A bus

Abstract

The utility model relates to a busbar, including a substrate, wherein a sinking mechanism is arranged inside the substrate, and a mounting plate is connected to one side of the substrate, wherein a mounting hole is opened inside the mounting plate. The busbar increases the overall flow area by arranging a plurality of channel pieces, which not only makes the busbar simple in structure and highly versatile, but also satisfies the requirement of large current passing through the circuit while having a short-circuit protection function. The channel piece is a weak area formed by a local cutout hollowing-out of the substrate, and the area is used as a fuse area when a short circuit occurs in the circuit. When a short circuit occurs in the circuit, when the current exceeds the overcurrent limit of a single channel piece, the channel piece fuses, and after the channel piece fuses, the number of the overall channel pieces that are over-currented is reduced, and a chain reaction occurs, so that all the channel pieces fuse to achieve the purpose of protecting the circuit, and solve the problem of being difficult to be compatible with the overcurrent requirements in different circuits.

Description

Technical Field

[0001] The utility model relates to the technical field of bus bars, in particular to a bus bar. Background Art

[0002] The battery cell bus is a high-efficiency automated production line for battery component assembly. With the advancement of technology, the battery cell bus has gradually become an important part of the battery production line. It can efficiently assemble battery cells, shorten the assembly time of battery components, and improve production efficiency.

[0003] The existing cylindrical battery cell busbar has a short-circuit protection form for the battery pack by designing a single fuse or elastic fuse piece at the welding position between the busbar and the battery cell output stage. When a short circuit occurs, the excessive current melts the thinned portion to disconnect the circuit. However, the overcurrent area of ​​a single fuse is small, and it is difficult to be compatible with the overcurrent requirements in different circuits. Therefore, a busbar is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a busbar having the advantages of a large overcurrent area and a short-circuit protection function, and solves the problem of being difficult to be compatible with overcurrent requirements in different circuits.

[0005] In order to achieve the above-mentioned purpose of large flow area, the utility model provides the following technical solutions: a busbar, comprising a base plate, a sinking mechanism is arranged inside the base plate, a mounting plate is connected to one side of the base plate, and a mounting hole is opened inside the mounting plate;

[0006] The sinking platform mechanism comprises a sinking opening, a channel piece is connected to the interior of the base plate, one end of the channel piece is connected to a mounting piece, and a hollow opening is opened in the interior of the base plate.

[0007] Furthermore, the sinking platform mechanisms are distributed in two rows, the base plate is rectangular, and the four corners of the base plate are rounded.

[0008] Furthermore, the mounting plate is in a Z-shape, the mounting plate is located on one side of the long side of the substrate, and the corners of the mounting plate are all chamfered at 45 degrees.

[0009] Furthermore, the number of the mounting holes is two, and the mounting holes are located at an end of the mounting plate away from the base plate.

[0010] Furthermore, the countersunk mouth is opened inside the base plate, one end of the channel piece is connected to the inner side of the countersunk mouth, and the channel piece is S-shaped.

[0011] Furthermore, the diameter of the mounting plate is smaller than the diameter of the countersunk mouth, the lower surface of the mounting plate is flush with the lower surface of the mounting plate, the hollow opening and the channel plate are spaced apart, and the hollow opening and the channel plate are both located between the base plate and the mounting plate.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The busbar increases the overall current flow area by providing multiple channel plates. Compared with the existing solution in which the battery cell pole and the busbar are connected by only one current channel, this solution disperses the current between the battery cell pole and the busbar to multiple channel plates by cutting the busbar. This not only makes the busbar simple in structure and highly versatile, but also satisfies the requirement of larger circuit current while having short-circuit protection function.

[0014] The busbar is provided with a channel piece, which is a weak area formed by a local cutout hollowing out of the substrate. This area serves as a fuse area when a short circuit occurs in the circuit. During normal operation, multiple channel pieces meet conventional overcurrent requirements. When a short circuit occurs in the circuit, when the current exceeds the overcurrent limit of a single channel piece, the channel piece fuses. After the channel piece fuses, the number of overall channel pieces that are over-currented is reduced, resulting in a chain reaction, so that all the channel pieces fuse to achieve the purpose of protecting the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the local structure of the substrate of the utility model.

