematic diagram of the limiting member;
[0033] Figure 6 For Figure 1 schematic diagram of another assembled state of the test tooling;
[0034] Figure 7 For Figure 1 schematic diagram of yet another assembled state of the test tooling;
[0035] Figure 8 Schematic diagram of the second embodiment of the test tooling provided by the present utility model;
[0036] Figure 9 is Figure 8 a schematic diagram of another assembled state of the test tooling in the middle.
[0037] Description of the reference numerals in the drawings:
[0038] 100. Test tooling; 1. Support part; 1a. Positioning groove; 11. Fixed seat; 12. Fitting seat; 2. Driving structure; 21. Electric cylinder; 22. Motor; 23. Reducer; 3. Pressure sensor; 4. Limiting part; 41. Limiting groove; 5. Proximity switch.
[0039] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0041] It should be noted that if there are directional indications involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0043] High performance, high reliability and low cost are the goals pursued by enterprises.
[0044] At present, the grouping method of energy storage battery modules is to fix the battery cells together through two steel belts or a combination of an upper steel belt and a lower PET belt and end plates, and the steel belts and PET belts bear the expansion force of the module.
[0045] The cell capacities of energy storage products range from 280Ah to 314Ah, 500Ah, 625Ah, etc., and the capacity is getting larger and larger, and the swelling force of the cell also increases accordingly. The swelling force of the cell will affect the design and cost of components such as steel strips and end plates. Low steel strip performance will cause the instability of the module structure, and frequent invisible problems of the product (such as steel strip fracture, cyclic diving, fire and explosion, etc.). Excessive steel strip performance will cause cost increase and reduce the competitiveness of the product.
[0046] The research methods of the module steel strip are usually CAE simulation or through the module charge and discharge cycle test. Due to the difficulty in building the cell simulation model and the low accuracy, etc., it is difficult for CAE simulation to accurately simulate the cycle life of the module and the swelling force of the cell during the cycle, and it is difficult to simulate the actual working condition of the steel strip; while the module charge and discharge test has high cost and long cycle.
[0047] In view of this, the present utility model provides a test tooling, which can be reused and can simulate the swelling force and life cycle of the cell, etc., to perform tensile, fatigue and durability tests on the module steel strip.
[0048] Please refer to Figures 1 to 2 , the test tooling 100 includes a support structure and a driving structure 2. The support structure includes two support parts 1 arranged at intervals in the first direction. The two support parts 1 are used for at least one steel strip to be sleeved and installed. A test spacing is defined between the end faces of the two support parts 1 facing away from each other. The size of the test spacing is adjustable, and the driving structure 2 is used to drive at least one of the support parts 1 to move in a direction close to or away from the other support part 1.
[0049] In the technical solution of the present utility model, the annularly arranged steel strip is sleeved on the two support parts 1. Driven by the driving structure 2, at least one of the support parts 1 moves in a direction close to or away from the other support part 1, so that the steel strip is stretched. By controlling the movement direction and movement stroke of the corresponding support part 1, tensile, fatigue and durability tests on the module steel strip can be realized. A test spacing is defined between the two support parts 1, and the test spacing is matched with the length of the steel strip. By making the size of the test spacing adjustable, steel strips of different lengths can be adapted.
[0050] It should be noted that the test spacing is determined when the test tooling 100 is assembled and debugged. The size adjustment of the test spacing can be achieved by adjusting the position of the support part 1, changing the thickness of the support part 1, etc. During the test process, the change in the spacing between the two support parts 1 caused by the driving structure 2 driving the support part 1 to move is temporary and short-term, and it is not an adjustment of the test spacing, but only shows that the spacing changes frequently in a short time due to the needs of the test, so as to cause the steel strip to be stretched and loosened, resulting in a change in the force applied.
[0051] Further, the specific form of the driving structure 2 of the present utility model is not limited. It can drive the two supporting parts 1 to move, such as a bidirectional lead screw structure, the cooperation of two cylinders, etc., or it can only drive one supporting part 1 to move.
[0052] In an embodiment of the present utility model, the driving structure 2 includes a fixed part and a movable part movably arranged on the fixed part along a first direction. The movable part is fixedly connected to one of the supporting parts 1, and the other supporting part 1 is installed on the fixed part. By the movable part reciprocating in the first direction, the corresponding supporting part 1 is driven to move, and the other supporting part 1 remains relatively fixed to the fixed part. Therefore, it is a fixed part during the test process, so as to realize the tensile test and durability test of the steel strip.
[0053] For example, when the driving structure 2 is a cylinder, the movable part is a cylinder rod, and the fixed part is a cylinder barrel.
