Connection terminal and acquisition device

Abstract

The utility model discloses a connecting terminal and an acquisition device, the connecting terminal comprises a first connecting terminal, and the first connecting terminal comprises a first anti-falling part, a second anti-falling part and a first connecting part; the first anti-falling part and the second anti-falling part are respectively connected with two ends of the first connecting terminal; and after the first connecting terminal is connected with the metal bar, the first anti-falling part and the second anti-falling part respectively limit the first connecting part to be separated from the metal bar from the two ends. According to the connecting terminal and the acquisition device, when the connecting terminal is connected with the metal bar, the connecting terminal is prevented from being separated from the metal bar through the first anti-separation part and the second anti-separation part in the connecting terminal, the connection is simple and reliable, and bolts and nuts are not needed in the connection of the connecting terminal and the metal bar.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage boxes of power battery packs, and particularly relates to a connecting terminal and a collecting device. Background Art

[0002] A power battery pack generally refers to a battery system for storing electric energy in an electric vehicle, and it is one of the core components of the electric vehicle. The power battery pack is usually composed of multiple battery cells (such as lithium batteries), and these battery cells are encapsulated together and monitored and controlled by a battery management system (BMS) to ensure the safe operation and optimal performance of the battery.

[0003] The high-voltage box of the power battery pack, also known as the high-voltage distribution box or the high-voltage control unit, is a key component for managing the high-voltage electrical system in an electric vehicle. It is mainly responsible for the electrical connection and control between the battery pack and high-voltage electrical equipment such as motors and chargers. The high-voltage box usually contains protection and control components such as circuit breakers, contactors, fuses, and relays to ensure the safe and stable operation of the system.

[0004] The relationship between the power battery pack and the high-voltage box is very close. The power battery pack provides electric energy, and the high-voltage box is responsible for safely and effectively distributing this electric energy to each high-voltage electrical equipment of the electric vehicle. They jointly constitute the power supply system of the electric vehicle and are the basis for the normal operation of the electric vehicle. The battery management system (BMS) plays a coordinating role in this, monitors the state of the battery pack, and controls the operation of the entire system through communication with the high-voltage box. Among them, the copper bus voltage acquisition structure is an important connection structure between the battery management system (BMS) and the high-voltage box.

[0005] In the existing battery pack design, circular terminals are usually used as the carriers for voltage acquisition in the copper bus voltage acquisition of the high-voltage box. The circular terminals are connected to the copper bus and conduct electricity. Bolts and nuts are required to fasten the circular terminals, and there is a situation where the torque of the bolts and nuts is loosened, which may lead to voltage acquisition failures and inaccurate voltage acquisition. In addition, during the assembly process of the circular terminals and the copper bus, there is also an easy occurrence of assembly errors due to too many types of bolts, affecting the normal operation of the vehicle and even resulting in safety accidents. Summary of the Utility Model

[0006] In order to overcome at least one of the above-mentioned defects in the prior art, one of the purposes of the present utility model is to provide a connecting terminal, in which a first anti-disconnection part, a second anti-disconnection part, and a first connection part are provided. The first connection part is used to connect with the metal bus, and the first anti-disconnection part and the second anti-disconnection part are respectively used to limit the first connection part from detaching from the metal bus at both ends.

[0007] To overcome at least one of the above-mentioned defects of the prior art, the second object of the present utility model is to provide a collection device. In this collection device, the aforementioned connection terminal is used to connect with the metal row. The first connection part in the connection terminal is used to connect with the metal row, and the first anti-disengagement part and the second anti-disengagement part in the connection terminal are used to prevent the connection terminal from disengaging from the metal row. The connection is simple and reliable, and bolts and nuts are not required when the connection terminal is connected to the metal row.

[0008] The technical solution adopted by the present utility model to solve its problems is:

[0009] A connection terminal includes a first connection terminal that is connected to a metal row during use. A conduction part is provided on the first connection terminal. After the first connection terminal is connected to the metal row, the conduction part is electrically conductive with the metal row.

[0010] The first connection terminal includes a first anti-disengagement part, a second anti-disengagement part, and a first connection part;

[0011] The first connection part has a first end and a second end. The first anti-disengagement part and the second anti-disengagement part are respectively connected to the first end and the second end;

[0012] When the first connection terminal is connected to the metal row, the first end or the second end is inserted and passes through the connection post hole on the metal row, and the second end or the first end remains outside the metal row;

[0013] After the first connection terminal is connected to the metal row, the first anti-disengagement part and the second anti-disengagement part respectively limit the first connection part from disengaging from the metal row at the first end or the second end.

[0014] Further: The first connection part is columnar; and the outer diameter of the first connection part is adapted to the inner diameter of the connection post hole on the metal row.

[0015] Further:

[0016] Both the first anti-disengagement part and the second anti-disengagement part are integrally and fixedly connected to the first end and the second end respectively. The outer diameter of the first anti-disengagement part is slightly larger than the inner diameter of the connection post hole on the metal row. When the first connection terminal is connected to the metal row, the first anti-disengagement part and the first end pass through the connection post hole on the metal row in sequence;

[0017] The outer diameter of the second anti-disengagement part is larger than the inner diameter of the connection post hole on the metal row.

[0018] Further: The first connection part is cylindrical, the first anti-disengagement part is spherical, the outer diameter of the cylindrical first connection part is adapted to the inner diameter of the connection post hole on the metal row, and the outer diameter of the spherical first anti-disengagement part is slightly larger than the outer diameter of the cylindrical first connection part.

[0019] Further: A deformation portion is provided on the first connection portion or on the first connection portion and the first anti - detachment portion;

[0020] When the first connection portion or the first connection portion and the first anti - detachment portion pass through the connection post hole on the metal row, the deformation portion absorbs the deformation generated by the extrusion of the first connection portion or the first connection portion and the first anti - detachment portion by the connection post hole on the metal row.

