Energy storage PACK module test pressure head

Abstract

The utility model discloses an energy storage PACK module test pressure head, which comprises a pressing part, a shaft core, a first extrusion part, a second extrusion part, a plurality of expansion sheets and a shell, the pressing part is arranged at the top of the shaft core, the first extrusion part and the second extrusion part are sleeved on the shaft core in a sliding manner along the direction far away from the pressing part, the first extrusion part faces the pressing part, and the second extrusion part faces the shell. The first extrusion part is connected with the second extrusion part, the multiple expansion pieces are arranged around the shaft core, one ends of the multiple expansion pieces are located in the second extrusion part, the other ends of the multiple expansion pieces are located outside the second extrusion part, the first extrusion part, the second extrusion part and the multiple expansion pieces are sleeved with the shell, and the end, close to the pressing part, of the shell is connected with the pressing part; one ends of the plurality of expansion sheets outside the second extrusion part are outside the shell; the pressing part is pressed, the pressing part applies force to the first extrusion part, the first extrusion part slides along the shaft core to extrude the second extrusion part, the second extrusion part slides along the shaft core under extrusion of the first extrusion part and extrudes the multiple expansion pieces, and the lengths, extending out of the shell, of the multiple expansion pieces are increased.

Description

Technical Field

[0001] This utility model relates to the field of energy storage PACK modules, specifically to a test pressure head for energy storage PACK modules. Background Technology

[0002] Energy storage PACK modules require wiring tests before leaving the factory. Current wiring methods primarily use screws and cylinder assemblies to secure the wires to the energy storage PACK module. However, screws can strip after prolonged use, making this method inconvenient. The cylinder assembly method involves securing the wires to a cylinder, which then drives the wires to connect to the energy storage PACK module. However, the large size and high cost of cylinder assemblies limit their widespread use. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a test pressure head for energy storage PACK modules.

[0004] The objective of this utility model is achieved through the following solution:

[0005] A test head for an energy storage PACK module includes: a pressing part, a shaft core, a first extrusion part, a second extrusion part, multiple expansion plates, and a housing. The pressing part is fixed to the top of the shaft core. The first extrusion part and the second extrusion part are slidably sleeved on the shaft core in a direction away from the pressing part. The first extrusion part faces the pressing part and is connected to the second extrusion part. The multiple expansion plates are arranged around the shaft core to enclose it. One end of the multiple expansion plates is confined inside the second extrusion part, and the other end of the multiple expansion plates is outside the second extrusion part. The housing is sleeved on the first extrusion part, the second extrusion part, and the multiple expansion plates. The end of the housing near the pressing part is connected to the pressing part, and the end of the multiple expansion plates outside the second extrusion part is also outside the housing. The housing wall is also provided with through holes. When the pressing part is pressed, the pressing part applies force to the first extrusion part. The first extrusion part slides along the shaft core to extrude the second extrusion part. The second extrusion part slides along the shaft core under the extrusion of the first extrusion part to extrude the multiple expansion plates. The length of the multiple expansion plates extending out of the housing increases.

[0006] In one embodiment, the pressing part includes a mounting base, a pressing rod, a connecting member, and a top shaft. The mounting base is connected to the outer shell and has a mounting position. The pressing rod includes a connecting rod and a pressing handle. The connecting rod is located in the mounting position and one end of the connecting rod is rotatably connected to the mounting base. The pressing handle is located at the other end of the connecting rod. The connecting member is located in the mounting position and one end of the connecting member is rotatably connected to the other end of the connecting rod. The other end of the connecting member is rotatably connected to one end of the top shaft. The other end of the top shaft passes through the mounting base and can move relative to the mounting base towards or away from the first pressing part.

