Integrated cell module data acquisition mechanism

Abstract

The utility model relates to the technical field of battery packs, in particular to an integrated battery cell module data acquisition mechanism which comprises an upper cover and a box body with a battery cell module mounting cavity, the upper cover and the box body are matched with each other, and the battery cell module mounting cavity comprises a mounting cavity front inner wall and a mounting cavity rear inner wall which are symmetrical to each other. A battery cell module front end plate is arranged on the inner side of the front inner wall of the mounting cavity, a battery cell module rear end plate is arranged on the inner side of the rear inner wall of the mounting cavity, and a battery cell module upper fixing plate is arranged at the tops of the battery cell module front end plate and the battery cell module rear end plate; the battery cell module upper fixing plate is provided with a BMS slave plate mounting position, and the BMS slave plate is fixed at the BMS slave plate mounting position; the upper cover comprises a concave BMS slave plate sleeve cavity, and the BMS slave plate sleeve cavity can sleeve the BMS slave plate. The structure is simple, occupies a small space of a battery pack, can ensure compact installation of each component, can ensure independent work between the battery module and the BMS slave plate, avoids mutual influence, and can effectively prolong the service life of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to an integrated battery cell module data acquisition mechanism. Background Technique

[0002] Currently, new energy vehicles have received extensive attention from all sectors of society due to their excellent environmental protection performance, and the requirements for new energy vehicles are also constantly increasing. As a type of new energy vehicle, electric vehicles are also constantly developing in the direction of high safety, high energy ratio, and lightweight. The main factor determining the driving range of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet the driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery cell modules, that is, multiple battery cell modules are stacked in the same box and then connected. As the core, the battery cell module generally configures the corresponding number of battery cells according to the magnitude of the voltage to be output, and then connects all the battery cells to output the voltage.

[0004] The BMS (Battery Management System) in the battery pack is the core to ensure the safe, efficient, and reliable operation of the battery pack. The main functions of the BMS include battery state monitoring, battery equalization management, battery protection, energy management, communication and information management, etc. It ensures the safe and efficient operation of the battery system through the joint cooperation of the BMS main board and the BMS slave board.

[0005] Among them, the BMS main board is also called BCU (Battery Control Unit), which is the core of the entire battery management system. Its main functions include:

[0006] Information collection and processing: The BMS main board collects sampling information from each slave board (BMU, Battery Management Unit), and these information include key parameters such as the voltage and temperature of single battery cells. Through complex algorithms, these information are processed to understand the overall state of the battery pack in real time.

[0007] Communication and control: The BMS main board communicates with the whole vehicle through a low-voltage electrical interface, controls the relay action in the BDU (Battery Disconnect Unit), and realizes the charge and discharge control of the battery pack. At the same time, the BMS main board is also responsible for exchanging information with other vehicle-mounted controllers (such as VCU, Vehicle Control Unit) to ensure the coordinated operation of the battery system and the whole vehicle.

[0008] Status monitoring and protection: The BMS main board monitors the various states of the battery pack in real time, including voltage, current, temperature, etc., to prevent abnormal situations such as overcharging, over-discharging, and short circuit of the battery. Once an abnormality is found, the main board will immediately take protection measures, such as cutting off the power supply, issuing an alarm, etc., to ensure the safety of the battery pack and the whole vehicle.

[0009] Energy management: The BMS main board is also responsible for the energy management of the battery pack, including charge and discharge control, balancing management, etc. By precisely controlling the charge and discharge process of the battery, the BMS main board can maximize the utilization efficiency and service life of the battery.

[0010] The BMS slave board is an important part of the battery management system. Its main functions include:

[0011] Monitoring of individual cells: The slave board is responsible for monitoring parameters such as the voltage and temperature of individual cells, and transmitting this information to the BMS main board in real time. This information is the basis for the BMS main board to make status judgments and protections.

[0012] Balancing control: The BMS slave board also has the function of battery balancing. In a battery pack, due to performance differences between individual cells, voltage inconsistencies may occur. Through balancing control, the BMS slave board can adjust the voltage difference between individual cells to make the overall performance of the battery pack more stable.

[0013] Information transmission: As a bridge between the main board and individual cells, the BMS slave board is responsible for accurately and timely transmitting the information of individual cells to the BMS main board; at the same time, the BMS slave board is also responsible for receiving control instructions from the BMS main board and performing corresponding operations.

