Connection terminal and acquisition device

Abstract

Disclosed in the present application are a connection terminal and an acquisition device. The connection terminal comprises a first connection terminal, which comprises a first anti-disengagement portion, a second anti-disengagement portion and a first connecting portion, wherein the first anti-disengagement portion and the second anti-disengagement portion are respectively connected to two ends of the first connection terminal; and after the first connection terminal is connected to a metal busbar, the first anti-disengagement portion and the second anti-disengagement portion respectively prevent the first connecting portion from disengaging from the metal bar from the two ends.

Description

A connection terminal and a collection device

[0001] The present application claims priority to the Chinese patent application No. 2024219102434 filed on August 07, 2024 and to the Chinese patent application No. 2024110830125 filed on August 07, 2024 with the Chinese Patent Office, the contents of which are hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of power battery pack high-voltage box, in particular to a connection terminal and a collection device.

[0003] Power battery pack, commonly referred to as the battery system used to store electrical energy in electric vehicles, is one of the core components of electric vehicles. The power battery pack is usually composed of multiple battery units (such as lithium batteries), which are packaged together and monitored and controlled by the battery management system (BMS) to ensure the safe operation and optimal performance of the battery.

[0004] The power battery pack high-voltage box, also known as high-voltage distribution box or high-voltage control unit, is a key component in electric vehicles for managing high-voltage electrical systems. It is mainly responsible for electrical connection and control between the battery pack and high-voltage electrical equipment such as motors, chargers, etc. The high-voltage box usually contains circuit breakers, contactors, fuses, relays and other protection and control components to ensure the safe and stable operation of the system.

[0005] The relationship between the power battery pack and the high-voltage box is very close. The power battery pack provides electrical energy, while the high-voltage box is responsible for safely and effectively distributing this electrical energy to various high-voltage electrical equipment in electric vehicles. Together they form the power supply system of electric vehicles and are the basis for the normal operation of electric vehicles. The battery management system (BMS) plays a coordinating role in monitoring the state of the battery pack and controlling the operation of the entire system through communication with the high-voltage box, and the copper bar voltage collection structure is an important connection structure between the battery management system (BMS) and the high-voltage box.

[0006] In related battery pack designs, the high-voltage box copper bar voltage collection usually uses a round terminal as a voltage collection carrier, the round terminal is connected with the copper bar and electrically conductive, and a bolt and a nut are needed to fasten the round terminal. TECHNICAL PROBLEM

[0007] When the round terminal is connected with the copper bar, the bolt and nut torque may be removed, which may cause voltage collection failure and thus inaccurate voltage collection. In addition, during the assembly of the round terminal and the copper bar, the assembly error may occur due to too many types of bolts, affecting the normal operation of the vehicle, and even causing safety accidents. Technical solutions

[0008] In a first aspect, the application provides a connection terminal, comprising a first connection terminal connected with a metal bar in use, a conducting part is arranged on the first connection terminal, and the conducting part is electrically connected with the metal bar after the first connection terminal is connected with the metal bar.

[0009] The first connection terminal comprises a first anti-disengagement part, a second anti-disengagement part and a first connection part.

[0010] 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 connected with the first end and the second end respectively.

[0011] When the first connection terminal is connected with the metal bar, the first end or the second end is inserted through a connecting post hole on the metal bar, and the second end or the first end remains outside the metal bar.

[0012] After the first connection terminal is connected with the metal bar, the first anti-disengagement part and the second anti-disengagement part limit the first connection part from disengaging from the metal bar from the first end or the second end respectively.

[0013] In a second aspect, the application provides a collection device, comprising the above connection terminal and a wire and / or a metal bar; the connection terminal is connected with and electrically connected with the wire and / or the metal bar.

[0014] The first connection terminal is connected with and electrically connected with the metal bar, and / or the second connection terminal is connected with and electrically connected with the wire. Advantages

[0015] 1. A first connection part is arranged in the first connection terminal, and when the first connection terminal is connected with the metal bar, the first connection part passes through a connecting post hole on the metal bar to realize the connection between the connection terminal and the metal bar. In the connection between the connection terminal and the metal bar, no bolt or nut is needed for fixing, avoiding the situation that the connection fails due to the torque back-off of the bolt or nut.

[0016] 2. The first anti-disengagement part and the second anti-disengagement part are respectively used to limit the first connection part from disengaging from the metal bar from both ends, ensuring that the connection between the connection terminal and the metal bar without using a bolt or nut for fixing is reliable, and there is no risk of the connection terminal disengaging from the metal bar. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic diagram of an embodiment of a connection terminal according to the application.

[0018] Fig. 2 is a structural schematic diagram of another embodiment of a connection terminal according to the application.

[0019] Fig. 3 is a schematic structural diagram of an embodiment of a collecting device according to the present application.

[0020] Fig. 4 is a front view of Fig. 3.

[0021] Fig. 5 is an exploded view of Fig. 3.

