Tool

Abstract

The tool comprises a supporting seat and a pressing head, a containing cavity is formed in the supporting seat, the containing cavity is used for containing a busbar, and a through hole communicated with the containing cavity is formed in the supporting seat; the pressing head penetrates through the through hole and the containing cavity and is used for being connected with a fixing hole in the busbar. The tool provided by the utility model solves the technical problem that the busbar is easy to move and topple during testing.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a tool. Background Art

[0002] In the busbar high-voltage connection system, an accurate yield strength value is a prerequisite for formulating the tightening torque standard for the connection system. If the yield strength of the busbar and its connection system cannot be accurately obtained, the tightening torque will not reach the optimal value in actual application, thereby increasing the risk of battery pack connection failure due to excessively high or low tightening torque. To this end, accurately obtaining the yield strength of the busbar high-voltage connection system and calculating the maximum tightening torque (i.e., the upper limit of safety) based on this is of great significance to ensure the long-term stable operation of the battery pack. Avoiding loose connections due to torque attenuation and further ensuring the safety of battery packs in high-voltage and high-temperature environments is a key technical challenge in the current design and manufacturing of battery packs.

[0003] However, in actual tests, the busbar is prone to movement and tipping, which results in a decrease in the accuracy of the experimental results. Utility Model Content

[0004] One purpose of the utility model is to provide a tool, which aims to solve the technical problem that the busbar is prone to movement and tipping during testing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a solution: a tool, characterized in that it includes: a support seat and a pressure head, the support seat is formed with a accommodating cavity, the accommodating cavity is used to place the bus, and the support seat is provided with a through hole connected to the accommodating cavity; the pressure head is inserted into the through hole and the accommodating cavity, and the pressure head is used to connect with the fixing hole on the bus.

[0006] Optionally, a positioning hole is formed at one end of the support base away from the through hole, the positioning hole is communicated with the accommodating cavity, and the positioning hole is used to position the busbar.

[0007] Optionally, a sliding groove is provided on the side wall of the positioning hole along the axial direction of the through hole.

[0008] Optionally, the support seat is provided with an insertion port which is respectively connected to the accommodating cavity and the positioning hole, the opening direction of the insertion port is perpendicular to the axial direction of the through hole, the insertion port passes through one side of the support seat, and the insertion port is used to insert the bus into the accommodating cavity and the positioning hole along the axial direction perpendicular to the through hole.

[0009] Optionally, the pressure head includes a connecting part and an abutting part, the connecting part is passed through the through hole and the accommodating cavity, the connecting part is used to connect with the fixing hole on the bus, the abutting part is connected to one end of the pressure head passing through the support seat, and the abutting part is used to withstand external pressure.

[0010] Optionally, the diameter of the through hole is greater than or equal to the outer diameter of the abutting portion.

[0011] Optionally, the through hole extends in a direction perpendicular to the axis of the through hole.

[0012] Optionally, the support base includes a first base and a second base, the first base and the second base are detachably connected to form a receiving cavity, and the through hole is opened in the first base.

[0013] Optionally, the second base is provided with a slot, and part of the first base is inserted into the slot.

[0014] Optionally, the support seat is provided with an adjustment port communicating with the accommodating cavity, the opening direction of the adjustment port is perpendicular to the axial direction of the through hole, and the adjustment port passes through a side surface of the support seat.

[0015] The beneficial effects of the present invention are:

[0016] The tooling includes a support base and a pressure head. The support base has a receiving cavity for accommodating a busbar, which has a threaded fixing hole. The support base has a through hole communicating with the receiving cavity, and the pressure head is inserted through the through hole and the receiving cavity. One end of the pressure head is provided with a threaded structure for connecting with the fixing hole on the busbar.

