Electrical connection structure

Abstract

The invention relates to an electrical connection structure (10) comprising a flexible film (1) and at least one electrical guide rail (2), the at least one electrical guide rail (2) being mounted in a protruding manner on a surface of the flexible film (1), preferably being printed directly on the respective surface with an electrically conductive metal by means of a direct printing process, the flexible film (1) is not provided with a coating and / or a cover. The invention further relates to a method for producing an electrical connection structure (10).

Description

[0001] Specification:

[0002] The present invention relates to an electrical connection structure, comprising a flexible film and at least one electrical guide rail or contact surface. The present invention also relates to a method for manufacturing an electrical connection structure.

[0003] In the prior art, bus bars and flexible printed circuit boards (flexible printed circuits) are usually fixed between two films by means of lamination. However, providing the corresponding electrical guide rails and using two films for lamination is very complex and time-consuming.

[0004] Therefore, the task of the present invention is to provide an improved electrical connection structure and an optimized manufacturing method for an electrical connection structure.

[0005] This task is solved by the combination of features described in claim 1 of the patent.

[0006] According to the present invention, an electrical connection structure is proposed, comprising a flexible film and at least one electrical guide rail. Here, at least one electrical guide rail is mounted on the surface of the flexible film in a protruding manner, preferably directly printed on the film surface with a conductive metal by means of a direct printing process. In addition, the film has no coating and / or covering in the non-printed surface area.

[0007] This is advantageous in that the electrical guide rail can be directly printed on the flexible film without having to be arranged and aligned between two films. Here, the electrical guide rail is printed on the flexible film according to a predetermined topology or a predetermined route. Therefore, the electrical connection structure is optimally adjusted or designed according to the intended application. For example, this can also reduce the manufacturing cost and the amount of material used. In addition, the usual flexible printed circuit board (flexible printed circuit) can be dispensed with.

[0008] In a preferred embodiment variant, it is provided that the film has a plurality of equally spaced conveying openings on at least one side edge for engaging with a conveying tool and / or for engaging with an opening of a contact bus bar. Therefore, the electrical connection structure can be automatically produced on a production line, or automatically conveyed to a corresponding production device, and conveyed to a further processing and / or storage location by a conveying tool after being processed. Current connectors, such as bus bars or current collectors, which are connected to the printed conductor structure, can be arranged in the openings of the contact bus bar. The printed guide rail is used here to monitor and connect corresponding sensors in order to communicate with a battery management system (BMS). In addition, batteries, in particular cylindrical, prismatic and / or pouch batteries, are also constructed in these openings of the contact bus bar.

[0009] In an advantageous embodiment of the present invention, another flexible film is also provided, and the electrical guide rail is fixed between the two flexible films especially by lamination.

[0010] In an implementation variant, the electrical connection structure according to the present invention is constructed in such a way that at least one fuse part is provided, and the fuse part is a fusible guide rail. Here, the corresponding fuse part is integrated into the guide rail as a so-called "fusible link". In this way, especially during the manufacturing process of the electrical connection structure, the fuse part can be integrated into the electrical guide rail without additional components.

[0011] Furthermore, the following implementation is advantageous, in which at least one temperature sensor is provided. Here, the temperature sensor is particularly an NTC sensor and / or an NTC resistor and / or a thermistor.

[0012] According to another advantageous variant of the present invention, the connecting element is connected to the electrical guide rail by means of a wire connection. Thereby, the electrical guide rail or the connection structure is connected to, for example, a power supply line, a further line or an electrical device.

[0013] In an implementation variant of the electrical connection structure according to the present invention, the thin film is made of plastic, particularly made of PE (polyethylene) plastic. Furthermore, the following implementation is advantageous, in which the electrical guide rail is made of copper and / or silver and / or copper alloy and / or silver alloy. These materials are particularly suitable for the thin film or the guide rail.

[0014] According to the present invention, a manufacturing method of an electrical connection structure according to the above disclosure is also proposed, in which a flexible thin film is first provided. Subsequently, at least one electrical guide rail is printed on the flexible thin film by a printing device. Here, optionally, the thin film is guided along a predetermined pattern relative to a fixedly positioned printing head, or the printing head is guided along a predetermined pattern relative to the fixedly positioned thin film, or the printing head moves synchronously during the transportation of the thin film along the processing direction. Furthermore, at least one electrical guide rail is printed on the flexible thin film, particularly printed according to a predetermined topology.

[0015] It is advantageous to do so that the electrical guide rail is directly printed on the flexible thin film. Here, the electrical guide rail is printed on the flexible thin film according to a predetermined topology or a predetermined route. Therefore, the electrical connection structure is optimally adjusted or designed according to the expected application. For example, this can also reduce the manufacturing cost and the material consumption.