[0007] In one embodiment, the first pressing part includes a first pressing sleeve and a first elastic element. The first pressing sleeve is sleeved on the shaft core, one end of the first pressing sleeve faces the top shaft, the other end of the first pressing sleeve is connected to the second pressing part, and a limiting groove is provided on the outer periphery of the first pressing sleeve. The first elastic element is sleeved on the first pressing sleeve and located in the limiting groove.

[0008] In one embodiment, the second pressing part includes a retaining ring, a second pressing sleeve, a pressing shaft, a second elastic element, and a protective shell. The retaining ring is sleeved on one end of the second pressing sleeve. The second pressing sleeve is sleeved on the shaft core, and the end with the retaining ring is connected to the first pressing sleeve. The pressing shaft includes a mounting shaft and a pressing body. One end of the mounting shaft passes through the second pressing sleeve, and the pressing body is located at the other end of the mounting shaft. The second elastic element is sleeved on the mounting shaft, and the second elastic element is limited between the second pressing sleeve and the pressing body. The protective shell is sleeved outside the pressing shaft and is connected to the second pressing sleeve. One end of a plurality of expansion plates is located inside the protective shell, and the other end of the plurality of expansion plates extends out of the protective shell.

[0009] In one embodiment, a truncated cone is formed at the end of the pressing body away from the mounting shaft, and the diameter of the truncated cone gradually decreases along the direction away from the second elastic element; the inner surface of each expansion piece near the end of the truncated cone is provided on a curved surface adapted to the outer wall of the truncated cone, and multiple expansion pieces are provided at one end of the protective shell and are attached to the surface of the truncated cone.

[0010] In one embodiment, the shaft core includes a core body and a connecting nut, with the connecting nut located on the top of the core body, and the core body connected to the pressing part via the connecting nut.

[0011] In one embodiment, the outer wall of the housing is further provided with a wiring terminal, and the wiring terminal is provided with a wiring hole, the wiring hole being adapted to the position of the through hole.

[0012] In one embodiment, the outer wall of the pressing handle is provided with a plurality of pressing grooves, which are arranged sequentially along the length of the pressing handle.

[0013] In one embodiment, both the first elastic element and the second elastic element are springs.

[0014] Compared with the prior art, the present invention has at least the following advantages:

[0015] The test leads are connected to the wiring holes on the housing. After passing through the wiring holes, the test leads enter the housing through the through-holes, bringing them into contact with the expansion plates. Then, the pressing part is pressed down, which in turn presses against the first extrusion part, which in turn presses against the second extrusion part. This causes the second extrusion part to push multiple expansion plates out of the housing 6 and connect them to the energy storage PACK module, allowing for measurement of the energy storage PACK module. This eliminates the need for screws to secure the wires to the energy storage PACK module during testing, improving operational convenience. Furthermore, it eliminates the need for components connecting the test leads to a cylinder for connecting the energy storage PACK module, thus reducing operating costs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a front cross-sectional view of the test pressure head of the energy storage PACK module of this utility model;

[0018] Figure 2 This is a cross-sectional view of the front of the test pressure head of the energy storage PACK module of this utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the pressing part, the first extrusion part, the second extrusion part, and the expansion plate.

[0020] Figure 4 This is a schematic diagram of the pressing part, the first extrusion part, the second extrusion part, and the expansion plate.

[0021] Figure 5 This is a top view showing the expansion plate mating with the mandrel;

[0022] Figure 6 This is a three-dimensional structural diagram of the test pressure head of the energy storage PACK module of this utility model;

[0023] In the attached drawings, the reference numerals are as follows: 1. Pressing part; 11. Mounting base; 12. Pressing rod; 13. Connecting piece; 14. Top shaft; 111. Mounting position; 12. Pressing rod; 121. Connecting rod; 122. Pressing handle; 1221. Pressing groove;

[0024] 2. Shaft core; 21. Core body; 22. Connecting nut;

[0025] 3. First pressing part; 31. First pressing sleeve; 311. Limiting groove; 32. First elastic element;