[0022] In the drawings, the reference signs have the following meanings:

[0023] 10, connecting terminal; 20, metal strip; 201, connecting column hole; 202, anti-rotation hole; 30, wire;

[0024] 1, first connecting terminal; 11, first connecting part; 12, first anti-falling part; 13, second anti-falling part; 14, deformation groove; 2, second connecting terminal; 21, wire supporting groove; 211, end part one; 212, end part two; 22, wire pressing piece; 23, connecting rib; 3, anti-rotation part; 31, insertion rod. Embodiment of the present application

[0025] Referring to Figs. 3 to 5, a structure of a collecting device according to the present application is disclosed. The collecting device comprises a wire 30 and / or a metal strip 20 and a connecting terminal 10. The metal strip 20 and the wire 30 in the collecting device at least comprise one or both. The connecting terminal 10 is connected with the metal strip 20 and electrically conducted and / or the connecting terminal 10 is connected with the wire 30 and electrically conducted.

[0026] In the present scheme, the connecting terminal 10 is directly connected with the metal strip 20 through special structural design, without the aid of connecting bolts and connecting nuts for connection and fixation. On the one hand, this makes the connection operation simple and fast, and on the other hand, it avoids the torque back-off of the connecting bolts and nuts, reducing the risk of loosening or connection failure of the connecting terminal and the metal strip after connection. In addition, the connecting terminal 10 does not need to be connected and fixed with the aid of connecting bolts and connecting nuts, reducing the number of bolts and nuts used in the assembly process, reducing the assembly difficulty and reducing the risk of assembly errors.

[0027] In order to facilitate the understanding of the structure of the connecting terminal 10 by those skilled in the art, the structure of the connecting terminal 10 will be described in detail below in combination with Figs. 1 and 2.

[0028] Referring to Figs. 1 and 2, a structural diagram of a connecting terminal according to the present application is disclosed.

[0029] In the present technical scheme, a connecting terminal 10 comprises a first connecting terminal 1 connected with a metal strip 20 in use. The first connecting terminal 1 is provided with a conducting part, which is electrically conducted with the metal strip 20 after the first connecting terminal 1 is connected with the metal strip 20.

[0030] The first connecting terminal 1 comprises a first anti-disengagement part 12, a second anti-disengagement part 13 and a first connecting part 11. The first connecting part 11 has a first end and a second end, and the first anti-disengagement part 12 and the second anti-disengagement part 13 are connected to the first end and the second end respectively.

[0031] When the first connecting terminal 1 is connected to the metal strip 20, the first end or the second end is inserted through the connecting post hole 201 on the metal strip 20, and the second end or the first end remains outside the metal strip 20. After the first connecting terminal 1 is connected to the metal strip 20, the first anti-disengagement part 12 and the second anti-disengagement part 13 limit the first connecting part 11 from disengaging from the metal strip 20 from the first end or the second end respectively.

[0032] The "in use" mentioned in the above scheme includes when the connecting terminal 10 is assembled with the metal strip, and also includes after the connecting terminal is assembled with the metal strip. The first connecting terminal is arranged on the connecting terminal, and the first connecting terminal 1 is connected to the metal strip when the connecting terminal is assembled with the metal strip and / or after the connecting terminal is assembled with the metal strip. The connection here includes direct connection to the metal strip and indirect connection to the metal strip, and includes fixed connection and non-fixed connection.

[0033] The "in connection" mentioned in the above scheme refers to the assembly process of the connecting terminal 10 and the metal strip.

[0034] The "after connection" mentioned in the above scheme refers to after the assembly of the connecting terminal 10 and the metal strip is completed.

[0035] In the above scheme, the through part is arranged to realize the electrical conduction between the connecting terminal 10 and the metal strip, and to realize the collection and transmission of the voltage signal.

[0036] In the above scheme, the first anti-disengagement part 12 and the second anti-disengagement part 13 are connected to the first end and the second end respectively, including the following cases: the first anti-disengagement part 12 and the second anti-disengagement part 13 are fixedly connected to the first end and the second end respectively; or, the first anti-disengagement part 12 and the second anti-disengagement part 13 are detachably connected to the first end and the second end respectively; or, the first anti-disengagement part is fixedly connected to the first end, and the second anti-disengagement part is detachably connected to the second end; or, the first anti-disengagement part is detachably connected to the first end, and the second anti-disengagement part is fixedly connected to the second end. The "detachable connection" here means that one structure is detached from another structure without damaging the two structures connected to each other, and can be normally installed back when needed, and realizes the original function.

[0037] In the above scheme, when the first connecting terminal 1 is connected with the metal strip 20, the first end or the second end is inserted through the connecting post hole 201 on the metal strip 20, and the second end or the first end is reserved outside the metal strip 20. It can be that the first end is inserted through the connecting post hole 201 on the metal strip 20, and the second end is reserved outside the metal strip 20. Of course, it can also be that the second end is inserted through the connecting post hole 201 on the metal strip 20, and the first end is reserved outside the metal strip 20.