[0054] In order to realize the adjustment of the size of the test spacing, the supporting part 1 is set to a detachable assembly method, such as through screw connection, shaft hole cooperation, snap projection cooperation and other structures. In some embodiments, please refer to Figure 3 , Figure 6 and Figure 7 , and it is realized by changing the initial installation position of the supporting part 1 fixed during the test process. Specifically, the supporting part 1 that is a fixed part during the test process is installed on one side of the fixed part along the first direction. According to the different sizes of the steel strip, the supporting part 1 can be installed on the side end of the fixed part close to the other supporting part 1. At this time, the test spacing between the two supporting parts 1 is L1; the supporting part 1 can also be installed on the side end of the fixed part far from the other supporting part 1. At this time, the test spacing between the two supporting parts 1 is L2. Obviously, L2 > L1.
[0055] Please refer to Figure 2 , in an embodiment of the present utility model, the driving structure 2 includes a driving member and an electric cylinder 21 connected in sequence, and the push rod of the electric cylinder 21 forms the movable part. Based on this embodiment, for steel strips of different sizes, the other supporting part 1 can be installed on the side of the driving member close to or far from the electric cylinder 21, or the other supporting part 1 can be installed on the cylinder barrel of the electric cylinder 21. It should be understood that the cylinder barrel has a certain length in the first direction. Therefore, when the other supporting part 1 is installed on the cylinder barrel, its installation position also has a variety of choices.
[0056] Further, the driving member includes a motor 22 and a speed reducer 23 connected in sequence; the other support portion 1 is fixed to the end housing of the motor 22 or the end housing of the speed reducer 23. The motor 22 can be selected as a servo motor to convert an electrical signal into torque and provide a power source. The speed reducer 23 is a power transmission device that plays a role in reducing speed and increasing torque. Specifically, the driving member cooperates with the motor 22 and the speed reducer 23. The motor 22 converts the electrical signal into torque, and the speed reducer 23 increases the torque of the motor 22. The electric cylinder 21 converts the force in the radial direction of the motor 22 into the force in the axial direction to perform reciprocating motion, thereby simulating the expansion of the module and the charge and discharge process of the battery cell.
[0057] In order to adjust the size of the test spacing, the support portion 1 can be integrally arranged in a form with adjustable thickness. In some embodiments, please refer to Figures 8 to 9 , at least one of the support portions 1 includes a fixed seat 11 and at least one mating seat 12. The mating seat 12 is detachably mounted on the fixed seat 11 along a first direction. By installing or removing the mating seat 12, the thickness of the support portion 1 is changed, thereby changing the position of the end face forming the test spacing. According to actual needs, the thickness can be increased to make the corresponding end face move backward to increase the test spacing, or the thickness can be decreased to make the corresponding end face move forward to decrease the test spacing.
[0058] It should be noted that multiple mating seats 12 can be provided. The shape and thickness of the mating seat 12 are not limited in the present invention, as long as it is convenient for adjustment and installation. The thickness of the mating seat 12 can be the same as or different from the thickness of the fixed seat 11.
[0059] In one embodiment, the size of the mating seat 12 is smaller than that of the fixed seat 11. When multiple steel belts are tested simultaneously and sleeved and installed on the support portion 1 side by side, multiple mating seats 12 can be provided on the corresponding end face of the fixed seat 11. Each mating seat 12 corresponds to each steel belt. The sizes of the multiple mating seats 12 in the first direction can be the same or different, so as to adapt to multiple steel belts of the same specification or different specifications.
[0060] It should be understood that both of the two support portions 1 can be arranged in the form of cooperation between the fixed seat 11 and the mating seat 12, or only one support portion 1 can be arranged in the form of cooperation between the fixed seat 11 and the mating seat 12. This support portion 1 can be the support portion 1 as a fixing member or the support portion 1 that is driven to move.
[0061] For example, in one embodiment, one of the support parts 1 is a structure with variable thickness, and the fixing seat 11 is provided with a matching seat A and a matching seat B on two opposite sides along the first direction, the fixing seat 11 has a thickness of H1, the matching seat has a thickness of H2, and the other support part 1 has a thickness of H3. The minimum distance between the two support parts 1 is W, and the size L of the test spacing has the following cases:
[0062] When the fixing seat 11 and the two matching seats are combined together, L = H1 + 2H2 + W + H3;
[0063] When the fixing seat 11 and the matching seat A are combined together, L = H1 + H2 + W + H3;
[0064] When both the mating seats are removed and only the fixing seat 11 is left, L = H1 + W + H3;
[0065] When only the matching seat B is retained, L=H2+W+H3.
[0066] In order to facilitate detection during the test, a pressure sensor 3 is provided between the driving structure 2 and the corresponding support part 1. The pressure sensor 3 can detect the pressure value in real time, and the force provided by the driving structure 2 can be adjusted according to the pressure value to make it close to the expansion force of the module. At the same time, it can also reflect data in real time during the test, which is convenient for data collection.