[0026] 4. Second pressing part; 41. Snap ring; 42. Second pressing sleeve; 43. Pressing shaft; 431. Mounting shaft; 432. Pressing body; 4321. Frustum conical; 44. Second elastic element; 45. Protective shell;

[0027] 5. Expanding sheet;

[0028] 6. Outer casing; 61. Through hole; 62. Terminal; 621. Wiring hole. Detailed Implementation

[0029] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0030] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings:

[0033] like Figure 1 As shown, Figure 1This utility model provides a test head for an energy storage PACK module, comprising a pressing part 1, a shaft core 2, a first extrusion part 3, a second extrusion part 4, multiple expansion plates 5, and a housing 6. The pressing part 1 is fixed to the top of the shaft core 2. The first extrusion part 3 and the second extrusion part 4 are slidably sleeved on the shaft core 2 in a direction away from the pressing part 1. The first extrusion part 3 faces the pressing part 1 and is connected to the second extrusion part 4. Multiple expansion plates 5 are arranged around the shaft core 2 to enclose it. One end of each expansion plate 5 is confined inside the second extrusion part 4, and the other end of each expansion plate 5 is outside the second extrusion part 4. The housing 5 is sleeved on the first extrusion part 3, the second extrusion part 4, and the multiple expansion plates 5. The end of the housing 6 closest to the pressing part 1 is connected to the pressing part 1, and the ends of the multiple expansion plates 5 outside the second extrusion part 4 are also outside the housing 6. The wall of the housing 6 is also provided with a through hole 61.

[0034] In practical use, when the pressing part 1 is pressed, it applies force to the first pressing part 3, causing it to slide along the shaft core 2. This allows the first pressing part 3 to press against the second pressing part 4, which in turn is subjected to the force of the first pressing part 3, causing it to slide along the shaft core 2 and compress multiple expansion plates 5. The second pressing part 4 then pushes the portions of the expansion plates 5 inside the housing 6, increasing the length of the expansion plates 5 extending beyond the housing 6. This allows the expansion plates 5 to connect to the energy storage PACK module, fixing the test pressure head of the energy storage PACK module onto the module.

[0035] like Figure 2 As shown, Figure 2 This is a cross-sectional view of the front of the test head for the energy storage PACK module. The pressing part 1 includes a mounting base 11, a pressing rod 12, a connecting piece 13, and a top shaft 14. The mounting base 11 is connected to the outer shell 6 and has a mounting position 111. The pressing rod 12 includes a connecting rod 121 and a pressing handle 122. The connecting rod 121 is located in the mounting position 111 and one end of the connecting rod 121 is rotatably connected to the mounting base 11. The pressing handle 122 is located at the other end of the connecting rod 121. The connecting piece 13 is located in the mounting position 111 and one end of the connecting piece 13 is rotatably connected to the other end of the connecting rod 121. The other end of the connecting piece 13 is rotatably connected to one end of the top shaft 14. The other end of the top shaft 14 passes through the mounting base 11 and can move relative to the mounting base 11 in a direction away from or towards the first pressing part 3.

[0036] When in use, the user presses down the handle 122, causing the connecting rod 121 to rotate, thereby driving the entire pressure rod 12 to press down. After the pressure rod 12 is pressed down, it will push the connecting piece 13, which in turn pushes the top shaft 14. The top shaft 14 can then move towards the first pressing part 3 and simultaneously press the first pressing part 3, causing the first pressing part 3 to be subjected to force and press the second pressing part 4.

[0037] like Figure 2 and Figure 3 As shown, Figure 2 A cross-sectional view of the test pressure head for the energy storage PACK module from another perspective. Figure 3 The diagram shows the structure of the pressing part 1, the first extrusion part 3, the second extrusion part 4, and the expansion plate 5. The first extrusion part 3 includes a first pressing sleeve 31 and a first elastic element 32. The first pressing sleeve 31 is sleeved on the shaft core 2. One end of the first pressing sleeve 31 faces the top shaft 14, and the other end of the first pressing sleeve 31 is connected to the second extrusion part 4. A limiting groove 311 is provided on the outer periphery of the first pressing sleeve 31. The first elastic element 32 is sleeved on the first pressing sleeve 31 and located in the limiting groove 311.

