Horizontal new energy battery expansion testing machine

Abstract

The utility model discloses a horizontal new energy battery expansion testing machine, which relates to the technical field of battery expansion testing and comprises a top plate, a first fixing plate is mounted at the left part of the upper end of the top plate, a second fixing plate is mounted at the right part of the upper end of the top plate, and a pressure sensor is mounted at the right end of the first fixing plate. An electric cylinder is installed at the right end of the second fixing plate, the output end of the electric cylinder extends to the left side of the second fixing plate, clamping plates are installed at the output end of the electric cylinder and the right end of the pressure sensor, adjusting components are installed at the upper ends of the two clamping plates, and the two adjusting components are distributed in a bilateral symmetry mode; the upper ends of the two clamping plates are each provided with two sliding grooves distributed front and back, and the front ends and the rear ends of the two clamping plates are each provided with a rectangular groove. According to the utility model, through the arrangement of the adjusting part, a longer battery can be conveniently clamped, the reliability of detection data is improved, other detection equipment does not need to be replaced, and the detection cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery expansion testing, in particular to a horizontal new energy battery expansion testing machine. Background Art

[0002] Lithium-ion batteries have expansion problems during the charge and discharge cycle. On the one hand, during the charge and discharge process, the release and embedding of lithium ions will cause the material to expand or shrink, and be accompanied by stress changes; on the other hand, as the cycle progresses, the thickening of the SEI film inside the battery cell, the gas production accompanied by the electrochemical reaction, the swelling of the diaphragm, the lithium precipitation caused by extreme conditions, or the co-embedding of solvated ions into the material will cause the pole piece to undergo continuous changes in strain and stress. The expansion will not change significantly in a short period of time, but will produce a cumulative effect with the electrochemical reaction throughout the battery's life cycle, thereby affecting the battery's cycle life. In addition, the expansion of the battery further involves the design reliability and safety of the module. In severe cases, it may even cause damage to the battery cell shell and structural parts, directly affecting the safety of the battery. Therefore, by developing an expansion test device, it is possible to reproduce the battery cell charge and discharge process and the expansion changes under different operating conditions throughout the life cycle, providing a reference and basis for the subsequent development, design and use of batteries.

[0003] The prior art (publication number: CN 219348031 U) discloses a clamp and an expansion force testing device, which belong to the field of battery testing equipment; the clamp comprises: a first plate body and a second plate body arranged opposite to each other; a bearing structure, wherein the first plate body and the second plate body are provided with a bearing structure on one side close to the battery cell; the bearing structure comprises a first support plate, an elastic member and a second support plate, wherein the elastic member is arranged between the first support plate and the second support plate; the first plate body and the second plate body are connected to the second support plate, and the first support plate is used to connect to the battery cell.

[0004] Although the above patent can solve the problem of poor performance and life of battery cells caused by uneven distribution of expansion force, it has the following disadvantages. When testing longer batteries, the first plate and the second plate will not completely clamp the outer surface of the battery, which will affect the pressure sensor's inability to accurately record the actual value of the battery expansion force, resulting in inaccurate data recording, thereby affecting the analysis and evaluation of the battery expansion force, reducing the reliability of the test data, requiring the replacement of other testing equipment, and increasing the test cost. Further improvement is needed. For this reason, we propose a horizontal new energy battery expansion tester. Utility Model Content

[0005] The main purpose of the utility model is to provide a horizontal new energy battery expansion testing machine, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A horizontal new energy battery expansion testing machine comprises a top plate, a first fixing plate is installed on the left upper end of the top plate, a second fixing plate is installed on the right upper end of the top plate, a pressure sensor is installed on the right end of the first fixing plate, an electric cylinder is installed on the right end of the second fixing plate, the output end of the electric cylinder extends to the left side of the second fixing plate, the output end of the electric cylinder and the right end of the pressure sensor are both installed with clamping plates, the upper ends of the two clamping plates are both installed with adjusting components, the two adjusting components are symmetrically distributed on the left and right, the upper ends of the two clamping plates are each provided with two front-to-back distributed slide grooves, the front and rear ends of the two clamping plates are both provided with rectangular grooves, the adjusting component extends into the rectangular groove through the front and rear slide grooves, and the adjusting component is provided with auxiliary components.