[0014] In summary, as the direct data acquisition component of the battery cell module, in order to facilitate the direct acquisition of data of the battery cell module, the BMS slave board is mostly installed inside the battery pack, such as on the surface of the battery cell module. During the operation of the battery cell module, a large amount of heat is often generated, and even the deformation of the battery cells may occur, which is extremely likely to cause high-temperature damage or deformation and breakage of the BNS slave board on its surface, thereby affecting the normal operation of the BMS module and further affecting the use safety of the vehicle.

[0015] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. Summary of the Utility Model

[0016] The purpose of the present utility model is to overcome the problems of the above-mentioned existing technologies, and provides an integrated battery cell module data acquisition mechanism, which is used to solve the technical problems that in the traditional technology, directly attaching the BMS slave board to the battery cell module easily causes high-temperature damage to the BNS slave board due to high temperature or deformation of the battery cell module and breakage of the BNS slave board caused by the deformation of the battery cell module.

[0017] The above purpose is achieved through the following technical solutions:

[0018] An integrated battery cell module data acquisition mechanism includes a matching upper cover and a box body with a battery cell module installation cavity. The battery cell module installation cavity includes symmetric installation cavity front inner walls and installation cavity rear inner walls. A battery cell module front end plate is arranged inside the installation cavity front inner wall, and a battery cell module rear end plate is arranged inside the installation cavity rear inner wall. A battery cell module upper fixing plate is arranged at the top of the battery cell module front end plate and the battery cell module rear end plate. A BMS slave board installation position is arranged on the battery cell module upper fixing plate, and the BMS slave board is fixed to the BMS slave board installation position. The upper cover includes a concave BMS slave board sleeve cavity, and the BMS slave board sleeve cavity can sleeve the BMS slave board.

[0019] Further, a BMS slave board protective cover is arranged at the top of the BMS slave board.

[0020] Further, the BMS slave board protective cover includes a protective cover body that can protect the top of the BMS slave board, and a protective cover flanging arranged on the side of the protective cover body.

[0021] Further, a plurality of nut posts corresponding to the fixing hole positions of the BMS slave board are welded on the BMS slave board installation position.

[0022] Further, a concave screw hiding groove corresponding to the position of the nut post is arranged on the BMS slave board protective cover, and a screw hole is arranged in the screw hiding groove. After the screw passes through the screw hole, it is screwed with the nut post.

[0023] Further, a thermal conductive structural adhesive coating is arranged between the battery cell module and the battery cell module upper fixing plate.

[0024] Further, the battery cell module upper fixing plate is a corrugated plate, including a wave crest part and a wave trough part connected to each other.

[0025] Further, the BMS slave board installation position includes 2 wave crest parts and 1 wave trough part.

[0026] Further, the battery cell module front end plate and the battery cell module rear end plate have the same height, and the heights of the battery cell module front end plate and the battery cell module rear end plate are not less than the height of the battery cell module.

[0027] Further, the battery cell module front end plate and the battery cell module rear end plate are both hollow plates.

[0028] Beneficial effects

[0029] An integrated battery cell module data acquisition mechanism provided by the utility model installs the BMS slave board by setting a fixing plate on the top of the battery module and setting a BMS slave board installation position with nut studs on the fixing plate of the battery cell module, and forms an independent BMS slave board chamber after the upper cover and the box body are buckled by setting a BMS slave board sleeve cavity on the upper cover. This structure is not only simple in structure and small in the space occupied by the battery pack, but also can ensure the compact installation of each component, and can ensure the independent operation between the battery module and the BMS slave board, avoiding the mutual influence, and can effectively improve the service life of the battery pack. Description of the Drawings

[0030] Figure 1 It is a cross-sectional view of the structure of an integrated battery cell module data acquisition mechanism described in the utility model;

[0031] Figure 2 It is a schematic diagram of the structure of an integrated battery cell module data acquisition mechanism described in the utility model;

[0032] Figure 3 It is an exploded view of an integrated battery cell module data acquisition mechanism described in the utility model;

[0033] Figure 4 It is a schematic diagram of an integrated battery cell module data acquisition mechanism described in the utility model applied to a battery pack.