[0038] In the above scheme, after the first connecting terminal 1 is connected with the metal strip 20, the first anti-disengagement part 12 and the second anti-disengagement part 13 respectively limit the first connecting part 11 from disengaging from the metal strip 20 by the first end or the second end. In combination with the description in the above paragraph and the paragraph above, it can be that the first end is inserted through the connecting post hole on the metal strip and connected with the first anti-disengagement part, and the second anti-disengagement part is reserved outside the connecting post hole; it can also be that the second end is inserted through the connecting post hole on the metal strip and connected with the second anti-disengagement part, and the first anti-disengagement part is reserved outside the connecting post hole; it can also be that the first anti-disengagement part and the first end are sequentially inserted through the connecting post hole, and the second end is not inserted through the connecting post hole, and the second end and the second anti-disengagement part are reserved outside the connecting post hole; or it can also be that the second anti-disengagement part and the second end are sequentially inserted through the connecting post hole, and the first end is not inserted through the connecting post hole, and the first end and the first anti-disengagement part are reserved outside the connecting post hole.

[0039] In the above scheme, after the first connecting terminal 1 is connected with the metal strip 20, the first anti-disengagement part 12 and the second anti-disengagement part 13 respectively limit the first connecting part 11 from disengaging from the metal strip 20 by the first end or the second end. The main way for the first anti-disengagement part 12 and the second anti-disengagement part 13 to limit the first connecting terminal from disengaging by the first end or the second end is that the shapes of the first anti-disengagement part 12 and the second anti-disengagement part 13 are inconsistent with the shape of the connecting post hole, and interference occurs between the first anti-disengagement part or the second anti-disengagement part and the connecting post hole when the first anti-disengagement part or the second anti-disengagement part passes through the connecting post hole, resulting in that the first anti-disengagement part or the second anti-disengagement part cannot disengage from the connecting post hole; or the shapes of the first anti-disengagement part 12 and / or the second anti-disengagement part 13 are consistent or inconsistent with the shape of the connecting post hole, but at least part of the position has a size larger than the inner diameter of the connecting post hole, and cannot disengage from the connecting post hole.

[0040] In the above scheme, when the first connecting terminal 1 is connected with the metal strip 20, the first end or the second end is inserted through the connecting post hole 201 on the metal strip 20, and the second end or the first end is reserved outside the metal strip 20, that is, when the first connecting terminal is connected with the metal strip, the first connecting part is directly connected with the metal strip, and no other structure is used to realize connection or assist connection.

[0041] From the above technical solutions and the above description, when the first connecting terminal is connected with the metal bar, the first connecting part 11 is directly connected with the metal bar 20, and the connection can be achieved by inserting the first connecting part into the metal bar. At the same time, the first anti-disengagement part and the second anti-disengagement part prevent the first connecting part connected with the metal bar from disengaging from the metal bar. The whole connection operation process is simple and fast, and no bolts, nuts or other connecting fasteners are needed during the connection process and after the connection. In the connection of the connecting terminal and the metal bar, no bolts or nuts are needed for fixing and anti-disengagement, which avoids the situation that the connection fails due to the torque of the bolts and nuts. The first anti-disengagement part and the second anti-disengagement part are respectively used to limit the first connecting part from disengaging from the metal bar at both ends, which ensures the reliable connection of the connecting terminal and the metal bar without using bolts or nuts, and avoids the risk of disengagement of the connecting terminal from the metal bar. In addition, in the connection of the connecting terminal and the metal bar, no bolts or nuts are needed for fixing, which reduces the use of bolts and nuts in the acquisition device, reduces the cost, and also avoids the problem of wrong or incorrect installation of too many different types of bolts and nuts in the use process. In the present scheme, through the design of the first connecting terminal structure, the first connecting terminal is quickly connected with the metal bar, the reliable connection of the first connecting terminal and the metal bar is ensured, the use of bolts and nuts is reduced, and the risk of assembly error and work failure is reduced.

[0042] In some embodiments, the first connecting part 11 is in a columnar shape; and the outer diameter of the first connecting part 11 is adapted to the inner diameter of the connecting column hole 201 on the metal bar 20.

[0043] In some embodiments, the outer diameter of the first connecting part 11 is adapted to the inner diameter of the connecting column hole 201 on the metal bar 20, which includes the following cases: the shape of the first connecting part 11 is similar to, the same as, or different from the shape of the connecting column hole 201, and the outer diameter of the first connecting part 11 is adapted to the inner diameter of the connecting column hole 201 on the metal bar 20, which ensures that the first connecting part can pass through the connecting column hole. The outer diameter of the first connecting part is adapted to the inner diameter of the connecting column hole 201 on the metal bar 20, mainly including that the outer diameter of the first connecting part is smaller than or slightly smaller than the inner diameter of the connecting column hole, or the outer diameter of the first connecting part is equal to the inner diameter of the connecting column hole. Of course, "equal" here does not mean that the outer diameter value of the first connecting part and the inner diameter value of the connecting column hole are exactly the same, but the inner diameter value of the first connecting part and the connecting column hole is equal within the allowable range of tolerance, which ensures that the first connecting part can pass through the connecting column hole.

