Integrated busbar of battery module

Abstract

The utility model discloses an integrated busbar of a battery module, which comprises a PET hot-pressing film I and a PET hot-pressing film II, the PET hot-pressing film I and the PET hot-pressing film II are mutually bonded, and the top of the PET hot-pressing film I is respectively bonded with a first series aluminum bar, a second series aluminum bar, a third series aluminum bar, a PCB assembly I, a PCB assembly II and a positive and negative aluminum bar. And the PCB assembly I is connected with the second series aluminum bar through a nickel sheet I. The battery module relates to the technical field of battery modules, all integrated busbar components are mutually independent in processing and manufacturing and are integrally assembled in actual use, and a main body part is an integrated busbar, so that the battery module is simple in structure, convenient to disassemble and assemble, firm in overall performance and simple to mount; tediousness of excessive connection of wire harnesses is avoided, automation operation degree is high, integration is high, the size is small, the module is light and thin, space of the whole module is saved, the whole module is light in weight and convenient, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to an integrated busbar of a battery module. Background Art

[0002] Early battery packs were mostly connected using wiring harnesses. The large number of wiring harnesses made it easy to connect the wires incorrectly. Most importantly, the welding of the wiring harnesses could not be automated, and the module assembly took a long time.

[0003] With the development of battery pack integration technology and the increasing requirements for automated assembly, CCS integrated busbars that use PCB printed circuit boards to replace traditional battery wiring harnesses have been widely used. The existing CCS integrated busbars are mainly composed of signal acquisition components, plastic structural parts, conductive bars, etc., which are connected into a whole through hot pressing or riveting processes. They have low integration, inconvenient installation and high cost. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated busbar of a battery module to solve the problems mentioned in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An integrated busbar of a battery module comprises a first PET hot pressing film and a second PET hot pressing film, wherein the first PET hot pressing film and the second PET hot pressing film are bonded to each other.

[0007] The top of the PET hot-pressed film 1 is respectively bonded with the first series aluminum bar, the second series aluminum bar, the third series aluminum bar, the PCB assembly 1, the PCB assembly 2 and the positive and negative aluminum bars; the PCB assembly 1 is connected to the second series aluminum bar through the nickel sheet 1; the PCB assembly 2 is respectively connected to the first series aluminum bar, the third series aluminum bar and the positive and negative aluminum bars through the nickel sheet 2.

[0008] As a further solution of the utility model: the PCB assembly includes a PCB printed circuit board, the PCB printed circuit board is bonded to the top of a PET hot pressing film, and a connector and a thermistor are respectively arranged on the PCB printed circuit board.

[0009] As a further solution of the utility model: the PCB assembly 2 includes a PCB printed circuit board 2, the PCB printed circuit board 2 is bonded to the top of the PET hot pressing film 1, and the PCB printed circuit board 2 is respectively provided with a connector 2 and a thermistor 2.

[0010] As a further solution of the utility model: two second series-connected aluminum bars are provided, and four third series-connected aluminum bars are provided.

[0011] As a further solution of the utility model: the nickel sheet is arranged on a PCB printed circuit board.

[0012] As a further solution of the utility model: the second nickel sheet is arranged on a second PCB printed circuit board.

[0013] Beneficial Effects

[0014] The utility model provides an integrated busbar of a battery module. Compared with the prior art, it has the following advantages:

[0015] Beneficial effects:

[0016] The present application makes each integrated busbar component independent in processing and manufacturing, and assembles them as a whole during actual use. The main part is an integrated integrated busbar with a simple structure, easy disassembly and assembly, reliable overall performance, and simple installation. It avoids the tediousness of excessive connection of wiring harnesses, has a high degree of automation, high integration, small size, and light weight, saving overall module space, making the overall module lightweight, convenient, and cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the utility model after removing the second PET hot pressing film;

[0019] Figure 3 It is an exploded view of the utility model.

[0020] In the figure: 1. PET hot pressing film 1; 2. PET hot pressing film 2; 3. First series aluminum bar; 4. Second series aluminum bar; 5. Third series aluminum bar; 6. PCB assembly 1; 61. PCB printed circuit board 1; 62. Connector 1; 63. Thermistor 1; 7. PCB assembly 2; 71. PCB printed circuit board 2; 72. Connector 2; 73. Thermistor 2; 8. Positive and negative aluminum bars; 9. Nickel sheet 1; 10. Nickel sheet 2. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-3As shown, the utility model is an integrated busbar of a battery module, comprising a PET hot pressing film 1 and a PET hot pressing film 2. The opposite side between the PET hot pressing film 1 and the PET hot pressing film 2 is a glue surface. The PET film is an important material for connecting various components. The incoming material is a roll material and needs to be cut into a specified shape. The PET used in the CCS module is relatively large in size and has high requirements for the effective processing area of ​​the equipment. We use laser cutting in the sample stage and small batches, and use knife die high-speed punching for batch production. Lamination is a particularly critical link in this process. By heating and pressurizing the mold, with auxiliary materials such as glass fiber cloth and silicone, the PET thermosetting glue is melted and flows, and the aluminum bar and the PCB board are bonded together. The PET hot pressing film 1 and the PET hot pressing film 2 are bonded to each other; the top of the PET hot pressing film 1 is respectively bonded with a first series aluminum row 3, a second series aluminum row 4, a third series aluminum row 5, a PCB assembly 1 6, a PCB assembly 2 7 and positive and negative aluminum rows 8, and the series aluminum row integrates the battery core welding mark hole, Press-fit positioning holes, NTC avoidance grooves, bends, etc. We use continuous die stamping technology to prepare them. The PCB assembly 6 is connected to the second series aluminum row 4 through a nickel sheet 9, and the PCB assembly 2 7 is connected to the first series aluminum row 3, the third series aluminum row 5 and the positive and negative aluminum row 8 through a nickel sheet 2 10. In order to reduce the internal resistance of the input / output locking surface, we use polymer diffusion welding equipment to weld the nickel sheet to the positive and negative aluminum row mounting surface. The imported IPG1000W continuous fiber laser system is used to weld the nickel sheet on the PCB to the aluminum bar to form a voltage collection circuit. At the same time, a CCD module is equipped to realize the detection of the number of solder joints after welding. By making each integrated busbar component independent of each other in processing and manufacturing, it is assembled in one piece during actual use. The main part is an integrated integrated busbar with a simple structure, easy disassembly and assembly, reliable overall performance, simple installation, avoiding the tediousness of excessive connection of the wiring harness, high degree of automation, high integration, small size, thinness, saving overall module space, making the overall module lightweight, convenient, and cost-saving.

