Integrated busbar collecting plate for battery string connection

Abstract

The utility model discloses integrated female bus collection board for battery series connection, including blistering isolation tray, flexible circuit board and electric connector, the first long groove is provided on the tray body of blistering isolation tray, the flexible circuit board is installed on the first long groove, a plurality of second installation grooves are arranged at the both sides of first long groove, and the connecting piece of electric connector is installed on the second installation groove, the fifth connecting piece is provided on the flexible circuit board, the recess is provided in one side of fifth connecting piece, and the recess is connected with connecting piece. Through the recess in one side of fifth connecting piece and connecting piece connection, avoid or reduce the clearance or gap between recess and connecting piece, improve the assembly and the welding efficiency, avoid the false welding formed between fifth connecting piece and connecting piece, easily form stable electric connection, improve the quality and service life of product.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, specifically to an integrated busbar acquisition board for battery series connection. Background Technology

[0002] A battery module is an intermediate-level component in a battery system, consisting of multiple cells connected in series or parallel. A typical battery module includes cells, connectors, a battery management system (BMS), and a casing; connectors are used to connect the cells to achieve the required voltage and capacity. The integrated busbar is a crucial electrical connection component within the battery module. It mainly consists of a blister pack spacer, mounting plates on the spacer, and electrical connectors. The blister pack spacer is the core framework of the battery electrical connection assembly, significantly impacting the strength, stability, and safety of the electrical connection.

[0003] CN117937061A describes a battery pack series integrated busbar based on vacuum forming technology. The flexible circuit board is connected to the electrical connector via a nickel strip. During installation, the nickel strip is required to be attached to the electrical connector before soldering. However, due to manufacturing and processing errors or tolerances, gaps may exist between the nickel strip and the electrical connector, resulting in a poor solder joint between the nickel strip and the electrical connector, which affects the performance and lifespan of the product. Utility Model Content

[0004] To address the aforementioned technical problems in the existing technology, this utility model provides an integrated busbar acquisition board for battery series connection.

[0005] This utility model discloses an integrated busbar acquisition board, including a blister packer, a flexible circuit board, and an electrical connector. The blister packer has a first elongated groove on its body, and the flexible circuit board is mounted on the first elongated groove. Multiple second mounting grooves are spaced apart on both sides of the first elongated groove, and the connecting piece of the electrical connector is mounted on the second mounting groove. A fifth connecting piece is provided on the flexible circuit board, and a recess is provided on one side of the fifth connecting piece, the recess being connected to the connecting piece.

[0006] Preferably, the fifth connecting piece has a Z-shaped structure; the recess is interference-fitted with the connecting piece.

[0007] Preferably, a connecting portion is provided on one side of the flexible circuit board, and the fifth connecting piece is mounted on the connecting portion;

[0008] The connecting part is provided with a third through hole on the inner side and / or a fourth through hole on one side.

[0009] Preferably, a temperature measuring groove is provided on the first elongated groove, and the first bracket is installed on the temperature measuring groove;

[0010] The temperature sensor is mounted on the first bracket.

[0011] Preferably, the first elongated groove, the second mounting groove, and the temperature measuring groove are each provided with a fitting boss.

[0012] The flexible circuit board is mounted on the first long slot by at least one mating boss, the connecting piece of the electrical connector is mounted on the second mounting slot by at least one mating boss, and the first bracket is mounted on the temperature measuring slot by at least one mating boss.

[0013] The back of the second mounting slot is provided with a cell mounting position;

[0014] The first long groove is provided with a plurality of first through holes at intervals, and the first bracket is installed on the first through holes.

[0015] Preferably, a connecting groove that mates with the fifth connecting piece is provided between the first elongated groove and the second mounting groove;

[0016] The free end of the flexible circuit board is provided with a connector;

[0017] At least one second through hole is provided on the outer side of the disk.

[0018] Preferably, a mounting boss is provided on one side of the disc body, and the connector is mounted on the mounting boss;

[0019] A crease is provided between the disc body and the mounting boss.

[0020] Preferably, two first elongated grooves are provided on each side of the disc body.

[0021] A tear mark is provided between the two first long slots;

[0022] The connection components include a first connection component and a second connection component.

[0023] The first connecting component and the second connecting component are respectively disposed on a first long slot and a second mounting slot on one side thereof.

[0024] Preferably, the connecting piece includes a first connecting piece, an end connecting piece, an intermediate connecting piece, and a fourth connecting piece.

[0025] The second mounting groove, which mates with the first connecting piece, extends at an angle from one side of the first long groove to the other side;

[0026] A second mounting groove that mates with the end connecting piece and one electrode of the battery cell is located outside the first long groove;

[0027] The intermediate connecting piece has a dividing boss in the middle, and the two sides of the dividing boss are respectively connected to one electrode of one battery cell and another electrode of another battery cell.

