Edge plugging frame elasticity testing device and method for screening storage battery edge plugging frame by using same

Abstract

The invention discloses an edge plugging frame elasticity testing device and a method for screening storage battery edge plugging frames by using the same. The testing device comprises a base, vertical plates are fixed to the two ends of the base respectively, a side plate is arranged at one side end of the base, and a graduated scale is fixed to the top of the side plate; the pressure sensor is located between the two vertical plates and fixedly connected with the vertical plate at one end, and a pressure measuring plate is fixed to the pressure sensor; the sliding pressing plate and the pressure measuring plate are arranged in parallel, the end, away from the pressure measuring plate, of the sliding pressing plate is rotationally connected with an adjusting rod, the adjusting rod is in threaded connection with the vertical plate at the other end, the plate group and the edge plugging frame are placed between the sliding pressing plate and the pressure measuring plate, and the distance between the sliding pressing plate and the pressure measuring plate is obtained by referring to the calibrated scale. According to the invention, the edge plugging frames which do not meet the requirements can be quickly screened through the testing device, the condition of unreasonable plate group unit cell assembly caused by the use of the edge plugging frames is avoided, the proper edge plugging frames are screened out according to the storage batteries of different models, and the use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of battery accessories, and in particular to a plugging frame elasticity testing device and a method for screening battery plugging frames using the same. Background Art

[0002] The vibration resistance of heavy-duty automobile batteries is the main factor affecting their service life. Currently, the more effective means to improve vibration resistance is to cast hot melt adhesive and install plug side frames to ensure that the pole groups are tightly assembled in a single cell.

[0003] The principle of the plug side frame is to use the elasticity of the plug side frame material itself and the designed elastic structure. When subjected to pressure, the thickness changes, so that the pole group has a certain adjustment range in the thickness direction to achieve the purpose of tight assembly. The thickness of the pole group is different, and the assembly pressure of different pole groups after entering the slot is different. If the pole group is thick, the assembly pressure is large, which may cause the plug side frame to break when it is inserted; if the pole group is thin, it exceeds the adjustment range of the plug side frame and cannot achieve the effect of tight assembly. Therefore, the plug side frame required for each battery is different. Although there are many types of plug side frames in structure and size, there is still a lack of simple and effective methods to select suitable plug side frames for specific types of batteries.

[0004] Therefore, how to provide a plug side frame elasticity testing device and a method for using the same to screen battery plug side frames is a problem that those skilled in the art urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a plug side frame elasticity testing device and a method for screening battery plug side frames using the same, which can detect the elastic adjustment range of the plug side frames and also can screen out the plug side frames used with battery cells, thereby avoiding the problem of unreasonable pole group assembly caused by the inapplicability of the plug side frames.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a plug edge frame elasticity testing device, comprising:

[0007] A base, wherein two ends of the base are respectively fixed with vertical plates, one side end of the base is provided with a side plate, and a scale is fixed on the top of the side plate;

[0008] A pressure sensor, the pressure sensor is located between the two vertical plates and is fixedly connected to the vertical plate at one end, and a pressure measuring plate is fixed on the pressure sensor;

[0009] A sliding pressure plate is arranged in parallel with the pressure measuring plate, one end of the sliding pressure plate away from the pressure measuring plate is rotatably connected to an adjusting rod, the adjusting rod is threadedly connected to the vertical plate at the other end, a pole group and a plug edge frame are placed between the sliding pressure plate and the pressure measuring plate, and the distance between the sliding pressure plate and the pressure measuring plate is obtained by referring to a scale.

[0010] The beneficial effects of the present invention are as follows: a plug edge frame and a pole group are placed between the pressure measuring plate and the sliding pressure plate, and the plug edge frame is squeezed by reducing the distance between the pressure measuring plate and the sliding pressure plate until the plug edge frame is damaged. At this time, the reduced distance between the pressure measuring plate and the sliding pressure plate is the elastic adjustment range of the plug edge frame. At the same time, a pressure sensor can be used to detect the maximum pressure that the plug edge frame can withstand. The reduced distance between the pressure measuring plate and the sliding pressure plate is measured with a ruler, which is easy to use.

[0011] Preferably, a pressure gauge is fixedly connected to the side plate, and an electrical signal of the pressure gauge is connected to a pressure sensor.

[0012] The resulting technical effect is that the pressure gauge can directly obtain the test value of the pressure sensor, thereby obtaining the bearing pressure of the object to be tested.

[0013] Preferably, the bottom surface of the sliding pressure plate is slidably connected to the top surface of the base, and a transition sleeve is provided on the side of the sliding pressure plate away from the pressure measuring plate. A connecting head is rotatably connected inside the transition sleeve, and the connecting head is fixed to the end of the adjusting rod.