[0021] Further: The deformation portion includes a deformation groove, the deformation groove is provided on the outer peripheral surface of the first connection portion and penetrates the first connection portion along the radial direction of the first connection portion, and both ends of the deformation groove respectively extend to the first anti - detachment portion and the second anti - detachment portion, and the deformation groove absorbs the deformation along the radial direction when the first connection portion and the first anti - detachment portion pass through the connection post hole on the metal row.

[0022] Further: The height of the first connection portion is adapted to the length of the connection post hole on the metal row;

[0023] The second anti - detachment portion is in a disc shape, and after the first connection terminal is connected to the metal row, the surface of the disc - shaped second anti - detachment portion facing the first connection portion contacts the metal row.

[0024] Further, the connection terminal further includes an anti - rotation portion, and the anti - rotation portion is connected to the first connection terminal; after the first connection terminal is connected to the metal row, the anti - rotation portion restricts the circumferential rotation of the first connection terminal.

[0025] Further, the anti - rotation portion includes a plug rod, one end of the plug rod is fixedly connected to the second anti - detachment portion and / or the first connection portion, and the other end of the plug rod extends in the same direction as the first connection portion;

[0026] When the first connection terminal is connected to the metal row, the plug rod is synchronously inserted into the anti - rotation hole on the metal row.

[0027] Further: It further includes a second connection terminal for fixedly connecting a wire and being electrically conducted with the conducting portion, and the second connection terminal is fixedly connected to the first connection terminal.

[0028] Further: The second connection terminal includes a wire - holding groove with an arc - shaped cross - section, the wire - holding groove includes an end one and an end two, and the end one is fixedly connected to the first connection terminal;

[0029] A number of wire - pressing pieces are further provided on the wire - holding groove, and when the second connection terminal is connected to the wire, the wire - pressing pieces are bent inward to tightly press the wire in the wire - holding groove.

[0030] Further: The first end is smoothly and fixedly connected to the second anti - detachment part; the second end expands outward in the radial direction.

[0031] Further: The conduction part is arranged on the first anti - detachment part and / or the second anti - detachment part and / or the first connection part. After the first connection terminal is connected to the metal row, the conduction part is electrically conductive with the metal row.

[0032] Further: The second anti - detachment part and / or the first connection part and / or the first anti - detachment part are made of conductive materials; after the first connection terminal is connected to the metal row, the contact part of the second anti - detachment part and / or the first connection part with the metal row forms the conduction part.

[0033] A collection device includes the aforementioned connection terminal, as well as a wire and / or a metal row; the connection terminal is connected to the wire and / or the metal row and is electrically conductive.

[0034] The first connection terminal is connected to the metal row and is electrically conductive and / or the second connection terminal is connected to the wire and is electrically conductive.

[0035] Further, connection post holes and anti - rotation holes are provided on the metal row. The connection post holes and the anti - rotation holes respectively match the first connection part and the anti - rotation part, and the first connection part and the anti - rotation part are respectively inserted into the connection post holes and the anti - rotation holes.

[0036] In summary, a connection terminal provided by the present utility model has the following technical effects:

[0037] 1. A first connection part is arranged in the first connection terminal. When the first connection terminal is connected to the metal row, the first connection part passes through the connection post hole on the metal row to realize the connection between the connection terminal and the metal row. In the connection between the connection terminal and the metal row, it is not necessary to fix with bolts and nuts, avoiding the situation of connection failure caused by the torque relaxation of bolts and nuts.

[0038] 2. The first anti - detachment part and the second anti - detachment part are respectively used to limit the first connection part from detaching from the metal row at both ends, ensuring the reliable connection between the connection terminal and the metal row without using bolts and nuts, and there is no risk of the connection terminal detaching from the metal row.

[0039] 3. The deformation part is provided so that the first connection part can smoothly pass through the connection post hole on the metal row, and after passing through, the first connection part is in interference fit with the connection post hole, ensuring reliable electrical conduction between the first connection part and the metal row.

[0040] 4. The anti - rotation part is provided. After the connection terminal is connected to the metal row, the anti - rotation part restricts the connection terminal from rotating circumferentially.

[0041] 5. A second connection terminal is provided to facilitate the connection and electrical conduction between the wire and the connection terminal.

[0042] In summary, a collection device provided by the present utility model has the following technical effects:

[0043] In this collection device, the aforementioned connection terminal is adopted. The connection terminal is connected to both the metal row and the wire, and electrical conduction is achieved with both the metal row and the wire, that is, electrical conduction between the metal row and the wire is realized. In the connection between the connection terminal and the metal row, the first connection portion on the first connection terminal is inserted into the metal row, and the first anti-disengagement portion and the second anti-disengagement portion respectively restrict the first connection portion from disengaging from the metal row at both ends. In the connection between the connection terminal and the metal row, the use of nuts and bolts for fixed connection is avoided, reducing the risk of connection failure caused by the torque relaxation of the bolts and nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic structural diagram of an embodiment of a connection terminal of the present utility model.

[0045] Figure 2 It is a schematic structural diagram of another embodiment of a connection terminal of the present utility model.

[0046] Figure 3 It is a schematic structural diagram of an embodiment of a collection device of the present utility model.

[0047] Figure 4 For Figure 3 the front view.

[0048] Figure 5 For Figure 3 the exploded view.

[0049] Among them, the meanings of the reference numerals are as follows:

[0050] 10. Connection terminal; 20. Metal row; 201. Connection column hole; 202. Anti-rotation hole; 30. Wire;

[0051] 1. First connection terminal; 11. First connection portion; 12. First anti-disengagement portion; 13. Second anti-disengagement portion; 14. Deformation groove; 2. Second connection terminal; 21. Wire trough; 211. End one; 212. End two; 22. Pressing piece; 23. Connection rib; 3. Anti-rotation portion; 31. Insertion rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0055] Referring to Figures 3 to 5 , a structure of a collection device of the present utility model is disclosed. The collection device includes a wire 30 and / or a metal row 20 and a connection terminal 10. At least one of the metal row 20 and the wire 30 is included in the collection device, or both are included. The connection terminal 10 is connected to the metal row 20 and is electrically conductive, and / or the connection terminal 10 is connected to the wire 30 and is electrically conductive.

