Integrated side cell module data acquisition mechanism

Abstract

The utility model relates to the technical field of battery packs, in particular to an integrated side cell module data acquisition mechanism, which comprises an upper cover and a box body with a mounting cavity, the upper cover and the box body are matched with each other, and the box body comprises side beam plates, a front beam plate and a rear beam plate, a battery cell module front end plate is arranged on the inner side of the front beam plate, and the battery cell module front end plate divides the mounting cavity into a battery cell module mounting cavity and a BMS slave plate mounting cavity; a battery cell module rear end plate is arranged on the inner side of the rear beam plate, and the battery cell module rear end plate and the battery cell module front end plate are used for clamping the two ends of the battery cell module; a BMS slave plate bracket capable of being connected with the inner wall of the battery cell module front end plate is arranged in the BMS slave plate mounting cavity, and a BMS slave plate is arranged on the BMS bracket. The mechanism not only is simple in structure and small in occupied space of the battery pack, but also can ensure compact installation of all parts, 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 side-position 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 continuously developing in the direction of high safety, high energy density, 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 balancing 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 the 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). This information includes key parameters such as the voltage and temperature of individual battery cells, and processes this information through complex algorithms to understand the overall state of the battery pack in real time.

[0007] Communication and control: The BMS main board communicates with the entire 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 the VCU, Vehicle Control Unit) to ensure the coordinated operation of the battery system and the entire 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-circuiting of the battery. Once an abnormality is detected, the main board will immediately take protective measures, such as cutting off the power supply and issuing an alarm, to ensure the safety of the battery pack and the entire vehicle.

[0009] Energy management: The BMS main board is also responsible for the energy management of the battery pack, including charge and discharge control, balance 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, there may be a situation of inconsistent voltages. 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 the 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, the BMS slave board is mostly installed inside the battery pack, such as on the surface of the battery cell module, in order to facilitate direct data acquisition 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, a new technical solution is urgently needed 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 side-mounted 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 the 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 side-mounted battery cell module data acquisition mechanism, comprising a matching upper cover and a box body with an installation cavity. The box body includes a frame body and a bottom plate connected to each other. The frame body is a rectangular frame body, including symmetrically arranged side beam plates, and front beam plates and rear beam plates provided at both ends of the two side beam plates. An end plate at the front end of the battery cell module is arranged inside the front beam plate, and the end plate at the front end of the battery cell module divides the installation cavity into a battery cell module installation cavity and a BMS slave board installation cavity. An end plate at the rear end of the battery cell module is arranged inside the rear beam plate, and the end plate at the rear end of the battery cell module and the end plate at the front end of the battery cell module are used to clamp both ends of the battery cell module. A BMS slave board bracket capable of being connected to the inner wall of the end plate at the front end of the battery cell module is arranged in the BMS slave board installation cavity, and a BMS slave board is arranged on the BMS bracket.

[0019] Further, the BMS slave board bracket is a right-angle bracket, and a plurality of nut columns are arranged on its vertical inner wall. A number of screw holes corresponding to the number of nut columns are arranged on the BMS slave board, and screws are screwed into the nut columns after passing through the screw holes.

[0020] Further, there are four nut columns, which respectively correspond to the four corners of the BMS slave board. Correspondingly, the screw holes are respectively arranged at the four corners of the BMS slave board.

[0021] Further, the nut columns are insulating columns and are bonded to the BMS slave board bracket through adhesive.

[0022] Further, the BMS slave board bracket is a plastic suction board and is bonded to the side wall of the end plate at the front end of the battery cell module through adhesive.

[0023] Further, both the end plate at the front end of the battery cell module and the end plate at the rear end of the battery cell module are hollow plates with hollow cavities, and a number of rib plates are arranged in the hollow cavities.

[0024] Further, data line through grooves are arranged between the left and right ends of the end plate at the front end of the battery cell module and the two side beam plates.

[0025] Further, a communication plug is also arranged on the front beam plate.

[0026] Further, the box body, the end plate at the front end of the battery cell module, and the end plate at the rear end of the battery cell module are all made of aluminum metal.

