Acquisition assembly and battery module

Abstract

The utility model discloses an acquisition assembly and a battery module, and belongs to the technical field of battery module detection. The acquisition assembly comprises a first acquisition FPC board and a second acquisition FPC board; a plurality of first acquisition lines and a plurality of first acquisition pins are respectively arranged on the first acquisition FPC board, one first acquisition line is electrically connected with one first acquisition pin, and the first acquisition pins are used for being connected to a voltage acquisition point and / or a temperature acquisition point on a battery module; the second acquisition FPC board is arranged below the first acquisition FPC board, a plurality of second acquisition lines and a plurality of second acquisition pins are respectively arranged on the second acquisition FPC board, one second acquisition line is electrically connected with one second acquisition pin, and the second acquisition pins are used for being connected to a voltage acquisition point and / or a temperature acquisition point on the battery module. According to the acquisition assembly, the battery module is acquired through the two acquisition FPC boards, so that the maintenance of the acquisition assembly and the battery module is relatively simple, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module detection, in particular to a collection component and a battery module. Background Art

[0002] After lithium batteries are used in groups, it is necessary to detect the temperature and voltage of the lithium batteries in real time, so as to control the charging and discharging of the lithium batteries according to the real-time temperature and voltage detected. Among them, in order to obtain high voltage and high capacity, several or dozens of lithium batteries are generally connected to form a battery module. Therefore, it is necessary to collect the temperature and voltage of multiple temperature collection points and multiple voltage collection points in the battery module respectively. Since there are many collection lines, the temperature collection lines and voltage collection lines are usually integrated on a collection FPC board (Flexible Printed Circuit). When the collection FPC board is damaged, only the whole collection FPC board can be replaced, and it is very difficult to repair, making the repair troublesome and costly.

[0003] In view of the above problems, there is an urgent need for a collection component and a battery module to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a collection component and a battery module, which use two collection FPC boards to collect data from the battery module, making the repair of the collection component and the battery module relatively simple and saving costs.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A collection component, comprising:

[0007] A first collection FPC board, on which there are multiple first collection lines, and multiple first collection pins are also arranged on the first collection FPC board. One of the first collection lines is electrically connected to one of the first collection pins, and the first collection pin is used to connect to a voltage collection point and / or a temperature collection point on the battery module;

[0008] A second collection FPC board is arranged below the first collection FPC board. Multiple second collection lines and multiple second collection pins are respectively arranged on the second collection FPC board. One of the second collection lines is electrically connected to one of the second collection pins, and the second collection pin is used to connect to the voltage collection point and / or the temperature collection point on the battery module.

[0009] As an optional solution, fuses are connected between the first collection pin connected to the voltage collection point and the first collection line, and between the second collection pin connected to the voltage collection point and the second collection line.

[0010] As an alternative, the distance between any two adjacent fuses on the first acquisition FPC board and the second acquisition FPC board is not less than a preset distance.

[0011] As an alternative, the first acquisition pin is used to connect to the voltage acquisition point on the battery module, and the second acquisition pin is used to connect to the temperature acquisition point on the battery module.

[0012] As an alternative, the first acquisition pin is used to connect to the voltage acquisition point and the temperature acquisition point on the battery module, and the second acquisition pin is used to connect to the voltage acquisition point on the battery module; or

[0013] The first acquisition pin is used to connect to the voltage acquisition point on the battery module, and the second acquisition pin is used to connect to the voltage acquisition point and the temperature acquisition point on the battery module.

[0014] As an alternative, a buffer is connected between the first acquisition FPC board and the second acquisition FPC board.

[0015] As an alternative, the buffer is respectively connected to the first acquisition FPC board and the second acquisition FPC board through an adhesive.

[0016] As an alternative, the acquisition component further includes:

[0017] A mounting plate, located below the second acquisition FPC board, and the first acquisition FPC board and the second acquisition FPC board are connected to the mounting plate through fasteners.

[0018] As an alternative, at least one first electrical connector is further provided on the first acquisition FPC board, and the first acquisition wire is electrically connected to the first electrical connector;

[0019] At least one second electrical connector is further provided on the second acquisition FPC board, and the second acquisition wire is electrically connected to the second electrical connector, and the second electrical connector is located on one side of the first electrical connector.

[0020] A battery module, including a busbar assembly, a bracket, and the acquisition component as described above, the busbar assembly and the acquisition component are respectively installed on the bracket, and a plurality of the temperature acquisition points and a plurality of the voltage acquisition points are respectively provided on the busbar assembly.