[0028] The two sides of the fourth connecting piece are respectively connected to the fifth connecting pieces of the two flexible circuit boards.

[0029] Preferably, an insulating element is provided in the middle of the fourth connecting piece, the insulating element comprising insulating powder disposed in the middle of the fourth connecting piece and insulating silicone disposed on the outside of the insulating powder.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting the fifth connecting piece with the connecting piece through the recess on one side, gaps or crevices between the recess and the connecting piece are avoided or reduced, assembly and welding efficiency is improved, incomplete welds between the fifth connecting piece and the connecting piece are avoided, stable electrical connections are easily formed, and product quality and service life are improved. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the integrated busbar acquisition board for battery series connection according to this utility model;

[0032] Figure 2 This is a schematic diagram of the battery cell mounting position;

[0033] Figure 3 This is a schematic diagram of the installation of the fourth connecting piece;

[0034] Figure 4 This is a schematic diagram of the installation of the end connector;

[0035] Figure 5 This is a diagram illustrating tear marks and creases;

[0036] Figure 6 This is a schematic diagram of the installation of a flexible circuit board;

[0037] Figure 7 This is a schematic diagram of the installation of the fifth connecting piece and the electrical connector.

[0038] The diagram shows: 1. Blister tray, 11. Tray body, 12. First long groove, 121. Temperature measuring groove, 122. Connecting groove, 13. Second mounting groove, 14. Fitting boss, 15. First through hole, 16. Battery cell mounting position, 17. First connecting assembly, 18. Second connecting assembly, 19. Second through hole.

[0039] 2 Flexible circuit board, 21 Fifth connecting piece, 22 Recess, 23 Connecting part, 25 Connector, 26 Third through hole, 27 Fourth through hole,

[0040] 3. Electrical connector; 31. First connecting piece; 32. Middle connecting piece; 321. Separating boss; 33. End connecting piece; 35. Fourth connecting piece; 351. Insulator; 36. Connecting piece.

[0041] 4 First bracket, 5 Tear mark, 6 Fold mark, 61 Mounting boss. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings:

[0044] Example 1. As... Figure 1 and Figure 7 An integrated busbar acquisition board for battery series connection based on vacuum forming process includes a vacuum forming isolation plate 1, a flexible printed circuit board (FPC) 2, and an electrical connector 3. The vacuum forming isolation plate 1 has a first elongated groove 12 on its plate body 11, and the flexible printed circuit board 2 is mounted on the first elongated groove 12. Multiple second mounting grooves 13 are spaced apart on both sides of the first elongated groove 12, and the connecting piece 36 of the electrical connector 3 is mounted on the second mounting groove 13. A fifth connecting piece 21 is provided on the flexible printed circuit board 2, and a recess 22 is provided on one side of the fifth connecting piece 21, and the recess 22 is connected to the connecting piece 36.

[0045] By connecting the fifth connecting piece 21 to the connecting piece 36 through the recess 22 on one side, gaps or seams between the recess 22 and the connecting piece 36 are avoided or reduced, improving assembly and welding efficiency, avoiding false welds between the fifth connecting piece 21 and the connecting piece 36, facilitating the formation of stable electrical connections, and improving product quality and service life.

[0046] More specifically, the fifth connecting piece 21 has a Z-shaped structure; the recess 22 is interference-fitted with the connecting piece 36. The fifth connecting piece can be made of metal, such as nickel, and the Z-shaped structure gives it a certain degree of elasticity. When the cover is installed on the upper side of the flexible circuit board 2 and the electrical connector 3, it can cover the fifth connecting piece and will lift up.

[0047] Figure 7 The diagram also shows a connecting portion 23 on one side of the flexible circuit board 2, on which a fifth connecting piece 21 is mounted. A third through hole 26 is provided inside the connecting portion 23 and / or a fourth through hole 27 is provided on one side. Both sides of the connecting portion 23 are connected to the main body of the flexible circuit board 2. These through holes increase the flexibility of the connecting portion 23, effectively adapting to and absorbing the effects of thermal expansion of the fifth connecting piece 21 and the connecting piece 36, while ensuring the electrical connection of the connecting portion 23 to the flexible circuit board 2 and the connection strength of the connecting portion 23.

[0048] The circuit structure of the flexible circuit board 2 is existing technology and will not be described in detail here. The circuit structure of the flexible circuit board 2 is typically used for parallel and series connection of battery cells / cells, and can also be used to receive BMS monitoring data, such as temperature data, current, voltage, etc.