[0008] Preferably, the adjusting component includes a bearing seat, two of which are provided and distributed front to back, a rotatable forward and reverse threaded rod is provided between the two bearing seats, the front ends of the forward and reverse threaded rod extend to the front side of the front bearing seat, the outer surface thread sleeves of the forward and reverse threaded rod are provided with two moving blocks symmetrically distributed front to back, the lower ends of the two moving blocks are respectively provided with moving plates, the upper ends of the two moving plates are provided with grooves, the grooves extend to the lower end of the moving plate, and the lower end of the moving plate is movably contacted with the lower end of the top plate.

[0009] Preferably, the two moving blocks are respectively located in the front and rear sliding grooves, and the left end and the right end of the moving block are movably connected to the left wall and the right wall of the sliding groove respectively.

[0010] Preferably, the two movable plates are respectively located in the front and rear rectangular grooves, and the lower ends of the movable plates are in movably contact with the upper end of the top plate.

[0011] Preferably, the auxiliary component includes a vertical plate, which is arranged in the groove, and two guide columns symmetrically distributed front and back are installed on the vertical plate, and a screw is commonly arranged between the two guide columns, one end of the screw is movably connected to the vertical plate, and the other end of the screw is threadedly inserted into the movable plate, and the end of the guide column away from the vertical plate is movably inserted into the movable plate.

[0012] Preferably, two guide rods symmetrically distributed front and back are installed on the left end of the left clamping plate, the left ends of the two guide rods are movably inserted into the left side of the first fixed plate, and the lower ends of the two clamping plates are movably contacted with the upper end of the top plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By setting the adjustment component, it is convenient to clamp longer batteries. When the battery is longer, the positive and negative threaded rods are rotated, and the positive and negative threaded rods drive the two moving blocks to move away from each other, and the two moving blocks drive the two moving plates to move away from each other, so that the moving plates can clamp the left and right surfaces of the battery, so that the expansion force generated by the test can be transmitted to the pressure sensor through the moving plate and the clamping plate, so that the pressure sensor can record the actual value of the battery expansion force, which is convenient for the subsequent analysis and evaluation of the battery expansion force, improves the reliability of the test data, does not need to replace other testing equipment, and reduces the test cost;

[0015] 2. The accuracy of detection can be further improved by setting auxiliary components. After the adjustment is completed, the screw is rotated to drive the vertical plate close to the surface of the battery, so that the device can completely clamp the outer surface of the battery, avoiding a certain gap distance between the moving plate and the battery, making it convenient for the pressure sensor to record the value of the battery expansion force and improve the accuracy of data recording. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the entire structure proposed in this embodiment;

[0017] Figure 2 It is a structural schematic diagram of this embodiment;

[0018] Figure 3 It is a structural schematic diagram of this embodiment;

[0019] Figure 4 It is a schematic diagram of the structure in this embodiment.

[0020] In the figure: 1. base; 2. top plate; 3. first fixed plate; 4. second fixed plate; 5. electric cylinder; 6. pressure sensor; 7. guide rod; 8. clamping plate; 9. rectangular groove; 10. adjustment component; 11. slide groove; 12. auxiliary component; 101. bearing seat; 102. positive and negative threaded rod; 103. moving block; 104. moving plate; 105. groove; 121. vertical plate; 122. guide column; 123. screw. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-Figure 4 As shown, a horizontal new energy battery expansion tester includes a top plate 2, a first fixing plate 3 is installed on the left upper end of the top plate 2, a second fixing plate 4 is installed on the right upper end of the top plate 2, a pressure sensor 6 is installed on the right end of the first fixing plate 3, and the pressure sensor 6 is used to detect the battery expansion force value, an electric cylinder 5 is installed on the right end of the second fixing plate 4, and the output end of the electric cylinder 5 extends to the left side of the second fixing plate 4, and the output end of the electric cylinder 5 and the right end of the pressure sensor 6 are both installed with a clamping plate 8, and the upper ends of the two clamping plates 8 are both installed with an adjusting component 10, and the two adjusting components 10 are symmetrically distributed on the left and right, and the upper ends of the two clamping plates 8 are each provided with two front-to-back distributed slide grooves 11, and the front and rear ends of the two clamping plates 8 are both provided with rectangular grooves 9, and the adjusting component 10 extends into the rectangular groove 9 through the front and rear slide grooves 11, and an auxiliary component 12 is arranged on the adjusting component 10.