[0038] When the top shaft 14 presses the first pressing sleeve 31, the first pressing sleeve 31 moves along the shaft core 2 toward the second pressing part 4 to press the second pressing part 4. When the top shaft 14 stops pressing the first pressing sleeve 31, the first pressing sleeve 31 is not subjected to the force of the top shaft 14, and the first elastic member 32 can reset the first pressing sleeve 31.

[0039] like Figure 4 As shown, Figure 4 The diagram shows the remaining structural components of the pressing part 1, the first extrusion part 3, the second extrusion part 4, and the expansion plate 5. Please review the diagram. Figure 2 The second pressing part 4 includes a retaining ring 41, a second pressing sleeve 42, a pressing shaft 43, a second elastic element 44, and a protective shell 45. The retaining ring 41 is sleeved on one end of the second pressing sleeve 42. The second pressing sleeve 42 is sleeved on the shaft core 2 and the end with the retaining ring 41 is connected to the first pressing sleeve 31. The pressing shaft 43 includes a mounting shaft 431 and a pressing body 432. One end of the mounting shaft 431 passes through the second pressing sleeve 42, and the pressing body 432 is located at the other end of the mounting shaft 431. The second elastic element 44 is sleeved on the mounting shaft 431 and is limited between the second pressing sleeve 42 and the pressing body 432. The protective shell 45 is sleeved on the outside of the pressing shaft 43 and is connected to the second pressing sleeve 42. One end of a plurality of expansion plates 5 is located inside the protective shell 45, and the other end of the plurality of expansion plates 5 extends out of the protective shell 45. The retaining ring 41 is used to better fix the first pressing sleeve 31 and the second pressing sleeve 42 together, and to prevent the first pressing sleeve 31 from falling off when it is squeezed and pushed against the second pressing sleeve 42.

[0040] Review Figure 1 and Figure 2 The pressing body 432 has a truncated cone 4321 formed at one end away from the mounting shaft 431, and the diameter of the truncated cone 4321 gradually decreases along the direction away from the second elastic member 44; the inner surface of each expansion piece 5 near the end of the truncated cone 4321 is provided on a curved surface adapted to the outer wall of the truncated cone 4321, and multiple expansion pieces 5 are provided at one end of the protective shell 45 and are attached to the surface of the truncated cone 4321.

[0041] Review Figure 1 and Figure 2 In specific implementation, when the first extrusion part 3 extrudes the second extrusion part 4, the first pressing sleeve 31 applies force to the second pressing sleeve 42. The first pressing sleeve 31 pushes the second pressing sleeve 42, so that the second pressing sleeve 42 can slide along the shaft core 2 towards the multiple expansion pieces 5. When the second pressing sleeve 42 slides along the shaft core 2, it will drive the entire second extrusion part 4 to slide in the direction of the expansion pieces 5. Since one end of the expansion piece 5 is inside the protective shell 45, when the second extrusion part 4 slides in the direction of the expansion piece 5, the protective shell 45 will drive the expansion piece 5 to move together, so that the multiple expansion pieces 5 extending out of the protective shell 45 will extend.

[0042] When the protective shell 45 contacts the bottom of the outer shell 6, the bottom of the outer shell 6 gives the protective shell 45 a reaction force. The protective shell 45 transmits the reaction force to the pressing body 432, causing the pressing body 432 to move away from the expansion plate 5 along the shaft core 432. The mounting shaft 431 connected to the pressing body 432 also slides away from the expansion plate 5 along the shaft core 2.

