Busbar assembly for battery module

Abstract

The busbar assembly comprises a plate-shaped shell, a plurality of bottom cavities are formed in the bottom face of the plate-shaped shell, side battens are horizontally connected in the bottom cavities in a sliding mode, T-shaped sliding grooves are formed in the side walls of the side battens, T-shaped sliding blocks are horizontally connected in the T-shaped sliding grooves in a sliding mode, carrying blocks are fixedly connected to the side walls of the T-shaped sliding blocks, and the carrying blocks are fixedly connected to the bottom face of the plate-shaped shell. The top end of a connector is fixedly embedded in the bottom face of the carrying block, a transverse rod is horizontally and fixedly connected in the bottom cavity, a through opening is horizontally formed in the carrying block, a conductive copper strip is fixedly connected to the side, close to the side batten, of the transverse rod, a conductive copper sheet is fixedly connected to the side, close to the side batten, of the through opening, and the conductive copper sheet makes contact with and is electrically connected with the conductive copper strip. The carrying block is in a sliding connection mode and can be adjusted to any position, so that the position of the connector at the bottom can be changed along with the carrying block, the connector can be adjusted to the position of a battery cell interface after different types of battery cells are replaced, the battery cells can be matched and connected with one another, a busbar does not need to be replaced, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of busbars, in particular to a busbar assembly for a battery module. Background Art

[0002] At present, the voltage and capacity of a single battery cell are low, and it is difficult to meet the requirements of some high voltage and / or large capacity working conditions during use. Therefore, it is often necessary to use multiple battery cells in series and / or parallel to form a battery module. In view of the above problems, in order to meet the requirements of high voltage and / or large capacity working conditions, a metal busbar is usually used to connect the battery cells. The main function of the busbar is to replace the wire, so that there will be no messy wires in the battery module. For example, the Chinese utility model patent with authorization announcement number CN209487887U discloses a busbar structure for a battery, which includes a plurality of single busbars, and each of the single busbars is connected by a connecting portion; however, the busbar used in the battery module has the following defects:

[0003] The current bus mainly adopts a conductive metal sheet structure, combined with packaging, and uses connectors to connect to the battery to achieve series or parallel connection. However, the position of the connector is fixed. Therefore, if a different number of battery cells are replaced in the battery module, or the battery cells with a changed interface position, the bus cannot be used and can only be replaced together, which is very inconvenient.

[0004] To this end, we propose a busbar assembly for a battery module to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a busbar assembly for a battery module to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a busbar assembly for a battery module, comprising a plate-shaped shell, wherein a plurality of bottom cavities are defined on the bottom surface of the plate-shaped shell, wherein side strips are horizontally slidably connected within the bottom cavities, wherein the side strips have T-shaped slots defined on their side walls, wherein T-shaped sliders are horizontally slidably connected within the T-shaped slots, wherein the side walls of the T-shaped sliders are fixedly connected to mounting blocks, wherein the top end of a connector is fixedly embedded in the bottom surface of the mounting block;

[0007] A horizontal cross bar is fixed in the bottom cavity, a through opening is horizontally opened on the mounting block, a conductive copper bar is fixed to the side of the cross bar close to the side strip plate, a conductive copper sheet is fixed to the side of the through opening close to the side strip plate, the conductive copper sheet contacts and is electrically connected to the conductive copper bar, and the conductive copper sheet is fixed and electrically connected to the top side wall of the connector.

[0008] Preferably, the bottom cavity is fixed to a locking plate on a side away from the side strip, the surface of the locking plate is a rough structure, the carrying block is fixed to a rubber block on a side close to the locking plate, the rubber block contacts the surface of the locking plate, the inner side wall of the T-shaped slide groove is fixed to the rubber plate, and the side wall of the T-shaped slider contacts the surface of the rubber plate.

[0009] Preferably, a plurality of short slide grooves are provided on both sides of the bottom cavity, two power sliders are fixedly connected on both sides of the side strips, and the power sliders are slidably connected in the two short slide grooves.

[0010] Preferably, two transmission rods are rotatably connected inside the two sides of the plate shell, and the two transmission rods pass through multiple short slide grooves. The transmission rods are fixed in the short slide grooves and connected to the screw rods. A threaded sleeve is fixed in the power slider, and the screw rod is threadedly connected to the threaded sleeve.