[0018] In the figure: 1, base plate; 2, sinking platform mechanism; 201, countersunk mouth; 202, channel plate; 203, mounting plate; 204, hollow mouth; 3, mounting plate; 4, mounting hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3A busbar in this embodiment includes a substrate 1, a sinking platform mechanism 2 is arranged inside the substrate 1, the sinking platform mechanism 2 includes a sinking mouth 201, a channel piece 202 is connected to the inside of the substrate 1, one end of the channel piece 202 is connected to a mounting piece 203, a hollow opening 204 is opened inside the substrate 1, a mounting plate 3 is connected to one side of the substrate 1, and a mounting hole 4 is opened inside the mounting plate 3.

[0021] In the case implementation, the substrate 1 is rectangular, and the four corners of the substrate 1 are rounded. The mounting plate 3 is Z-shaped, and the mounting plate 3 is located on one side of the long side of the substrate 1. The corners of the mounting plate 3 are all chamfered at 45 degrees. The substrate 1 can be made of stainless steel nickel-plated sheet, so as to save module space and meet the overcurrent requirements. There are two mounting holes 4, and the mounting holes 4 are located at the end of the mounting plate 3 away from the substrate 1. The mounting holes 4 are penetrated by screws to facilitate the connection of the bus to the installation position.

[0022] In the case implementation, the sinking platform mechanism 2 is a circular stamped concave structure made at the welding position between the bus and the end face of the cylindrical battery cell. The height of the circular stamped concave is determined by the distance between the battery cell fixing bracket and the end face of the battery cell pole, and the sinking platform mechanism 2 is distributed in two rows.

[0023] In the case implementation, the countersunk 201 is opened inside the substrate 1, and one end of the channel piece 202 is connected to the inner side of the countersunk 201. The channel piece 202 is S-shaped. The channel piece 202 is a weak area formed by the substrate 1 through a local cutout hollowing-out 204. This area serves as a fuse area when a short circuit occurs in the circuit. During normal operation, multiple channel pieces 202 meet the conventional overcurrent requirements. When a short circuit occurs in the circuit, when the current exceeds the overcurrent limit of a single channel piece 202, the channel piece 202 is blown. After the channel piece 202 is blown, the number of the overall channel pieces 202 that are over-charged is reduced, and a chain reaction occurs. As a result, all the channel pieces 202 are blown to achieve the purpose of protecting the circuit. The more the number of channel pieces 202, the better the overall overcurrent capability, and each channel piece 202 The smaller the size, the faster it can be melted when a short circuit occurs. The diameter of the mounting piece 203 is smaller than the diameter of the countersunk mouth 201. The lower surface of the mounting piece 203 is flush with the lower surface of the mounting plate 3. The hollow opening 204 and the channel piece 202 are spaced apart. The hollow opening 204 and the channel piece 202 are both located between the substrate 1 and the mounting piece 203. By dispersing the current between the battery cell pole and the busbar to multiple channel pieces 202, the overall flow area is increased. Compared with the existing solution in which the battery cell pole and the busbar are connected by only one current channel, the present solution disperses the current between the battery cell pole and the busbar to multiple channel pieces 202 by cutting the busbar. This not only makes the busbar simple in structure and highly versatile, but also satisfies the requirement of a large current in the circuit while having a short-circuit protection function.

[0024] When implementing, follow these steps:

[0025] 1) First, a circular stamped concave structure is made at the welding position between the substrate 1 and the end face of the cylindrical battery cell to form a sinking mechanism 2, and a screw is passed through the mounting hole 4 to connect the busbar to the mounting position;

[0026] 2) Then the battery core is welded to the sinking mechanism 2;

[0027] 3) multiple channel sheets 202 are used to meet the conventional flow requirements;

[0028] 4) When a short circuit occurs in the loop, a single channel piece 202 may fuse, causing all the channel pieces 202 to fuse.