[0043] Multiple expansion plates 5 are arranged around the core 2 at one end outside the outer shell 6. When the energy storage PACK module test pressure head is not working, the multiple expansion plates 5 are radially distributed at one end outside the outer shell 6 and away from the core 2. When the pressing body 432 moves away from the expansion plates 5 along the core 2, as the diameter of the truncated cone 4321 gradually decreases along the direction away from the second elastic element 44, the curved surface of each expansion plate 5 in contact with the outer surface of the truncated cone 4321 will gradually slide along the area where the diameter of the truncated cone 4321 gradually increases. Meanwhile, the end of each expansion plate 5 outside the outer shell 6 gradually surrounds the core 2 from its radial distribution away from the core 2, and finally... Figure 5 As shown, each expansion plate 5 is positioned so that one end of the expansion plate 5 outside the housing 6 is attached to the shaft core 2. Thus, when one end of each expansion plate 5 outside the housing 6 is attached to the shaft core 2, the energy storage PACK module test head can be connected to the energy storage PACK module.

[0044] When the pressing body 432 moves away from the expansion piece 5 along the shaft core 432, it will compress the second elastic element 44. When the first pressing part 3 removes its pressure on the second pressing part 4, the second pressing part 4 returns to its original position under the action of the protective shell 45. Since the second elastic element 44 is compressed, the pressing body 432 returns to its original position under the elastic force of the second elastic element 44. The curved surface of each expansion piece 5 that contacts the outer surface of the truncated cone 4321 will gradually slide along the part where the diameter of the truncated cone 4321 gradually decreases. Each expansion piece 5 is located at one end outside the outer shell 6. Then, according to Figure 5 The arrows indicate the direction, restoring the radial distribution away from the shaft core 2.

[0045] Review Figure 2 The shaft core 2 includes a core body 21 and a connecting nut 22. The connecting nut 22 is located on the top of the core body 21, and the core body 21 is connected to the pressing part 1 through the connecting nut 22. The shaft core 2 is connected to the pressing part 1 through the connecting nut 22 to prevent the pressing part 1 from falling off from the top of the shaft core 2.

[0046] Specifically, such as Figure 6 As shown, Figure 6 The diagram shows the three-dimensional structure of the test head for the energy storage PACK module. The outer wall of the housing 6 is also provided with a wiring terminal 62, and the wiring terminal 62 is provided with a wiring hole 621, which is matched with the position of the through hole 61.

[0047] In specific operations, review Figure 1 Users can connect the test leads to the wiring hole 621. After passing through the wiring hole 621, the test leads enter the housing 6 through the through hole 61, thereby connecting the test leads to the test head of the energy storage PACK module.

[0048] like Figure 6 As shown, the outer wall of the pressing handle 122 is provided with a plurality of pressing grooves 1221, which are arranged sequentially along the length of the pressing handle 122. The pressing grooves 1221 are provided to prevent the part of the user holding the pressing handle 122 from slipping when the user operates the pressing handle 122.

[0049] Preferably, both the first elastic element 32 and the second elastic element 44 are springs. Using springs allows the first pressing sleeve 31 and the second pressing sleeve 42 to reset when no force is applied, preventing continuous compression from the first pressing sleeve 31 and the second pressing sleeve 42.

[0050] In summary, in the specific implementation of this utility model, the test wire is connected to the wiring hole 621. After passing through the wiring hole 621, the test wire enters the housing 6 through the through hole 61, thereby connecting the test wire to the test head of the energy storage PACK module. The user holds the pressing handle 122 and applies force to it, causing the pressing handle 122 to move towards the housing 6, thereby rotating the connecting rod 121 and driving the connecting piece 13 to press down. This, in turn, pushes the top shaft 14. The top shaft 14 presses the first pressing sleeve 31, causing the first pressing sleeve 31 to press towards the second pressing sleeve 42, so that the second pressing sleeve 42 can slide along the shaft core 2 towards the multiple expansion pieces 5. After the second pressing sleeve 42 slides, the second pressing sleeve 42 presses the second elastic member 44, and the second elastic member 44 will push the pressing shaft 43. At this time, the mounting shaft 431 inside the second pressing sleeve 42 will extend out of the second pressing sleeve 42 to push the pressing body 432 to push the end of the multiple expansion pieces 5 inside the protective shell 42, thereby causing the multiple expansion pieces 5 extending out of the protective shell 45 to extend. The extended multiple expansion pieces 5 can be connected to the energy storage PACK module.

