IBB integrated busbar device for battery module

Abstract

The utility model discloses an IBB integrated busbar device for a battery module. The IBB integrated busbar device comprises a battery module, the film layer assemblies are arranged at the end part of the battery module, a signal acquisition assembly and a current-carrying assembly are arranged between the film layer assemblies, and the signal acquisition assembly is matched with the current-carrying assembly to carry out information acquisition and fixation on a battery cell in the battery module. The IBB integrated busbar is formed by the signal acquisition assembly, the upper layer hot-pressing film, the lower layer hot-pressing film and the current-carrying assembly, the functions of high-voltage series-parallel connection of battery cells, temperature sampling of batteries and voltage sampling of the battery cells are achieved, the problem of assembly complexity is solved, the automation operation degree is improved, meanwhile, the mold opening period is shortened, and the mold development cost is reduced; and meanwhile, the limited structure space is utilized, the number and weight of assembly parts of the module are reduced, the energy density is improved, and the module design brings greater flexibility and reliability.

Description

Technical Field

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

[0002] In order to ensure that the single cells in the battery pack operate within a reasonable range and avoid overcharging, over-discharging and overheating, a cover plate that integrates single cell voltage collection and temperature collection, namely the CCS integrated busbar, is usually designed on the top of the square battery module to realize battery cell status monitoring and balancing control, temperature management, safety protection and other functions.

[0003] IBB integrated busbar can improve the performance and reliability of electric vehicle batteries, and provide a more reliable, energy-efficient and safe solution for the development of electric vehicles. The IBB integrated busbar of the battery module of electric vehicles is a powerful and advanced technology with broad application prospects, which can significantly improve the performance and service life of electric vehicles. It has the characteristics of stable signal transmission, high reliability, light and regular structure, high degree of automation, etc., which is conducive to improving the space utilization rate and assembly efficiency of battery packs, and conforms to the trend of lightweight vehicles, component system integration and large modularization.

[0004] The existing technical solution uses a wire harness integrated cover, which is cumbersome and has a low degree of automation due to the excessive connections of the wire harness, and cannot save customers' assembly labor costs; the mold opening cycle of the plastic pallet for components is long. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art. To achieve the above purpose, an IBB integrated busbar device for a battery module is used to solve the problems raised in the above background technology.

[0006] An IBB integrated busbar device for a battery module, comprising:

[0007] Battery module;

[0008] A membrane layer component is arranged at the end of the battery module, and a signal acquisition component and a current-carrying component are arranged between the membrane layer components. The signal acquisition component cooperates with the current-carrying component to collect information and fix the battery cells in the battery module.

[0009] As a further solution of the utility model: the film layer assembly includes an upper hot-pressed film and a lower hot-pressed film.

[0010] As a further solution of the utility model: the signal acquisition component and the current-carrying component are sequentially arranged between the upper hot-pressing film and the lower hot-pressing film.

[0011] As a further solution of the utility model: the upper hot-pressed film and the lower hot-pressed film are made of PET film material and have a structure formed by heat compression and integration.

[0012] As a further solution of the utility model: the signal acquisition component and the current-carrying component are integrated into an integrated structure through a six-point circle laser welding process.

[0013] As a further solution of the present invention: the signal acquisition component is made of FPC flexible circuit material.

[0014] As a further solution of the utility model: the current-carrying component adopts 1 series O-state aluminum bar material.

[0015] As a further solution of the utility model: the current-carrying component forms a series-parallel connection mode for a plurality of battery cells in the battery module by laser welding.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] By adopting the above technical solution, the IBB integrated busbar is composed of four components, namely, a signal acquisition component, an upper hot pressing film, a lower hot pressing film, and a current-carrying component. It is formed by one-piece hot pressing, has good circuit sealing, good weather resistance, moisture resistance, oxidation resistance, corrosion resistance, etc., excellent performance, and high reliability; it is easy to install, avoiding the tediousness of too many connections of the wiring harness, and has a high degree of automation, saving customers' assembly labor costs; it has high integration, small size, and light weight, saving overall module space, making the overall module lightweight and convenient; it has strong commonality and manufacturability, is easy to modularize and standardize, and saves development costs; at the same time, the circuit has an overcurrent protection design to protect the battery cells, and has high safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings:

[0019] Figure 1 This is a schematic structural diagram of an IBB integrated busbar device according to an embodiment disclosed in the present application;

[0020] Figure 2 It is a schematic diagram of the distribution structure of the membrane layer component, signal acquisition component and current carrying component of the IBB integrated busbar device of the embodiment disclosed in the present application.

[0021] In the figure: 1. Battery module; 2. Membrane layer assembly; 21. Upper hot-pressed film; 22. Lower hot-pressed film; 3. Signal acquisition assembly; 4. Current-carrying assembly. DETAILED DESCRIPTION

[0022] 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.