[0014] The resulting technical effect is that the sliding pressure plate can move smoothly laterally, and the threaded adjustment of the adjusting rod is used to cause the sliding pressure plate to move, thereby achieving a predetermined extrusion effect, and the connecting head ensures that the rotation of the adjusting rod will not cause axial displacement in the transition sleeve.

[0015] Preferably, the adjusting rod has a threaded section, a screw hole is provided on the vertical plate at one end away from the pressure sensor, the adjusting rod is threadedly connected in the screw hole, an operating handle is fixed to the end of the adjusting rod away from the connecting head, and a locking nut is provided on the corresponding threaded section of the adjusting rod.

[0016] The resulting technical effect is: the threaded section cooperates with the screw hole to achieve the change of axial displacement, the operating handle is convenient for rotating the adjusting rod, and the locking nut can lock the position of the adjusting rod on the vertical plate to prevent the adjusting rod from rotating at will.

[0017] Preferably, one side end of the sliding pressure plate and the pressure measuring plate are both close to the scale.

[0018] The resulting technical effect is that one side end of the sliding pressure plate and the pressure measuring plate are close to the scale, which is convenient for parameter acquisition to obtain accurate measurement data.

[0019] The present invention also discloses a method for screening battery plugging racks using the above-mentioned testing device, which comprises the following steps:

[0020] Step 1: Obtain the internal width of a battery cell of the plugging rack to be used, recorded as W;

[0021] Step 2: Add a certain number of thin plates into the single cell of step 1 until the single cell is deformed;

[0022] Step 3: Take out all the thin plates in step 2 and place them between the sliding platen and the pressure measuring plate of the test device, adjust the distance between the sliding platen and the pressure measuring plate until the width is W, and record the pressure at this time as P;

[0023] Step 4: Assemble the plugging frame and the electrode group with the smallest thickness in the battery model to be assembled into a component, put it between the sliding pressure plate and the pressure measuring plate of the test device, and record the component width W0 when the pressure is zero;

[0024] Step 5: Compare the values ​​of W0 and W. If W0 < W, it means that the thickness of the plugging frame is not enough and the purpose of tightly assembling the single grid cannot be achieved after assembly. It is necessary to replace a thicker plugging frame and repeat step 4 until W0 > W.

[0025] Step 6: Slowly increase the pressure on the component by sliding the pressure plate until the plug edge frame is damaged, and record the pressure P0 and the component width reading W1 at this time. If P0>P, the difference between W0 and W1 is the maximum elastic adjustment range of the plug edge frame, and continue to the next step; if P0<P, it means that the compressive strength of this plug edge frame is insufficient, and a new type of plug edge frame needs to be replaced, and return to step 4 until P0>P;

[0026] Step 7: Place the thinnest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the testing device, slowly increase the pressure to P0, and record the electrode group width reading W2 at this time;

[0027] Step 8: Place the thickest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the detection device, slowly increase the pressure to P0, and record the electrode group width reading W3 at this time;

[0028] Step nine: If the difference between W0 and W1 is greater than the difference between W3 and W2, select a suitable plugging rack; if the difference between W0 and W1 is less than the difference between W3 and W2, return to step four and start again until the difference between W0 and W1 is greater than the difference between W3 and W2.

[0029] The beneficial effects of the present invention are as follows: firstly, the internal width of a single cell is measured, and a certain number of thin plates are filled until deformation occurs. This number of thin plates must exert a certain pressure on the side wall of the single cell, which is equal to P in step three. The smallest thin plate of this model is assembled with the side frame into an assembly. If the assembly width does not reach the internal width of the single cell, it proves that the side frame is too small and unsuitable. If it is greater than the internal width of the single cell, the next step of the side frame compression test is required. Since a certain number of thin plates exert pressure on the single cell in the early stage, this pressure value is compared with the pressure value when the side frame is damaged. If the pressure value when the side frame is damaged is less than the pressure of the single cell filled with thin plates in the early stage, it proves that the side frame is not strong enough in pressure resistance. The side frame is replaced continuously until the pressure resistance meets the requirements. At the same time, it is also necessary to consider that the deformation of the side frame is greater than the deformation of the electrode group, so as to finally obtain a suitable side frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a structural diagram of a plug edge frame elasticity testing device.

