Copper busbar positioning component

Abstract

The present invention relates to the technical field of copper bars, and in particular to a copper bar positioning assembly, comprising a positioning sleeve, a screw sleeve and a nut; the screw sleeve is inserted into the positioning sleeve and has an interference fit with the positioning sleeve, the screw sleeve is provided with an internal thread on the inner wall, the bolt is inserted into the screw sleeve and engages with the internal thread; one end of the screw sleeve extends out of the outer side of the positioning sleeve and is provided with an external thread, the nut is sleeved on the outer side of the screw sleeve and engages with the external thread, and the copper bar is clamped between the positioning sleeve and the nut. The copper bar positioning assembly of the present application can form a buffer between the bolt and the copper bar to prevent the bolt from being directly pressed on the copper bar, thereby reducing the possibility of bending or breaking of the copper bar, so that the current between the copper bar and the positive or negative electrode of the battery module can be stably guided and transported. In addition, the copper bar positioning assembly can be detachably installed on the copper bar, and a copper bar of a suitable model and size can be selected according to the characteristics of the battery module, which has good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of copper busbars, and in particular to a copper busbar positioning component. Background Art

[0002] Copper busbar, also known as copper busbar or copper busbar, is made of copper and is a long conductor with a rectangular or chamfered (rounded) rectangular cross-section. It plays the role of transmitting current and connecting electrical equipment in the circuit. It has been widely used in complete sets of power distribution devices, especially in the connection of battery modules of new energy vehicle batteries.

[0003] At present, due to the different installation positions and installation methods of battery modules in new energy vehicle batteries, most copper bars have a flat or angled appearance, with at least one installation hole spaced apart on the surface. During actual installation, bolts are directly fixed through the installation holes of the copper bar and the electrode ports of the battery module, so that the copper bar is connected to the positive or negative electrode of the battery module, thereby achieving current conduction.

[0004] However, the flat or angled copper busbar configuration makes it thinner and the material itself is relatively soft. When the copper busbar is pressed against the electrode port with bolts, the copper busbar is prone to bending or even breaking if the bolts are over-tightened, affecting its normal use. Summary of the invention

[0005] The purpose of the present invention is to provide a copper busbar positioning assembly, which can form a buffer between the bolt and the copper busbar to prevent the bolt from being directly pressed on the copper busbar, thereby reducing the possibility of bending or breaking of the copper busbar, so that the current between the copper busbar and the positive or negative electrode of the battery module can be stably guided and transmitted.

[0006] The purpose of the above invention is achieved through the following technical solutions:

[0007] A copper busbar positioning assembly comprises a positioning sleeve, a screw sleeve and a nut; the screw sleeve is inserted into the positioning sleeve and has an interference fit with the positioning sleeve, the screw sleeve is provided with an internal thread on the inner wall, the bolt is inserted into the screw sleeve and engages with the internal thread; one end of the screw sleeve extends out of the outer side of the positioning sleeve and is provided with an external thread, the nut is sleeved on the outer side of the screw sleeve and engages with the external thread, and the copper busbar is clamped between the positioning sleeve and the nut.

[0008] By adopting the above technical scheme, when the copper bar positioning assembly of the present application is installed, the bolt is inserted into the screw sleeve and engages with the internal thread, and the screw sleeve is inserted into the positioning sleeve. At the same time, the nut is threadedly connected to the outside of the screw sleeve, and one end of the screw sleeve is axially limited. The other end needs to be connected to the electrode port of the battery module because the bolt passes through the screw sleeve, so that the bolt realizes the axial limitation of the other end of the screw sleeve while pressing the screw sleeve. On the other hand, the copper bar is clamped between the positioning sleeve and the nut, and the screw sleeve can be circumferentially limited. As a result, the copper bar positioning assembly of the present application can form a buffer between the bolt and the copper bar to prevent the bolt from being directly pressed on the copper bar, thereby reducing the possibility of bending or breaking of the copper bar, so that the current between the copper bar and the positive or negative electrode of the battery module can be stably guided and transported.