[0034] Markings in the drawings:

[0035] 1 - Upper cover, 101 - BMS slave board sleeve cavity;

[0036] 2 - Box body, 201 - Battery cell module installation cavity;

[0037] 3 - Front end plate of the battery cell module;

[0038] 4 - Rear end plate of the battery cell module;

[0039] 5 - Fixing plate on the top of the battery cell module, 501 - BMS slave board installation position, 502 - Nut stud, 503 - Crest part, 504 - Trough part;

[0040] 6 - BMS slave board protective cover, 601 - Protective cover body, 602 - Protective cover flange, 603 - Screw hiding groove, 604 - Screw hole;

[0041] 7 - BMS slave board, 701 - Fixing hole;

[0042] 8 - Battery cell module, 801 - Battery cell;

[0043] 9 - Thermal conductive structural adhesive coating. Detailed implementation manners

[0044] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0045] As Figure 1 、 Figure 2 and Figure 4 shown, the present solution provides an integrated battery cell module data acquisition mechanism, including a matching upper cover 1 and a box body 2 with a battery cell module installation cavity 201. The battery cell module installation cavity 201 includes symmetric installation cavity front inner walls and installation cavity rear inner walls. Inside the inner side of the installation cavity front inner wall, there is a battery cell module front end plate 3. Inside the inner side of the installation cavity rear inner wall, there is a battery cell module rear end plate 4. On the top of the battery cell module front end plate 3 and the battery cell module rear end plate 4, there is a battery cell module upper fixing plate 5;

[0046] On the battery cell module upper fixing plate 5, there is a BMS slave board installation position 501, and the BMS slave board 7 is fixed to the BMS slave board installation position 501;

[0047] The upper cover 1 includes a concave BMS slave board sleeve cavity 101, and the BMS slave board sleeve cavity 101 can sleeve the BMS slave board 7.

[0048] Specifically, in this embodiment, by respectively arranging the battery cell module front end plate 3 and the battery cell module rear end plate 4 on the installation cavity front inner wall and the installation cavity rear inner wall of the battery cell module installation cavity 201, not only can the battery cell module 8 installed in the battery cell module installation cavity 201 be longitudinally pressed and limited, that is, to ensure that the battery cells 801 constituting the battery cell module 8 are pressed against each other; but also it can support both ends of the battery cell module upper fixing plate 5 for installing the BMS slave board 7.

[0049] In addition, the battery cell module upper fixing plate 5 can also limit the top of the battery cell module 8.

[0050] After the upper cover 1 and the box body 2 are buckled with each other, the BMS slave board sleeve cavity 101 on the upper cover 1 forms an independent chamber for the BMS slave board 7 and the BMS slave board installation position 501 area, thereby ensuring the relative isolation between the BMS slave board 7 and the battery cell module 8, and they are not affected when working with each other.

[0051] It should be noted that the height of the front end plate 3 of the battery cell module is the same as that of the rear end plate 4 of the battery cell module, and the height of both the front end plate 3 and the rear end plate 4 of the battery cell module is not less than the height of the battery cell module 8. Both the front end plate 3 and the rear end plate 4 of the battery cell module are hollow plates, which not only reduces the weight of the battery pack, but also allows wiring in the hollow cavity.

[0052] The upper fixing plate 5 of the battery cell module is a corrugated plate, including a wave crest portion 503 and a wave trough portion 504 connected to each other. In this embodiment, the corrugated plate structure is adopted, which has the advantages of light weight and high strength, and can firmly support the top of the battery cell module 8.

[0053] The BMS slave board mounting position 501 includes 2 wave crest portions 503 and 1 wave trough portion 504. In this structure, when the BMS slave board 7 is installed, a heat dissipation channel will be formed between the wave trough portion 504 and the bottom of the BMS slave board 7, which is beneficial to the working heat dissipation of the BMS slave board 7.

[0054] As an optimization of this embodiment, a BMS slave board protective cover 6 is provided on the top of the BMS slave board 7. Through this BMS slave board protective cover 6, the top and side of the BMS slave board 7 can be effectively protected. Especially when the upper cover is impacted, through the protection of this BMS slave board protective cover 6, the BMS slave board 7 can be protected from damage.

[0055] The BMS slave board protective cover 6 includes a protective cover body 601 that can protect the top of the BMS slave board 7, and a protective cover flange 602 provided on the side of the protective cover body 601.

[0056] Specifically, in this embodiment, the shape of the BMS slave board protective cover 6 is the same as that of the BMS slave board 7, so as to cover the BMS slave board 7 installed in the BMS slave board mounting position 501 to form protection.

[0057] This protective cover can be made of metal materials such as stainless steel or aluminum; it can also be made of insulating materials with a certain hardness, such as hard rubber, etc.