[0021] The beneficial effects of the present utility model are:

[0022] By respectively arranging a plurality of first collection lines and a plurality of first collection pins on a first collection FPC board, and electrically connecting one first collection line to one first collection pin, the first collection pin is used to connect to a voltage collection point and / or a temperature collection point on the battery module to collect the voltage and / or temperature of the battery module; at the same time, respectively arranging a plurality of second collection lines and a plurality of second collection pins on a second collection FPC board, and electrically connecting one second collection line to one second collection pin, the second collection pin is used to connect to the voltage collection point and / or the temperature collection point on the battery module to collect the voltage and / or temperature of the battery module; using the first collection FPC board and the second collection FPC board to collect the voltage and temperature of the battery module. When any one of the collection FPC boards is damaged, since there are fewer collection lines on a single collection FPC board, only one needs to be repaired, and the other collection FPC board can continue to be used, making the repair of a single collection FPC board relatively simple; since it is not necessary to directly replace the damaged collection FPC board, cost can be saved. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a battery module provided by the present utility model;

[0024] Figure 2 is an exploded structural schematic diagram of a collection component provided by the present utility model Figure 1 ;

[0025] Figure 3 is Figure 2 a partial enlarged structural schematic diagram of part A in

[0026] Figure 4 is an exploded structural schematic diagram of a collection component provided by the present utility model Figure 2 ;

[0027] Figure 5 is Figure 4 an assembled structural schematic diagram of the collection component in

[0028] Description of the Reference Numerals:

[0029] 10 - First collection FPC board; 11 - First collection pin; 12 - First electrical connector; 13 - Opening;

[0030] 20 - Second collection FPC board; 21 - Second collection pin; 22 - Second electrical connector;

[0031] 30 - Buffer; 40 - Mounting plate; 50 - Fuse; 60 - Busbar assembly; 70 - Bracket. Detailed Description of the Embodiment

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0033] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.

[0034] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

[0035] Currently, during the process of separately collecting temperature and voltage at multiple temperature collection points and multiple voltage collection points in a battery module, due to the large number of collection lines, the temperature collection lines and voltage collection lines are usually integrated on a single collection FPC board (Flexible Printed Circuit). When this collection FPC board is damaged, only the entire collection FPC board can be replaced, and it is very difficult to perform repairs, resulting in troublesome repairs and high costs.

[0036] For this reason, in this embodiment, a collection component and a battery module including this collection component are proposed, as Figure 1 shown. The battery module further includes a busbar component 60 and a bracket 70. The busbar component 60 and the collection component are respectively fixedly installed on the bracket 70. Multiple temperature collection points and multiple voltage collection points are respectively provided on the busbar component 60 to collect each temperature collection point and voltage collection point through the collection component, so as to be able to detect the temperature and voltage of the battery module in real time, facilitating the control of the charging and discharging of the battery module according to the real-time conditions of the detected temperature and voltage. In this embodiment, the battery module is specifically a lithium battery module.

[0037] Specifically, as Figures 2 to 5 shown, the collection component includes a first collection FPC board 10 and a second collection FPC board 20; among them, multiple first collection lines and multiple first collection pins 11 are respectively provided on the first collection FPC board 10. One first collection line is electrically connected to one first collection pin 11, and the first collection pin 11 is used to connect to the voltage collection point and / or temperature collection point on the battery module; the second collection FPC board 20 is arranged below the first collection FPC board 10. Multiple second collection lines and multiple second collection pins 21 are respectively provided on the second collection FPC board 20. One second collection line is electrically connected to one second collection pin 21, and the second collection pin 21 is used to connect to the voltage collection point and / or temperature collection point on the battery module.