[0011] Preferably, a transmission cavity is opened on one side of the interior of the plate-shaped shell, and the transmission cavity is parallel to the multiple bottom cavities. The ends of the two transmission rods are both located in the transmission cavity. The center position of the transmission cavity is horizontally rotated to connect the power rod. Two driving pulleys are fixedly sleeved on the power rod, and a dial wheel is also fixedly sleeved on the power rod. The two power rods are located in the transmission cavity and one end is fixedly connected to two driven pulleys, and a synchronous belt is sleeved on the driving pulley and the driven pulley.

[0012] Preferably, the end of the cross bar is vertically fixed to the bottom end of the conductive column near one side of the conductive copper bar, the conductive column is fixed to and electrically connected to the conductive copper bar, the conductive column passes through the plate-shaped shell, the terminal is fixed to one side of the top surface of the plate-shaped shell, the conductive column is fixedly embedded inside the terminal, the conductive column is electrically connected to the terminal, and a bottom opening is provided on the bottom surface of the plate-shaped shell corresponding to the position of the thumbwheel, the bottom of the thumbwheel passes through the bottom opening, two friction blocks are fixed on both sides of the bottom opening, and the friction blocks contact the side walls of the thumbwheel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The mounting block of the utility model is in a sliding connection mode and can be adjusted to any position, so that the connector at the bottom will also change position accordingly. In this way, after replacing different types of battery cells, the connector can be adjusted to the battery cell interface position and connected with each other without replacing the bus bar, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the main structure of the first and second embodiments of the present utility model;

[0016] Figure 2 Schematic diagram of the main body cross-section structure in the first and second embodiments of the present utility model;

[0017] Figure 3Schematic diagram of the cross-sectional structure of the internal structure of the bottom cavity in the first and second embodiments of the present utility model;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0020] Figure 6 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. Plate shell; 2. Bottom cavity; 3. Terminal; 4. Side strip; 5. T-shaped slide; 6. T-shaped slider; 7. Carrying block; 8. Cross bar; 9. Conductive copper sheet; 10. Conductive copper bar; 11. Connector; 12. Through port; 13. Rubber block; 14. Locking plate; 15. Conductive column; 16. Short slide; 17. Power slider; 18. Transmission rod; 19. Screw; 20. Threaded sleeve; 21. Transmission cavity; 22. Power rod; 23. Pulley; 24. Driving pulley; 25. Driven pulley; 26. Synchronous belt; 27. Bottom port; 28. Friction block; 29. ​​Rubber plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1:

[0024] See also Figure 1-3 The utility model provides a technical solution: a busbar assembly for a battery module, comprising a plate-shaped shell 1, wherein a plurality of bottom cavities 2 are defined on the bottom surface of the plate-shaped shell 1, wherein side strips 4 are horizontally slidably connected in the bottom cavities 2, wherein the side strips 4 have T-shaped slots 5 defined on their side walls, wherein T-shaped sliders 6 are horizontally slidably connected in the T-shaped slots 5, wherein the side walls of the T-shaped sliders 6 are fixedly connected to mounting blocks 7, wherein the top end of a connector 11 is fixedly embedded in the bottom surface of the mounting blocks 7;

[0025] A horizontally fixed cross bar 8 is provided in the bottom cavity 2, a through opening 12 is provided horizontally on the mounting block 7, a conductive copper bar 10 is fixed to the side of the cross bar 8 close to the side strip 4, a conductive copper sheet 9 is fixed to the side of the through opening 12 close to the side strip 4, the conductive copper sheet 9 contacts and is electrically connected to the conductive copper bar 10, and the conductive copper sheet 9 is fixed and electrically connected to the top side wall of the connector 11, the mounting block 7 is in a sliding connection mode and can be adjusted to any position, so that the connector 11 at the bottom will also change position accordingly, so that after replacing different types of battery cells, the connector 11 can be adjusted to the battery cell interface position, and they can be connected in coordination with each other without replacing the bus bar, which is convenient to use.