[0027] An integrated side-mounted battery cell module data acquisition mechanism provided by the present utility model forms a space for installing a battery cell module between a front battery cell module plate and a rear battery cell module plate by arranging them inside a box. A BMS slave board installation cavity is formed between the front beam plate and the front battery cell module plate, and the BMS slave board is installed on the side wall of the front battery cell module plate, which not only realizes independent operation from the battery cell module but also is as close as possible to the battery cell module for wiring to achieve data acquisition. This mechanism not only has a simple structure and occupies a small space in the battery pack, but also ensures the compact installation of each component, and can ensure the independent operation between the battery module and the BMS slave board, avoiding mutual influence and effectively improving the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of the structure of an integrated side-mounted battery cell module data acquisition mechanism according to the present utility model;

[0029] Figure 2 is a schematic structural diagram of the first perspective of an integrated side-mounted battery cell module data acquisition mechanism according to the present utility model;

[0030] Figure 3 is a schematic structural diagram of the second perspective of an integrated side-mounted battery cell module data acquisition mechanism according to the present utility model;

[0031] Figure 4 is a schematic structural diagram of the connection structure between the BMS slave board bracket and the nut column in an integrated side-mounted battery cell module data acquisition mechanism according to the present utility model;

[0032] Figure 5 is a schematic structural diagram of the structure after the BMS slave board and the BMS slave board bracket are connected in an integrated side-mounted battery cell module data acquisition mechanism according to the present utility model.

[0033] GRAPHICAL MARKS:

[0034] 1 - Upper cover;

[0035] 2 - Box body, 201 - Frame body, 202 - Bottom plate, 203 - Side beam plate, 204 - Front beam plate, 205 - Rear beam plate;

[0036] 3 - Front battery cell module plate;

[0037] 4 - Rear battery cell module plate;

[0038] 5 - Battery cell module installation cavity;

[0039] 6 - BMS slave board installation cavity;

[0040] 7 - Battery cell module;

[0041] 8 - BMS daughter - board bracket;

[0042] 9 - BMS daughter - board;

[0043] 10 - Nut post;

[0044] 11 - Screw;

[0045] 12 - Hollow cavity;

[0046] 13 - Rib plate;

[0047] 14 - Data - line through - slot;

[0048] 15 - Communication plug. Detailed implementation mode

[0049] The following further describes the present utility model in detail with reference to the drawings and embodiments. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0050] As Figures 1 to 3 shown, this solution provides an integrated side - mounted battery cell module data acquisition mechanism, including a mutually - matching upper cover 1 and a box body 2 with an installation cavity. The box body 2 includes a frame body 201 and a bottom plate 202 that are connected to each other. The frame body 201 is a rectangular frame body, including symmetrically - arranged side beam plates 203, and front beam plates 204 and rear beam plates 205 arranged at both ends of the two side beam plates 203;

[0051] The inner side of the front beam plate 204 is provided with a battery cell module front end plate 3, and the battery cell module front end plate 3 divides the installation cavity into a battery cell module installation cavity 5 and a BMS daughter - board installation cavity 6;

[0052] The inner side of the rear beam plate 205 is provided with a battery cell module rear end plate 4, and the battery cell module rear end plate 4 and the battery cell module front end plate 3 are used to clamp both ends of the battery cell module 7;

[0053] The BMS daughter - board installation cavity 6 is provided with a BMS daughter - board bracket 8 that can be connected to the inner wall of the battery cell module front end plate 3, and a BMS daughter - board 9 is arranged on the BMS daughter - board bracket 8.

[0054] Specifically, in this solution, the front end plate 3 of the battery cell module divides the installation cavity into an independent battery cell module installation cavity 5 and a BMS slave board installation cavity 6. The battery cell module installation cavity 5 is used to install the battery cell module 7, and in the BMS slave board installation cavity 6, a BMS slave board bracket 8 for installing the BMS slave board 9 is arranged on the inner wall of the front end plate 3 of the battery cell module, so as to realize data acquisition of the battery cell module 7 by the BMS slave board 9 from the side position without the need to improve the height of the battery pack additionally.

[0055] In addition, a communication plug 15 is also arranged on the front beam plate 204 to realize the connection between the BMS slave board 9 and the BMS main board outside the box body, so as to collect the sampling information from the BMS slave board 9.

[0056] The box body 2, the front end plate 3 of the battery cell module and the rear end plate 4 of the battery cell module are all made of aluminum metal.

[0057] Such as Figure 4 and Figure 5 As shown, in this embodiment, the BMS slave board bracket 8 is a right-angle bracket, and a plurality of nut columns 10 are arranged on its vertical inner wall;

[0058] The BMS slave board 9 is provided with screw holes corresponding to the number of the nut columns 10. After the screws 11 pass through the screw holes, they are screwed with the nut columns 10 to realize the suspension installation of the BMS slave board 9 on the BMS slave board bracket 8.

[0059] It should be noted that adopting this way of suspending and connecting the BMS slave board 9 can facilitate heat dissipation during its own operation.

[0060] As a specific embodiment of this solution, there are four nut columns 10, which respectively correspond to the four corners of the BMS slave board 9; correspondingly, screw holes are respectively arranged at the four corners of the BMS slave board 9, and after the screws 11 pass through the screw holes, they are screwed with the nut columns 10.