[0038] Compared with the prior art, the acquisition component in this embodiment increases the number of acquisition FPC boards set, so as to reduce the number of acquisition lines integrated on a single acquisition FPC board; by respectively arranging a plurality of first acquisition lines and a plurality of first acquisition pins 11 on the first acquisition FPC board 10, and electrically connecting one first acquisition line to one first acquisition pin 11, the first acquisition pin 11 is used to connect to the voltage acquisition point and / or temperature acquisition point on the battery module to acquire the voltage and / or temperature of the battery module; at the same time, a plurality of second acquisition lines and a plurality of second acquisition pins 21 are respectively arranged on the second acquisition FPC board 20, and one second acquisition line is electrically connected to one second acquisition pin 21, and the second acquisition pin 21 is used to connect to the voltage acquisition point and / or temperature acquisition point on the battery module to acquire the voltage and / or temperature of the battery module; the first acquisition FPC board 10 and the second acquisition FPC board 20 are used to acquire the voltage and temperature of the battery module. When any one of the acquisition FPC boards is damaged, since there are fewer acquisition lines on a single acquisition FPC board, only one needs to be repaired, and the other acquisition FPC board can continue to be used, making the repair of a single acquisition FPC board relatively simple; since it is not necessary to directly replace the damaged acquisition FPC board, cost can be saved.

[0039] Further, fuses 50 are connected between the first acquisition pin 11 connected to the voltage acquisition point and the first acquisition line, and between the second acquisition pin 21 connected to the voltage acquisition point and the second acquisition line, so that when the acquisition voltage is too large, the fuse 50 can be melted, ensuring the safety of the acquisition, not easily damaging the acquisition FPC board, and saving the cost of repairing or replacing the acquisition FPC board.

[0040] Specifically, the distance between adjacent two fuses 50 on the first acquisition FPC board 10 and the second acquisition FPC board 20 is not less than a preset distance, and the preset distance is the distance convenient for repairing the fuse 50, so as to make the repair of the fuse 50 more convenient. Here, the preset distance is not specifically limited, as long as the damaged fuse 50 can be repaired between adjacent two acquisition pins.

[0041] Specifically, when the acquisition voltage is too large and causes the fuse 50 to melt, since the setting position of the fuse 50 matches the preset distance, a larger repair space can be provided for the fuse 50, facilitating the repair of the melted fuse 50. During the repair, the disconnected part of the fuse 50 can be directly connected using a soldering iron, making the repair of the fuse 50 relatively simple and convenient, and further improving the convenience of repairing the acquisition component.

[0042] It should be noted that since there will be no problem of excessive voltage on the first acquisition pin 11 or the second acquisition pin 21 connected to the temperature acquisition point, in order to save costs, there is no need to connect a fuse 50 between the first acquisition pin 11 connected to the temperature acquisition point and the first acquisition line, and between the second acquisition pin 21 connected to the temperature acquisition point and the second acquisition line.

[0043] Specifically, each first acquisition pin 11 is used to connect to a voltage acquisition point on the battery module, and each second acquisition pin 21 is used to connect to a temperature acquisition point on the battery module. That is, the first acquisition FPC board 10 is used to acquire voltage, and the second acquisition FPC board 20 is used to acquire temperature; correspondingly, a fuse 50 is connected between each first acquisition pin 11 and each first acquisition line on the first acquisition FPC board 10, and the distance between adjacent two first acquisition pins 11 is not less than a preset distance.

[0044] By separating temperature acquisition and voltage acquisition, on the one hand, it is convenient for acquisition management, and on the other hand, it is convenient to uniformly set the distance between adjacent two first acquisition pins 11 to ensure the repair of the blown fuse 50 on the first acquisition FPC board 10.

[0045] When the number of voltage acquisition points in the battery module is much more than the number of temperature acquisition points, in order to reasonably utilize the available space on the first acquisition FPC board 10 and the second acquisition FPC board 20, as Figure 2 shown, each first acquisition pin 11 can also be used to connect to a voltage acquisition point and a temperature acquisition point on the battery module respectively, and at the same time each second acquisition pin 21 is used to connect to a voltage acquisition point on the battery module.

[0046] By integrating temperature acquisition and partial voltage acquisition on the first acquisition FPC board 10, and integrating the remaining voltage acquisition entirely on the second acquisition FPC board 20, it can not only make full use of the available space on the first acquisition FPC board 10 and the second acquisition FPC board 20, but also fully ensure the convenience of repairing the blown fuse 50.

[0047] In other embodiments, the first acquisition pin 11 can also be used to connect to a voltage acquisition point on the battery module, and the second acquisition pin 21 can be used to connect to a voltage acquisition point and a temperature acquisition point on the battery module. For the specific acquisition allocation method, no specific limitation is made here, as long as the acquisition of each voltage acquisition point and each temperature acquisition point of the battery module can be ensured.