[0017] In actual application, during the test preparation stage, the busbar is placed in the accommodating cavity, and then the pressure head is passed through the through hole and threaded to the fixing hole. Finally, the fixture and the busbar are placed on the detection platform of the pressure testing machine. During the testing stage, the pressure head of the pressure testing machine moves downward and squeezes the pressure head. The pressure head applies force to the inner wall of the fixing hole, thereby detecting the yield strength of the system composed of the bolt and the fixing hole when the fixing hole and the bolt are threaded together. The support seat of the fixture not only effectively limits the lateral or longitudinal movement of the busbar during the test, but also increases the contact area between the busbar and the detection platform, further improving the stability of the busbar when subjected to force. In addition, the placement of the busbar in the accommodating cavity can reduce the safety hazards caused by deformation of the busbar, avoid potential harm to operators, and significantly improve the safety and reliability of the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a busbar provided by an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of a tooling assembly equipped with a busbar provided by an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of a cross-sectional structure for illustrating the interior of a tooling provided by an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the interior of a tooling for displaying an unassembled busbar, provided by an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the insertion port provided by an embodiment of the present utility model;

[0024] Figure 6 It is a structural schematic diagram for displaying the slot and the adjustment port provided by an embodiment of the present utility model.

[0025] Description of Figure Numbers:

[0026] 20. Support seat; 21. Accommodating cavity; 22. First base; 221. Through hole; 222. Adjustment port; 23. Second base; 231. Slide groove; 232. Slot; 233. Positioning hole; 24. Insertion port; 30. Press head; 31. Connecting portion; 32. Abutting portion; 40. Bus; 41. Fixing hole. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 4 As shown, Figure 1 This is a schematic structural diagram of a busbar 40 provided in an embodiment of the present invention. Figure 2 This is a schematic structural diagram of a tooling assembly equipped with a busbar 40 provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a cross-sectional structure for showing the interior of a tooling provided by an embodiment of the present invention. Figure 4 It is a schematic cross-sectional structure diagram of the interior of a tooling provided in an embodiment of the present invention for showing an unassembled busbar 40 .

[0029] The present embodiment provides a tooling assembly comprising a support base 20 and a pressing head 30. The support base 20 defines a receiving cavity 21 for receiving a busbar 40. The busbar 40 is provided with a threaded fixing hole 41. The support base 20 defines a through hole 221 communicating with the receiving cavity 21. The pressing head 30 extends through the through hole 221 and the receiving cavity 21. One end of the pressing head 30 is provided with a threaded structure for connecting with the fixing hole 41 on the busbar 40.

[0030] In actual application, during the test preparation stage, the busbar 40 is placed in the accommodating chamber 21, and then the pressure head 30 is passed through the through hole 221 and threadedly connected to the fixing hole 41, and finally the tooling and the busbar 40 are placed on the detection platform of the pressure testing machine. During the testing stage, the pressure head 30 of the pressure testing machine moves downward and squeezes the pressure head 30. The pressure head 30 applies force to the inner wall of the fixing hole 41, thereby detecting the yield strength of the system composed of the bolt and the fixing hole 41 when the fixing hole 41 and the bolt are threadedly connected. The support seat 20 of the tooling not only effectively limits the lateral or longitudinal movement of the busbar 40 during the test process, but also increases the contact area between the busbar 40 and the detection platform, further improving the stability of the busbar 40 when subjected to force. In addition, the placement of the busbar 40 in the accommodating chamber 21 can reduce the safety hazards caused by the deformation of the busbar 40, avoid potential harm to the operator, and significantly improve the safety and reliability of the testing process.

[0031] In one embodiment, see Figure 3 and Figure 4 A positioning hole 233 is formed at one end of the support base 20 away from the through hole 221 . The positioning hole 233 is communicated with the accommodating cavity 21 . The positioning hole 233 is used to position the busbar 40 .

[0032] In actual application, the positioning hole 233 is connected to the accommodating cavity 21, allowing the bus 40 to be accurately positioned when placed in the support base 20, avoiding the impact of positional offset on test accuracy. By providing the positioning hole 233 at the end of the support base 20 away from the through hole 221, the position of the bus 40 can be more conveniently and stably fixed during the test preparation process, ensuring that the bus 40 and the pressure head 30 are accurately aligned, thereby improving the accuracy and consistency of the test results. In addition, the design of the positioning hole 233 can reduce the displacement of the bus 40 during testing, further improving the safety and stability of the test process.

[0033] Further, see Figure 4 A sliding groove 231 is formed on the side wall of the positioning hole 233 along the axial direction of the through hole 221 .