[0029] In summary, the busbar, the substrate 1 is rectangular, the four corners of the substrate 1 are rounded, the mounting plate 3 is Z-shaped, the mounting plate 3 is located on one side of the long side of the substrate 1, and the corners of the mounting plate 3 are all chamfered at 45 degrees. The substrate 1 can be made of a stainless steel nickel-plated sheet, so as to save module space and meet the overcurrent requirements. The number of mounting holes 4 is two, and the mounting hole 4 is located at the end of the mounting plate 3 away from the substrate 1. The screw penetrates the mounting hole 4 to facilitate the connection of the busbar to the installation position. The sinking mechanism 2 is a circular hole made at the welding position between the busbar and the end face of the cylindrical battery cell. The height of the circular stamped concave structure is determined by the distance between the battery cell fixing bracket and the end face of the battery cell pole. The sinking platform mechanism 2 is distributed in two rows. The sinking mouth 201 is opened inside the substrate 1. One end of the channel piece 202 is connected to the inner side of the sinking mouth 201. The channel piece 202 is S-shaped. The channel piece 202 is a weak area formed by the local cutout hollowing mouth 204 of the substrate 1. This area serves as a fuse area when a short circuit occurs in the circuit. During normal operation, multiple channel pieces 202 meet the conventional overcurrent requirements. When a short circuit occurs in the circuit, the current exceeds a single channel. When the overcurrent limit of the plate 202 is reached, the channel plate 202 is fused. After the channel plate 202 is fused, the number of the overall channel plates 202 that are over-currented is reduced, and a chain reaction occurs, so all the channel plates 202 are fused to achieve the purpose of protecting the circuit. The more the number of channel plates 202 is, the better the overall overcurrent capacity is. The smaller the size of each channel plate 202 is, the faster it can be fused when a short circuit occurs. The diameter of the mounting plate 203 is smaller than the diameter of the countersunk mouth 201. The lower surface of the mounting plate 203 is flush with the lower surface of the mounting plate 3. The hollow mouth 204 is flush with the channel plate 2 02 are distributed at intervals, the hollow opening 204 and the channel piece 202 are both located between the substrate 1 and the mounting piece 203, and the current between the battery cell pole and the bus is dispersed to multiple channel pieces 202, thereby increasing the overall current flow area. Compared with the existing solution in which the battery cell pole and the bus are connected by only one current channel, this solution disperses the current between the battery cell pole and the bus to multiple channel pieces 202 by cutting the bus, which not only makes the bus structure simple and versatile, but also satisfies the requirement of a larger current in the circuit while having a short-circuit protection function.

[0030] In addition, a circular stamped concave structure is first made at the welding position between the substrate 1 and the end face of the cylindrical battery cell to form a sinking platform mechanism 2, and the busbar is connected to the installation position by a screw passing through the mounting hole 4. Specifically, the sinking platform mechanism 2 is a circular stamped concave structure made at the welding position between the busbar and the end face of the cylindrical battery cell. The height of the circular stamped concave is determined by the distance between the battery cell fixing bracket and the end face of the battery cell pole. Then, the battery cell is welded to the sinking platform mechanism 2, and then a plurality of channel sheets 202 are used to meet the conventional overcurrent requirements. By making the current distribution between the battery cell pole and the busbar The current is dispersed to multiple channel pieces 202, thereby increasing the overall flow area. When a short circuit occurs in the loop, a single channel piece 202 is melted and all the channel pieces 202 are melted. Specifically, when the current exceeds the overcurrent limit of a single channel piece 202, the channel piece 202 is melted. After the channel piece 202 is melted, the number of the overall channel pieces 202 that are over-current is reduced, and a chain reaction occurs. As a result, all the channel pieces 202 are melted, so as to achieve the purpose of protecting the loop, thereby solving the problem of being difficult to match the overcurrent requirements of different loops.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A busbar, comprising a substrate (1), characterized in that: A sinking mechanism (2) is arranged inside the base plate (1); a mounting plate (3) is connected to one side of the base plate (1); and a mounting hole (4) is provided inside the mounting plate (3); The sinking platform mechanism (2) comprises a sinking opening (201), the interior of the base plate (1) is connected to a channel plate (202), one end of the channel plate (202) is connected to a mounting plate (203), and the interior of the base plate (1) is provided with a hollow opening (204).

2. A busbar according to claim 1, characterized in that: The sinking platform mechanisms (2) are distributed in two rows, the base plate (1) is rectangular, and the four corners of the base plate (1) are all rounded.

3. A busbar according to claim 1, characterized in that: The mounting plate (3) is in a Z shape, and is located on one side of the long side of the base plate (1). The corners of the mounting plate (3) are all chamfered at 45 degrees.

4. A busbar according to claim 1, characterized in that: The number of the mounting holes (4) is two, and the mounting holes (4) are located at one end of the mounting plate (3) away from the base plate (1).

5. A busbar according to claim 1, characterized in that: The countersunk mouth (201) is opened inside the base plate (1), one end of the channel piece (202) is connected to the inner side of the countersunk mouth (201), and the channel piece (202) is S-shaped.

6. A busbar according to claim 1, characterized in that: The diameter of the mounting plate (203) is smaller than the diameter of the countersunk mouth (201); the lower surface of the mounting plate (203) is flush with the lower surface of the mounting plate (3); the hollow opening (204) and the channel plate (202) are spaced apart; and the hollow opening (204) and the channel plate (202) are both located between the base plate (1) and the mounting plate (203).

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