Test fixture

Abstract

The utility model provides a test fixture, including base plate, right side mounting plate, left side mounting plate, fixed probe, guide rod, battery fixed seat, mobile probe subassembly, said base plate left side and right side are provided with right side mounting plate and left side mounting plate respectively, the mobile probe of mobile probe subassembly aligns the positive pole of cylindrical battery for test, and the guide rod is fixed probe. The beneficial effects of the utility model lie in that the movable probe assembly moves back and forth on the guide rod, the distance between the movable probes on the movable probe assembly can be adjusted, the movable probes are aligned with the positive electrode of the cylindrical battery for testing, the cylindrical batteries of different sizes can be tested, the size is small, the contact is reliable, the batch modular layout is satisfied, and the production efficiency is improved. The structure is simple, stability is good, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of battery test fixture technical field, especially a kind of test fixture. BACKGROUND

[0002] The high-speed development of new energy vehicle industry requires more and more refinement of reducer assembly bench test verification, and a transition fixture is needed for the connection between the reducer assembly and the input end of the bench: an input internal spline flange plate, one end of the input internal spline flange plate has internal splines, the end with internal splines is connected with the external splines of the input end of the reducer, the flange plate end is rigidly connected with the input motor of the test bench, and the input motor of the test bench simulates the real vehicle motor to drive the reducer to perform various types of high-speed and high-torque test, and the length of the internal splines of the input internal spline flange plate has a key influence on the test results.

[0003] Currently, most methods for measuring the length of the internal splines of the input internal spline flange plate are: measuring by hand with a caliper, but the caliper may have slight deviation, i.e., it is not coaxial with the input internal spline flange plate, which results in measurement error, and further may result in using unqualified input internal spline flange plates for testing, which directly leads to differences in the test results of the reducer assembly bench high-speed and high-torque test.

[0004] Lithium batteries are a type of battery that uses non-aqueous electrolyte solution with lithium metal or lithium alloy as positive / negative electrode material. Due to the chemical properties of lithium metal, the processing, storage, and use of lithium metal require very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream; lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and can be charged; with the continuous expansion of the current lithium battery new energy market, the types and specifications of batteries are also diversified. Currently, due to site layout restrictions and capacity problems, some blade batteries need to be arranged before testing, which can meet the customer's desired goals and capacity. In view of this situation, professional and technical personnel of equipment manufacturers need to provide solutions and effectively implement them. In the production process of batteries, probes are aligned with the electrodes of the battery using a probe module to charge and discharge the battery. When the specifications and quantity of the battery change, the position and quantity of the probes in contact with the battery also need to be adjusted accordingly. However, in the existing equipment, the distance between the probes and the battery and the height of the probes are not easy to adjust and control, and the equipment operation is complicated and not convenient to use. SUMMARY

[0005] The utility model discloses a novel test fixture which solves the above technical problems, and the probe assembly moves on the guide rod, the distance between the probes on the probe assembly can be adjusted, the probes can test the positive pole of the cylindrical battery, and the cylindrical battery of different sizes can be tested.

[0006] The utility model is realized through the following technical schemes:

[0007] A test fixture includes a base plate, a right side mounting plate, a left side mounting plate, a fixed probe, a guide rod, a battery fixing seat and a movable probe assembly. The base plate is provided with the right side mounting plate and the left side mounting plate on the left and right sides. The right side mounting plate is provided with a fixed probe mounting hole in the middle. The fixed probe is embedded in the fixed probe mounting hole in the middle of the right side mounting plate. The fixed probe mounting hole is provided with a guide rod mounting hole on both sides. The left side mounting plate is provided with a guide rod mounting hole on both sides. The left side mounting plate is provided with a first groove in the middle. The base plate is provided with a battery fixing seat at the right end. A cylindrical battery is installed in the battery fixing seat at the right end of the base plate. The movable probe assembly is sleeved on the guide rod. The movable probe assembly can move forward and backward on the left side of the guide rod. The fixed probe tests the negative pole of the cylindrical battery. The movable probe of the movable probe assembly tests the positive pole of the cylindrical battery.

