Splicing type information acquisition assembly of battery module and battery pack

Abstract

The utility model discloses a battery module's splice type information acquisition subassembly and battery pack, including at least one IBB module, flexible connection mechanism, connecting aluminum row, acquisition harness assembly and BMS management module, IBB module includes a plurality of IBB subassembly, every two adjacent IBB subassembly is connected through flexible connection mechanism and connecting aluminum row, the BMS management module includes the BMS management module, the BMS management module includes the BMS management module, the BMS management module includes the BMS management module, and the BMS management module includes the BMS management module. Wherein one end of one IBB assembly is provided with an acquisition wire harness assembly, and the acquisition wire harness assembly is connected with the BMS management module. Through the golden finger, the connector seat and the connector head, and through the connection among the golden finger, the connector seat and the connector head, conventional connector terminals and low-voltage wire harnesses are omitted, the wire harnesses are prevented from being disordered, the installation is convenient, and the cost can be reduced; a plurality of IBB assemblies can be spliced, size mistake proofing can be achieved, high-low voltage connection errors cannot occur when a super-large module is assembled, meanwhile, the IBB assemblies are high in integration degree, automatic production can be achieved, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, and in particular to a spliced ​​information acquisition component of a battery module and a battery pack. Background Art

[0002] To improve volume utilization, existing new energy battery packs often utilize large modules and CTP (cell to pack) structures. This approach eliminates unnecessary components within a limited space and increases the number of cells. This improves both volume utilization and energy density. However, the high volume utilization of the CTP solution, coupled with its inherent process requirements and near-impossibility of disassembly and repair, is not suitable for all battery pack applications. Therefore, another application option is a large module solution with flexible assembly and disassembly. The CCS (Cell Contact System), which integrates battery cells, temperature sensors, and overcurrent components, is often used in the industry for signal acquisition in battery modules. However, applying conventional CCS to very large modules presents the following challenges: 1. Since the CCS bracket requires molds (injection molding or vacuum forming), the molds are complex to manufacture and bulky, making molding difficult and costly. 2. Applying CCS to very large modules can be difficult, with numerous and cluttered wiring harnesses, prone to installation errors, and potentially short circuits and sparks, significantly reducing module production efficiency. Utility Model Content

[0003] The purpose of the present utility model is to provide a spliced ​​information acquisition component and a battery pack of a battery module, so as to solve the above-mentioned technical problems.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A spliced ​​information collection component for a battery module includes at least one IBB module (an integrated busbar module for a battery), a flexible connection mechanism, a connecting aluminum bar, a collection harness assembly, and a BMS management module. The IBB module includes several IBB assemblies, and two adjacent IBB assemblies are connected via the flexible connection mechanism and the connecting aluminum bar. The collection harness assembly is provided at one end of one of the IBB assemblies, and the collection harness assembly is connected to the BMS management module.

[0006] Preferably, the flexible connection mechanism includes a gold finger, a connector seat and a connector head, the connector seat is provided on one of the IBB components, one end of the gold finger is connected to another IBB component, and the other end of the gold finger is provided with the connector head, which cooperates with the connector seat.

[0007] Preferably, the connecting aluminum bar is connected to the two IBB assemblies by welding.

[0008] Preferably, a circuit board connector is further included, wherein one end of the IBB component is provided with the circuit board connector, one end of the acquisition harness assembly is connected to the circuit board connector, and the other end of the acquisition harness assembly is connected to the BMS management module.

[0009] Preferably, each of the IBB components includes a PET (polyethylene terephthalate) lower film, a PET upper film, a flexible circuit board assembly and an aluminum busbar assembly, the flexible circuit board assembly and the aluminum busbar assembly are respectively arranged between the PET lower film and the PET upper film, and the aluminum busbar assembly is connected to the flexible circuit board assembly.

[0010] As a further preference, a connecting angle is provided on the side wall of the flexible circuit board assembly, and the aluminum busbar assembly is connected to the connecting angle.

[0011] As a further preference, the PET lower film, the PET upper film, the flexible circuit board assembly and the aluminum busbar assembly are connected by hot pressing and cold pressing.

[0012] Preferably, two IBB modules are provided, and each IBB module includes two IBB components.

[0013] A battery pack includes the spliced ​​information acquisition component of the battery module.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the utility model, the flexible connection mechanism includes a gold finger, a connector seat and a connector head. Through the connection between the gold finger, the connector seat and the connector head, the conventional connector terminal and the low-voltage wiring harness are eliminated, the wiring harness is avoided from being cluttered, the installation is facilitated and the cost can be reduced; the IBB components are connected by connecting the aluminum busbar, the connecting copper busbar, fasteners and fixing base required for the conventional connection are eliminated, the connection can be quickly achieved and the cost can be reduced; and several IBB components can be spliced ​​together to form dimensional error prevention, so that high and low voltage connection errors will not occur during the assembly of super-large modules. At the same time, the high integration of the IBB components can be automated for production to improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the use of the spliced ​​information collection component of the battery module in the utility model;

[0017] Figure 2 This is an exploded schematic diagram of the IBB module in the present invention;

[0018] Figure 3 It is a structural diagram of the IBB module in the present utility model;

[0019] Figure 4 This is a schematic diagram of the assembly of the gold finger, connector seat and connector head in the utility model;

[0020] Figure 5 It is an exploded schematic diagram of the IBB assembly in the present invention.