[0058] As Figure 3 shown, a number of nut studs 502 corresponding to the fixing holes 801 of the BMS slave board 7 are welded on the BMS slave board mounting position 501. The BMS slave board 7 is quickly assembled on the BMS board mounting position 501 through the socket connection of the fixing holes 701 and the nut studs 502.

[0059] As Figure 2As shown, a concave screw hiding groove 603 corresponding to the position of the nut post 502 is provided on the BMS slave board protection cover 6, and a screw hole 604 is provided in the screw hiding groove 603. After passing through the screw hole 604, the screw is screwed with the nut post 502, so as to limit the BMS slave board 7 to the BMS slave board installation position 501.

[0060] Through this screw hiding groove 603, the nut of the screw used for screwing can be hidden, so that after the screwing is completed, its height does not exceed the protection cover body 601, and thus it will not interfere with the installation of the upper cover 1; in particular, it can ensure that after the upper cover 1 is buckled with the box body 2, the top wall of the BMS slave board sleeve cavity 101 can directly act on the surface of the protection cover body 601 to form further crimping, further ensuring the firmness of the BMS slave board 7 after installation.

[0061] As Figure 3 shown, a thermal conductive structural adhesive coating 9 is provided between the battery cell module 8 and the upper fixing plate 5 of the battery cell module. The thickness of the thermal conductive structural adhesive coating 9 is about 1 mm, which can not only fill the gap between the upper fixing plate 5 of the battery cell module and the battery cell module 8, but also has multiple functions such as improving the heat transfer efficiency, protecting the battery pack, improving the sealing performance of the battery pack, and improving the durability of the battery pack.

[0062] The above is only to illustrate the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated battery module data acquisition mechanism, comprising a matching upper cover (1) and a box (2) with a battery module installation cavity (201), characterized in that: The cell module installation cavity (201) comprises a front inner wall and a rear inner wall of the installation cavity which are symmetrical to each other, a cell module front end plate (3) is arranged on the inner side of the front inner wall of the installation cavity, a cell module rear end plate (4) is arranged on the inner side of the rear inner wall of the installation cavity, and a cell module upper fixing plate (5) is arranged on the top of the cell module front end plate (3) and the cell module rear end plate (4); A BMS slave board mounting position (501) is provided on the upper fixing plate (5) of the battery module, and a BMS slave board (7) is fixed to the BMS slave board mounting position (501); The upper cover (1) comprises an inwardly concave BMS slave board casing cavity (101), and the BMS slave board casing cavity (101) can be sleeved on the BMS slave board (7).

2. The integrated battery module data acquisition mechanism according to claim 1, characterized in that: A BMS slave board protection cover (6) is provided on the top of the BMS slave board (7).

3. The integrated battery module data acquisition mechanism according to claim 2, characterized in that: The BMS slave board protection cover (6) comprises a protection cover body (601) capable of protecting the top of the BMS slave board (7), and a protection cover flange (602) arranged on the side of the protection cover body (601).

4. The integrated battery module data acquisition mechanism according to claim 1, characterized in that: A plurality of nut columns (502) corresponding to the positions of the fixing holes (801) of the BMS slave plate (7) are welded on the BMS slave plate mounting position (501).

5. The integrated battery module data acquisition mechanism according to claim 4, characterized in that: The BMS slave plate protection cover (6) is provided with a concave screw hidden groove (603) corresponding to the position of the nut column (502), and a screw hole (604) is opened in the screw hidden groove (603). The screw is screwed to the nut column (502) after passing through the screw hole (604).

6. The integrated battery module data acquisition mechanism according to claim 1, characterized in that: A heat-conducting structural adhesive coating (9) is provided between the battery core module (8) and the upper fixing plate (5) of the battery core module.

7. An integrated battery module data acquisition mechanism according to claim 1 or 6, characterized in that: The upper fixing plate (5) of the battery core module is a profiled plate, comprising a wave crest portion (503) and a wave trough portion (504) connected to each other.

8. The integrated battery module data acquisition mechanism according to claim 7, characterized in that: The BMS slave board mounting position (501) includes two wave crests (503) and one wave trough (504).

9. The integrated battery module data acquisition mechanism according to claim 1, characterized in that: The front end plate (3) of the battery cell module and the rear end plate (4) of the battery cell module are of the same height, and the height of the front end plate (3) of the battery cell module and the rear end plate (4) of the battery cell module are not less than the height of the battery cell module (8).

10. The integrated battery module data acquisition mechanism according to claim 9, characterized in that: The battery cell module front end plate (3) and the battery cell module rear end plate (4) are both hollow plates.

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