[0051] After the energy storage PACK module test head is connected to the energy storage PACK module, the pressing handle 122 is released, so that the connecting piece 13 no longer squeezes the top shaft 14. When the top shaft 14 is no longer under force, the first pressing sleeve 31 is no longer squeezed by the top shaft 14, and the first pressing sleeve 31 will not exert force on the second pressing sleeve 42. Since the first elastic element 32 is squeezed by the first pressing sleeve 31, when the first pressing sleeve 31 is no longer squeezed by the top shaft 14 and the second pressing sleeve 42 is no longer squeezed by the first pressing sleeve 31, the first elastic element 32 resets the first pressing sleeve 31, and the second elastic element 44 resets the second pressing sleeve, so that the pressing body 432 no longer pushes one end of the expansion piece 5 inside the protective shell 42. The end of each expansion piece 5 outside the outer shell 6 returns to a radial distribution away from the shaft core 2, so as to fix the energy storage PACK module test head to the energy storage PACK module.

[0052] The test leads are connected to the wiring holes 621 of the wiring terminals 62 on the housing 6. After passing through the wiring holes 621, the test leads enter the housing 6 through the through holes 61, making contact with the expansion plates 5. Then, the pressing part 1 is pressed down, which compresses the first pressing part 3, which in turn compresses the second pressing part 4. This causes the second pressing part 4 to push multiple expansion plates 5 out of the housing 6 and connect them to the energy storage PACK module, allowing for measurement of the energy storage PACK module. Thus, when testing the energy storage PACK module, the wires do not need to be connected to the energy storage PACK module using screws, improving operational convenience. Furthermore, it eliminates the need for components that connect the test leads to cylinders to connect the energy storage PACK module, thereby reducing operating costs.

[0053] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A test pressure head for an energy storage PACK module, characterized in that, include: The assembly comprises a pressing part (1), a shaft core (2), a first extrusion part (3), a second extrusion part (4), multiple expansion plates (5), and a housing (6). The pressing part (1) is fixed to the top of the shaft core (2). The first extrusion part (3) and the second extrusion part (4) are slidably fitted onto the shaft core (2) in a direction away from the pressing part (1). The first extrusion part (3) faces the pressing part (1) and is connected to the second extrusion part (4). Multiple expansion plates (5) are arranged around the shaft core (2) to enclose it. One end of each expansion plate (5) is confined within the second extrusion part (4), and the other end of each expansion plate (5) is outside the second extrusion part (4). The housing (6) is fitted onto the shaft core (2). Outside the first extrusion part (3), the second extrusion part (4) and multiple expansion pieces (5), and the end of the outer shell (6) near the pressing part (1) is connected to the pressing part (1), and the end of the multiple expansion pieces (5) outside the second extrusion part (4) is also outside the outer shell (6), and the wall of the outer shell (6) is also provided with through holes; wherein, when the pressing part (1) is pressed, the pressing part (1) applies force to the first extrusion part (3), the first extrusion part (3) slides along the shaft (2) to extrude the second extrusion part (4), and the second extrusion part (4) slides along the shaft (2) under the extrusion of the first extrusion part (3) to extrude the multiple expansion pieces (5), and the length of the multiple expansion pieces (5) extending out of the outer shell (6) becomes longer.

