Battery data acquisition module

Abstract

The utility model discloses a kind of battery data acquisition module, comprising: for detecting battery module data data acquisition module, including with nickel sheet terminal welded aluminium bar;With nickel sheet terminal between welding adapter PCB board, the upper end of the adapter PCB board is welded with the solder pad of array distribution;Paste in the middle part of adapter PCB board NTC thermistor;Fuse is set in the upper end of adapter PCB board and is communicated with voltage acquisition circuit and plays the role of fuse), can solve space occupation contradiction: discrete acquisition terminal needs to be laid out twice on the limited aluminium bar surface, leading to redundant structure, causing aluminium bar surface structure complicated irregular;Processing complexity is high: voltage terminal welding is executed in succession, welding is carried out in temperature acquisition, wherein the overlap rate of secondary heating influence area reaches 40%, leading to the mechanical property of aluminium bar (such as hardness reduction, brittleness increase) decline, while increasing the subsequent quality inspection process problem.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery module technology, and in particular to a battery data acquisition module. Background Technology

[0002] In new energy battery modules, accurate acquisition of voltage and temperature parameters is the core foundation for the Battery Management System (BMS) to achieve safety monitoring. Traditional solutions employ a split acquisition structure: voltage acquisition is achieved by soldering nickel-plated terminals to the surface of a series-connected aluminum bus, while temperature acquisition also requires separate soldering to the aluminum bus. This design has certain shortcomings:

[0003] First, there is a space conflict: the separate acquisition terminals need to be laid out twice on the limited aluminum bar surface, resulting in structural redundancy and making the aluminum bar surface structure cumbersome and irregular.

[0004] Secondly, the processing is highly complex: voltage terminal welding needs to be performed first, followed by temperature acquisition welding. The overlap rate of the secondary heating affected area reaches 40%, which leads to a decrease in the mechanical properties of the aluminum bar (such as reduced hardness and increased brittleness), and also increases the subsequent quality inspection process. Utility Model Content

[0005] This invention provides a battery data acquisition module that can solve the problems mentioned in the background art.

[0006] This utility model provides a battery data acquisition module, including:

[0007] A data acquisition module for detecting battery module data, including nickel plate terminals welded to aluminum foil;

[0008] An adapter PCB board is soldered to a nickel plate terminal, and the upper end of the adapter PCB board is soldered with an array of pads.

[0009] An NTC thermistor mounted in the middle of the adapter PCB board;

[0010] A fuse located at the top of the adapter PCB board and connected to the voltage acquisition line, serving as a safety device;

[0011] A sealing thermally conductive UV adhesive is used to fill the gaps between the NTC thermistor and the nickel plate terminals to ensure a seal without gaps or air bubbles.

[0012] In a battery data acquisition module according to one embodiment of the present invention, the end of the nickel plate terminal is integrally formed with a positioning structure that is compatible with the aluminum plate.

[0013] In a battery data acquisition module according to one embodiment of the present invention, the positioning structure is a strip-shaped structure with a "U" shaped side profile.

[0014] In a battery data acquisition module according to one embodiment of the present invention, the positioning structure is a strip structure with an "O" shape in side cross-section.

[0015] In a battery data acquisition module according to one embodiment of the present invention, the number of solder pads is three sets, and the fuse in the middle set is connected to the voltage acquisition line.

[0016] In a battery data acquisition module according to one embodiment of the present invention, the other two sets of pads are connected to the temperature acquisition circuit through an NTC thermistor.

[0017] The technical solution provided in this application embodiment can include the following beneficial effects: This application designs a battery data acquisition module. First, the wires are directly soldered to the three corresponding pads on the adapter PCB board in the acquisition harness to complete the assembly of the acquisition harness. This reduces the cost and efficiency of multiple processing and assembly processes that require crimping the terminals twice in traditional operations. Second, when welding the module, only the nickel plate terminal with the positioning structure needs to be fixed in the fixing hole of the aluminum bar to perform the welding operation. Compared with the traditional solution, one nickel plate terminal is saved, which greatly reduces the material cost. Finally, the terminal can complete the acquisition of voltage and temperature modules with one welding operation. Compared with the traditional method, one assembly welding of the nickel plate terminal is reduced, which greatly saves welding costs and reduces the quality risks caused by multiple welding operations.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a battery data acquisition module provided in one embodiment of this application;

[0021] Figure 2 yes Figure 1 A partial split view of a battery data acquisition module;

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of a battery data acquisition module and an aluminum bar;

[0023] Figure 4 yes Figure 1A schematic diagram of a battery data acquisition module, an aluminum bus, and a wiring harness. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] like Figures 1 to 4 As shown, this application provides a battery data acquisition module, including: a data acquisition module 100 for detecting battery module data, including a nickel plate terminal 10 welded to an aluminum plate; a transition PCB board 20 welded to the nickel plate terminal 10, with an array of solder pads 30 welded to the upper end of the transition PCB board 20; an NTC thermistor 40 attached to the middle of the transition PCB board 20; a fuse 50 disposed on the upper end of the transition PCB board 20 and connected to the voltage acquisition line, serving as a safety device; and a sealing thermally conductive UV adhesive 60 filled between the NTC thermistor 40 and the nickel plate terminal 10 to ensure a seal without gaps or bubbles.