[0023] The PCB assembly 6 includes a PCB printed circuit board 61, which is bonded to the top of the PET hot pressing film 1. A connector 62 and a thermistor 63 are respectively provided on the PCB printed circuit board 61.

[0024] The PCB assembly 27 includes a PCB printed circuit board 271, which is bonded to the top of the PET hot pressing film 1. The PCB printed circuit board 271 is respectively provided with a connector 272 and a thermistor 273. The electronic component NTC (thermistor) is sealed and fixedly protected by epoxy glue dispensing. Since CCS is an electrical performance part and integrates various electronic components, in order to ensure the safety of the subsequent battery pack, a medium voltage tester is used to perform 100% electrical performance testing (conduction, withstand voltage, insulation, NTC resistance, etc.) on the product.

[0025] There are two second series-connected aluminum bars 4 , and there are four third series-connected aluminum bars 5 .

[0026] The nickel sheet 9 is arranged on a PCB printed circuit board 61 .

[0027] The nickel sheet 10 is disposed on a PCB printed circuit board 71 .

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] The working principle of the utility model is as follows: the first series aluminum bar 3, the second series aluminum bar 4, the third series aluminum bar 5, the PCB printed circuit board 1 61, the PCB printed circuit board 2 71 and the positive and negative aluminum bars 8 are all bonded on the PET hot pressing film 1, then the second series aluminum bar 4 and the PCB printed circuit board 1 61 are welded by using a nickel sheet 9, and the thermistor 1 63 is connected to the PCB printed circuit board 1 61, the first series aluminum bar 3, the third series aluminum bar 5 and the positive and negative aluminum bars 8 are welded to the PCB printed circuit board 2 71 by using a nickel sheet 2 10, and the thermistor 2 73 is connected to the PCB printed circuit board 2 71, then the thermistor 1 63 and the thermistor 2 73 are sealed and fixed by epoxy glue dispensing, then the PET hot pressing film 2 2 is bonded to the PET hot pressing film 1, and the integrated busbar is assembled as a whole, and then vibration test, electrical performance test, and cleaning are performed. By making each integrated busbar component independent of each other in processing and manufacturing, and assembling them as a whole during actual use, the main part is an integrated integrated busbar with simple structure, convenient disassembly and assembly, reliable overall performance, simple installation, avoiding the tediousness of excessive connection of wiring harnesses, high degree of automation, high integration, small size, lightness and thinness, saving overall module space, making the overall module lightweight, convenient and cost-saving.

[0030] 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.

[0031] 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. An integrated busbar of a battery module, characterized in that: It comprises a PET hot pressing film 1 (1) and a PET hot pressing film 2 (2), wherein the PET hot pressing film 1 (1) and the PET hot pressing film 2 (2) are bonded to each other; The top of the PET hot pressing film 1 (1) is respectively bonded with a first series aluminum bar (3), a second series aluminum bar (4), a third series aluminum bar (5), a PCB assembly 1 (6), a PCB assembly 2 (7) and positive and negative aluminum bars (8); the PCB assembly 1 (6) is connected to the second series aluminum bar (4) through a nickel sheet 1 (9); the PCB assembly 2 (7) is respectively connected to the first series aluminum bar (3), the third series aluminum bar (5) and the positive and negative aluminum bars (8) through a nickel sheet 2 (10).

2. The integrated busbar of a battery module according to claim 1, characterized in that: The PCB assembly (6) comprises a PCB printed circuit board (61), which is bonded to the top of a PET hot pressing film (1), and a connector (62) and a thermistor (63) are respectively arranged on the PCB printed circuit board (61).

3. The integrated busbar of a battery module according to claim 1, characterized in that: The PCB assembly 2 (7) comprises a PCB printed circuit board 2 (71), wherein the PCB printed circuit board 2 (71) is bonded to the top of the PET hot pressing film 1 (1), and the PCB printed circuit board 2 (71) is respectively provided with a connector 2 (72) and a thermistor 2 (73).

4. The integrated busbar of a battery module according to claim 1, characterized in that: There are two second series-connected aluminum bars (4) and four third series-connected aluminum bars (5).

5. The integrated busbar of a battery module according to claim 2, characterized in that: The nickel sheet (9) is arranged on a PCB printed circuit board (61).

6. The integrated busbar of a battery module according to claim 3, characterized in that: The second nickel sheet (10) is arranged on a second PCB printed circuit board (71).

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