[0048] Since the first acquisition FPC board is a flexible printed circuit board made of polyimide or polyester film as the substrate, which has high reliability and excellent performance; when the battery module is in use, especially when the battery module is used as a power battery in a vehicle, the vehicle will generate large vibrations or shakes during driving, which easily causes mutual damage between the first acquisition FPC board 10 and the second acquisition FPC board 20 due to the vibrations or shakes.

[0049] To solve the above problems, as Figure 2 and Figure 4 shown, a buffer member 30 is connected between the first acquisition FPC board 10 and the second acquisition FPC board 20, so as to provide a buffering effect through the buffer member 30, effectively absorbing the influence of vibrations or shakes on the two acquisition FPC boards, avoiding mutual damage between the first acquisition FPC board 10 and the second acquisition FPC board 20 due to vibrations or shakes, and being able to play a good protective role for the first acquisition FPC board 10 and the second acquisition FPC board 20. In this embodiment, the buffer member 30 may specifically be a foam.

[0050] Furthermore, the buffer member 30 is respectively connected to the first acquisition FPC board 10 and the second acquisition FPC board 20 through an adhesive, so as to realize the pre-connection between the first acquisition FPC board 10 and the second acquisition FPC board 20, and the connection method is simple and convenient with low cost. In this embodiment, the adhesive is a double-sided tape, and the double-sided tape is integrally arranged with the foam, that is, there is glue on both the front and back sides of the foam.

[0051] Specifically, as Figures 1 to 5 shown, the acquisition assembly further includes a mounting plate 40. The mounting plate 40 is located below the second acquisition FPC board 20. The first acquisition FPC board 10 and the second acquisition FPC board 20 are connected to the mounting plate 40 through fasteners, so that the first acquisition FPC board 10, the buffer member 30, the second acquisition FPC board 20 and the mounting plate 40 are connected to form an integral structure, and then the formed integral structure is directly fixed on the bracket 70 in the battery module, making the assembly efficiency of the battery module relatively high. In this embodiment, the fasteners may specifically be screws.

[0052] By setting the mounting plate 40, on the one hand, the structural strength and rigidity of the entire acquisition component can be increased through the mounting plate 40, which is beneficial to the fixed connection between the mounting plate 40 and other components, so that the entire acquisition component can be installed and fixed to other components; on the other hand, the mounting plate 40 can be installed on the bracket 70, so as to avoid directly installing the second acquisition FPC board 20 on the bracket 70, thus avoiding the burr structure on the bus bar assembly 60 from easily scratching the second acquisition FPC board 20 when the second acquisition FPC board 20 is in direct contact with the bus bar assembly 60, which may cause short circuit or open circuit of the second acquisition FPC board 20, so as to better protect the second acquisition FPC board 20 and improve the acquisition safety at the same time.

[0053] Furthermore, the mounting plate 40 is connected to the bottom end of the second acquisition FPC board 20 through an adhesive to achieve pre-connection between the mounting plate 40 and the second acquisition FPC board 20, and the connection method is simple and convenient; at the same time, the first acquisition FPC board 10 and the second acquisition FPC board 20 are pre-connected through an adhesive, so that the pre-fixed connection of the acquisition component can be realized through the adhesive and the glue, which is beneficial to the rapid connection and fixation of subsequent fasteners, so as to quickly connect the first acquisition FPC board 10, the buffer 30, the second acquisition FPC board 20 and the mounting plate 40 to form an integral structure, improving the assembly efficiency of the entire acquisition component, and further improving the installation efficiency of installing the acquisition component on the bracket 70.

[0054] Specifically, as Figures 2 to 5 shown, at least one first electrical connector 12 is further provided on the first acquisition FPC board 10, the first acquisition line is electrically connected to the first electrical connector 12, and a controller is also electrically connected to the first electrical connector 12, so as to analyze the signal collected on the first acquisition line through the controller; at the same time, at least one second electrical connector 22 is further provided on the second acquisition FPC board 20, the second acquisition line is electrically connected to the second electrical connector 22, and the second electrical connector 22 is also electrically connected to the above-mentioned controller, so as to analyze the signal collected on the second acquisition line through the controller. Among them, the controller is a common BMS (Battery Management System) control structure in the prior art, and its control principle will not be described in detail here.

[0055] In this embodiment, as Figure 5 shown, two first electrical connectors 12 and two second electrical connectors 22 are respectively provided. The two first electrical connectors 12 are respectively arranged at both ends of the first acquisition FPC board 10, and the two second electrical connectors 22 are respectively arranged at both ends of the second acquisition FPC board 20. Here, the number of the first electrical connectors 12 and the second electrical connectors 22 is not limited, and it needs to be determined according to the actual number of the first acquisition line and the second acquisition line.