[0067] Considering that the steel belt may move on the support part 1, affecting the test results, please refer to Figure 4 In some embodiments, each of the support parts 1 has two end faces located in the first direction, and two first side faces located between the two end faces and arranged oppositely, and at least one positioning groove 1a is formed on each of the two first side faces, and the positioning groove 1a is used to accommodate the steel belt. When the steel belt is sleeved on the support part 1, it contacts two opposite first side faces of the support part 1 and can be accommodated in the corresponding positioning groove 1a. The positioning groove 1a plays a role of limiting, which can prevent the steel belt from moving significantly. It should be understood that the positioning groove 1a is arranged to be through in the first direction, so as not to interfere with the steel belt.
[0068] In one embodiment, the positioning groove 1a matches the shape of the steel strip, thereby achieving a positioning and clamping effect. In another embodiment, the size of the positioning groove 1a is larger than the width of the steel strip, so that it can adapt to steel strips of various specifications within a certain width range, thereby improving versatility.
[0069] It should be understood that when multiple steel strips are tested simultaneously, multiple corresponding positioning grooves 1a may be provided.
[0070] For further information, please refer toFigure 5 The test tooling 100 further includes at least one limiting member 4. The limiting member 4 is disposed on the end face of one of the supporting portions 1 facing away from the other supporting portion 1. A limiting groove 41 is recessed on the side of the limiting member 4 facing the corresponding supporting portion 1. The limiting groove 41 is used to be adapted to the steel strip so that the steel strip is clamped and fixed. Considering that the positioning groove 1a may have a certain play space for the steel strip due to compatibility or processing convenience in design, the limiting member 4 clamps and fixes the edge of the steel strip, so that the relative position between the steel strip and the supporting portion 1 is kept fixed.
[0071] Specifically, the first direction and the second direction are two intersecting directions in a plane. The limiting member 4 is located at the side end of the corresponding supporting portion 1 along the first direction. After the steel strip is sleeved on the supporting portion 1, the paragraph exposed on the corresponding end face of the supporting portion 1 extends along the second direction. Therefore, the limiting groove 41 on the limiting member 4 is arranged to penetrate along the second direction so that the steel strip can pass through and be clamped.
[0072] It should be noted that two limiting members 4 can be provided, and the two limiting members 4 are respectively fixed to the opposite end faces of the two supporting portions 1. Thus, hard limits are imposed on both side ends of the steel strip to ensure a good fixing effect.
[0073] The present utility model does not limit the specific structural forms of the supporting portion 1 and the limiting member 4, as long as the corresponding functions can be realized. When the test tooling 100 tests multiple steel strips simultaneously, the multiple steel strips are arranged side by side, and a plurality of limiting grooves 41 can be arranged at intervals along the same straight line on the limiting member 4.
[0074] In this embodiment, each of the supporting portions 1 has two end faces in the first direction, and two first side faces disposed opposite to each other and located between the two end faces. Positioning grooves 1a are formed on the two first side faces. The width of the positioning groove 1a is greater than the width of the limiting groove 41. The limiting groove 41 is arranged to match the width of the tested steel strip. The positioning groove 1a has a certain compatibility and can be adapted to steel strips of different width dimensions, thereby improving the versatility.
[0075] It should be understood that when the test tooling 100 tests multiple steel strips of different width dimensions simultaneously, the widths of the multiple positioning grooves 1a can be the same as long as the dimensions are compatible, and the dimensions of the multiple limiting grooves 41 should be different, and each limiting groove 41 should be the same as the dimension of the corresponding adapted steel strip.
[0076] In addition, the test tooling 100 further includes a proximity switch 5 disposed on the driving structure 2, and the proximity switch 5 is used to be triggered when the driving structure 2 reaches the limit working stroke, thereby being able to define the maximum stroke and the minimum stroke driven by the driving structure 2.
[0077] It should be noted that, please refer to Figures 8 to 9 , when the support portion 1 is assembled from the fixed seat 11 and the mating seat 12, the limiting member 4 should be fixed on the corresponding mating seat 12. Similarly, groove structures are provided on both the mating seat 12 and the fixed seat 11 to jointly form the positioning groove 1a.
[0078] Please refer to Figure 6 and Figure 7 , due to the change in the installation position of the support portion 1, the area of the end face cooperating with the steel belt changes accordingly. In order to avoid the driving member or the cylinder barrel of the electric cylinder 21, the size of the limiting member 4 is affected. Therefore, only one limiting groove 41 can be provided on one limiting member 4. When multiple steel belts are provided simultaneously, in order to ensure positioning, multiple limiting members 4 can be correspondingly added. Therefore, in the illustrated embodiment, two limiting member structures of different structural forms are involved.
