BMS slave plate top assembling mechanism for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery management system (BMS) slave plate top assembling mechanism for a battery pack, which comprises a box body with a box cover and a battery cell module arranged in the box body through a battery cell module support, and the battery cell module support comprises a battery cell module frame body for installing the battery cell module. A BMS slave plate bracket is arranged at the top of the battery cell module frame body, a BMS slave plate mounting position is arranged on the surface of the BMS slave plate bracket, a BMS slave plate box body is mounted on the BMS slave plate mounting position, and a BMS slave plate is arranged in the BMS slave plate box body. The mechanism is simple in structure, occupies a small space in the battery pack, does not affect compact installation of other battery pack parts, can ensure independent work between the battery cell module and the BMS slave plate, avoids mutual working influence, and can effectively prolong the service life of the battery pack.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially, it relates to a BMS slave board top assembly mechanism for battery pack. BACKGROUND

[0002] At present, new energy vehicles are widely concerned by the society due to their excellent environmental protection performance, and the requirements for new energy vehicles are also increasing. As a kind of new energy vehicle, electric vehicles are also developing towards high safety, high energy ratio and light weight. 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 cell modules, that is, multiple cell modules are stacked in the same box, and then the cell modules are connected. The core cell module is generally configured with a corresponding number of cells according to the size of the required output voltage, and then all the cells are connected for voltage output.

[0004] The BMS (Battery Management System) in the battery pack is the core of ensuring the safe, efficient and reliable operation of the battery pack. The main functions of 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 cooperation of BMS mainboard and BMS slave board.

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

[0006] Single battery monitoring: the slave board is responsible for monitoring the voltage, temperature and other parameters of the single battery, and transmitting these information to the BMS mainboard in real time. These information is the basis for the BMS mainboard to make state judgment and protection.

[0007] Balancing control: the BMS slave board also has battery balancing function. Due to the performance difference between single batteries in the battery pack, there may be inconsistent voltage. The BMS slave board can adjust the voltage difference between single batteries through balancing control, so that the overall performance of the battery pack is more stable.

[0008] Information transmission: the BMS slave board serves as a bridge between the mainboard and the single battery, responsible for accurately and timely transmitting the information of the single battery to the BMS mainboard; at the same time, the BMS slave board is also responsible for receiving the control instructions of the BMS mainboard and executing the corresponding operations.

[0009] In summary, the BMS slave board is directly used as a data acquisition element of the battery cell module, in order to directly and conveniently acquire data of the battery cell module, and is arranged in the battery pack, such as the surface of the battery cell module. In the working process of the battery cell module, a large amount of heat is often generated, and even the deformation of the battery cell occurs, which is extremely easy to cause the high-temperature damage or the fracture of the BMS slave board on the surface due to the high temperature or the deformation of the battery cell module, and further affects the normal work of the BMS module and the use safety of the vehicle.

[0010] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. Practical new type content

[0011] The utility model discloses a BMS slave board top assembly mechanism for battery pack, which is used for solving the technical problems that the BMS slave board is directly installed with the battery cell module in the conventional technology, and the BMS slave board is easy to be damaged by high temperature or broken due to the deformation of the battery cell module.

[0012] The above-mentioned purpose is realized by the following technical solutions:

[0013] A BMS slave board top assembly mechanism for battery pack, comprising a box body with a box cover, and a battery cell module arranged in the box body through a battery cell module support, wherein the battery cell module support comprises a battery cell module frame body for mounting the battery cell module, a BMS slave board support is arranged on the top of the battery cell module frame body, a BMS slave board mounting position is arranged on the surface of the BMS slave board support, a BMS slave board box body is mounted on the BMS slave board mounting position, and a BMS slave board is arranged in the BMS slave board box body.

[0014] Further, the battery cell module frame body comprises left and right end plates arranged symmetrically, and a side beam plate is arranged symmetrically between the left and right end plates, and the top of the left and right end plates is higher than the side beam plate; the BMS slave board support comprises an end plate connecting portion and a side beam plate connecting portion, the end plate connecting portion is used for connecting the top of the left or right end plate, and the side beam plate connecting portion is used for connecting the side beam plate, and the BMS slave board support and the side beam plate are suspended and parallel after connection.

[0015] Further, the side beam plate connecting portion of the BMS slave board support comprises first and second side beam plate connecting portions arranged symmetrically on both sides of the BMS slave board support, and the first and second side beam plate connecting portions are fixed to the two side beam plates through a support frame respectively.

[0016] Further, the support frame is a right-angle support frame, comprising a first right-angle support edge for connecting with the outer wall of the side beam plate, and a second right-angle support edge for supporting the first side beam plate connecting portion or the second side beam plate connecting portion; the second right-angle support edge, the first side beam plate connecting portion and the second side beam plate connecting portion are all provided with support connecting holes, and are connected through support screws.

[0017] Further, the end plate connecting portion, the left end plate and the right end plate are all provided with end plate connecting holes, and are connected through end plate screws.

[0018] Further, the BMS slave plate support frame is a corrugated plate, comprising a pair of convex ribs arranged in the same direction as the left end plate and the right end plate, a BMS slave plate ventilation groove being formed between the two convex ribs, and the BMS slave plate mounting position being arranged on the surface of the two convex ribs.

[0019] Further, the BMS slave plate box body comprises four fixing feet, the fixing feet and the BMS slave plate support frame are respectively provided with corresponding BMS slave plate threaded holes, and are connected through slave plate screws.