[0044] In some embodiments, to simplify the connection and assembly operation of the first connecting terminal and the metal strip, ensure the reliable connection of the connecting terminal and the metal strip after connection, and avoid the problem of loosening or falling of the connecting terminal itself, in some embodiments, the first anti-falling part 12 and the second anti-falling part 13 are integrally fixed with the first end and the second end respectively. When the first connecting terminal is connected with the metal strip, the first anti-falling part and the first connecting part or the second anti-falling part and the first connecting part can be directly inserted through the connecting column hole, avoiding the installation and assembly of the first anti-falling part and the second anti-falling part.

[0045] In some embodiments, the first anti-falling part 12 and the second anti-falling part 13 are integrally fixed with the first end and the second end respectively, and the outer diameter of the first anti-falling part 12 is slightly larger than the inner diameter of the connecting column hole 201 on the metal strip 20. When the first connecting terminal 1 is connected with the metal strip 20, the first anti-falling part 12 and the first end are sequentially inserted through the connecting column hole 201 on the metal strip 20. The outer diameter of the first anti-falling part 12 is slightly larger than the inner diameter of the connecting column hole 201 on the metal strip 20. The size range of "slightly larger" herein can ensure that the first anti-falling part can be inserted through the connecting column hole on the metal strip, and also ensure that the first anti-falling part will not fall out of the connecting column hole on the metal strip during work. When the first connecting terminal is connected with the metal strip, the first anti-falling part and the first end are sequentially inserted through the connecting column hole on the metal strip. The first connecting part is retained in the connecting column hole and connected with the metal strip, while the second end and the second anti-falling part are retained outside the connecting column hole.

[0046] In some embodiments, to avoid the second anti-falling part from falling out of the connecting column hole, the first anti-falling part 12 and the second anti-falling part 13 are integrally fixed with the first end and the second end respectively, and the outer diameter of the second anti-falling part 13 is greater than the inner diameter of the connecting column hole 201 on the metal strip 20. When the first connecting terminal is assembled with the metal strip, the first anti-falling part and the first end are sequentially inserted through the connecting column hole on the metal strip. The first connecting part is connected with the connecting column hole to realize the assembly of the first connecting terminal and the metal strip. At this time, the second end of the first connecting part does not pass through the connecting column hole. At this time, to ensure that the second end is always retained outside the connecting column hole and does not enter or pass through the connecting column hole, it is necessary to ensure that the outer diameter of the second anti-falling part is greater than the inner diameter of the connecting column hole 201 on the metal strip 20, so that the second anti-falling part will not enter or pass through the connecting column hole under the vibration, shaking or external pressure of itself.

[0047] In some embodiments, to simplify the structure of the first connecting part, the first connecting part 11 can be in a cylindrical shape, a semi-cylindrical shape or a straight prism shape. The first connecting part 11 is in a cylindrical shape, a semi-cylindrical shape or a straight prism shape, which facilitates the processing and forming of the first connecting part, reduces the manufacturing cost of the first connecting part, and also reduces the difficulty of forming the connecting column hole and the assembly difficulty of the first connecting part and the metal strip.

[0048] In order to simplify the structure of the first connecting part or the first connecting terminal, reduce the friction between the first connecting part and the metal strip, improve the fitting degree between the first connecting part and the connecting column hole, increase the contact area between the first connecting part and the inner wall of the connecting column hole, and improve the connection stability between the first connecting part and the metal strip, in some embodiments, as shown in FIGS. 1 and 2, the first connecting part 11 is in a cylindrical shape. When the first connecting part is in a cylindrical shape, the connecting column hole on the metal strip is also provided as a cylindrical through hole. At this time, the outer diameter of the first connecting part 11 in a cylindrical shape is adapted to the inner diameter of the connecting column hole 201 on the metal strip 20, so that the first connecting part enters the connecting column hole and is in clearance fit, transition fit or interference fit with the connecting column hole. In order to ensure that the first connecting part and the connecting column hole are tightly fitted, and to avoid problems such as shaking and jitter of the first connecting terminal after being assembled with the metal strip, the first connecting part in a cylindrical shape is in interference fit with the connecting column hole in a cylindrical hole shape.

[0049] In some embodiments, in order to simplify the structure of the first anti-falling part, as shown in FIGS. 1 and 2, the first anti-falling part 12 is in a spherical shape, and the outer diameter of the first anti-falling part 12 in a spherical shape is slightly larger than the outer diameter of the first connecting part 11 in a cylindrical shape. When the first connecting terminal is assembled with the metal strip, the first anti-falling part and the first end of the first connecting part pass through the connecting column hole on the metal strip in sequence. The outer diameter of the first anti-falling part 12 is slightly larger than the outer diameter of the first connecting part 11 in a cylindrical shape. The standard of "slightly larger" here is that the first anti-falling part can pass through the connecting column hole under the action of external force, but under the condition of not applying external force, it cannot fall out of the connecting column hole by itself only under the action of its own gravity, shaking during work or turnover, etc., that is, the first anti-falling part achieves the anti-falling effect.