[0061] In this embodiment, the nut columns 10 are insulating columns and are bonded to the BMS slave board bracket 8 through adhesive.

[0062] The BMS slave board bracket 8 is a plastic suction board and is bonded to the side wall of the front end plate 3 of the battery cell module through adhesive. Among them, the plastic suction board has the characteristics of light weight, surface gloss, flame retardant, heat resistance, moisture resistance, waterproof, heat preservation, sound insulation, shock absorption, antistatic, etc., and can effectively protect the BMS slave board 9 suspended on the outer side of the BMS slave board bracket 8, ensuring that the battery cell module 7 in the battery cell module installation cavity 5 will not conduct working heat to the BMS slave board 9.

[0063] As shown Figure 2 in the figure, as an optimization of the end plates in this embodiment, the front end plate 3 and the rear end plate 4 of the battery cell module are both hollow plates with a hollow cavity 12, and a plurality of rib plates 13 are arranged in the hollow cavity 12 to increase the strength of the front end plate 3 and the rear end plate 4 of the battery cell module.

[0064] In addition, what is also needed is that since the front end plate 3 of the battery cell module is a hollow plate, the BMS slave board 9 can be effectively isolated from the battery cell module 7, and they do not affect each other during operation.

[0065] Moreover, because they are only separated by the front end plate 3 of the battery cell module, the actual distance between them is very close, which is convenient for the electrical connection between them.

[0066] As an optimization of the integrated side-mounted battery cell module data acquisition mechanism, data line through grooves 14 are provided between the left and right ends of the front end plate 3 of the battery cell module and the two side beam plates 203. The data line through grooves 14 are used to facilitate the battery cell module 7 to be wire-connected to the BMS slave board 9 located on its back through the data line through grooves 14.

[0067] 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 within the protection scope of the present invention.

Claims

1. An integrated side-positioned battery module data acquisition mechanism, comprising a matching upper cover (1) and a box body (2) with an installation cavity, characterized in that: The box body (2) comprises a frame body (201) and a bottom plate (202) connected to each other; the frame body (201) is a rectangular frame body, comprising side beam plates (203) arranged symmetrically to each other, and a front beam plate (204) and a rear beam plate (205) arranged at both ends of the two side beam plates (203); A cell module front end plate (3) is arranged on the inner side of the front beam plate (204), and the cell module front end plate (3) divides the installation cavity into a cell module installation cavity (5) and a BMS slave plate installation cavity (6); A cell module rear end plate (4) is provided on the inner side of the rear beam plate (205), and the cell module rear end plate (4) and the cell module front end plate (3) are used to clamp the two ends of the cell module (7); A BMS slave board bracket (8) that can be connected to the inner wall of the battery module front end plate (3) is arranged in the BMS slave board installation cavity (6), and a BMS slave board (9) is arranged on the BMS slave board bracket (8).

2. The integrated side-position battery module data acquisition mechanism according to claim 1, characterized in that: The BMS slave plate bracket (8) is a right-angle bracket, and a plurality of nut columns (10) are arranged on its vertical inner wall; The BMS slave plate (9) is provided with screw holes whose number corresponds to the number of the nut columns (10), and the screws (11) are screwed to the nut columns (10) after passing through the screw holes.

3. The integrated side-position battery module data acquisition mechanism according to claim 2, characterized in that: There are four nut columns (10), which respectively correspond to the four corners of the BMS slave plate (9); correspondingly, the four corners of the BMS slave plate (9) are respectively provided with the screw holes.

4. An integrated side-position battery module data acquisition mechanism according to claim 2 or 3, characterized in that: The nut column (10) is an insulating column and is bonded to the BMS slave board bracket (8) by means of adhesive.

5. The integrated side-position battery module data acquisition mechanism according to claim 4, characterized in that: The BMS slave plate bracket (8) is a blister plate, which is bonded to the side wall of the front end plate (3) of the battery module by means of adhesive.

6. The integrated side-position battery module data acquisition mechanism according to claim 1, characterized in that: The cell module front end plate (3) and the cell module rear end plate (4) are both hollow plates with a hollow cavity (12), and a plurality of rib plates (13) are arranged in the hollow cavity (12).

7. The integrated side-position battery module data acquisition mechanism according to claim 1, characterized in that: Data line through slots (14) are provided between the left and right ends of the front end plate (3) of the battery module and the two side beam plates (203).

8. An integrated side-position battery module data acquisition mechanism according to claim 1 or 7, characterized in that: A communication plug (15) is also provided on the front beam plate (204).

9. The integrated side-position battery module data acquisition mechanism according to claim 1, characterized in that: The box body (2), the battery cell module front end plate (3) and the battery cell module rear end plate (4) are all made of metal aluminum.

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