[0056] In this solution, through a special structural design of the connection terminal 10, when the connection terminal 10 is connected to the metal row 20, it is a direct connection between the connection terminal 10 and the metal row, without the need to supplement connection bolts and nuts for connection and fixation. On the one hand, the connection operation is made simpler and faster. On the other hand, the situation of torque back-off of the connection bolts and nuts is avoided, reducing the risk of loosening or connection failure after the connection terminal is connected to the metal row. Moreover, in the connection between the connection terminal 10 and the metal row, there is no need to supplement connection bolts and nuts for connection and fixation, reducing the number of bolts and nuts used in the assembly process, reducing the assembly difficulty, and reducing the risk of assembly errors.

[0057] For the convenience of those skilled in the art to understand the structure of the connection terminal 10, the following combines Figure 1 and Figure 2 to make a detailed introduction to the structure of the connection terminal 10.

[0058] Referring to Figure 1 and Figure 2 , a connection terminal structure diagram of the technical solution of the present utility model is disclosed.

[0059] In this technical solution, a connection terminal 10 includes a first connection terminal 1 that is connected to the metal row 20 during use. A conduction portion is provided on the first connection terminal 1, and after the first connection terminal 1 is connected to the metal row 20, the conduction portion is electrically conductive with the metal row 20.

[0060] The first connection terminal 1 includes a first anti-disengagement portion 12, a second anti-disengagement portion 13, and a first connection portion 11. The first connection portion 11 has a first end and a second end, and the first anti-disengagement portion 12 and the second anti-disengagement portion 13 are respectively connected to the first end and the second end.

[0061] When the first connection terminal 1 is connected to the metal row 20, the first end or the second end is inserted through and passes through the connection post hole 201 on the metal row 20, and the second end or the first end remains outside the metal row 20. After the first connection terminal 1 is connected to the metal row 20, the first anti-disengagement portion 12 and the second anti-disengagement portion 13 respectively limit the first connection portion 11 from disengaging from the metal row 20 at the first end or the second end.

[0062] "During use" mentioned in the above solution includes when the connection terminal 10 is assembled with the metal row, and also includes after the connection terminal is assembled with the metal row. The first connection terminal is provided on the connection terminal. When the connection terminal is assembled with the metal row and / or after the connection terminal is assembled with the metal row, the first connection terminal 1 is connected to the metal row. The connection here includes direct connection to the metal row and also includes indirect connection to the metal row, including fixed connection and also including non-fixed connection.

[0063] "During connection" mentioned in the above solution refers to the assembly process of the connection terminal 10 and the metal row.

[0064] "After connection" mentioned in the above solution refers to after the assembly of the connection terminal 10 and the metal row is completed.

[0065] In the above solution, the conduction portion is provided to achieve electrical conduction between the connection terminal 10 and the metal row, and to achieve the acquisition and transmission of voltage signals.

[0066] In the above solution, the first anti-disengagement portion 12 and the second anti-disengagement portion 13 are respectively connected to the first end and the second end, including the following situations: the first anti-disengagement portion 12 and the second anti-disengagement portion 13 are respectively fixedly connected to the first end and the second end; or, the first anti-disengagement portion 12 and the second anti-disengagement portion 13 are respectively detachably connected to the first end and the second end; or, the first anti-disengagement portion is fixedly connected to the first end, and the second anti-disengagement portion is detachably connected to the second end; or the first anti-disengagement portion is detachably connected to the first end, and the second anti-disengagement portion is fixedly connected to the second end. Here, "detachable connection" means that without damaging the two structures connected to each other, one of the structures can be disassembled from the other structure, and can be normally installed back when needed, and the original function can be achieved.

[0067] In the above solution, when the first connection terminal 1 is connected to the metal row 20, the first end or the second end is inserted and passed through the connection post hole 201 on the metal row 20, and the second end or the first end remains outside the metal row 20. It can be that the first end passes through and is inserted through the connection post hole 201 on the metal row 20, and the second end remains outside the metal row 20; of course, it can also be that the second end passes through and is inserted through the connection post hole 201 on the metal row 20, and the first end remains outside the metal row 20.

[0068] In the above solution, after the first connection terminal 1 is connected to the metal row 20, the first anti-disengagement portion 12 and the second anti-disengagement portion 13 respectively restrict the first connection portion 11 from disengaging from the metal row 20 at the first end or the second end. Combining the descriptions of the previous paragraph and the paragraph before the previous paragraph, it can be that the first end passes through the connection post hole on the metal row and then is connected to the first anti-disengagement portion, while the second anti-disengagement portion remains outside the connection post hole; it can also be that the second end passes through the connection post hole on the metal row and then is connected to the second anti-disengagement portion, while the first anti-disengagement portion remains outside the connection post hole; it can also be that the first anti-disengagement portion and the first end pass through the connection post hole in sequence, while the second end does not pass through the connection post hole, and the second end and the second anti-disengagement portion remain outside the connection post hole; or it can also be that the second anti-disengagement portion and the second end pass through the connection post hole in sequence, while the first end does not pass through the connection post hole, and the first end and the first anti-disengagement portion remain outside the connection post hole.