[0016] In an advantageous implementation variant, the printing device prints at least one electrical guide rail from the liquid phase of the metal to be printed by means of screen printing, flexographic printing, gravure printing or inkjet printing, etc. In an embodiment of the present invention, it is stipulated that after printing, another flexible thin film is provided, and then the another flexible thin film is laminated to the first flexible thin film by a laminating device, so that at least one electrical guide rail is laminated between the two flexible thin films. Here, the electrical guide rail is printed on one side of the flexible thin film, and at least one conductor is arranged on the flexible thin film.

[0017] The above-disclosed features can be combined as needed, provided that they are technically feasible and not mutually contradictory.

[0018] Other advantageous further aspects of the invention are described in the dependent claims or are explained in detail below in connection with the description of the preferred embodiments of the invention with reference to the drawings. Among them:

[0019] Figure 1 An electrical connection structure is shown, which consists of a flexible film and at least one electrical guide rail.

[0020] The drawings are schematic examples. The same reference numerals in the figures denote the same functional and / or structural features.

[0021] Figure 1 An electrical connection structure 10 is shown, which consists of a flexible film 1 and at least one electrical guide rail 2. The film 1 is made of plastic, especially PE plastic, and the electrical guide rail 2 is made of copper and / or silver. At least one electrical guide rail 2 is mounted on the surface of the flexible film in a protruding manner. In particular, the electrical guide rail 2 is directly printed onto the corresponding surface by a direct printing process using a conductive metal. In addition, the film has no coating and / or covering in the non-printed surface area. In addition, a fuse part 3 is provided, which is a fusible guide rail. A temperature sensor 4 is also provided, which is an NTC sensor.

[0022] The electrical connection structure 10 includes connecting elements 5, which are connected to the electrical guide rail 2 in a wire-connected manner. In addition, the film 1 has a plurality of equally spaced conveying openings 11 along the longitudinal direction of the film 1 at both side edges for engaging with a conveying tool.

[0023] The invention in its embodiments is not limited to the above-described preferred embodiments. On the contrary, many variations can be envisaged, and the solutions shown can be used even in substantially different types of embodiments.

Claims

1. An electrical connection structure (10) comprising a flexible film (1) and at least one electrical rail (2), wherein, The at least one electrical rail (2) is mounted on the surface of the flexible film (1) in a protruding manner, preferably printed directly on the corresponding surface with a conductive metal by means of a direct printing process, wherein in the non-printed surface area, the flexible film (1) is not provided with a coating and / or covering.

2. The electrical connection structure (10) according to claim 1, wherein, The film (1) has a plurality of equally spaced conveying openings (11) on at least one side edge for engaging with a conveying tool and / or for engaging with an opening (12) of a contact busbar.

3. The electrical connection structure (10) according to claim 1 or 2, wherein another flexible thin film (1) is provided, wherein, The electrical rail (2) is fixed between two flexible films, in particular by lamination.

4. The electrical connection structure (10) according to any one of claims 1 to 3, wherein at least one fuse portion (3) is provided, wherein, The fuse part (3) is a fusible rail.

5. The electrical connection structure (10) according to any one of claims 1 to 4, wherein at least one temperature sensor (4) is provided, wherein, The temperature sensor (4) is in particular an NTC sensor and / or an NTC resistor and / or a thermistor.

6. The electrical connection structure (10) according to any one of the preceding claims, wherein, The connecting element (5) is connected to the electrical rail (2) by means of wire connection.

7. The electrical connection structure (10) according to any one of the preceding claims, wherein, The film is made of plastic, in particular PE plastic.

8. The electrical connection structure (10) according to any one of the preceding claims, wherein, The electrical rail (2) is made of copper and / or silver and / or a copper alloy and / or a silver alloy.

9. A method for manufacturing an electrical connection structure (10) according to any one of the preceding claims 1 to 8, comprising the following steps: a. Providing a flexible film (1); b. Printing at least one electrical rail (2) on the flexible film (1) by means of a printing device, wherein optionally, the film is guided along a predetermined pattern relative to a fixedly positioned printing head, or the printing head is guided along a predetermined pattern relative to a fixedly positioned film, or the printing head moves synchronously during the conveyance of the film in the processing direction.

10. The manufacturing method according to claim 9, wherein, The printing device prints the at least one electrical rail (2) from a liquid phase of a metal to be printed by means of screen printing, flexographic printing, gravure printing or inkjet printing.

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