[0009] The present invention is further configured as follows: the screw sleeve includes a threaded section, a first limit section, a second limit section and an abutment section connected in sequence; the first limit section and the second limit section are interference fit with the positioning sleeve, and the outer diameter of the first limit section is smaller than the outer diameter of the second limit section, and the positioning sleeve forms a stepped groove in the inner wall accordingly; the threaded section and the abutment section extend out from both ends of the positioning sleeve respectively, and the external thread is arranged on the outer side of the threaded section.

[0010] By adopting the above technical solution, the different outer diameters of the first limiting section and the second limiting section in the present application make the screw sleeve have two abutment surfaces when it is inserted into the positioning sleeve, and the stepped groove on the inner wall of the positioning sleeve is the dividing line, so that the screw sleeve can only be inserted from one side of the positioning sleeve, which plays a guiding and limiting role for the screw sleeve, and at the same time increases the installation stability between the screw sleeve and the positioning sleeve to a certain extent. The threaded section and the abutment section extend out from both ends of the positioning sleeve respectively, the former facilitates the threaded connection of the screw sleeve, and the latter avoids direct abutment between the bolt and the positioning sleeve, which facilitates the rapid loading and unloading of the bolt on the one hand, and on the other hand, the clamping force of the bolt is transmitted to the copper bar after the screw sleeve and the positioning sleeve in turn, and the clamping force can be effectively buffered in this process, thereby better ensuring the structural stability of the copper bar, and has the characteristics of simple structure and excellent effect.

[0011] The present invention is further configured as follows: a plurality of avoidance grooves are provided at intervals along the circumferential surface of the first limiting section, and a convex ridge is formed between every two avoidance grooves.

[0012] By adopting the above technical solution, the convex ridges formed on the circumference of the first limiting section increase the roughness of the circumference, reducing the possibility of relative axial rotation between the screw sleeve and the positioning sleeve. In addition, when the screw sleeve is installed, the avoidance groove can provide deformation space for the first limiting section, which cooperates with the second limiting section to effectively improve the installation efficiency of the screw sleeve while ensuring excellent structural stability.

[0013] The present invention is further configured such that the length direction of the convex ridge is the axial direction of the first limiting section.

[0014] By adopting the above technical solution, when the length direction of the ridge is the axial direction, if the screw sleeve rotates axially, its rotation tangent direction is perpendicular to the length direction of the ridge, so that the limiting effect obtained is increased, thereby further increasing the structural stability between the screw sleeve and the positioning sleeve.

[0015] The present invention is further configured such that a first annular groove is formed at a connection between the outer wall of the second limiting section and the first limiting section.

[0016] By adopting the above technical solution, the opening of the first annular groove allows a gap to exist between the first limiting section and the second limiting section. During the disassembly and assembly of the screw sleeve, the air in the first annular groove can be replenished into the gap between the screw sleeve and the positioning sleeve, which helps to improve the disassembly and assembly efficiency of the screw sleeve.

[0017] The present invention is further configured as follows: a second annular groove is circumferentially provided on the outer wall of the abutting section.

[0018] By adopting the above technical solution, the wall thickness of the abutment section at the second annular groove is smaller than that of other parts. If the bolt is over-tightened during the tightening process, the abutment section will undergo a certain elastic deformation at the second groove, which can provide a certain buffer for the tightening of the bolt, so that the copper busbar can be properly installed at the electrode port.

[0019] The present invention is further configured as follows: the positioning sleeve includes a first positioning section and a second positioning section connected in sequence, and the first positioning section is clamped in the mounting hole of the copper busbar, the nut is sleeved on the nut sleeve and abuts against the first positioning section, and the copper busbar is clamped between the second positioning section and the nut.

[0020] By adopting the above technical solution, the first positioning section is fixedly inserted into the installation hole of the copper bar, and the copper bar is clamped between the second positioning section and the nut. On the one hand, the structural stability between the positioning sleeve and the copper bar can be increased, and on the other hand, more circumferential limits can be provided for the screw sleeve, so that the copper bar positioning assembly can be stably installed on the copper bar, and at the same time, the extrusion effect of the copper bar positioning assembly on the copper bar during the screwing process of the bolt is effectively reduced. In addition, the setting of the positioning sleeve allows the copper bar positioning assembly to be detachably installed on the copper bar, which is not limited by the copper bar, and the copper bar of suitable model and size can be selected according to the characteristics of the battery module, which has good application prospects.