[0069] In the above solution, after the first connection terminal 1 is connected to the metal row 20, the first anti-disengagement portion 12 and the second anti-disengagement portion 13 respectively restrict the first connection portion 11 from disengaging from the metal row 20 at the first end or the second end. The main ways for the first anti-disengagement portion 12 and the second anti-disengagement portion 13 to restrict the first connection terminal from disengaging at the first end or the second end are that the shapes of the first anti-disengagement portion 12 and the second anti-disengagement portion 13 are inconsistent with the shape of the connection post hole, and interference occurs with the connection post hole when the first anti-disengagement portion or the second anti-disengagement portion passes through the connection post hole, resulting in being unable to disengage from the connection post hole; or the shapes of the first anti-disengagement portion 12 and / or the second anti-disengagement portion 13 are consistent or inconsistent with the shape of the connection post hole, but at least part of the position dimensions are larger than the inner diameter of the connection post hole, and they cannot disengage from the connection post hole.

[0070] In the above solution, when the first connection terminal 1 is connected to the metal row 20, the first end or the second end is inserted and passed through the connection post hole 201 on the metal row 20, and the second end or the first end remains outside the metal row 20, that is, when the first connection terminal is connected to the metal row, it is the first connection portion that is directly connected to the metal row, and no other structure is used to achieve the connection or assist in the connection.

[0071] As can be seen from the above technical solution and the above description, when the first connection terminal is connected to the metal row, it is directly connected to the metal row 20 through the first connection portion 11. The connection can be achieved by inserting the first connection portion into the metal row. At the same time, the first anti-disengagement portion and the second anti-disengagement portion are combined to prevent the first connection portion connected to the metal row from disengaging from the metal row. The entire connection operation process is simple and fast. During and after the connection process, there is no need to use connection fasteners such as bolts and nuts to achieve connection or for auxiliary fixation. In the connection between the connection terminal and the metal row, there is no need to fix and prevent disengagement through bolts and nuts, avoiding the situation where connection failure occurs due to the torque relaxation of bolts and nuts. The first anti-disengagement portion and the second anti-disengagement portion are respectively used to limit the first connection portion from disengaging from the metal row at both ends, ensuring that the connection between the connection terminal and the metal row without using bolts and nuts is reliable and there is no risk of the connection terminal disengaging from the metal row. In addition, in the connection between the connection terminal and the metal row, there is no need to fix through bolts and nuts, reducing the use of bolts and nuts in the acquisition device, reducing costs, and at the same time avoiding the problems of incorrect use or incorrect installation of too many different types of bolts and nuts during use. In this solution, through the design of the first connection terminal structure, the rapid connection between the first connection terminal and the metal row is achieved, ensuring the reliable connection between the first connection terminal and the metal row, reducing the use of bolts and nuts, and reducing the risks of assembly errors and working failures.

[0072] In this technical solution, the first connection portion 11 is columnar; and the outer diameter of the first connection portion 11 is adapted to the inner diameter of the connection column hole 201 on the metal row 20.

[0073] In the above solution, the outer diameter of the first connection portion 11 is adapted to the inner diameter of the connection column hole 201 on the metal row 20, including the following situations: the shape of the first connection portion 11 is similar to, the same as, or different from the shape of the connection column hole 201, and the outer diameter of the first connection portion 11 is adapted to the inner diameter of the connection column hole 201 on the metal row 20 to ensure that the first connection portion can pass through the connection column hole. The outer diameter of the first connection portion is adapted to the inner diameter of the connection column hole 201 on the metal row 20, mainly including that the outer diameter of the first connection portion is less than or slightly less than the inner diameter of the connection column hole, or the outer diameter of the first connection portion is equal to the inner diameter of the connection column hole. Of course, the "equal" here does not mean that the outer diameter value of the first connection portion and the inner diameter value of the connection column hole must be exactly the same. The inner diameter values of the first connection portion and the connection column hole are equal within the allowable tolerance range to ensure that the first connection portion can pass through the connection column hole.

[0074] In this solution, to simplify the connection and assembly operations between the first connection terminal and the metal row, and at the same time ensure reliable connection after the connection terminal is connected to the metal row, and avoid problems such as loosening or falling off of the connection terminal itself, it is preferred in this solution that both the first anti-disengagement part 12 and the second anti-disengagement part 13 are integrally and fixedly connected to the first end and the second end respectively. When the first connection terminal is connected to the metal row, directly passing the first anti-disengagement part and the first connection part or the second anti-disengagement part and the first connection part through the connection post hole can avoid the installation and assembly of the first anti-disengagement part and the second anti-disengagement part.

[0075] In this solution, both the first anti-disengagement part 12 and the second anti-disengagement part 13 are integrally and fixedly connected to the first end and the second end respectively, and the outer diameter of the first anti-disengagement part 12 is slightly larger than the inner diameter of the connection post hole 201 on the metal row 20. When the first connection terminal 1 is connected to the metal row 20, the first anti-disengagement part 12 and the first end pass through the connection post hole 201 on the metal row 20 in sequence. The outer diameter of the first anti-disengagement part 12 is slightly larger than the inner diameter of the connection post hole 201 on the metal row 20. The "slightly larger" dimension range here is between ensuring that the first anti-disengagement part can pass through the connection post hole on the metal row and ensuring that the first anti-disengagement part will not disengage from the connection post hole on the metal row during operation. When the first connection terminal is connected to the metal row, the first anti-disengagement part and the first end are passed through the connection post hole on the metal row in sequence, the first connection part remains in the connection post hole and is connected to the metal row, while the second end and the second anti-disengagement part remain outside the connection post hole.

[0076] In this solution, to prevent the second anti-disengagement part from disengaging from the connection post hole, both the first anti-disengagement part 12 and the second anti-disengagement part 13 are integrally and fixedly connected to the first end and the second end respectively, and the outer diameter of the second anti-disengagement part 13 is larger than the inner diameter of the connection post hole 201 on the metal row 20. When the first connection terminal is assembled with the metal row, the first anti-disengagement part and the first end are driven through the connection post hole on the metal row in sequence, and the first connection part is connected to the connection post hole to achieve the assembly of the first connection terminal and the metal row. At this time, the second end of the first connection part does not pass through the connection post hole. At this time, to ensure that the second end always remains outside the connection post hole and does not enter or pass through the connection post hole, it is necessary to ensure that the outer diameter of the second anti-disengagement part is larger than the inner diameter of the connection post hole 201 on the metal row 20, so that the second anti-disengagement part will not enter or pass through the connection post hole under its own vibration, shaking or external pressing force.