[0031] 1 base, 2 vertical plate, 3 side plate, 4 scale, 5 pressure sensor, 6 pressure measuring plate, 7 sliding pressure plate, 8 adjustment rod, 9 pole group, 10 plug side frame, 11 pressure gauge, 12 transition sleeve, 13 locking nut, 14 operating handle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See the attached Figure 1 According to an embodiment of the present invention, a plug edge frame elasticity testing device comprises:

[0034] A base 1, with vertical plates 2 fixed to both ends of the base 1, a side plate 3 is provided on one side end of the base 1, with both ends of the side plate extending to the vertical plates and fixed thereto, and a scale 4 fixed to the top of the side plate 3;

[0035] A pressure sensor 5, the pressure sensor 5 is located between the two vertical plates and is fixedly connected to the vertical plate 2 at one end, and a pressure measuring plate 6 is fixed on the pressure sensor 5;

[0036] Sliding pressure plate 7, the sliding pressure plate 7 is arranged in parallel with the pressure measuring plate 6, one end of the sliding pressure plate 7 away from the pressure measuring plate 6 is rotatably connected with an adjusting rod 8, the adjusting rod 8 is threadedly connected to the vertical plate at the other end, a pole group 9 and a plug edge frame 10 are placed between the sliding pressure plate 7 and the pressure measuring plate 6, and the distance between the sliding pressure plate 7 and the pressure measuring plate 6 is obtained by referring to the scale.

[0037] The elastic adjustment range of the plugging frame is completed by the following steps:

[0038] Before the test begins, place the sliding plate against the pressure measuring plate, ensure that the pressure value of the pressure measuring plate is zero, and record the scale size of the sliding plate;

[0039] Adjust the distance between the sliding plate and the pressure test by operating the handle until the pole group and the plug edge frame can be placed loosely in it;

[0040] Slowly shake the operating handle to reduce the distance between the sliding plate and the pressure measuring plate until the pressure gauge starts to display readings, and record the scale reading H1 at this time;

[0041] Continue to slowly shake the operating handle to reduce the distance between the sliding plate and the pressure measuring plate until the plug edge frame is damaged. Record the pressure gauge reading P and the scale reading H2 at this time.

[0042] The difference between H1 and H2 is the elastic adjustment range of the plug edge frame, and P is the maximum pressure that the plug edge frame can withstand.

[0043] In other embodiments, a pressure gauge 11 is fixedly connected to the side plate 3, and the pressure gauge 11 is electrically connected to the pressure sensor 5, so that the pressure gauge can intuitively obtain the detected pressure value.

[0044] In other specific embodiments, the bottom surface of the sliding pressure plate 7 is slidably connected to the top surface of the base 1, and a transition sleeve 12 is provided on the side of the sliding pressure plate 7 away from the pressure measuring plate 6. A connecting head is rotatably connected inside the transition sleeve 12, and the connecting head is fixed to the end of the adjusting rod 8.

[0045] The rotation of the adjusting rod will only push the sliding pressure plate, and the sliding pressure plate will not rotate.

[0046] In some other embodiments, the adjusting rod 8 has a threaded section, and a screw hole is opened on the vertical plate 2 at the end away from the pressure sensor 5. The adjusting rod 8 is threadedly connected in the screw hole, and an operating handle 14 is fixed to the end of the adjusting rod 8 away from the connecting head. A locking nut 13 is provided on the corresponding threaded section of the adjusting rod 8. The locking nut can lock the position of the adjusting rod, and the locking nut can be abutted against the vertical plate.

[0047] In some other specific embodiments, one side end of the sliding pressure plate 7 and the pressure measuring plate 6 are both close to the scale 4, so as to accurately obtain the position and size of the sliding pressure plate and the pressure side plate.

[0048] The present invention also discloses a method for screening battery plugging racks using the above-mentioned testing device, which comprises the following steps:

[0049] Step 1: Obtain the internal width of a battery cell of the plugging rack to be used, recorded as W;

[0050] Step 2: Add a certain number of thin plates to the single cell of step 1 until the single cell is deformed. This deformation can be understood as the critical state of the single cell deformation;

[0051] Step 3: Take out all the thin plates in step 2 and place them between the sliding platen and the pressure measuring plate of the test device, adjust the distance between the sliding platen and the pressure measuring plate until the width is W, and record the pressure at this time as P; this pressure is the pressure value before the single cell deformation in the early stage;

[0052] Step 4: Assemble the plugging frame and the electrode group with the smallest thickness in the battery model to be assembled into a component, put it between the sliding pressure plate and the pressure measuring plate of the test device, and record the component width W0 when the pressure is zero;

[0053] Step 5: Compare the values ​​of W0 and W. If W0 < W, it means that the thickness of the plugging frame is not enough and the purpose of tightly assembling the single grid cannot be achieved after assembly. It is necessary to replace a thicker plugging frame and repeat step 4 until W0 > W.