[0025] When the battery size is longer, the longer battery can be conveniently clamped by the adjusting component 10, and the specific structure is as follows: the adjusting component 10 includes a bearing seat 101, two bearing seats 101 are provided and are distributed front and back, a rotatable positive and negative threaded rod 102 is commonly provided between the two bearing seats 101, the front end of the positive and negative threaded rod 102 extends to the front side of the front bearing seat 101, and the outer surface thread sleeve of the positive and negative threaded rod 102 is provided with two moving blocks 103 symmetrically distributed front and back, and the lower ends of the two moving blocks 103 are both installed with moving plates 104, and the upper ends of the two moving plates 104 are both provided with grooves 105, and the grooves 105 extend to the lower ends of the moving plates 104. The lower end of the battery 4 is in active contact with the lower end of the top plate 2, the two moving blocks 103 are respectively located in the front and rear slide grooves 11, the left and right ends of the moving blocks 103 are respectively movably connected with the left and right walls of the slide groove 11, the two moving plates 104 are respectively located in the front and rear rectangular grooves 9, the lower end of the moving plate 104 is in active contact with the upper end of the top plate 2, the adjusting component 10 enables the expansion force generated by the longer part of the battery to be transmitted to the pressure sensor 6 through the moving plate 104 and the clamping plate 8, so that the pressure sensor 6 can record the actual value of the battery expansion force, which is convenient for subsequent analysis and evaluation of the battery expansion force, improves the reliability of the detection data, does not need to replace other detection equipment, and reduces the detection cost.

[0026] Since the movable plate 104 and the clamping plate 8 are not on the same horizontal line, in order to avoid a certain gap distance between the movable plate 104 and the battery, the gap is filled by the auxiliary component 12, and the specific structure is as follows: the auxiliary component 12 includes a vertical plate 121, the vertical plate 121 is arranged in the groove 105, and two guide pillars 122 symmetrically distributed front and back are installed on the vertical plate 121, and a screw 123 is commonly arranged between the two guide pillars 122, one end of the screw 123 is movably connected to the vertical plate 121, and the other end of the screw 123 is threadedly inserted into the movable plate 104, and one end of the guide pillar 122 away from the vertical plate 121 is movably inserted into the movable plate 104. After the adjustment is completed, the four screws 123 are rotated to drive the four vertical plates 121 to approach the surface of the battery respectively, so that the device can completely clamp the outer surface of the battery.

[0027] Two guide rods 7 symmetrically distributed front and back are installed at the left end of the left clamping plate 8. The left ends of the two guide rods 7 are movably inserted into the left side of the first fixed plate 3. The guide rods 7 are used to guide the movement of the first fixed plate 3. The lower ends of the two clamping plates 8 are in movably contact with the upper end of the top plate 2.