[0050] In order to facilitate the first anti-falling part to pass through the connecting column hole under the action of external force, and also facilitate the first connecting part in a cylindrical shape to enter the connecting column hole and be adapted to the connecting column hole, in some embodiments, the first connecting part and the first anti-falling part are both provided in a hollow shape. In this way, when the first anti-falling part and the first end of the first connecting part pass through the connecting column hole in sequence, the first connecting part and the first anti-falling part can have certain radial rigidity deformation, ensuring that the first anti-falling part and the first end pass through the connecting column hole smoothly without damaging the first connecting part and the first anti-falling part. When the first connecting part is in a cylindrical shape, a semi-cylindrical shape or a straight prism shape, the first connecting part and the first anti-falling part can both be provided in a hollow shape.

[0051] In some embodiments, to ensure that the first connecting portion and the first anti-disengagement portion can more smoothly pass through the connecting column hole, and to avoid plastic deformation of the first end of the first connecting portion and the first anti-disengagement portion when passing through the connecting column hole, a deformation portion is arranged on the first connecting portion 11 or the first connecting portion 11 and the first anti-disengagement portion 12. When the first connecting portion 11 or the first connecting portion 11 and the first anti-disengagement portion 12 pass through the connecting column hole 201 on the metal row 20, the deformation portion absorbs the deformation of the first connecting portion 11 or the first connecting portion 11 and the first anti-disengagement portion 12 caused by the extrusion of the connecting column hole 201 on the metal row 20.

[0052] The deformation portion absorbs the deformation of the first connecting portion 11 or the first connecting portion 11 and the first anti-disengagement portion 12 caused by the extrusion of the connecting column hole 201 on the metal row 20, so that during the process of the first anti-disengagement portion and the first end of the first connecting portion passing through the connecting column hole, the temporary deformation generated can be restored after passing through the connecting column hole, avoiding damage to the structure of the first anti-disengagement portion and the first connecting portion, and avoiding changes in the shape and size of the first anti-disengagement portion and the first connecting portion. After the deformation portion is arranged, the first anti-disengagement portion and the first end of the first connecting portion can smoothly pass through the connecting column hole, and reversely, the first connecting terminal after assembly can also 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 collection device using the connection terminal, reducing the maintenance and repair cost of the collection device, and reducing the use cost of the collection device. The application of the collection device in the high-voltage voltage collection of the high-voltage box of the power battery pack reduces the high-voltage voltage collection cost of the high-voltage box of the power battery pack.

[0053] As shown in FIGS. 1 and 2, the deformation portion includes a deformation groove 14 arranged on the outer circumferential surface of the first connecting portion 11 and penetrating the first connecting portion 11 along the radial direction of the first connecting portion 11, and the two ends of the deformation groove 14 extend to the first anti-disengagement portion 12 and the second anti-disengagement portion 13, respectively. The deformation groove 14 absorbs the deformation of the first connecting portion 11 and the first anti-disengagement portion 12 along the radial direction when passing through the connecting column hole 201 on the metal row 20.

[0054] By arranging the deformation portion, the size requirement of the first connecting portion and the first anti-disengagement portion is lower, and when the size of the first connecting portion and the first anti-disengagement portion is slightly larger than that of the connecting column hole, the first end of the first anti-disengagement portion and the first connecting portion can also normally pass through the connecting column hole, and when passing through the connecting column hole, it can also ensure that the first connecting portion is tightly fitted with the connecting column hole, and the outer wall of the first connecting portion is tightly fitted with the inner wall of the connecting column hole, which is beneficial to the cooperative connection and electrical conduction of the first connecting portion and the connecting column hole, and ensures the reliability of voltage collection.

[0055] Of course, the deformation groove can also be other shapes, as long as it can absorb the deformation of the first connecting part and the first anti-extraction part when the first end of the first connecting part and the first anti-extraction part pass through the connecting column hole, ensure that the first end and the first anti-extraction part pass through the connecting column hole smoothly and quickly, and do not change the shape and size of the first connecting part and the first anti-extraction part.

[0056] The end of the deformation groove 14 close to the first anti-extraction part can extend onto the first anti-extraction part, as shown in Figure 1, or can pass through the first anti-extraction part, as shown in Figure 2. The deformation groove 14 can be provided with one, as shown in Figure 2, or two or more, as shown in Figure 1.

[0057] In some embodiments, the height of the first connecting part 11 is adapted to the length of the connecting column hole 201 on the metal row 20, and after the first end of the first connecting part and the first anti-extraction part pass through the connecting column hole, the first connecting part is located in the connecting column hole, avoiding the first connecting part from shaking or moving along the axis of the connecting column hole, and ensuring the reliable connection of the first connecting terminal with the metal row.

[0058] In some embodiments, to simplify the structure of the second anti-extraction part, the second anti-extraction part 13 is provided in a disc shape, and the outer diameter is greater than the inner diameter of the connecting column hole, preventing the disc-shaped second anti-extraction part from being separated from the connecting column hole. After the first connecting terminal 1 is connected with the metal row 20, the surface of the disc-shaped second anti-extraction part 13 facing the first connecting part 11 is in contact with the metal row 20. By providing the second anti-extraction part 13 in a disc shape, the height of the second anti-extraction part along the axis of the connecting column hole is reduced, and the overall height of the first connecting terminal is reduced, directly reducing the volume of the collection device.