[0077] Based on the above technical solution, to simplify the structure of the first connection part, the first connection part 11 can be cylindrical, semi-cylindrical or straight prism-shaped. The first connection part 11 being cylindrical, semi-cylindrical or straight prism-shaped is convenient for the processing and forming of the first connection part, reduces the manufacturing cost of the first connection part, and at the same time reduces the forming difficulty of the connection post hole and the assembly difficulty between the first connection part and the metal row.

[0078] To further simplify the structure of the first connecting portion or the first connecting terminal, while also reducing the friction between the first connecting portion and the metal row, improving the adaptability between the first connecting portion and the connecting post hole, increasing the contact area between the first connecting portion and the inner wall of the connecting post hole, and enhancing the connection stability between the first connecting portion and the metal row, in this solution, as Figure 1 and Figure 2 shown, the first connecting portion 11 is preferably cylindrical. When the first connecting portion is cylindrical, the connecting post hole on the metal row is also set as a cylindrical through hole. At this time, it is ensured that the outer diameter of the cylindrical first connecting portion 11 is adapted to the inner diameter of the connecting post hole 201 on the metal row 20, so that the first connecting portion enters the connecting post hole and is in clearance fit, transition fit or interference fit with the connecting post hole. To ensure a tight fit between the first connecting portion and the connecting post hole and avoid problems such as shaking and jitter after the first connecting terminal and the metal row are assembled, the cylindrical first connecting portion and the cylindrical connecting post hole are in interference fit.

[0079] In this solution, to further simplify the structure of the first anti - detachment portion, as Figure 1 and Figure 2 shown, the first anti - detachment portion 12 is spherical, and the outer diameter of the spherical first anti - detachment portion 12 is slightly larger than the outer diameter of the cylindrical first connecting portion 11. When the first connecting terminal and the metal row are assembled, the spherical first anti - detachment portion and the first end of the first connecting portion sequentially pass through the connecting post hole on the metal row. The outer diameter of the first anti - detachment portion 12 is slightly larger than the outer diameter of the cylindrical first connecting portion 11. The standard of "slightly larger" here is that the first anti - detachment portion can pass through the connecting post hole under the action of external force, but when no external force is applied, only under the action of its own gravity, shaking during work or turnover, etc., it cannot fall off from the connecting post hole by itself, that is, the anti - detachment function of the first anti - detachment portion is realized.

[0080] To facilitate the first anti - detachment portion to pass through the connecting post hole under the action of external force, and at the same time facilitate the cylindrical first connecting portion to enter the connecting post hole and be adapted to the connecting post hole, in this solution, both the first connecting portion and the first anti - detachment portion are set to be hollow. In this way, when the first anti - detachment portion and the first end of the first connecting portion sequentially pass through the connecting post hole, the first connecting portion and the first anti - detachment portion can have a certain rigid deformation in the radial direction. On the premise of ensuring that the first connecting portion and the first anti - detachment portion are not damaged, the first anti - detachment portion and the first end can pass through the connecting post hole smoothly in sequence. When the first connecting portion is cylindrical, semi - cylindrical or straight - prism - shaped, both the first connecting portion and the first anti - detachment portion can be set to be hollow.

[0081] In this solution, further to ensure that the first connecting portion and the first anti - detachment portion can pass through the connecting post hole more smoothly and to avoid plastic deformation of the first end of the first connecting portion and the first anti - detachment portion when passing through the connecting post hole, a deformation portion is provided on the first connecting portion 11 or on the first connecting portion 11 and the first anti - detachment portion 12. When the first connecting portion 11 or the first connecting portion 11 and the first anti - detachment portion 12 pass through the connecting post hole 201 on the metal row 20, the deformation portion absorbs the deformation generated when the first connecting portion 11 or the first connecting portion 11 and the first anti - detachment portion 12 are squeezed by the connecting post hole 201 on the metal row 20.

[0082] The deformation portion absorbs the deformation generated when the first connecting portion 11 or the first connecting portion 11 and the first anti - detachment portion 12 are squeezed by the connecting post hole 201 on the metal row 20, so that during the process of the first end of the first anti - detachment portion and the first connecting portion passing through the connecting post hole, the temporary deformation generated can be restored after passing through the connecting post hole, avoiding damage to the structures of the first anti - detachment portion and the first connecting portion, and avoiding changing the shapes and sizes of the first anti - detachment portion and the first connecting portion. After the deformation portion is provided, the first end of the first anti - detachment portion and the first connecting portion can pass through the connecting post hole smoothly. Conversely, the assembled first connecting terminal and the metal row can still be disassembled, and after disassembly, it does not affect the reuse of the metal row and / or the first connecting terminal, facilitating the maintenance and repair of the acquisition device using this connecting terminal, reducing the maintenance and repair costs of the acquisition device, and reducing the use cost of the acquisition device. Applying the acquisition device to the high - voltage voltage acquisition of the high - voltage box of the power battery pack reduces the high - voltage voltage acquisition cost of the power battery pack high - voltage box.

[0083] As Figure 1 and Figure 2 shown, the deformation portion includes a deformation groove 14. The deformation groove 14 is provided on the outer peripheral surface of the first connecting portion 11 and penetrates the first connecting portion 11 along the radial direction of the first connecting portion 11. Both ends of the deformation groove 14 extend to the first anti - detachment portion 12 and the second anti - detachment portion 13 respectively. The deformation groove 14 absorbs the deformation along the radial direction generated when the first connecting portion 11 and the first anti - detachment portion 12 pass through the connecting post hole 201 on the metal row 20.