[0021] The present invention is further configured as follows: the first positioning section is in the shape of a prism that is hollow in the axial direction, and the installation hole of the copper busbar is a corresponding prism-shaped hole.

[0022] By adopting the above technical solution, the prismatic first positioning section has multiple edges. When it is clamped in the mounting hole of the copper busbar, it can play a good circumferential limiting role for the first positioning section, thereby increasing the structural stability of the positioning sleeve when it is installed on the copper busbar.

[0023] The present invention is further configured as follows: the positioning sleeve is a copper sleeve, and the surface of the copper sleeve is electroplated with a silver layer; the surface of the screw sleeve is electroplated with a zinc-nickel layer.

[0024] By adopting the above technical solution, the copper sleeve, silver layer and zinc-nickel layer all have good conductivity, and the conductivity of the three is silver layer>zinc-nickel layer>copper sleeve. Therefore, when transmitting current, the current on the copper busbar will be guided to flow to the positioning sleeve, and then guided by the positioning sleeve to the required equipment. If it is reverse transmission, the current on the positioning sleeve will be guided to flow to the copper busbar, and then the copper busbar will be transported to the required equipment. Among them, electroplating the zinc-nickel layer on the screw sleeve can reduce the loss of current during the transmission process and improve the transmission efficiency of current.

[0025] In summary, the beneficial technical effects of the present invention are:

[0026] 1. The copper bar positioning assembly of the present application can form a buffer between the bolt and the copper bar to prevent the bolt from directly pressing on the copper bar, thereby reducing the possibility of bending or breaking of the copper bar, so that the current between the copper bar and the positive or negative electrode of the battery module can be stably guided and transmitted;

[0027] 2. The threaded sleeve in the present application includes a threaded section, a first limiting section, a second limiting section and an abutting section connected in sequence, which can buffer the pressing force of the bolt during the tightening process of the bolt, thereby better ensuring the structural stability of the copper busbar, and has the characteristics of simple structure and excellent effect;

[0028] 3. The positioning sleeve in the present application includes a first positioning section and a second positioning section connected in sequence, which effectively reduces the squeezing effect of the copper busbar positioning assembly on the copper busbar during the tightening process of the bolt, so that the copper busbar positioning assembly can be detachably installed on the copper busbar. The operator can select the copper busbar of appropriate model and size according to the characteristics of the battery module, which has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the copper busbar positioning assembly;

[0030] Figure 2 This is a structural diagram of the copper busbar positioning assembly being installed on the copper busbar and cooperating with the bolts;

[0031] Figure 3 It is a schematic diagram of the exploded structure in which the copper busbar positioning assembly is installed on the copper busbar and cooperates with the bolts;

[0032] Figure 4It is a structural schematic diagram of the screw sleeve;

[0033] Figure 5 It is an axial cross-sectional view of the positioning sleeve.

[0034] In the figure, 1, positioning sleeve; 11, first positioning section; 12, second positioning section; 2, screw sleeve; 21, threaded section; 22, first limiting section; 221, avoidance groove; 222, convex ridge; 23, second limiting section; 231, first annular groove; 24, abutment section; 241, second annular groove; 3, nut; 4, internal thread; 5, bolt; 6, external thread; 7, copper busbar; 71, mounting hole; 8, stepped groove. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] See also Figure 1 , is a copper busbar positioning assembly disclosed in the present invention, comprising a positioning sleeve 1, a screw sleeve 2 and a nut 3. The positioning sleeve 1 is a copper sleeve, and the surface of the copper sleeve is electroplated with a silver layer; the screw sleeve 2 and the nut 3 are both made of stainless steel, and the surface of the screw sleeve 2 is electroplated with a zinc-nickel layer.

[0037] See also Figure 2 and Figure 3 , the screw sleeve 2 is inserted into the positioning sleeve 1 and is interference fit with the positioning sleeve 1, the screw sleeve 2 is provided with an internal thread 4 on the inner wall, the bolt 5 is inserted into the screw sleeve 2 and engages with the internal thread 4; one end of the screw sleeve 2 extends out of the outer side of the positioning sleeve 1 and is provided with an external thread 6, the nut 3 is sleeved on the outer side of the screw sleeve 2 and engages with the external thread 6, and the copper bar 7 is clamped between the positioning sleeve 1 and the nut 3, so as to form a buffer between the bolt 5 and the copper bar 7, reducing the possibility of bending or breaking of the copper bar 7. Among them, the copper bar 7 in the figure of this embodiment is only a schematic diagram, and its specific structure can select a suitable model size according to the actual situation of the battery module.