[0059] After the first connecting terminal is connected with the metal row, the first connecting part is located in the connecting column hole, and if relative axial rotation occurs between the first connecting part and the connecting column hole, it will affect the normal operation of the collection device, and even damage the collection device. To solve this problem, in some embodiments, the connecting terminal further comprises an anti-rotation part 3 connected with the first connecting terminal 1. After the first connecting terminal 1 is connected with the metal row 20, the anti-rotation part 3 limits the rotation of the first connecting terminal 1 in the circumferential direction.

[0060] As shown in FIG. 1 and FIG. 2, the anti-rotation part 3 includes a plug rod 31, one end of the plug rod 31 is fixedly connected with the second anti-escape part 13 and / or the first connecting part, and the other end of the plug rod 31 extends in the same direction with the first connecting part 11. When the first connecting terminal 1 is connected with the metal strip 20, the plug rod 31 is inserted into the anti-rotation hole 202 on the metal strip 20 synchronously, and after the plug rod 31 is placed in the anti-rotation hole, the rotation of the first connecting part in the circumferential direction in the connecting column hole is realized, and the plug rod cooperated with the anti-rotation hole 202 can also limit the movement of the first connecting terminal in the horizontal direction. As shown in FIG. 1 and FIG. 2, one end of the plug rod 31 is fixedly connected with the second anti-rotation part, and the other end is downwardly bent and extends in the same direction with the first connecting part, and the plug rod is parallel with the first connecting part. Of course, the plug rod 31 can also be one end fixedly connected with the second anti-rotation part and fixedly connected on the outer surface of the first connecting part, and a radial protrusion is formed on the outer surface of the first connecting part, and when the first connecting terminal 1 is connected with the metal strip 20, the protrusion is inserted into the anti-rotation hole 202 on the metal strip 20 synchronously, at this time, the anti-rotation hole 202 should be communicated with the connecting column hole and arranged on the inner side wall of the connecting column hole. Of course, the plug rod 31 can also be only the protrusion fixedly connected on the outer surface of the first connecting part, at this time, when the first connecting terminal is connected with the metal strip, the protrusion is inserted into the anti-rotation hole 202 on the metal strip 20 synchronously with the first connecting part, at this time, the anti-rotation hole 202 should be communicated with the connecting column hole and arranged on the inner side wall of the connecting column hole.

[0061] Of course, the anti-rotation part 3 can also be other structures, such as a protrusion installed on the side of the first connecting part facing the second anti-rotation part downward, when the connecting terminal is assembled with the metal strip, the protrusion is inserted into the corresponding groove on the metal strip, and the rotation of the first connecting part in the circumferential direction in the connecting column hole can also be limited. The anti-rotation part 3 can also be a non-circular shoulder platform sleeved on the outside of the first connecting part, the anti-rotation hole 202 should be arranged at the position of the connecting column hole facing the second anti-escape part end, and the anti-rotation hole is a non-circular hole and is adapted to the anti-rotation part, after the first connecting part enters the connecting column hole, at this time, the anti-rotation part 3 of the non-circular shoulder platform enters the non-circular hole anti-rotation hole 202, and the rotation of the first connecting part in the circumferential direction in the connecting column hole is limited.

[0062] In some embodiments, the connecting terminal 10 further includes a second connecting terminal 2 for fixedly connecting the wire 30 and electrically connecting with the conducting part, and the second connecting terminal 2 is fixedly connected with the first connecting terminal 1. The metal strip is connected with the first connecting terminal and conducts electricity, the first connecting terminal is connected with the second connecting terminal and conducts electricity, the second connecting terminal is connected with the wire and conducts electricity, and finally the first connecting terminal and the second connecting terminal realize the connection and conduction of the metal strip and the wire. The connecting terminal with the first connecting terminal and the second connecting terminal of the present application is applied in the collecting device to realize the collecting work, and more specifically, the high-voltage metal strip voltage collecting work in the high-voltage box of the power battery pack can be realized.

[0063] In some embodiments, the second connecting terminal 2 comprises a wire receiving groove 21 with an arc-shaped cross section, which is used to place the wire 30 in the wire receiving groove 21 when the wire 30 is connected to the second connecting terminal, fix the wire 30 through the wire receiving groove 21, extend the length of the wire fixation, and avoid the problems of wire falling off or wire conduction deformation.

[0064] As shown in FIGS. 1 and 2, the wire receiving groove 21 comprises an end part one 211 and an end part two 212, and the end part one 211 is fixedly connected to the first connecting terminal 1. The wire receiving groove 21 is further provided with a plurality of wire pressing pieces 22, which are bent inward and press the wire 30 in the wire receiving groove 21 when the second connecting terminal 2 is connected to the wire 30. The wire is fixed in the wire receiving groove 21 through the wire pressing pieces 22, which is simple and fast to operate and does not damage the wire. The reliable connection between the wire and the second connecting terminal is achieved.

[0065] As shown in FIGS. 1 and 2, the end part one 211 is fixedly connected to the second anti-falling part, and a connecting rib 23 is arranged at the connecting position of the end part one 211 and the second anti-falling part. The connecting rib 23 is connected to the end part one 211 and the second anti-falling part, which strengthens the connecting position of the end part one 211 and the second anti-falling part and avoids the problems of breakage at the connecting position.