[0084] By providing the deformation portion, the dimensional requirements for the first connecting portion and the first anti - detachment portion are relatively low. When the sizes of the first connecting portion and the first anti - detachment portion are slightly larger than the connecting post hole, the first end of the first anti - detachment portion and the first connecting portion can still normally pass through the connecting post hole. And when passing through the connecting post hole axis, it can also ensure the tight fit between the first connecting portion and the connecting post hole, with the outer wall of the first connecting portion closely fitting the inner wall of the connecting post hole, which is conducive to the mating connection and electrical conduction between the first connecting portion and the connecting post hole, ensuring the reliability of voltage acquisition.

[0085] Of course, the deformation groove can also be of other shapes, as long as it can absorb the deformation of the first connecting portion and the first anti-disengagement portion when the first end of the first connecting portion and the first anti-disengagement portion pass through the connecting post hole, ensuring that the first end and the first anti-disengagement portion can smoothly and quickly pass through the connecting post hole without changing the shape and size of the first connecting portion and the first anti-disengagement portion.

[0086] One end of the deformation groove 14 close to the first anti-disengagement portion can extend to the first anti-disengagement portion, as Figure 1 shown, or can pass through the first anti-disengagement portion, as Figure 2 shown. There can be one deformation groove 14, as Figure 2 shown, or two or more can be provided, as Figure 1 shown.

[0087] In this technical solution, the height of the first connecting portion 11 is adapted to the length of the connecting post hole 201 on the metal row 20. After the first end of the first connecting portion and the first anti-disengagement portion pass through the connecting post hole, the first connecting portion is located within the connecting post hole, preventing the first connecting portion from shaking or moving along the axis of the connecting post hole and ensuring the reliable connection between the first connecting terminal and the metal row.

[0088] In this solution, to simplify the structure of the second anti-disengagement portion, the second anti-disengagement portion 13 is set as a disc shape, and the outer diameter is larger than the inner diameter of the connecting post hole to prevent the disc-shaped second anti-disengagement portion from disengaging from the connecting post hole. After the first connecting terminal 1 is connected to the metal row 20, the surface of the disc-shaped second anti-disengagement portion 13 facing the first connecting portion 11 contacts the metal row 20. Setting the second anti-disengagement portion 13 as a disc shape reduces the height of the second anti-disengagement portion along the axis of the connecting post hole, reduces the overall height of the first connecting terminal, and directly reduces the volume of the acquisition device.

[0089] After the first connecting terminal is connected to the metal row, the first connecting portion is located within the connecting post hole. If relative axial rotation occurs between the first connecting portion and the connecting post hole, it will affect the normal operation of the acquisition device and even damage the acquisition device. To solve this problem, in this solution, the connecting terminal further includes an anti-rotation portion 3, and the anti-rotation portion 3 is connected to the first connecting terminal 1. After the first connecting terminal 1 is connected to the metal row 20, the anti-rotation portion 3 restricts the circumferential rotation of the first connecting terminal 1.

[0090] As Figure 1 and Figure 2As shown in the figure, the anti-rotation part 3 includes a plug rod 31. One end of the plug rod 31 is fixedly connected to the second anti-disengagement part 13 and / or the first connection part, and the other end of the plug rod 31 extends in the same direction as the first connection part 11. When the first connection terminal 1 is connected to the metal row 20, the plug rod 31 is synchronously inserted into the anti-rotation hole 202 on the metal row 20. After the plug rod 31 is placed in the anti-rotation hole, the circumferential rotation of the first connection part in the connection column hole is realized. At the same time, the cooperation between the plug rod and the anti-rotation hole 202 can also limit the movement of the first connection terminal in the horizontal direction. As Figure 1 and Figure 2 shown in the figure, one end of the plug rod 31 is fixedly connected to the second anti-rotation part, the other end is bent downward and extends in the same direction as the first connection part, and the plug rod is parallel to the first connection part. Of course, one end of the plug rod 31 can also be fixedly connected to the second anti-rotation part and fixedly connected to the outer surface of the first connection part at the same time, forming a radial convex rib on the outer surface of the first connection part. When the first connection terminal 1 is connected to the metal row 20, the convex rib is synchronously inserted into the anti-rotation hole 202 on the metal row 20. At this time, the anti-rotation hole 202 should be communicated with the connection column hole and set on the inner side wall of the connection column hole. Of course, the plug rod 31 can also be just a convex rib fixedly connected to the outer surface of the first connection part. At this time, when the first connection terminal is connected to the metal row, the convex rib and the first connection part are synchronously inserted into the anti-rotation hole 202 on the metal row 20. At this time, the anti-rotation hole 202 should be communicated with the connection column hole and set on the inner side wall of the connection column hole.

[0091] Of course, the anti-rotation part 3 can also be other structures. For example, a convex block installed on the side of the second anti-rotation part facing down the first connection part. When the connection terminal is assembled with the metal row, the convex block is inserted into the corresponding groove on the metal row, which can also limit the circumferential rotation of the first connection part in the connection column hole. The anti-rotation part 3 can also be a non-circular shoulder socket sleeved on the outside of the first connection part. The anti-rotation hole 202 should be set at the position of the connection column hole facing the second anti-disengagement part end, and the anti-rotation hole is a non-circular hole and is adapted to the anti-rotation part. After the first connection part enters the connection column hole, at this time, the anti-rotation part 3 of the non-circular shoulder socket enters the non-circular hole anti-rotation hole 202 to realize the limitation of the circumferential rotation of the first connection part in the connection column hole.