[0023] Please refer to Figure 1 In an embodiment of the utility model, an IBB integrated busbar device for a battery module includes:

[0024] Battery module 1;

[0025] A membrane layer component 2 is arranged at the end of the battery module 1, and a signal acquisition component 3 and a current carrying component 4 are arranged between the membrane layer components 2. The signal acquisition component 3 cooperates with the current carrying component 4 to collect information and fix the battery cells in the battery module 1.

[0026] In this embodiment, the film layer assembly 2 includes an upper hot-pressed film 21 and a lower hot-pressed film 22 .

[0027] In a specific implementation manner, Figure 2 As shown, the figure is a schematic diagram of the distribution structure of the membrane layer component 2, the signal acquisition component 3 and the current carrying component 4 of the IBB integrated busbar device; the signal acquisition component 3 and the current carrying component 4 are sequentially arranged between the upper hot pressing film 21 and the lower hot pressing film 22.

[0028] In a specific embodiment, the upper hot pressing film 21 and the lower hot pressing film 22 are made of PET film material and are heat-compressed and integrated into an integrally formed structure.

[0029] In a specific embodiment, the signal acquisition component 3 and the current-carrying component 4 are integrated into an integrated structure through a six-point circle laser welding process, and the signal acquisition component 3 is made of FPC flexible circuit material, while the current-carrying component 4 is made of 1 series O-state aluminum bar material, namely current-carrying (aluminum bar).

[0030] Specifically, the signal acquisition component 3 and the current-carrying component 4 are laser welded to form an electrical connection and signal detection structural component. The signal acquisition component 3 and the current-carrying component 4 are wrapped with an upper hot-pressing film 21 and a lower hot-pressing film 22, and a hot-compression integration process is adopted. The above components are integrated into one by a high-temperature oven, and the signal acquisition component 3 is welded to the current-carrying component 4.

[0031] In a specific embodiment, the current-carrying component 4 forms a series-parallel connection mode for several battery cells in the battery module 1 by laser welding. Specifically, multiple battery cells are connected in series and parallel by laser welding, so as to realize high-voltage series and parallel connection of the battery cells, thereby realizing flexible connection mode with the battery cells, multiple series and multiple parallel, wide applicability, and battery temperature sampling and battery cell voltage sampling functions, and providing temperature and voltage to the battery acquisition module system through the low-voltage connector component in the signal acquisition component 3.

[0032] Beneficial effects of the device of this embodiment:

[0033] By utilizing the limited structural space of the battery box, the battery cell status monitoring and balancing control, temperature management, safety protection and other functions can be realized, and the production line efficiency can be improved. The overall space utilization of the battery pack box is improved, and the energy density of the battery pack is improved.

[0034] It has a high degree of integration and eliminates the need for an integrated cover plastic tray. It uses a hot-pressed PET film process to combine the current-carrying aluminum bar and the FPC collection into one piece through hot pressing. It uses more stringent electrical safety standards to ensure the safety and reliability of the battery module 1.

[0035] The product sub-components have strong commonality and manufacturability, and are easy to modularize and standardize, saving mold development costs and product development cycles.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An IBB integrated busbar device for a battery module, characterized in that: include: Battery module (1); A membrane layer component (2) is arranged at the end of a battery module, and a signal acquisition component (3) and a current carrying component (4) are arranged between the membrane layer components. The signal acquisition component cooperates with the current carrying component to collect information from and fix the battery cells in the battery module.

2. According to claim 1, an IBB integrated busbar device for a battery module is characterized in that: The film layer assembly comprises an upper hot-pressed film (21) and a lower hot-pressed film (22).

3. An IBB integrated busbar device for a battery module according to claim 2, characterized in that: The signal acquisition component and the current-carrying component are sequentially arranged between the upper hot-pressing film and the lower hot-pressing film.

4. An IBB integrated busbar device for a battery module according to claim 3, characterized in that: The upper hot-pressed film and the lower hot-pressed film are made of PET film material and have a structure that is integrated into an integral shape by heat compression.

5. The IBB integrated busbar device for a battery module according to claim 3, characterized in that: The signal acquisition component and the current-carrying component are integrated into an integrated structure through a six-point circle laser welding process.

6. An IBB integrated busbar device for a battery module according to claim 5, characterized in that: The signal acquisition component is made of FPC flexible circuit material.

7. An IBB integrated busbar device for a battery module according to claim 5, characterized in that: The current-carrying component adopts 1 series O-state aluminum bar material.

8. An IBB integrated busbar device for a battery module according to claim 7, characterized in that: The current-carrying component forms a series-parallel connection mode for a plurality of battery cells in the battery module by laser welding.

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