[0054] Step 6: Slowly increase the pressure on the component by sliding the pressure plate until the plug edge frame is damaged, and record the pressure P0 and the component width reading W1 at this time. If P0>P, the difference between W0 and W1 is the maximum elastic adjustment range of the plug edge frame, and continue to the next step; if P0<P, it means that the compressive strength of this plug edge frame is insufficient, and a new type of plug edge frame needs to be replaced, and return to step 4 until P0>P;

[0055] Step 7: Place the thinnest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the testing device, slowly increase the pressure to P0, and record the electrode group width reading W2 at this time;

[0056] Step 8: Place the thickest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the detection device, slowly increase the pressure to P0, and record the electrode group width reading W3 at this time;

[0057] Step nine: If the difference between W0 and W1 is greater than the difference between W3 and W2, select a suitable plugging rack; if the difference between W0 and W1 is less than the difference between W3 and W2, return to step four and start again until the difference between W0 and W1 is greater than the difference between W3 and W2.

[0058] The present invention can select suitable plugging racks to adapt to storage battery cells of different models.

[0059] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plug edge frame elasticity testing device, characterized in that: include: A base (1), wherein two ends of the base (1) are respectively fixed with vertical plates (2), one side end of the base (1) is provided with a side plate (3), and a scale (4) is fixed on the top of the side plate (3); A pressure sensor (5), the pressure sensor (5) being located between the two vertical plates and fixedly connected to the vertical plate (2) at one end, and a pressure measuring plate (6) being fixed on the pressure sensor (5); A sliding pressure plate (7), the sliding pressure plate (7) and the pressure measuring plate (6) are arranged in parallel, one end of the sliding pressure plate (7) away from the pressure measuring plate (6) is rotatably connected to an adjusting rod (8), the adjusting rod (8) is threadedly connected to the vertical plate at the other end, a pole group (9) and a plug edge frame (10) are placed between the sliding pressure plate (7) and the pressure measuring plate (6), and the distance between the sliding pressure plate (7) and the pressure measuring plate (6) is obtained by referring to a scale.

2. A plug edge frame elasticity testing device according to claim 1, characterized in that: A pressure gauge (11) is fixedly connected to the side plate (3), and the pressure gauge (11) is electrically connected to a pressure sensor (5).

3. A plug edge frame elasticity testing device according to claim 1, characterized in that: The bottom surface of the sliding pressure plate (7) is slidably connected to the top surface of the base (1), and a transition sleeve (12) is provided on the side of the sliding pressure plate (7) away from the pressure measuring plate (6). A connecting head is rotatably connected inside the transition sleeve (12), and the connecting head is fixed to the end of the adjusting rod (8).

4. A plug edge frame elasticity testing device according to claim 3, characterized in that: The adjusting rod (8) has a threaded section, a screw hole is provided on the vertical plate (2) at the end away from the pressure sensor (5), the adjusting rod (8) is threadedly connected in the screw hole, an operating handle (14) is fixed to the end of the adjusting rod (8) away from the connector, and a locking nut (13) is provided on the corresponding threaded section of the adjusting rod (8).

5. The plug edge frame elasticity testing device according to claim 1, characterized in that: One side end of the sliding pressure plate (7) and the pressure measuring plate (6) are both close to the scale (4).

6. A method for screening battery plugging racks using the testing device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Obtain the internal width of a battery cell of the plugging rack to be used, recorded as W; Step 2: Add a certain number of thin plates into the single cell of step 1 until the single cell is deformed; Step 3: Take out all the thin plates in step 2 and place them between the sliding platen and the pressure measuring plate of the test device, adjust the distance between the sliding platen and the pressure measuring plate until the width is W, and record the pressure at this time as P; Step 4: Assemble the plugging frame and the electrode group with the smallest thickness in the battery model to be assembled into a component, put it between the sliding pressure plate and the pressure measuring plate of the test device, and record the component width W0 when the pressure is zero; Step 5: Compare the values ​​of W0 and W. If W0 < W, it means that the thickness of the plugging frame is not enough and the purpose of tightly assembling the single grid cannot be achieved after assembly. It is necessary to replace a thicker plugging frame and repeat step 4 until W0 > W. Step 6: Slowly increase the pressure on the component by sliding the pressure plate until the plug edge frame is damaged, and record the pressure P0 and the component width reading W1 at this time. If P0>P, the difference between W0 and W1 is the maximum elastic adjustment range of the plug edge frame, and continue to the next step; if P0<P, it means that the compressive strength of this plug edge frame is insufficient, and a new type of plug edge frame needs to be replaced, and return to step 4 until P0>P; Step 7: Place the thinnest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the testing device, slowly increase the pressure to P0, and record the electrode group width reading W2 at this time; Step 8: Place the thickest electrode group in the battery model to be assembled between the sliding pressure plate and the pressure measuring plate of the detection device, slowly increase the pressure to P0, and record the electrode group width reading W3 at this time; Step nine: If the difference between W0 and W1 is greater than the difference between W3 and W2, select a suitable plugging rack; if the difference between W0 and W1 is less than the difference between W3 and W2, return to step four and start again until the difference between W0 and W1 is greater than the difference between W3 and W2.

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