[0021] In the figure: 1. Flexible connection mechanism; 101. Gold finger; 102. Connector seat; 103. Connector head; 2. Connecting aluminum busbar; 3. Collection harness assembly; 4. BMS management module; 5. IBB component; 501. PET lower film; 502. PET upper film; 503. Flexible circuit board assembly; 504. Aluminum busbar assembly; 505. Connection angle; 6. Circuit board connector. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Figure 1 This is a schematic diagram of the use of the spliced ​​information collection component of the battery module in the utility model; Figure 2 This is an exploded schematic diagram of the IBB module in the present invention; Figure 3It is a structural diagram of the IBB module in the present utility model; Figure 4 This is a schematic diagram of the assembly of the gold finger, connector seat and connector head in the utility model; Figure 5 This is an exploded schematic diagram of the IBB assembly in this utility model. Figures 1 to 5 As shown in the figure, a preferred embodiment is shown, which shows a spliced ​​information collection component of a battery module, including at least one IBB module, a flexible connection mechanism 1, a connecting aluminum bar 2, a collection harness assembly 3 and a BMS management module 4. The IBB module includes a plurality of IBB (integrated busbar for batteries) components 5. Two adjacent IBB components 5 are connected by a flexible connection mechanism 1 and a connecting aluminum bar 2. One end of an IBB component 5 is provided with a collection harness assembly 3, and the collection harness assembly 3 is connected to the BMS management module 4. In this embodiment, see Figure 2 and Figure 3 As shown, two IBB modules are provided, each comprising two IBB assemblies 5. The two IBB assemblies 5 in each IBB module are connected via a flexible connection mechanism 1 and a connecting aluminum busbar 2. This allows the assembly of 102 battery cells through the four IBB assemblies 5. For the small IBB assemblies 5, expensive and complex molds are not necessary; simple die-cutting and hot-pressing can be used to form the assembly, reducing costs. Furthermore, the IBB assemblies 5 do not require wiring harnesses or copper busbar fasteners for connection.

[0026] The BMS management module 4 is electrically connected to the data acquisition harness assembly 3, which is in turn electrically connected to the flexible circuit board assembly 503 in the IBB component 5. The BMS management module 4 and the data acquisition harness assembly 3 are both common structures on the market.

[0027] The low-voltage signal connection between two adjacent IBB assemblies 5 is achieved through the flexible connection mechanism 1 , and the high-voltage part is welded and connected by connecting the aluminum bars 2 .

[0028] Furthermore, as a preferred embodiment, the flexible connection mechanism 1 includes a gold finger 101, a connector seat 102, and a connector head 103. The connector seat 102 is provided on one IBB assembly 5. One end of the gold finger 101 is connected to another IBB assembly 5, and the other end of the gold finger 101 is provided with a connector head 103, which mates with the connector seat 102. In this embodiment, two adjacent IBB assemblies 5 can be connected via a single flexible connection mechanism 1, or via multiple flexible connection mechanisms 1, the specific number of which can be selected as needed. The gold finger 101 is a flexible circuit board gold finger 101, which is used to electrically connect to the flexible circuit board assembly 503 in the IBB assembly 5, while the connector seat 102 is soldered to the flexible circuit board assembly 503 via a surface mount process. The arrangement of the gold finger 101, connector seat 102, and connector head 103 enables electrical connection between two adjacent IBB assemblies 5, eliminating conventional connector terminals and low-voltage wiring harnesses, reducing wiring clutter, facilitating installation, and reducing costs. The connector head 103 is electrically connected to the connector base 102, and the two can be disassembled. The structure of the gold finger 101, the connector base 102 and the connector head 103 can be seen in Figure 4 shown.

[0029] Furthermore, as a preferred embodiment, the connecting aluminum busbar 2 is welded to the two IBB assemblies 5 , and the connecting aluminum busbar 2 can be connected to the battery cell poles by laser welding.

[0030] Furthermore, as a preferred embodiment, a circuit board connector 6 is further included. One end of an IBB assembly 5 is provided with the circuit board connector 6. One end of the data acquisition harness assembly 3 is connected to the circuit board connector 6, and the other end of the data acquisition harness assembly 3 is connected to the BMS management module 4. In this embodiment, the circuit board connector 6 is used to electrically connect to the flexible circuit board assembly 503. The circuit board connector 6 cooperates with the data acquisition harness assembly 3 and the BMS management module 4 to output signals from the flexible circuit board assembly 503 to the BMS management module 4. The flexible circuit board assembly 503 is a conventional structure and will not be described in detail here.