[0056] Further, as Figure 4 and Figure 5 shown, the second electrical connector 22 is located on one side of the first electrical connector 12 so that there is no mutual interference between the first electrical connector 12 and the second electrical connector 22. Among them, an opening 13 is provided on the first acquisition FPC board 10, and the second electrical connector 22 is inserted into the opening 13 so that the second electrical connector 22 is arranged on one side of the first electrical connector 12. In other embodiments, the length of the second acquisition FPC board 20 can also be set longer than the length of the first acquisition FPC board 10 so that when the first acquisition FPC board 10 is stacked on the second acquisition FPC board 20, the second electrical connector 22 is located outside the first electrical connector 12. Here, the specific setting structure between the first electrical connector 12 and the second electrical connector 22 is not limited, as long as it is ensured that the second electrical connector 22 and the first electrical connector 12 do not interfere with each other. In this embodiment, both the first electrical connector 12 and the second electrical connector 22 are common electrical accessories in the prior art.

[0057] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present utility model.

Claims

1. Collection component, characterized in that, include: A first acquisition FPC board (10), on which a plurality of first acquisition lines are arranged, and the first acquisition FPC board (10) is also provided with a plurality of first acquisition pins (11), one of the first acquisition lines is electrically connected to one of the first acquisition pins (11), and the first acquisition pin (11) is used to connect to a voltage acquisition point and / or a temperature acquisition point on a battery module; The second acquisition FPC board (20) is arranged below the first acquisition FPC board (10), and the second acquisition FPC board (20) is respectively provided with a plurality of second acquisition lines and a plurality of second acquisition pins (21), one second acquisition line is electrically connected to one second acquisition pin (21), and the second acquisition pin (21) is used to connect to the voltage acquisition point and / or the temperature acquisition point on the battery module.

2. The collection component according to claim 1, characterized in that: Fuses (50) are connected between the first collection pin (11) connected to the voltage collection point and the first collection line, and between the second collection pin (21) connected to the voltage collection point and the second collection line.

3. The collection component according to claim 2, characterized in that: The distance between two adjacent fuses (50) on the first acquisition FPC board (10) and the second acquisition FPC board (20) is not less than a preset distance.

4. The collection component according to any one of claims 1 to 3, characterized in that: The first acquisition pin (11) is used to connect to the voltage acquisition point on the battery module, and the second acquisition pin (21) is used to connect to the temperature acquisition point on the battery module.

5. The collection component according to any one of claims 1 to 3, characterized in that: The first acquisition pin (11) is used to connect to the voltage acquisition point and the temperature acquisition point on the battery module, and the second acquisition pin (21) is used to connect to the voltage acquisition point on the battery module; or The first acquisition pin (11) is used to connect to the voltage acquisition point on the battery module, and the second acquisition pin (21) is used to connect to the voltage acquisition point and the temperature acquisition point on the battery module.

6. The collection component according to any one of claims 1 to 3, characterized in that: A buffer component (30) is connected between the first acquisition FPC board (10) and the second acquisition FPC board (20).

7. The collection component according to claim 6, characterized in that: The buffer member (30) is respectively connected to the first collection FPC board (10) and the second collection FPC board (20) by adhesive.

8. The collection component according to any one of claims 1 to 3, characterized in that: The acquisition component also includes: The mounting plate (40) is located below the second acquisition FPC board (20), and the first acquisition FPC board (10) and the second acquisition FPC board (20) are connected to the mounting plate (40) via fasteners.

9. The collection component according to any one of claims 1 to 3, characterized in that: The first acquisition FPC board (10) is also provided with at least one first electrical connector (12), and the first acquisition line is electrically connected to the first electrical connector (12); At least one second electrical connector (22) is also provided on the second acquisition FPC board (20), the second acquisition line is electrically connected to the second electrical connector (22), and the second electrical connector (22) is located on one side of the first electrical connector (12).

10. A battery module, characterized in that: It comprises a bus assembly (60), a bracket (70) and a collection assembly according to any one of claims 1 to 9, wherein the bus assembly (60) and the collection assembly are respectively mounted on the bracket (70), and the bus assembly (60) is respectively provided with a plurality of the temperature collection points and a plurality of the voltage collection points.

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