[0008] Further, the movable probe assembly includes a movable probe fixing seat, a movable probe, a movable probe adjusting plate, a movable probe fixing block and a movable probe adjusting block. The movable probe fixing seat is provided with guide holes on both sides. The movable probe fixing seat is provided with a second groove in the middle on the left side. The movable probe fixing seat is provided with a movable probe mounting hole in the middle. The movable probe fixing seat is provided with a movable probe mounting position in the middle on the right side. The movable probe fixing seat is provided with a movable probe adjusting plate on the outer wall of the middle on the left side. The movable probe adjusting plate is fixed on the left side of the movable probe fixing seat through the movable probe fixing block. The movable probe adjusting plate is provided with a plurality of movable probe adjusting blocks on the top. The movable probe adjusting blocks drive the movable probe adjusting plate to move forward and backward on the guide rod. The movable probe adjusting plate drives the movable probe fixing seat to move. The movable probe fixing seat drives the movable probe to move. The movable probe tests the positive pole of the cylindrical battery.

[0009] Further, the movable probe adjusting plate is provided with a limiting block on both sides. The limiting block limits the movable probe to move forward and backward on the guide rod.

[0010] Further, the limiting block is in the shape of L.

[0011] Further, the cylindrical battery is in the model of 18650 or 21700.

[0012] The utility model discloses the beneficial effect lies in: through the mobile probe subassembly on the guide rod moves back and forth, and can adjust the interval of mobile probe on mobile probe subassembly, and mobile probe is tested to the cylindrical battery positive pole, and can test the cylindrical battery of different size, small, reliable contact, satisfy batch modularization layout, simple structure, good stability, simple operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is test fixture structure schematic drawing of the utility model;

[0014] Figure 2 It is test fixture explosion structure schematic drawing of the utility model;

[0015] Figure 3 It is mobile probe subassembly structure schematic drawing of the utility model;

[0016] Figure 4 It is mobile probe subassembly explosion structure schematic drawing of the utility model;

[0017] Reference Signs: 1, bottom plate; 2, right side mounting plate; 3, left side mounting plate; 4, fixed probe; 5, guide rod; 6, battery fixed seat; 7, mobile probe subassembly; 71, mobile probe fixed seat; 72, mobile probe; 73, mobile probe adjusting plate; 730, limit block; 74, mobile probe fixed block; 75, mobile probe adjusting block; 8, cylindrical battery. DETAILED DESCRIPTION

[0018] The application will be further described below in conjunction with the drawings and specific embodiments:

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature; the terminology used in the description and the claims of the present application, as well as in the abstract, is intended to be interpreted broadly; the terms "comprises", "comprising", "includes", "including" and "has", "having" and any variations thereof are intended to cover a non-exclusive inclusion; the terms "first", "second", and the like used in the description and the claims of the present application are used for distinguishing between similar objects and are not necessarily used in all embodiments.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] For reference Figures 1-4 As shown, a test fixture includes a base plate, a right mounting plate, a left mounting plate, a fixed probe, a guide rod, a battery holder, and a movable probe assembly. The base plate has a right mounting plate and a left mounting plate on its left and right sides, respectively. The right mounting plate has a fixed probe mounting hole in its center, and the fixed probe is embedded in the fixed probe mounting hole in the center of the right mounting plate. Guide rod mounting holes are located on both sides of the fixed probe mounting hole. The left mounting plate also has guide rod mounting holes on both sides, and a first groove is located in its center. A battery holder is located at the right end of the base plate, and a cylindrical battery is installed in the battery holder at the right end of the base plate. The movable probe assembly is fitted onto the guide rod, allowing it to move back and forth on the left side of the guide rod. The fixed probe is aligned with the negative terminal of the cylindrical battery for testing, and the movable probe assembly's movable probe is aligned with the positive terminal of the cylindrical battery for testing.