[0092] In this solution, the connection terminal 10 further includes a second connection terminal 2 for fixedly connecting the wire 30 and electrically conducting with the conducting part. The second connection terminal 2 is fixedly connected to the first connection terminal 1. The metal row is connected and conducted with the first connection terminal, the first connection terminal is connected and conducted with the second connection terminal, the second connection terminal is connected and conducted with the wire, and finally the first connection terminal and the second connection terminal realize the connection and conduction between the metal row and the wire. Applying the connection terminal with the first connection terminal and the second connection terminal with this anti-rotation function to the acquisition device to realize the acquisition work. More specifically, it can realize the voltage acquisition work of the high-voltage metal row in the high-voltage box of the power battery pack.

[0093] In this solution, the second connection terminal 2 includes a wire trough 21 with an arc-shaped cross-section. When the wire 30 is connected to the second connection terminal, the wire is placed in the wire trough 21, and the wire is fixed through the wire trough 21, extending the length of wire fixation and avoiding problems such as wire detachment or deformation of the wire conduction part.

[0094] As Figure 1 and Figure 2 shown, the wire trough 21 includes an end one 211 and an end two 212, and the end one 211 is fixedly connected to the first connection terminal 1. A number of wire pressing pieces 22 are also provided on the wire trough 21. When the second connection terminal 2 is connected to the wire 30, the wire pressing pieces 22 are bent inward and press the wire 30 in the wire trough 21. The wire is fixed in the wire trough 21 through the wire pressing pieces 22, with simple and fast operation and without damaging the wire, realizing a reliable connection between the wire and the second connection terminal.

[0095] As Figure 1 and Figure 2 shown, the end one 211 is smoothly fixedly connected to the second anti-detachment part. At the connection position between the end one 211 and the second anti-detachment part, a connecting rib 23 is also provided, and the connecting rib 23 is connected to both the end one 211 and the second anti-detachment part, realizing strengthening of the connection position between the end one 211 and the second anti-detachment part and avoiding problems such as fracture at the connection position between the end one 211 and the second anti-detachment part.

[0096] As Figure 1 and Figure 2 shown, the end two 212 expands outward in the radial direction. The inner diameter of the end two 212 is greater than the outer diameter of the wire, and the outer end of the end two 212 does not contact the wire, so there is no friction with the wire, the wire is not worn, the service life of the wire is extended, the service life of the connection terminal is extended, the failure rate of the acquisition device is reduced, and it is ensured that the voltage signal adopted by the acquisition device changes.

[0097] In this technical solution, to realize the conduction between the first connection terminal and the metal row, the conduction part is arranged on the first anti-detachment part 12 and / or the second anti-detachment part 13 and / or the first connection part 11. After the first connection terminal 1 is connected to the metal row 20, the conduction part is electrically conductive with the metal row 20. The conduction part can be a certain structure separately installed on the first anti-detachment part 12 and / or the second anti-detachment part 13 and / or the first connection part 11, or a partial structure integrally formed with the first anti-detachment part 12 and / or the second anti-detachment part 13 and / or the first connection part 11, or a certain part on the first anti-detachment part 12 and / or the second anti-detachment part 13 and / or the first connection part 11.

[0098] To simplify the structure of the conduction part and further simplify the structure of the first anti - detachment part 12 and / or the second anti - detachment part 13 and / or the first connection part 11, in this solution, the first connection terminal is made of wire material. After the first connection terminal is assembled with the metal row, the first connection terminal itself is electrically conductive with the metal row. That is, at this time, the conduction part is a partial structure of the first connection terminal's own structure. That is, the second anti - detachment part 13 and / or the first connection part 11 and / or the first anti - detachment part are made of conductive material. After the first connection terminal 1 is connected to the metal row 20, the contact part of the second anti - detachment part 13 and / or the first connection part 11 and / or the first anti - detachment part with the metal row 20 forms the conduction part.

[0099] Common conductive materials include metal materials such as copper, aluminum, and silver. And because in this solution, the first connection terminal is conductive with the metal row, the conductive material used to prepare the first connection terminal is preferably the same metal material as the metal row.

[0100] Based on the above solution, the metal row generally uses a conductive metal with better electrical conductivity, such as silver, copper, aluminum, tungsten, etc. Considering the manufacturing cost and usage cost comprehensively, the metal row is preferably made of copper material. Correspondingly, the first connection terminal is also made of copper material.

[0101] In this solution, to simplify the production process of the connection terminal, the entire connection terminal is made of copper material. After the connection terminal is assembled with the metal row, the contact area between the first connection part and the second anti - detachment part and the metal row is large. The connection between the connection terminal and the metal row is mainly conducted through the first connection part and the second anti - detachment part made of copper material. The first connection terminal and the second connection terminal are integrally formed by copper material, and the wire is installed and conducted with the second connection terminal, that is, the conduction between the wire and the metal row is realized.

[0102] In this solution, to facilitate the rapid assembly of the connection terminal 10 and the metal row, as Figure 5 shown, connection post holes 201 and anti - rotation holes 202 are provided on the metal row 20. The connection post holes 201 and the anti - rotation holes 202 are respectively adapted to the first connection part 11 and the anti - rotation part 3. The first connection part 11 and the anti - rotation part 3 are respectively inserted into the connection post holes 201 and the anti - rotation holes 202.

[0103] Based on the above solution, when the connection terminal is assembled with the bus bar, the first connection portion 11 and the anti-rotation portion 3 are respectively inserted into the connection post hole 201 and the anti-rotation hole 202 at the same time. The assembly operation is simple, and no other tools or fasteners are required during the whole assembly process. When the connection terminal is assembled with the bus bar, it is a direct connection between the connection terminal 10 and the bus bar, and there is no need to use connection bolts and nuts for connection and fixation. On the one hand, the connection operation is simpler and faster, and on the other hand, the torque back-off situation of the connection bolts and nuts is avoided, reducing the risk of loosening or connection failure after the connection terminal and the bus bar are connected. Moreover, when the connection terminal 10 is connected to the bus bar, there is no need to use connection bolts and nuts for connection and fixation, reducing the number of bolts and nuts used in the assembly process, reducing the assembly difficulty, and reducing the risk of assembly errors.