[0049] Example 2. (As shown) Figures 1-6 A thermoformed isolation tray 1 includes a tray body 11 and a first elongated groove 12 disposed on the upper side of the tray body 11. Multiple second mounting grooves 13 are spaced apart on both sides of the first elongated groove 12. A temperature measuring groove 121 is disposed on the first elongated groove 12, and a first bracket 4 is mounted on the temperature measuring groove 121. The connecting assembly includes a flexible circuit board 2 and an electrical connector 3. The first elongated groove 12 mates with the flexible circuit board 2, the second mounting grooves 13 mate with the electrical connector 3, and the first bracket 4 mates with a temperature sensor (not shown in the figure). The temperature sensor is connected to the flexible circuit board 2.

[0050] A first long groove 12 that mates with the flexible circuit board 2 and a second mounting groove that mates with the electrical connector 3 are pre-set on the blister tray 1. A first bracket 4 for mounting the temperature sensor is also provided. This facilitates the installation and integration of the flexible circuit board 2, the electrical connector 3 and the temperature sensor, meeting the needs of temperature detection as well as the needs of large-scale production and assembly.

[0051] The first elongated slot 12, the second mounting slot 13, and the temperature measuring slot 121 are each provided with a mating boss 14. The flexible circuit board 2 is mounted on the first elongated slot 12 via at least one mating boss 14. The connecting piece 36 of the electrical connector 3 is mounted on the second mounting slot 13 via at least one mating boss 14. The first bracket 4 is mounted on the temperature measuring slot 121 via at least one mating boss 14. The mating bosses 14 facilitate welding, fixing, riveting, or bonding.

[0052] like Figure 2 The second mounting groove 13 has a battery cell mounting position 16 on its back side for mounting the battery cell. After mounting, the electrodes of the battery cell are connected to the connecting piece 36 of the electrical connector 3.

[0053] like Figure 1 and Figure 5 The flexible circuit board 2 is electrically connected to the connecting piece 36 of the electrical connector 3 via the fifth connecting piece 21, such as... Figure 3 A connecting groove 122 is provided between the first long groove 12 and the second mounting groove 13 to cooperate with the fifth connecting piece 21; a connector 25 is provided at the free end of the flexible circuit board 2.

[0054] The outer side of the disk body 11 is provided with at least one second through hole 19 for removing material and achieving weight reduction. Figure 1A flexible circuit board was removed from the middle. Figures 2-4 Two flexible circuit boards were removed.

[0055] The connecting piece 36 of the electrical connector 3 includes a first connecting piece 31, an end connecting piece 33, an intermediate connecting piece 32, and a fourth connecting piece 35. A second mounting groove 13, which mates with the first connecting piece 31, extends obliquely from one side of the first long groove 12 to the other. Figure 4 The end connecting piece 33 cooperates with one electrode of the battery cell, and the second mounting groove 13 that cooperates with the end connecting piece 33 is located outside the first long groove 12; the middle connecting piece 32 has a dividing boss 321 in the middle, and the two sides of the dividing boss 321 are respectively connected to one electrode of one battery cell and another electrode of another battery cell; the two sides of the fourth connecting piece 35 are respectively connected to the fifth connecting pieces 21 of the two flexible circuit boards 2.

[0056] An insulating component 351 is provided on the central protrusion of the fourth connecting piece 35. The insulating component 351 includes insulating powder (not shown in the figure) disposed in the central part of the fourth connecting piece 35 and insulating silicone on the outside of the insulating powder.

[0057] The temperature measuring groove 121 can be set on the bottom wall of the first long groove 12. One end of the first bracket 4 extends into the second mounting groove 13, and the connecting piece 36 is installed on the outside of the first bracket 4, which facilitates the fixing of the first bracket 4 and the transfer of temperature of the connecting piece 36 to the first bracket 4 and the temperature sensor.

[0058] Example 3. A plurality of first through holes 15 are provided at intervals on the first long groove 12. The first bracket 4 is installed on the first through holes 15. The first through holes 15 can be used for ventilation and removal of material from the disc 11, and can also provide installation space for the temperature sensor.

[0059] Example 4. (As shown) Figure 5 A mounting boss 61 is provided on one side of the disc body 11, and the connector 25 is mounted on the mounting boss 61; a crease 6 is provided between the disc body 11 and the mounting boss 61. This allows for an advantageous mounting of the connector 25, which is used to connect to downstream detection and power supply mechanisms. The flexible circuit board is used for high and low voltage connections; more specifically, the flexible circuit board is used to receive temperature sampling signals and voltage / current sampling signals. The electrical connection structure of the flexible circuit board 2 is prior art and will not be described further in this invention.