[0022] Preferably, the moving probe assembly includes a moving probe holder, a moving probe, a moving probe adjustment plate, a moving probe fixing block, and a moving probe adjustment block. The moving probe holder has guide holes on both sides, a second groove in the middle of the left side, a moving probe mounting hole in the middle, and a moving probe mounting position in the middle of the right side. The moving probe adjustment plate is located on the outer side wall of the middle left side of the moving probe holder. The moving probe adjustment plate is fixed to the left side of the moving probe holder by the moving probe fixing block. Several moving probe adjustment blocks are located on the top of the moving probe adjustment plate. The moving probe adjustment blocks drive the moving probe adjustment plate to move back and forth on the guide rod. The moving probe adjustment plate drives the moving probe holder to move, and the moving probe holder drives the moving probe to move. The moving probe is aligned with the positive electrode of the cylindrical battery for testing.

[0023] Preferably, the moving probe adjustment plate is provided with limiting blocks on both sides, and the limiting blocks restrict the moving probe from moving back and forth on the guide rod.

[0024] Preferably, the limiting block is L-shaped.

[0025] Preferably, the cylindrical battery model is 18650 or 21700.

[0026] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also make proper change and modification to the above embodiment. Therefore, the utility model is not limited to the specific embodiment disclosed and described above, and some modification and change of the utility model should also fall into the protection scope of the claims of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A test fixture, characterized by: The utility model relates to a kind of cylindrical battery testing device, including bottom plate, right side mounting plate, left side mounting plate, fixed probe, guide rod, battery fixing seat, mobile probe assembly, the bottom plate left and right sides are equipped with right side mounting plate, left side mounting plate respectively, the right side mounting plate middle part is equipped with fixed probe mounting hole, the fixed probe is embedded in the fixed probe mounting hole in the right side mounting plate middle part, the fixed probe mounting hole both sides are equipped with guide rod mounting hole, the left side mounting plate both sides are equipped with guide rod mounting hole, the left side mounting plate middle part is equipped with first recess, the bottom plate right end is equipped with battery fixing seat, cylindrical battery is installed in the battery fixing seat in the bottom plate right end, the mobile probe assembly is nested in the guide rod, the mobile probe assembly can be moved in guide rod left side before and after, the fixed probe is tested to cylindrical battery negative pole, and the mobile probe of the mobile probe assembly is tested to cylindrical battery positive pole.

2. The test fixture of claim 1, wherein: The mobile probe assembly includes a mobile probe fixing seat, a mobile probe, a mobile probe adjusting plate, a mobile probe fixing block, and a mobile probe adjusting block. The mobile probe fixing seat has guide holes on both sides. The left middle part of the mobile probe fixing seat has a second recess. The middle part of the mobile probe fixing seat has a mobile probe mounting hole. The right middle part of the mobile probe fixing seat has a mobile probe mounting position. The left middle part of the mobile probe fixing seat has a mobile probe adjusting plate on the outer wall. The mobile probe adjusting plate is fixed to the left side of the mobile probe fixing seat through the mobile probe fixing block. The top of the mobile probe adjusting plate has several mobile probe adjusting blocks. The mobile probe adjusting blocks move the mobile probe adjusting plate back and forth along the guide rod. The mobile probe adjusting plate moves the mobile probe fixing seat. The mobile probe fixing seat moves the mobile probe. The mobile probe tests the cylindrical battery positive pole.

3. The test fixture of claim 2, wherein: The mobile probe adjusting plate has limiting blocks on both sides, which limit the movement of the mobile probe back and forth along the guide rod.

4. The test fixture of claim 3, wherein: The limiting blocks are L-shaped.

5. The test fixture of claim 1, wherein: The cylindrical battery model is 18650 or 21700.

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