[0028] By adopting the above technical solution, through the setting of nickel plate terminals 10, pads 30, NTC thermistors 40 and fuses 50, the wires in the acquisition harness are directly soldered to the three corresponding pads 30 of the adapter PCB board 20, completing the assembly of the acquisition harness. This reduces the cost and efficiency of multiple processing and assembly processes that require crimping the terminals twice in traditional operations. Secondly, when welding the module, only the nickel plate terminals 10 with positioning structures need to be fixed in the fixing holes of the aluminum bar for welding operations, saving one nickel plate terminal 10 compared to the traditional solution, which greatly reduces material costs. Finally, the terminal can complete the acquisition of voltage and temperature modules with a single welding operation, which greatly saves welding costs and reduces the quality risks caused by multiple welding operations compared to the traditional method of assembling and welding one nickel plate terminal 10.

[0029] It should be noted that during the assembly of the acquisition module, the nickel plate terminal 10 is attached to the upper end of the adapter PCB board 20 and connected to the voltage acquisition line in the middle of the three pads 30. Then, the fuse 50 is attached to the middle of the voltage acquisition line on the adapter PCB board 20 to act as a fuse. Next, the NTC thermistor 40 is attached to the adapter PCB board 20, and the two lines of the NTC thermistor 40 are connected to the two pads 30 on both sides of the three pads 30, thereby connecting the temperature acquisition line. Finally, the sealing thermal conductive UV adhesive 60 is applied to the upper end of the attached NTC thermistor 40 and the nickel plate terminal 10 to ensure a complete seal without gaps or air bubbles, thereby completing the battery data (voltage and temperature) acquisition operation.

[0030] It should be noted that the voltage acquisition signal is collected from the battery series-parallel aluminum bar through the nickel plate terminal 10 and then transmitted to the fuse 50 through the adapter PCB board 20. Under reliable current conditions, it is then transmitted to the voltage acquisition line of the three nickel plate terminals 10.

[0031] Temperature acquisition is achieved by collecting battery heat from the series-parallel aluminum battery via nickel plate terminal 10 and conducting it to the sealing thermally conductive UV adhesive 60, and then to the NTC thermistor 40. The NTC thermistor 40 then converts the heat into a resistance value, which is conducted through the circuit on the adapter PCB board 20 to the temperature acquisition harness of the three solder pads 30. Thus, the voltage and temperature acquisition of the battery module are completed through this acquisition module.

[0032] In a preferred and feasible embodiment, the end of the nickel terminal 10 is integrally formed with a positioning structure that is compatible with the aluminum bar. By setting the positioning structure, when the nickel terminal 10 is installed and adapted to the aluminum bar, it can be engaged with the matching hole at the upper end of the aluminum bar through the positioning structure, thereby ensuring that the nickel terminal 10 will not shift in position when it is welded to the aluminum bar.

[0033] For example, in this implementation, since the positioning structure is a strip-shaped structure with a "U" shape in its side profile, during the engagement with the aluminum bar, the adapter hole at the upper end of the aluminum bar will change according to the change of the positioning structure, so that the two can engage. Due to the "U" shape, when connecting with the adapter hole, the rectangular surface at the bottom of the positioning structure is engaged into the adapter hole, ensuring the strength of the connection and ensuring stability when the nickel plate terminal 10 is subsequently welded to the aluminum bar.

[0034] Of course, in addition to the above embodiments, the positioning structure is a strip structure with an "O" shape in the side profile. With the "O" shape, during the connection between the nickel plate terminal 10 and the aluminum adapter slot, the bottom of the positioning structure is arc-shaped, which ensures smooth insertion into the adapter slot and prevents jamming. This eliminates the need for multiple insertions and removals, ensuring quick installation.

[0035] In a preferred and feasible embodiment, there are three sets of pads 30, and the middle set of fuses 50 is connected to the voltage acquisition line. Since there are three sets of pads 30, and the three sets of pads 30 are arranged sequentially along the upper end of the adapter PCB board 20, the width of the middle pad 30 is greater than the width of the pads 30 on both sides. The middle pad 30 can be better connected with the nickel plate terminal 10, ensuring that the voltage of the battery pack can be stably acquired when the nickel plate terminal 10 is in contact with the aluminum plate.

[0036] In a preferred and feasible embodiment, the other two sets of pads 30 are connected to the temperature acquisition line through an NTC thermistor 40. The other two sets of pads 30 refer to the pads 30 on both sides, which are not connected to the nickel plate terminal 10. Since the line in the middle of the two is connected through the NTC thermistor 40, the temperature can be acquired by the NTC thermistor 40 and then transmitted in time through the pads 30 on both sides, ensuring that the temperature data can be transmitted through the wiring harness.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery data acquisition module, characterized in that, include: A data acquisition module for detecting battery module data, including nickel plate terminals welded to aluminum foil; An adapter PCB board is soldered to a nickel plate terminal, and the upper end of the adapter PCB board is soldered with an array of solder pads. An NTC thermistor mounted in the middle of the adapter PCB board; A fuse located at the top of the adapter PCB board and connected to the voltage acquisition line, serving as a safety device; A sealing thermally conductive UV adhesive is used to fill the gaps between the NTC thermistor and the nickel plate terminals to ensure a seal without gaps or air bubbles.

2. The battery data acquisition module according to claim 1, characterized in that, The end of the nickel plate terminal is integrally formed with a positioning structure that is compatible with the aluminum bar.

3. The battery data acquisition module according to claim 2, characterized in that, The positioning structure is a strip-shaped structure with a "U" shape in its side cross-section.

4. A battery data acquisition module according to claim 2, characterized in that, The positioning structure is a strip-shaped column with an "O" shape in its side profile.

5. A battery data acquisition module according to claim 1, characterized in that, The number of solder pads is three sets, and the fuse in the middle set is connected to the voltage acquisition line.

6. A battery data acquisition module according to claim 1, characterized in that, The other two sets of pads are connected to the temperature acquisition circuit via an NTC thermistor.

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