[0034] In actual application, the sidewall of the positioning hole 233 is provided with a slide groove 231 along the axis of the through hole 221, so that the busbar 40 can be guided and positioned along the slide groove 231 during placement or adjustment. This design not only makes the installation process of the busbar 40 smoother, but also ensures that the busbar 40 is more accurately aligned with the pressure head 30 and the through hole 221 in the accommodating cavity 21.

[0035] Optionally, see Figure 5 The support seat 20 is provided with an insertion port 24 which is connected to the accommodating cavity 21 and the positioning hole 233 respectively. The opening direction of the insertion port 24 is perpendicular to the axial direction of the through hole 221. The insertion port 24 passes through one side surface of the support seat 20. The insertion port 24 is used for the bus 40 to be inserted into the accommodating cavity 21 and the positioning hole 233 along the axial direction perpendicular to the through hole 221.

[0036] In actual use, the support base 20 defines an insertion opening 24, allowing the busbar 40 to be inserted into the accommodating cavity 21 and the positioning hole 233 in a direction perpendicular to the axis of the through-hole 221, thereby simplifying the assembly of the busbar 40. In actual use, the insertion opening 24 extends through one side of the support base 20. This design not only facilitates the lateral insertion of the busbar 40, but also reduces the height space required for the equipment, allowing the busbar 40 to be quickly and stably positioned within the accommodating cavity 21. This structure further improves the convenience and efficiency of the tooling during assembly.

[0037] In one embodiment, see Figure 3 The pressure head 30 includes a connecting portion 31 and an abutting portion 32. The connecting portion 31 is arranged in the through hole 221 and the accommodating cavity 21. The connecting portion 31 is used to connect with the fixing hole 41 on the bus 40. The abutting portion 32 is connected to one end of the pressure head 30 that passes through the support seat 20. The abutting portion 32 is used to withstand external pressure.

[0038] In actual application, the pressure head 30 includes a connecting portion 31 and an abutting portion 32. The connecting portion 31 is inserted into the through hole 221 and the accommodating cavity 21 and cooperates with the fixing hole 41 of the bus 40 to achieve stable positioning of the bus 40. At the same time, the abutting portion 32 extends to the outside of the pressure head 30 passing through the support seat 20, and its size is the same as the size of the corresponding bolt head. This design ensures that the externally applied pressure can be accurately transmitted to the fixing hole 41 of the bus 40, thereby obtaining more realistic yield strength test data. During the testing phase, the abutting portion 32 can evenly transmit the external pressure to the bus 40, ensuring the accuracy and effectiveness of the force, which not only enhances the firmness and reliability of the tooling in fixing and positioning the bus 40, but also further improves the accuracy and safety of the test.

[0039] Further, refer to Figure 3 The diameter of the through hole 221 is greater than or equal to the outer diameter of the abutting portion 32 .

[0040] In actual application, when the diameter of through-hole 221 is larger than the outer diameter of abutment portion 32, the position of abutment portion 32 can be adjusted during assembly, avoiding misalignment due to assembly errors and ensuring proper alignment of indenter 30. When the diameter is equal to the outer diameter of abutment portion 32, through-hole 221 acts as a guide, facilitating the precise docking of connection portion 31 with fixing hole 41 of busbar 40, thereby improving assembly efficiency and ensuring a stable connection. This design not only optimizes the assembly process but also enhances the accuracy and reliability of the tooling during testing.

[0041] Optionally, the through hole 221 extends in a direction perpendicular to the axis of the through hole 221 .

[0042] In actual application, the through hole 221 extends in a direction perpendicular to its axis. This design not only maintains the consistency of the aperture of the through hole 221, but also provides sufficient adjustment space for the abutment portion 32. The consistency of the aperture ensures that the through hole 221 can limit the abutment portion 32, thereby facilitating the alignment of the connecting portion 31 and the fixing hole 41. At the same time, the space provided for the extension of the through hole 221 ensures that even in the event of misalignment, the connecting portion 31 can still be smoothly docked with the fixing hole 41, ensuring alignment accuracy during assembly. This structure optimizes the flexibility of the tooling, enhances reliability during assembly, and improves the adaptability and ease of use of the tooling.