2. The test head for the energy storage PACK module according to claim 1, characterized in that, The pressing part (1) includes a mounting base (11), a pressing rod (12), a connecting piece (13), and a top shaft (14). The mounting base (11) is connected to the outer shell (6), and a mounting position (111) is provided on the mounting base (111). The pressing rod (12) includes a connecting rod (121) and a pressing handle (122). The connecting rod (121) is located in the mounting position (111), and one end of the connecting rod (121) is rotatably connected to the mounting base (11). The pressing handle (122) is located in the mounting position (111). 2) The connector (13) is located at the other end of the connecting rod (121) and is located in the mounting position (111). One end of the connector (13) is rotatably connected to the other end of the connecting rod (121), and the other end of the connector (13) is rotatably connected to one end of the top shaft (14). The other end of the top shaft (14) is inserted into the mounting seat (11), and the top shaft (14) can move relative to the mounting seat (11) towards or away from the first extrusion part (3).

3. The test head for the energy storage PACK module according to claim 1, characterized in that, The first pressing part (3) includes a first pressing sleeve (31) and a first elastic element (32). The first pressing sleeve (31) is sleeved on the shaft core (2). One end of the first pressing sleeve (31) faces the top shaft (14). The other end of the first pressing sleeve (31) is connected to the second pressing part (4). The first pressing sleeve (31) has a limiting groove (311) on its outer periphery. The first elastic element (32) is sleeved on the first pressing sleeve (31) and located in the limiting groove (311).

4. The test head for the energy storage PACK module according to claim 1, characterized in that, The second pressing part (4) includes a retaining ring (41), a second pressing sleeve (42), a pressing shaft (43), a second elastic element (44), and a protective shell (45). The retaining ring (41) is sleeved on one end of the second pressing sleeve (42). The second pressing sleeve (42) is sleeved on the shaft core (2) and the end with the retaining ring (41) is connected to the first pressing sleeve (31). The pressing shaft (43) includes a mounting shaft (431) and a pressing body (432). One end of the mounting shaft (431) passes through the second pressing sleeve (42). Inside the shaft (431), the pressing body (432) is located at the other end of the mounting shaft (431); the second elastic element (44) is sleeved on the mounting shaft (431), and the second elastic element (44) is limited between the second pressing sleeve (42) and the pressing body (432); the protective shell (45) is sleeved outside the pressing shaft (43), and the protective shell (45) is connected to the second pressing sleeve (42); one end of the multiple expansion pieces (5) is located inside the protective shell (45), and the other end of the multiple expansion pieces (5) extends out of the protective shell (45).

5. The test head for the energy storage PACK module according to claim 4, characterized in that, The pressing body (432) has a truncated cone (4321) formed at one end away from the mounting shaft (431), and the diameter of the truncated cone (4321) gradually decreases along the direction away from the second elastic member (44); the inner surface of each expansion piece (5) near the end of the truncated cone (4321) is provided on a curved surface that is adapted to the outer wall of the truncated cone (4321), and multiple expansion pieces (5) are provided at one end of the protective shell (45) and are attached to the surface of the truncated cone (4321).

6. The test head for the energy storage PACK module according to any one of claims 1-5, characterized in that, The shaft core (2) includes a core body (21) and a connecting nut (22). The connecting nut (22) is located on the top of the core body (21), and the core body (21) is connected to the pressing part (1) through the connecting nut (22).

7. The test head for the energy storage PACK module according to claim 6, characterized in that, The outer wall of the outer casing (6) is also provided with a terminal (62), and the terminal (62) is provided with a wiring hole (621), which is matched with the position of the through hole (61).

8. The test head for the energy storage PACK module according to claim 2, characterized in that, The outer wall of the pressing handle (122) is provided with multiple pressing grooves (1221), which are arranged sequentially along the length of the pressing handle (122).

9. The test head for the energy storage PACK module according to claim 4, characterized in that, Both the first elastic element (32) and the second elastic element (44) are springs.

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