[0028] The horizontal new energy battery expansion tester proposed by the utility model, when in use, places the battery between the two clamping plates 8, controls the electric cylinder 5 to drive the clamping plate 8 on the right side close to the battery, so that the battery is fixed between the two clamping plates 8, and performs charging and discharging processes on the battery. The expansion force generated by the battery is transmitted to the pressure sensor 6, and then the data is analyzed. By measuring the expansion force of the battery, the performance and safety of the battery can be evaluated. When the battery size is longer, the positive and negative threaded rods 102 are rotated, and the positive and negative threaded rods 102 drive the two moving blocks 103 to move away from each other, and the two moving blocks 103 drive the two moving plates 104 to move away from each other, so that the moving plates 104 can clamp the left and right surfaces of the battery, so that the expansion force generated by the test can be transmitted to the pressure sensor 6 through the moving plates 104 and the clamping plates 8. After the adjustment is completed, the screw 123 is rotated to drive the vertical plate 121 close to the surface of the battery, so that the device can completely clamp the outer surface of the battery, avoiding a certain gap distance between the moving plate 104 and the battery.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A horizontal new energy battery expansion testing machine, comprising a top plate (2), characterized in that: A first fixing plate (3) is installed at the left upper end of the top plate (2), a second fixing plate (4) is installed at the right upper end of the top plate (2), a pressure sensor (6) is installed at the right end of the first fixing plate (3), an electric cylinder (5) is installed at the right end of the second fixing plate (4), the output end of the electric cylinder (5) extends to the left side of the second fixing plate (4), the output end of the electric cylinder (5) and the right end of the pressure sensor (6) are both installed with clamping plates (8), the upper ends of the two clamping plates (8) are both installed with adjustment components (10), the two adjustment components (10) are symmetrically distributed on the left and right, the upper ends of the two clamping plates (8) are each provided with two front-to-back sliding grooves (11), the front and rear ends of the two clamping plates (8) are both provided with rectangular grooves (9), the adjustment component (10) extends into the rectangular groove (9) through the two front and rear sliding grooves (11), and the adjustment component (10) is provided with an auxiliary component (12).

2. The horizontal new energy battery expansion testing machine according to claim 1 is characterized in that: The adjusting component (10) comprises a bearing seat (101), wherein two bearing seats (101) are provided and are distributed front to back, a rotatable forward and reverse threaded rod (102) is provided between the two bearing seats (101), the front end of the forward and reverse threaded rod (102) extends to the front side of the front bearing seat (101), the outer surface of the forward and reverse threaded rod (102) is threadedly sleeved with two moving blocks (103) distributed symmetrically front to back, the lower ends of the two moving blocks (103) are both installed with moving plates (104), the upper ends of the two moving plates (104) are both provided with grooves (105), the grooves (105) extend to the lower ends of the moving plates (104), and the lower ends of the moving plates (104) are in active contact with the lower end of the top plate (2).

3. The horizontal new energy battery expansion testing machine according to claim 2 is characterized in that: The two moving blocks (103) are respectively located in the front and rear sliding grooves (11), and the left end and the right end of the moving block (103) are respectively movably connected to the left wall and the right wall of the sliding groove (11).

4. The horizontal new energy battery expansion testing machine according to claim 2 is characterized in that: The two movable plates (104) are respectively located in the front and rear rectangular grooves (9), and the lower ends of the movable plates (104) are in movable contact with the upper end of the top plate (2).

5. The horizontal new energy battery expansion testing machine according to claim 2 is characterized in that: The auxiliary component (12) comprises a vertical plate (121), wherein the vertical plate (121) is arranged in the groove (105), and two guide pillars (122) are installed on the vertical plate (121) and are symmetrically distributed in the front and rear directions. A screw rod (123) is commonly arranged between the two guide pillars (122), and one end of the screw rod (123) is movably connected to the vertical plate (121), and the other end of the screw rod (123) is threadedly inserted into the movable plate (104), and one end of the guide pillar (122) away from the vertical plate (121) is movably inserted into the movable plate (104).

6. The horizontal new energy battery expansion testing machine according to claim 1 is characterized in that: The left end of the left clamping plate (8) is equipped with two guide rods (7) symmetrically distributed front and back, the left ends of the two guide rods (7) are movably inserted into the left side of the first fixed plate (3), and the lower ends of the two clamping plates (8) are movably contacted with the upper end of the top plate (2).

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