[0104] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches are also regarded as the protection scope of the present utility model.

Claims

1. A connection terminal, characterized in that: It includes a first connection terminal that is connected to a bus bar during use. A conduction part is provided on the first connection terminal. After the first connection terminal is connected to the bus bar, the conduction part is electrically conductive with the bus bar; The first connection terminal includes a first anti-disengagement part, a second anti-disengagement part, and a first connection part; The first connection part has a first end and a second end, and the first anti-disengagement part and the second anti-disengagement part are respectively connected to the first end and the second end; When the first connection terminal is connected to the bus bar, the first end or the second end is inserted through and passes through a connection post hole on the bus bar, and the second end or the first end remains outside the bus bar; After the first connection terminal is connected to the bus bar, the first anti-disengagement part and the second anti-disengagement part respectively limit the first connection part from disengaging from the bus bar from the first end or the second end.

2. The connection terminal according to claim 1, wherein: The first connection part is columnar; and the outer diameter of the first connection part is adapted to the inner diameter of the connection post hole on the bus bar.

3. The connection terminal according to claim 2, wherein: Both the first anti-disengagement part and the second anti-disengagement part are integrally and fixedly connected to the first end and the second end respectively. The outer diameter of the first anti-disengagement part is slightly larger than the inner diameter of the connection post hole on the bus bar. When the first connection terminal is connected to the bus bar, the first anti-disengagement part and the first end sequentially pass through the connection post hole on the bus bar; The outer diameter of the second anti-disengagement part is larger than the inner diameter of the connection post hole on the bus bar.

4. The connection terminal according to claim 2 or 3, characterized in that: The first connection part is cylindrical, the first anti-disengagement part is spherical, the outer diameter of the cylindrical first connection part is adapted to the inner diameter of the connection post hole on the bus bar, and the outer diameter of the spherical first anti-disengagement part is slightly larger than the outer diameter of the cylindrical first connection part.

5. The connection terminal according to claim 4, characterized in that: A deformation part is provided on the first connection part or on the first connection part and the first anti-disengagement part; When the first connection part or the first connection part and the first anti-disengagement part pass through the connection post hole on the bus bar, the deformation part absorbs the deformation generated by the first connection part or the first connection part and the first anti-disengagement part being squeezed by the connection post hole on the bus bar.

6. The connection terminal according to claim 5, wherein: The deformation part includes a deformation groove. The deformation groove is provided on the outer peripheral surface of the first connection part and penetrates the first connection part along the radial direction of the first connection part. Both ends of the deformation groove extend to the first anti-disengagement part and the second anti-disengagement part respectively. The deformation groove absorbs the radial deformation generated when the first connection part and the first anti-disengagement part pass through the connection post hole on the bus bar.

7. The connection terminal according to claim 1 or 2 or 3, characterized in that: The height of the first connection part is adapted to the length of the connection post hole on the bus bar; The second anti-disengagement part is disc-shaped. After the first connection terminal is connected to the bus bar, the surface of the disc-shaped second anti-disengagement part facing the first connection part contacts the bus bar.

8. The connection terminal according to claim 1, characterized in that: It further includes an anti-rotation part, and the anti-rotation part is connected to the first connection terminal; after the first connection terminal is connected to the bus bar, the anti-rotation part restricts the circumferential rotation of the first connection terminal.

9. The connection terminal according to claim 8, characterized in that: The anti-rotation part includes a plug rod. One end of the plug rod is fixedly connected to the second anti-disengagement part and / or the first connection part, and the other end of the plug rod extends in the same direction as the first connection part; When the first connection terminal is connected to the bus bar, the insertion rod is synchronously inserted into the anti-rotation hole on the bus bar.

10. The connection terminal according to claim 1, characterized in that: It further includes a second connection terminal for fixedly connecting a wire and being electrically connected to the conduction part, and the second connection terminal is fixedly connected to the first connection terminal.

11. The connection terminal according to claim 10, characterized in that: The second connection terminal includes a wire trough with an arc-shaped cross section. The wire trough includes an end one and an end two, and the end one is fixedly connected to the first connection terminal; A plurality of wire pressing pieces are further arranged on the wire trough. When the second connection terminal is connected to the wire, the wire pressing pieces are bent inward to press the wire in the wire trough.

12. The connection terminal according to claim 11, wherein: The end one is smoothly and fixedly connected to the second anti-disengagement part; the end two expands outward in the radial direction.

13. The connection terminal according to claim 1 or 10, characterized in that: The conduction part is arranged on the first anti-disengagement part and / or the second anti-disengagement part and / or the first connection part. After the first connection terminal is connected to the bus bar, the conduction part is electrically connected to the bus bar.

14. The connection terminal according to claim 13, characterized in that: The second anti-disengagement part and / or the first connection part and / or the first anti-disengagement part are made of a conductive material; after the first connection terminal is connected to the bus bar, the contact part of the second anti-disengagement part and / or the first connection part with the bus bar forms the conduction part.

15. A collection device, characterized in that, It includes the connection terminal according to any one of claims 1 to 14, as well as a wire and / or a bus bar, and the connection terminal is connected to the wire and / or the bus bar and is electrically connected; The first connection terminal is connected to the bus bar and is electrically connected and / or the second connection terminal is connected to the wire and is electrically connected.

16. The acquisition device according to claim 15, characterized in that, Connection column holes and anti-rotation holes are arranged on the bus bar. The connection column holes and the anti-rotation holes respectively match the first connection part and the anti-rotation part, and the first connection part and the anti-rotation part are respectively inserted into the connection column holes and the anti-rotation holes.

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