[0060] Two first long grooves 12 are respectively provided on both sides of the disc body 11, and a tear 5 is provided between the two first long grooves 12; the connecting components include a first connecting component 17 and a second connecting component 18, and the first connecting component 17 and the second connecting component 18 are respectively provided on a first long groove 12 and a second mounting groove 13 on one side.

[0061] The two first long grooves 12 can be torn open through tear 5, allowing for independent installation of the connecting components. This reduces capacity / voltage, enabling mold reuse and reducing the cost of molding the disc body 11. After tearing, the original installation positions of the fourth connecting piece 35 can be filled with the two end connecting pieces 33. Multiple through holes are spaced apart on tear 5 and crease 6 to reduce the intensity of tearing or bending.

[0062] The thermoformed isolation tray has a pre-designed first long slot 12, a second mounting slot 13, and a temperature measuring slot 121, which facilitates the installation and assembly of connecting components and temperature sensors; through the design of two sets of first long slots 12, in Figure 1 Two sets of battery cells can be installed horizontally, with each set capable of holding 16 battery cells, but this is not the only possibility.

[0063] Compared to pipe connections, flexible circuit boards can increase wiring density, achieve lightweight design, and offer better flexibility. The blister pack of this invention can be mass-produced using molds, facilitating large-scale assembly after production.

[0064] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated busbar acquisition board for battery series connection, characterized in that, Includes blister packs, flexible circuit boards, and electrical connectors. The blister tray has a first long groove on its body, and the flexible circuit board is mounted on the first long groove. Multiple second mounting slots are provided at intervals on both sides of the first long slot, and the connecting piece of the electrical connector is installed on the second mounting slot; The flexible circuit board is provided with a fifth connecting piece, and a recess is provided on one side of the fifth connecting piece, the recess being connected to the connecting piece.

2. The integrated busbar acquisition board according to claim 1, characterized in that, The fifth connecting piece has a Z-shaped structure; The recessed portion is interference-fitted with the connecting piece.

3. The integrated busbar acquisition board according to claim 1, characterized in that, A connecting portion is provided on one side of the flexible circuit board, and a fifth connecting piece is mounted on the connecting portion; The connecting part is provided with a third through hole on the inner side and / or a fourth through hole on one side.

4. The integrated busbar acquisition board according to claim 1, characterized in that, A temperature measuring groove is provided on the first long groove, and a first bracket is installed on the temperature measuring groove; The temperature sensor is mounted on the first bracket.

5. The integrated busbar acquisition board according to claim 4, characterized in that, The first elongated groove, the second mounting groove, and the temperature measuring groove are each provided with a fitting boss. The flexible circuit board is mounted on the first long slot by at least one mating boss, the connecting piece of the electrical connector is mounted on the second mounting slot by at least one mating boss, and the first bracket is mounted on the temperature measuring slot by at least one mating boss. The back of the second mounting slot is provided with a cell mounting position; The first long groove is provided with a plurality of first through holes at intervals, and the first bracket is installed on the first through holes.

6. The integrated busbar acquisition board according to claim 4, characterized in that, A connecting groove that mates with the fifth connecting piece is provided between the first long groove and the second mounting groove. The free end of the flexible circuit board is provided with a connector; At least one second through hole is provided on the outer side of the disk.

7. The integrated busbar acquisition board according to claim 6, characterized in that, A mounting boss is provided on one side of the disc body, and the connector is mounted on the mounting boss. A crease is provided between the disc body and the mounting boss.

8. The integrated busbar acquisition board according to claim 4, characterized in that, Two first elongated grooves are respectively provided on both sides of the disc body. A tear mark is provided between the two first long slots; The connection components include a first connection component and a second connection component. The first connecting component and the second connecting component are respectively disposed on a first long slot and a second mounting slot on one side thereof.

9. The integrated busbar acquisition board according to claim 4, characterized in that, The connecting piece includes a first connecting piece, an end connecting piece, an intermediate connecting piece, and a fourth connecting piece. The second mounting groove, which mates with the first connecting piece, extends at an angle from one side of the first long groove to the other side; A second mounting groove that mates with the end connecting piece and one electrode of the battery cell is located outside the first long groove; The intermediate connecting piece has a dividing boss in the middle, and the two sides of the dividing boss are respectively connected to one electrode of one battery cell and another electrode of another battery cell. The two sides of the fourth connecting piece are respectively connected to the fifth connecting pieces of the two flexible circuit boards.

10. The integrated busbar acquisition board according to claim 9, characterized in that, An insulating component is provided in the middle of the fourth connecting piece. The insulating component includes insulating powder disposed in the middle of the fourth connecting piece and insulating silicone disposed on the outside of the insulating powder.

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