[0031] Furthermore, as a preferred embodiment, each IBB assembly 5 includes a PET lower film 501, a PET upper film 502, a flexible circuit board assembly 503, and an aluminum busbar assembly 504. The flexible circuit board assembly 503 and the aluminum busbar assembly 504 are respectively disposed between the PET lower film 501 and the PET upper film 502, and the aluminum busbar assembly 504 is connected to the flexible circuit board assembly 503. The PET lower film 501, the PET upper film 502, the flexible circuit board assembly 503, and the aluminum busbar assembly 504 are connected by hot pressing and cold pressing. The connection can be initially made by hot pressing and then further connected by cold pressing. The flexible circuit board assembly 503 and the aluminum busbar assembly 504 are electrically connected.

[0032] Furthermore, as a preferred embodiment, a connecting angle 505 is provided on the side wall of the flexible circuit board assembly 503, and the aluminum busbar assembly 504 is connected to the connecting angle 505. Figure 5 As shown, the aluminum busbar assembly 504 is disposed on one side or both sides of the flexible circuit board assembly 503 and is welded to the connecting corners 505 on the flexible circuit board assembly 503 .

[0033] When in use, the PET lower film 501, the PET upper film 502, the flexible circuit board assembly 503 and the aluminum busbar assembly 504 are first connected together by hot pressing and cold pressing to form an IBB component 5, and then several IBB components 5 are connected together for overcurrent and signal acquisition of large modules. The two adjacent IBB components 5 are connected at low voltage through the flexible connection mechanism 1. The low-voltage signal acquisition is achieved by transmitting the collected voltage signal to the BMS management module 4 through the mutual cooperation of the gold finger 101, the connector seat 102 and the connector head 103 of the flexible circuit board. The high-voltage connection is achieved by connecting the aluminum busbar 2. The high-voltage overcurrent is achieved by welding the connected aluminum busbar 2 integrated in the IBB component 5 to the battery cell pole.

[0034] In this embodiment, the flexible circuit board assembly 503 is connected to the aluminum busbar assembly 504 for detecting low-voltage signals. Through the setting of the gold finger 101, the connector seat 102 and the connector head 103 of the flexible circuit board, the low-voltage signals detected by the flexible circuit board assembly 503 in several IBB components 5 can be output to the BMS management module 4. The aluminum busbar 2 is directly welded to the battery cell pole, and the aluminum busbar 2 is electrically connected to the flexible circuit board assembly 503, which can output the high-voltage overcurrent signals detected by the flexible circuit board assembly 503 in several IBB components 5 to the BMS management module 4.

[0035] In this embodiment, by providing four IBB components 5, expensive and complex mold development can be omitted, and dimensional error prevention can be achieved. High and low voltage connection errors will not occur during the assembly of ultra-large modules. At the same time, the high integration of IBBs can be automated to improve efficiency.

[0036] The present invention further discloses a battery pack based on the above embodiments, including a spliced ​​information acquisition component of a battery module. The battery pack has a plurality of battery cells, and the connecting aluminum bar 2 can be welded and fixed to the battery cell pole.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A splicing information collection component for a battery module, characterized in that: It includes at least one IBB module, a flexible connection mechanism, a connecting aluminum bar, a collection harness assembly and a BMS management module. The IBB module includes several IBB components. Two adjacent IBB components are connected by the flexible connection mechanism and the connecting aluminum bar. The collection harness assembly is provided at one end of one of the IBB components, and the collection harness assembly is connected to the BMS management module.

2. The battery module splicing information collection component according to claim 1, characterized in that: The flexible connection mechanism includes a gold finger, a connector seat and a connector head. The connector seat is provided on one IBB component. One end of the gold finger is connected to another IBB component. The other end of the gold finger is provided with the connector head, which cooperates with the connector seat.

3. The splicing type information collection component of the battery module according to claim 1, characterized in that: The connecting aluminum bar is welded to the two IBB components.

4. The splicing type information collection component of the battery module according to claim 1, characterized in that: It also includes a circuit board connector, wherein one end of the IBB component is provided with the circuit board connector, one end of the acquisition harness assembly is connected to the circuit board connector, and the other end of the acquisition harness assembly is connected to the BMS management module.

5. The splicing type information collection component of the battery module according to claim 1, characterized in that: Each of the IBB components includes a PET lower film, a PET upper film, a flexible circuit board assembly and an aluminum busbar assembly. The flexible circuit board assembly and the aluminum busbar assembly are respectively arranged between the PET lower film and the PET upper film, and the aluminum busbar assembly is connected to the flexible circuit board assembly.

6. The battery module splicing information collection component according to claim 5, characterized in that: A connecting angle is provided on the side wall of the flexible circuit board assembly, and the aluminum busbar assembly is connected to the connecting angle.

7. The battery module splicing information collection component according to claim 5, characterized in that: The PET lower film, the PET upper film, the flexible circuit board assembly and the aluminum busbar assembly are connected by hot pressing and cold pressing.

8. The battery module splicing information collection component according to claim 1, characterized in that: There are two IBB modules, and each of the IBB modules includes two IBB components.

9. A battery pack, characterized in that: A spliced ​​information acquisition component comprising the battery module according to any one of claims 1 to 8.

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