[0038] See also Figure 4 The screw sleeve 2 is cylindrical and includes a threaded section 21, a first limiting section 22, a second limiting section 23 and abutting section 24 connected in sequence. The first limiting section 22 and the second limiting section are interference-fitted with the positioning sleeve 1, and the outer diameter of the first limiting section 22 is smaller than the outer diameter of the second limiting section 23, so that there is a step surface at the connection between the first limiting section 22 and the second limiting section 23, and the positioning sleeve 1 forms a stepped groove 8 in the inner wall (see Figure 5 When the screw sleeve 2 is inserted into the positioning sleeve 1, there are two abutment surfaces between the two, and the stepped groove 8 on the inner wall of the positioning sleeve 1 serves as a dividing line, so that the screw sleeve 2 can only be installed from one side of the positioning sleeve 1, which plays a guiding and limiting role for the screw sleeve 2, and at the same time increases the installation stability between the screw sleeve 2 and the positioning sleeve 1 to a certain extent.

[0039] The first limiting section 22 is provided with a plurality of avoidance grooves 221 spaced apart along the circumference, the cross section of the avoidance grooves 221 is triangular, and a ridge 222 is formed between every two avoidance grooves 221, and the length direction of the ridge 222 is the axial direction of the first limiting section 22. Thus, the circumferential surface roughness of the first limiting section 22 increases accordingly.

[0040] Combination Figure 3 When the first limiting section 22 is inserted into the positioning sleeve 1, the side of the convex ridge 222 away from the axis abuts against the inside of the positioning sleeve 1, which can effectively reduce the possibility of relative axial rotation between the screw sleeve 2 and the positioning sleeve 1. On the other hand, the opening of the avoidance groove 221 provides a certain deformation space for the first limiting section 22, and the interference fit between the second limiting section 23 and the positioning sleeve 1 is used to not only ensure the structural stability between the screw sleeve 2 and the positioning sleeve 1, but also effectively improve the installation efficiency of the screw sleeve 2.

[0041] The outer wall of the second limiting section 23 is further provided with a first annular groove 231 at the connection between the second limiting section 22, thereby, a gap is formed between the first limiting section 22 and the second limiting section 23. During the disassembly and assembly of the screw sleeve 2, the air in the first annular groove 231 can be replenished into the gap between the screw sleeve 2 and the positioning sleeve 1, which helps to further improve the disassembly and assembly efficiency of the screw sleeve 2.

[0042] The threaded section 21 and the abutting section 24 extend out of the two ends of the positioning sleeve 1, respectively, and the external thread 6 is arranged on the outer side of the threaded section 21, so as to facilitate the threaded connection of the nut 3. A second annular groove 241 is circumferentially provided on the outer wall of the abutting section 24, and the edges of the second annular groove 241 are all provided with rounded corners. In this way, the wall thickness of the abutting section 24 at the second annular groove 241 is smaller than that of other parts. If the bolt 5 is over-tightened during the tightening process, the abutting section 24 will undergo a certain elastic deformation at the second groove, thereby providing a certain buffer for the compression of the bolt 5, so that the copper bar 7 can be installed intact at the electrode port.

[0043] The positioning sleeve 1 includes a first positioning section 11 and a second positioning section 12 connected in sequence, and the first positioning section 11 is clamped in the mounting hole of the copper bar 7. The first positioning section 11 is in the shape of a hollow prism in the axial direction, and is preferably a hexagonal prism in this embodiment; the mounting hole 71 of the copper bar 7 corresponds to a prismatic hole, specifically a hexagonal hole. The nut 3 is sleeved on the nut sleeve 2 and abuts against the first positioning section 11, and the copper bar 7 is clamped between the second positioning section 12 and the nut 3.