[0026] Example 2:

[0027] See also Figure 1-6 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. The bottom cavity 2 is fixed to the side away from the side strip 4 with a locking plate 14. The surface of the locking plate 14 has a rough structure. The carrying block 7 is fixed to the side close to the locking plate 14 with a rubber block 13. The rubber block 13 contacts the surface of the locking plate 14. The inner wall of the T-shaped slide 5 is fixed to a rubber plate 29. The side wall of the T-shaped slider 6 contacts the surface of the rubber plate 29. After the adjustment is completed, the contact between the rubber block 13 and the locking plate 14 can fix the position of the connector 11. The function of the rubber plate 29 is to prevent it from moving by itself when the position of the carrying block 7 is adjusted, thereby playing a temporary fixing role.

[0028] A plurality of short chutes 16 are provided on both sides of the plurality of bottom cavities 2 , and two power sliders 17 are fixedly connected on both sides of the side strips 4 , and the power sliders 17 are slidably connected in the two short chutes 16 .

[0029] Two transmission rods 18 are rotatably connected inside the plate shell 1 on both sides. The two transmission rods 18 pass through multiple short slide grooves 16. The transmission rods 18 are fixed in the short slide grooves 16 and are connected to the screw rod 19. The threaded sleeve 20 is fixed in the power slider 17, and the screw rod 19 is threadedly connected to the threaded sleeve 20.

[0030] A transmission cavity 21 is opened on one side of the interior of the plate-shaped shell 1. The transmission cavity 21 is parallel to the multiple bottom cavities 2. The ends of the two transmission rods 18 are both located in the transmission cavity 21. The center position of the transmission cavity 21 is horizontally rotated to connect the power rod 22. Two active pulleys 24 are fixedly sleeved on the power rod 22. The power rod 22 is also fixedly sleeved with a dial wheel 23. The two power rods 22 are located in the transmission cavity 21 and one end is fixedly connected to two driven pulleys 25. The active pulley 24 and the driven pulley 25 are sleeved with a synchronous belt 26. The dial wheel 23 is used to drive the rotation of multiple screw rods 19, thereby realizing the movement of the carrying block 7. When the position of the carrying block 7 needs to be adjusted, the carrying block 7 can be moved away from the locking plate 14. In this case, the conductive copper sheet 9 and the conductive copper bar 10 are no longer in contact, thereby avoiding the phenomenon of wear of the conductive position when the sliding carrying block 8 is adjusted.

[0031] The end of the crossbar 8 is vertically fixed to the bottom end of the conductive column 15 near one side of the conductive copper strip 10. The conductive column 15 is fixed to and electrically connected to the conductive copper strip 10. The conductive column 15 passes through the plate-type shell 1. The terminal 3 is fixed to one side of the top surface of the plate-type shell 1. The conductive column 15 is fixedly embedded in the inside of the terminal 3. The conductive column 15 is electrically connected to the terminal 3. A bottom opening 27 is provided on the bottom surface of the plate-type shell 1 corresponding to the position of the thumbwheel 23. The bottom of the thumbwheel 23 passes through the bottom opening 27. Two friction blocks 28 are fixed on both sides of the bottom opening 27. The friction blocks 28 contact the side walls of the thumbwheel 23. The friction blocks 28 are used to fix the thumbwheel 23 to prevent it from rotating when there is no external force.

[0032] Example 3:

[0033] See also Figure 1-6 , which is a second embodiment of the present invention. This embodiment is based on the above two embodiments. When the position of the connector 11 needs to be adjusted, the dial 23 is dialed to move the side strip 4 to a position away from the locking plate 14, so that the conductive copper sheet 9 leaves the conductive copper bar 10 and the rubber block 13 leaves the locking plate 14. Then, the sliding connector 11 is adjusted to a position so that all connectors 11 correspond to the positions of the battery cell interfaces. Then, the dial 23 is dialed in the opposite direction to move the side strip 4 to a position close to the locking plate 14, so that the conductive copper sheet 9 contacts the conductive copper bar 10 to achieve electrical connection, and the rubber block 13 is pressed against the locking plate 14 to form a limit, thereby completing the adjustment. The carrying block 7 of the present invention is in a sliding connection mode and can be adjusted to any position. In this way, the connector 11 at the bottom will also change its position accordingly. In this way, after replacing different types of battery cells, the connector 11 can be adjusted to the battery cell interface position for mutual connection without replacing the bus bar, which is convenient to use.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A busbar assembly for a battery module, comprising a plate-shaped shell (1), characterized in that: The bottom surface of the plate-shaped shell (1) is provided with a plurality of bottom cavities (2), the bottom cavities (2) are horizontally slidably connected to the side strips (4), the side walls of the side strips (4) are provided with T-shaped sliding grooves (5), the T-shaped sliding grooves (5) are horizontally slidably connected to the T-shaped sliding blocks (6), the side walls of the T-shaped sliding blocks (6) are fixedly connected to the carrying blocks (7), and the top end of the connecting head (11) is fixedly embedded in the bottom surface of the carrying blocks (7); A cross bar (8) is fixedly connected horizontally in the bottom cavity (2); a through hole (12) is horizontally opened on the carrying block (7); a conductive copper bar (10) is fixedly connected to the side of the cross bar (8) close to the side strip plate (4); a conductive copper sheet (9) is fixedly connected to the side of the through hole (12) close to the side strip plate (4); the conductive copper sheet (9) contacts and is electrically connected to the conductive copper bar (10); and the conductive copper sheet (9) is fixedly connected to and electrically connected to the top side wall of the connector (11).

2. A busbar assembly for a battery module according to claim 1, characterized in that: The bottom cavity (2) is fixedly connected to a locking plate (14) on a side away from the side strip plate (4), and the surface of the locking plate (14) is a rough structure. The carrying block (7) is fixedly connected to a rubber block (13) on a side close to the locking plate (14), and the rubber block (13) contacts the surface of the locking plate (14). The inner side wall of the T-shaped slide groove (5) is fixedly connected to a rubber plate (29), and the side wall of the T-shaped slide block (6) contacts the surface of the rubber plate (29).

3. The busbar assembly for a battery module according to claim 1, characterized in that: A plurality of short slide grooves (16) are provided on both sides of the plurality of bottom cavities (2), two power slide blocks (17) are fixedly connected on both sides of the side strip plates (4), and the power slide blocks (17) are slidably connected in the two short slide grooves (16).

4. A busbar assembly for a battery module according to claim 3, characterized in that: Two transmission rods (18) are rotatably connected inside the two sides of the plate-shaped shell (1), and the two transmission rods (18) pass through a plurality of short slide grooves (16). The transmission rods (18) are fixedly sleeved with screw rods (19) in the short slide grooves (16), and a threaded sleeve (20) is fixedly connected inside the power slider (17), and the screw rod (19) is threadedly connected to the threaded sleeve (20).

5. A busbar assembly for a battery module according to claim 4, characterized in that: A transmission cavity (21) is provided on one side of the plate-shaped shell (1), the transmission cavity (21) is parallel to the plurality of bottom cavities (2), the ends of the two transmission rods (18) are both located in the transmission cavity (21), the center of the transmission cavity (21) is horizontally rotatably connected to a power rod (22), two driving pulleys (24) are fixedly sleeved on the power rod (22), a dial wheel (23) is also fixedly sleeved on the power rod (22), one end of the two power rods (22) located in the transmission cavity (21) is fixedly connected to two driven pulleys (25), and a synchronous belt (26) is sleeved on the driving pulley (24) and the driven pulley (25).

6. A busbar assembly for a battery module according to claim 5, characterized in that: The end of the cross bar (8) is vertically fixed to the bottom end of the conductive column (15) near one side of the conductive copper strip (10); the conductive column (15) is fixed to and electrically connected to the conductive copper strip (10); the conductive column (15) passes through the plate-shaped shell (1); one side of the top surface of the plate-shaped shell (1) is fixed to the terminal (3); the conductive column (15) is fixedly embedded in the terminal (3); the conductive column (15) is electrically connected to the terminal (3); a bottom opening (27) is provided on the bottom surface of the plate-shaped shell (1) at a position corresponding to the thumbwheel (23); the bottom of the thumbwheel (23) passes through the bottom opening (27); two friction blocks (28) are fixed to both sides of the bottom opening (27); the friction blocks (28) contact the side walls of the thumbwheel (23).

Images