[0079] Taking Figure 1 the embodiment as an example, in the first embodiment, the working principle of the test tooling 100 is as follows:
[0080] Fix the steel belt to the two support portions 1, and then use the limiting member 4 to limit the steel belt to prevent the steel belt from shifting. Adjust according to the pressure value detected by the pressure sensor 3 to make the force provided by the test tooling 100 close to the expansion force of the module, and then make the tooling work at a certain frequency, for example, reciprocate once every 2 seconds, and the moving stroke is 2 mm. Specifically, after the test tooling 100 is powered on, the servo motor is started. The servo motor converts the electrical signal into torque, and the speed reducer 23 increases the torque of the servo motor. The electric cylinder 21 converts the force in the radial direction of the servo motor into the force in the axial direction, driving the pressure sensor 3 and the support portion 1 on the side of the pressure sensor 3 to reciprocate, simulating the expansion force of the module and the charge and discharge process of the battery cell. Test the tensile force, durability or fatigue, etc. of the steel belt according to the test content and the number of tests of the steel belt.
[0081] In the second embodiment, please refer to Figure 8 , compared with the first embodiment, before the test, adjust the installation position of the support portion 1 according to the size of the steel belt, and assemble the fixed seat 11 and the mating seat 12. After sleeving the two steel belts outside the mating seat 12, install two corresponding limiting members 4 to fix the two steel belts, and then debug the force provided by the test tooling 100.
[0082] Please refer to Figure 7In an embodiment, three support portions 1 are provided at intervals, one of the support portions 1 being a movable member that is driven to reciprocate in a first direction, and the other two being fixed members during the test. The steel strip can be selectively sleeved on the movable member and one of the fixed members according to its length.
[0083] The technical solution of the present utility model can simulate the actual working conditions of the module steel strip, can simulate the expansion force and life cycle of the battery cell so as to perform tensile, fatigue and durability tests on the module steel strip, and can simulate charge and discharge cycles at different frequencies. It can test module steel strips with different dimensions such as length, width, cross-sectional area, etc. This structure can test a single steel strip or multiple steel strips simultaneously. The structure is simple, has strong versatility, simplifies the test process, has high test efficiency and low test cost.
[0084] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the present utility model under the inventive concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A test tooling for the steel belt test of a battery module, characterized in that, The described test tooling includes: A support structure, including two support portions spaced along a first direction. The two support portions are for at least one steel strip to be sleeved and installed. A test spacing is defined between the end faces of the two support portions facing away from each other, and the size of the test spacing is adjustable; and, A driving structure for driving at least one of the support portions to move in a direction approaching or away from the other support portion.
2. The test tooling according to claim 1, characterized in that, The driving structure includes a fixed portion and a movable portion movably arranged on the fixed portion along the first direction. The movable portion is fixedly connected to one of the support portions; The other support portion is installed on the fixed portion.
3. The test tooling according to claim 2, wherein The other support portion is installed on one side of the fixed portion along the first direction.
4. The test tooling according to claim 2, characterized in that, The driving structure includes a driving member and an electric cylinder connected in sequence. The push rod of the electric cylinder forms the movable portion, wherein: The other support portion is installed on the side of the driving member close to or away from the electric cylinder; or, The other support portion is installed on the cylinder barrel of the electric cylinder.
5. The test tooling according to claim 4, characterized in that, The driving member includes a motor and a speed reducer connected in sequence; The other support portion is fixed to the end shell of the motor or fixed to the end shell of the speed reducer.
6. The test tooling according to claim 1, wherein, At least one of the support portions includes: A fixed seat; and, At least one fitting seat detachably installed on the fixed seat along the first direction.
7. The test tooling according to claim 1, characterized in that, A pressure sensor is provided between the driving structure and the corresponding support portion.
8. The test tooling according to claim 1, characterized in that Each support portion has two end faces in the first direction and two first side faces located between the two end faces and arranged oppositely. At least one positioning groove is formed on each of the two first side faces, and the positioning groove is for the steel strip to be received.
9. The test tooling according to claim 1 or 8, characterized in that, The test tooling further includes at least one limiting member. The limiting member is arranged on the end face of one of the support portions facing away from the other support portion. A limiting groove is recessed on the side of the limiting member facing the corresponding support portion, and the limiting groove is for fitting with the steel strip so that the steel strip is clamped and fixed.
10. The test tooling according to claim 9, characterized in that, Each support portion has two end faces in the first direction and two first side faces located between the two end faces and arranged oppositely. A positioning groove is formed on each of the two first side faces, and the width of the positioning groove is greater than the width of the limiting groove.
11. The test tooling according to claim 9, wherein Two limiting members are provided, and the two limiting members are respectively fixed to the opposite end faces of the two support portions.
12. The test tooling according to claim 1, characterized in that, The test tooling further includes a proximity switch arranged on the driving structure, and the proximity switch is used to be triggered when the driving structure reaches the limit working stroke.