[0043] In this embodiment, the through hole 221 is in the shape of a waist hole, and may also include two parts that are perpendicular to each other.

[0044] In one embodiment, referring to Figure 2 The support base 20 includes a first base 22 and a second base 23 . The first base 22 and the second base 23 are detachably connected to form an accommodating cavity 21 . The through hole 221 is opened in the first base 22 .

[0045] In practical applications, by designing the support base 20 to be detachably connected by the first base 22 and the second base 23, this structure enables the accommodating cavity 21 to be assembled and disassembled as needed, so that the tooling can adapt to different testing requirements.

[0046] In this embodiment, the first base 22 is overlapped with the second base 23. In other embodiments, the first base 22 may be connected to the second base 23 by bolts.

[0047] Further, refer to Figure 6 The second base 23 defines a slot 232 along the axial direction of the through hole 221 , and a portion of the first base 22 is inserted into the slot 232 .

[0048] In practice, first base 22 is partially inserted into slot 232 of second base 23, effectively enhancing the stability and precision of the connection between the two, while also improving ease of assembly and disassembly. Slot 232 ensures accurate docking between first base 22 and second base 23, preventing errors or looseness and ensuring structural stability during testing.

[0049] In one embodiment, referring to Figure 2 The support seat 20 is provided with an adjustment port 222 communicating with the accommodating cavity 21 . The opening direction of the adjustment port 222 is perpendicular to the axial direction of the through hole 221 . The adjustment port 222 passes through one side surface of the support seat 20 .

[0050] In actual application, the connection design between the adjustment port 222 of the support seat 20 and the accommodating cavity 21 makes it easy to adjust the position of the bus 40 in the accommodating cavity 21 during use, making the adjustment operation of the tooling more convenient and efficient. At the same time, there is no need to completely disassemble the support seat 20, which improves the flexibility and ease of use of the tooling.

[0051] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0053] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A tool, characterized in that: include: A support base, wherein the support base is formed with an accommodating cavity, the accommodating cavity is used to place the busbar, and the support base is provided with a through hole communicating with the accommodating cavity; A pressure head is provided through the through hole and the accommodating cavity, and the pressure head is used to be connected to the fixing hole on the busbar.

2. The tooling according to claim 1, characterized in that: A positioning hole is formed at one end of the support base away from the through hole. The positioning hole is communicated with the accommodating cavity and is used to position the busbar.

3. The tooling according to claim 2, characterized in that: A sliding groove is provided on the side wall of the positioning hole along the axial direction of the through hole.

4. The tooling according to claim 2, characterized in that: The support seat is provided with an insertion port which is respectively connected to the accommodating cavity and the positioning hole, the opening direction of the insertion port is perpendicular to the axial direction of the through hole, the insertion port passes through one side surface of the support seat, and the insertion port is used for the bus to be inserted into the accommodating cavity and the positioning hole along the axial direction perpendicular to the through hole.

5. The tooling according to claim 1, characterized in that: The pressure head includes a connecting portion and an abutting portion. The connecting portion is arranged in the through hole and the accommodating cavity. The connecting portion is used to connect with the fixing hole on the bus. The abutting portion is connected to one end of the pressure head passing through the support seat. The abutting portion is used to withstand external pressure.

6. The tooling according to claim 5, characterized in that: The diameter of the through hole is greater than or equal to the outer diameter of the abutting portion.

7. The tooling according to claim 5, characterized in that: The through hole extends in a direction perpendicular to an axis of the through hole.

8. The tooling according to claim 1, characterized in that: The support base includes a first base and a second base. The first base and the second base are detachably connected to form the accommodating cavity. The through hole is opened in the first base.

9. The tooling according to claim 8, characterized in that: The second base is provided with a slot, and a portion of the first base is inserted into the slot.

10. The tooling according to claim 1, characterized in that: The support seat is provided with an adjustment port communicating with the accommodating cavity. The opening direction of the adjustment port is perpendicular to the axial direction of the through hole. The adjustment port passes through a side surface of the support seat.

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