[0066] As shown in FIGS. 1 and 2, the end part two 212 is expanded outward along the radial direction, and the inner diameter of the end part two 212 is greater than the outer diameter of the wire. The outer end of the end part two 212 does not contact the wire, does not rub against the wire, does not abrade the wire, extends the service life of the wire, extends the service life of the connecting terminal, reduces the failure rate of the collection device, and ensures the change of the voltage signal collected by the collection device.

[0067] In some embodiments, in order to realize the conduction between the first connecting terminal and the metal strip, a conduction part is arranged on the first anti-falling part 12 and / or the second anti-falling part 13 and / or the first connecting part 11, which is electrically conductive with the metal strip 20 after the first connecting terminal 1 is connected to the metal strip 20. The conduction part can be a certain structure separately installed on the first anti-falling part 12 and / or the second anti-falling part 13 and / or the first connecting part 11, can be a part structure integrally formed with the first anti-falling part 12 and / or the second anti-falling part 13 and / or the first connecting part 11, or can be a certain part on the first anti-falling part 12 and / or the second anti-falling part 13 and / or the first connecting part 11.

[0068] In order to simplify the structure of the conducting part, and further simplify the structure of the first anti-disengagement part 12 and / or the second anti-disengagement part 13 and / or the first connecting part 11, in some embodiments, the first connecting terminal is made of a wire material. After the first connecting terminal is assembled with the metal strip, the first connecting terminal itself is electrically connected with the metal strip, that is, the conducting part at this time is a partial structure on the structure of the first connecting terminal itself. That is, the second anti-disengagement part 13 and / or the first connecting part 11 and / or the first anti-disengagement part is made of a conductive material. After the first connecting terminal 1 is connected with the metal strip 20, the part of the second anti-disengagement part 13 and / or the first connecting part 11 and / or the first anti-disengagement part that contacts the metal strip 20 forms the conducting part.

[0069] Generally, the conductive material is a metal material such as copper, aluminum, silver, etc. In some embodiments, the first connecting terminal is connected with the metal strip, so the conductive material for making the first connecting terminal is the same metal material as the metal strip.

[0070] In some embodiments, the metal strip is generally made of a conductive metal with good conductivity, such as silver, copper, aluminum, tungsten, etc. Considering the manufacturing cost and use cost, the metal strip is preferably made of copper material, and correspondingly, the first connecting terminal is also made of copper material.

[0071] In some embodiments, in order to simplify the production process of the connecting terminal, the connecting terminal is entirely made of copper material. After the connecting terminal is assembled with the metal strip, the first connecting part and the second anti-disengagement part have a large contact area with the metal strip. The connecting terminal is mainly connected with the metal strip through the first connecting part and the second anti-disengagement part made of copper material. The first connecting terminal and the second connecting terminal are integrally formed by copper material. The wire is installed and connected with the second connecting terminal, that is, the wire is connected with the metal strip.

[0072] In some embodiments, in order to facilitate the quick assembly of the connecting terminal 10 and the metal strip, as shown in FIG. 5, the metal strip 20 is provided with a connecting column hole 201 and an anti-rotation hole 202, which are respectively adapted to the first connecting part 11 and the anti-rotation part 3. The first connecting part 11 and the anti-rotation part 3 are respectively inserted into the connecting column hole 201 and the anti-rotation hole 202.

[0073] In some embodiments, when the connecting terminal and the metal strip are assembled, the first connecting part 11 and the anti-rotation part 3 are inserted into the connecting column hole 201 and the anti-rotation hole 202, respectively, at the same time, the assembly operation is simple, and no other tools or fasteners are needed during the entire assembly process. When the connecting terminal and the metal strip are assembled, the connecting terminal 10 is directly connected with the metal strip, and no connecting bolt and connecting nut are needed to assist in connection and fixation. On the one hand, this makes the connection operation simple and fast, and on the other hand, it avoids the torque back-off of the connecting bolt and the nut, and reduces the risk of loosening or connection failure of the connecting terminal and the metal strip after connection. In addition, the connecting terminal 10 and the metal strip are connected without the assistance of connecting bolts and connecting nuts for connection and fixation, which reduces the number of bolts and nuts used during assembly, reduces the assembly difficulty, and reduces the risk of assembly errors.

Claims

1. A connecting terminal, comprising a first connecting terminal connected with a metal bar in use, a conducting portion provided on the first connecting terminal, the conducting portion electrically connected with the metal bar after the first connecting terminal is connected with the metal bar; The first connecting terminal comprises a first anti-extraction portion, a second anti-extraction portion and a first connecting portion; The first connecting portion has a first end and a second end, and the first anti-extraction portion and the second anti-extraction portion are connected with the first end and the second end respectively; When the first connecting terminal is connected with the metal bar, the first end or the second end is inserted into and passes through a connecting post hole on the metal bar, and the second end or the first end remains outside the metal bar; After the first connecting terminal is connected with the metal bar, the first anti-extraction portion and the second anti-extraction portion limit the first connecting portion from being separated from the metal bar by the first end or the second end respectively.