[0044] The implementation principle of this embodiment is:

[0045] When transmitting current, the current on the copper bar 7 will be guided to flow to the positioning sleeve 1, and then guided to the required equipment by the positioning sleeve 1. If it is reverse transmission, the current on the positioning sleeve 1 will be guided to flow to the copper bar 7, and then transported to the required equipment by the copper bar 7. Among them, the electroplating of zinc-nickel layer on the screw sleeve 2 can reduce the loss of current during the transmission process and improve the transmission efficiency of current.

[0046] When installing the copper bar 7 positioning assembly, the bolt 5 is inserted into the screw sleeve 2 and engages with the internal thread 4, and the screw sleeve 2 is inserted into the positioning sleeve 1 for circumferential positioning. At the same time, the nut 3 is threadedly connected to the external thread 6 of the threaded section 21. Since the bolt 5 passes through the screw sleeve 2 and needs to be connected to the electrode port of the battery module, the screw sleeve 2 is clamped between the bolt 5 and the nut 3 for axial positioning. On the other hand, the copper bar 7 is clamped between the second positioning section 12 of the positioning sleeve 1 and the nut 3, and the first positioning section 11 of the positioning sleeve 1 is clamped in the mounting hole 71 of the copper bar 7, thereby realizing the fixed installation of the positioning sleeve, so that the copper bar 7 positioning assembly can be stably installed on the copper bar 7, and at the same time, the extrusion effect of the copper bar 7 positioning assembly on the copper bar 7 during the screwing process of the bolt 5 is effectively reduced.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A copper busbar positioning assembly, characterized in that: It comprises a positioning sleeve (1), a screw sleeve (2) and a nut (3); the screw sleeve (2) is inserted into the positioning sleeve (1) and is interference-fitted with the positioning sleeve (1); the screw sleeve (2) is provided with an internal thread (4) on the inner wall; the bolt (5) is inserted into the screw sleeve (2) and is engaged with the internal thread (4); one end of the screw sleeve (2) extends out of the outer side of the positioning sleeve (1) and is provided with an external thread (6); the nut (3) is sleeved on the outer side of the screw sleeve (2) and is engaged with the external thread (6); a copper bar (7) is clamped between the positioning sleeve (1) and the nut (3); The screw sleeve (2) comprises a threaded section (21), a first limiting section (22), a second limiting section (23) and an abutting section (24) which are connected in sequence; the first limiting section (22) and the second limiting section are interference-fitted with the positioning sleeve (1), and the outer diameter of the first limiting section (22) is smaller than the outer diameter of the second limiting section (23); a stepped groove (8) is correspondingly formed in the inner wall of the positioning sleeve (1); the threaded section (21) and the abutting section (24) respectively extend from two ends of the positioning sleeve (1), and the external thread (6) is arranged on the outer side of the threaded section (21); The positioning sleeve (1) comprises a first positioning section (11) and a second positioning section (12) which are connected in sequence, and the first positioning section (11) is clamped in the mounting hole (71) of the copper busbar (7), the nut (3) is sleeved on the nut sleeve (2) and abuts against the first positioning section (11), the copper busbar (7) is clamped between the second positioning section (12) and the nut (3), the first positioning section (11) is in the shape of a prism which is hollow in the axial direction, and the mounting hole (71) of the copper busbar is a corresponding prism-shaped hole.

2. A copper busbar positioning assembly according to claim 1, characterized in that: The first limiting section (22) is provided with a plurality of avoidance grooves (221) spaced apart along the circumference, and a convex ridge (222) is formed between every two avoidance grooves (221).

3. A copper busbar positioning assembly according to claim 2, characterized in that: The length direction of the convex ridge (222) is the axial direction of the first limiting section (22).

4. A copper busbar positioning assembly according to claim 1, characterized in that: A first annular groove (231) is formed on the outer wall of the second limiting section (23) at the connection with the first limiting section (22).

5. The copper busbar positioning assembly according to claim 1, characterized in that: A second annular groove (241) is circumferentially formed on the outer wall of the abutting section (24).

6. A copper busbar positioning assembly according to claim 1, characterized in that: The positioning sleeve (1) is a copper sleeve, and the surface of the copper sleeve is electroplated with a silver layer; the surface of the screw sleeve (2) is electroplated with a zinc-nickel layer.

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