2. The connection terminal according to claim 1, wherein: The first connecting portion is in a columnar shape, and an outer diameter of the first connecting portion is adapted to an inner diameter of the connecting post hole on the metal bar. 3.The connecting terminal according to claim 2, wherein: The first anti-extraction portion and the second anti-extraction portion are integrally connected with the first end and the second end respectively, an outer diameter of the first anti-extraction portion is slightly larger than the inner diameter of the connecting post hole on the metal bar, and the first anti-extraction portion and the first end pass through the connecting post hole on the metal bar in sequence when the first connecting terminal is connected with the metal bar; An outer diameter of the second anti-extraction portion is larger than the inner diameter of the connecting post hole on the metal bar.

4. The connection terminal according to claim 2 or 3, wherein: The first connecting portion is in a cylindrical shape, the first anti-extraction portion is in a spherical shape, an outer diameter of the first connecting portion in the cylindrical shape is adapted to the inner diameter of the connecting post hole on the metal bar, and an outer diameter of the first anti-extraction portion in the spherical shape is slightly larger than the outer diameter of the first connecting portion in the cylindrical shape.

5. The connection terminal according to claim 4, wherein: The first connecting portion or the first connecting portion and the first anti-extraction portion are provided with a deformation portion; When the first connecting portion or the first connecting portion and the first anti-extraction portion pass through the connecting post hole on the metal bar, the deformation portion absorbs deformation of the first connecting portion or the first connecting portion and the first anti-extraction portion caused by being pressed by the connecting post hole on the metal bar.

6. The connection terminal according to claim 5, wherein: The deformation portion comprises a deformation groove, the deformation groove is provided on an outer circumferential surface of the first connecting portion and penetrates the first connecting portion in a radial direction of the first connecting portion, and two ends of the deformation groove extend to the first anti-extraction portion and the second anti-extraction portion respectively, and the deformation groove absorbs deformation of the first connecting portion and the first anti-extraction portion in the radial direction when passing through the connecting post hole on the metal bar.

7. The connection terminal according to claim 1 or 2 or 3, wherein: A height of the first connecting portion is adapted to a length of the connecting post hole on the metal bar; The second anti-extraction portion is in a disc shape, and a surface of the second anti-extraction portion in the disc shape facing the first connecting portion is in contact with the metal bar after the first connecting terminal is connected with the metal bar. 8.The connecting terminal according to claim 1, further comprising an anti-rotation portion connected with the first connecting terminal, the anti-rotation portion limiting rotation of the first connecting terminal in a circumferential direction after the first connecting terminal is connected with the metal bar.

9. The connection terminal according to claim 8, wherein: The anti-rotation portion comprises a plug rod, one end of the plug rod is fixedly connected with the second anti-extraction portion and / or the first connecting portion, and the other end of the plug rod extends in the same direction as the first connecting portion. When the first connecting terminal is connected with the metal strip, the insertion rod is synchronously inserted into the anti-rotation hole on the metal strip.

10. The connecting terminal according to claim 1, further comprising a second connecting terminal for fixing and connecting the wire and electrically connecting with the conducting part, wherein the second connecting terminal is fixedly connected with the first connecting terminal.

11. The connection terminal according to claim 10, wherein: The second connecting terminal comprises a wire supporting groove with an arc-shaped cross section, and the wire supporting groove comprises an end part one and an end part two, wherein the end part one is fixedly connected with the first connecting terminal. The wire supporting groove is further provided with a plurality of wire pressing pieces, and when the second connecting terminal is connected with the wire, the wire pressing pieces are bent inward and press the wire in the wire supporting groove.

12. The connection terminal according to claim 11, wherein: The end part one is smoothly fixed with the second anti-falling part, and the end part two is expanded in the radial direction.

13. The connection terminal according to claim 1 or 10, wherein: The conducting part is arranged on the first anti-falling part and / or the second anti-falling part and / or the first connecting part, and after the first connecting terminal is connected with the metal strip, the conducting part is electrically connected with the metal strip.

14. The connection terminal according to claim 13, wherein: The second anti-falling part and / or the first connecting part and / or the first anti-falling part are made of conductive material, and after the first connecting terminal is connected with the metal strip, the conducting part is formed on the contact part of the second anti-falling part and / or the first connecting part and / or the first anti-falling part with the metal strip.

15. A collecting device comprising the connecting terminal according to any one of claims 1 to 14, a wire and / or a metal strip, wherein the connecting terminal is connected with the wire and / or the metal strip and electrically connected therewith. The first connecting terminal is connected with the metal strip and electrically connected therewith, and / or the second connecting terminal is connected with the wire and electrically connected therewith.

16. The collection device of claim 15, wherein, The metal strip is provided with a connecting column hole and an anti-rotation hole, and the connecting column hole and the anti-rotation hole are respectively matched with the first connecting part and the anti-rotation part, and the first connecting part and the anti-rotation part are respectively inserted into the connecting column hole and the anti-rotation hole.

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