[0020] Further, the battery cell module frame and the BMS slave plate support frame are both made of metal materials.

[0021] Advantages

[0022] The BMS slave plate top assembly mechanism for the battery pack has the advantages that: the structure is simple, the space occupied in the battery pack is small, the compact installation of other battery pack components is not affected, the working independence between the battery cell module and the BMS slave plate is ensured, the working influence between them is avoided, and the service life of the battery pack is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Fig. 1 is a structural schematic view of the BMS slave plate top assembly mechanism for the battery pack according to the present application;

[0024] Figure 2 Fig. 2 is a sectional view of the BMS slave plate top assembly mechanism for the battery pack according to the present application;

[0025] Figure 3 Fig. 3 is a schematic view of the connection between the BMS slave plate support frame and the battery cell module support frame of the BMS slave plate top assembly mechanism for the battery pack according to the present application;

[0026] Figure 4 Fig. 4 is a schematic view of the connection between the BMS slave plate support frame and the BMS slave plate box body of the BMS slave plate top assembly mechanism for the battery pack according to the present application;

[0027] Figure 5 A BMS slave plate support and a BMS slave plate box body connection sectional view in a BMS slave plate top assembly mechanism for a battery pack;

[0028] Figure 6 A BMS slave plate support and a BMS slave plate box body assembly schematic view in a BMS slave plate top assembly mechanism for a battery pack.

[0029] Illustration mark:

[0030] 1 - box body;

[0031] 2 - box cover;

[0032] 3 - electric core module support;

[0033] 4 - electric core module frame, 401 - left end plate, 402 - right end plate, 403 - side beam plate;

[0034] 5 - electric core module;

[0035] 6 - BMS slave plate support, 601 - end plate connecting part, 602 - side beam plate connecting part, 603 - first side beam plate connecting part, 604 - second side beam plate connecting part, 605 - support frame, 606 - first right angle support edge, 607 - second right angle support edge, 608 - convex rib, 609 - BMS slave plate ventilation groove, 610 - BMS slave plate mounting position, 611 - air permeable groove;

[0036] 7 - BMS slave plate box body, 701 - fixed foot;

[0037] 8 - support connecting hole;

[0038] 9 - support screw;

[0039] 10 - end plate connecting hole;

[0040] 11 - end plate screw;

[0041] 12 - BMS slave plate threaded hole;

[0042] 13 - slave plate screw. DETAILED DESCRIPTION

[0043] The utility model will be further explained in detail below according to the drawings and examples. The described example is only a part of the utility model example, and is not all examples. Based on the example in the utility model, all other examples obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0044] As Figures 1-3As shown, the present scheme provides a BMS slave board top assembly mechanism for a battery pack, comprising a box body 1 with a box cover 2, and a battery cell module 5 arranged in the box body 1 through a battery cell module support 3, characterized in that the battery cell module support 3 comprises a battery cell module frame 4 for mounting the battery cell module 5, the top of the battery cell module frame 4 is provided with a BMS slave board support 6, the surface of the BMS slave board support 6 is provided with a BMS slave board mounting position 610, and a BMS slave board box body 7 is mounted on the BMS slave board mounting position 610, and the BMS slave board box body 7 is provided with a BMS slave board.

[0045] By arranging the BMS slave board support 6 on the battery cell module frame 4 which can be connected to the top of the battery cell module frame 4, the BMS slave board is isolated from the battery cell module 5 mounted in the battery cell module frame 4, and the BMS slave board support 6 can be suspended above the battery cell module 5, which can effectively isolate the BMS slave board from the battery cell module 5 while saving the internal space of the box body 1.

[0046] The battery cell module frame 4 and the BMS slave board support 6 are both made of metal material, preferably aluminum, which has the advantages of light weight, high temperature resistance and good heat conduction effect.

[0047] As shown in the drawings, Figure 2 In the present embodiment, the battery cell module frame 4 comprises a left end plate 401 and a right end plate 402 arranged symmetrically, and a side beam plate 403 is arranged symmetrically between the left end plate 401 and the right end plate 402, and the top of the left end plate 401 and the right end plate 402 is higher than the side beam plate 403; the BMS slave board support 6 comprises an end plate connecting portion 601 and a side beam plate connecting portion 602, the end plate connecting portion 601 is used to connect the top of the left end plate 401 or the right end plate 402, and the side beam plate connecting portion 602 is used to connect the side beam plate 403, and after connection, the BMS slave board support 6 is suspended and parallel to the side beam plate 403.

[0048] Through the above structure, the BMS slave board support 6 can be freely arranged on the left end plate 401 side or the right end plate 402 side, after confirmation, only the end plate connecting portion is connected to the top of the specified end plate, and then the side beam plate connecting portion 602 is fixedly connected to the side beam plate 403, and the installation of the BMS slave board support 6 is completed.

[0049] As shown in the drawings, Figures 4-6As shown, the BMS slave plate support 6 in the embodiment includes the first side beam plate connecting part 603 and the second side beam plate connecting part 604 symmetrically arranged on both sides of the BMS slave plate support 6, which are respectively fixed to the two side beam plates 403 through the support frames 605, and the height of the first side beam plate connecting part 603 and the second side beam plate connecting part 604 is indirectly raised through the two support frames 605, which not only facilitates the connection, but also realizes the suspended connection.

[0050] As shown in the drawings, Figure 4 As shown, the support frame 605 in the embodiment is a right-angle support frame, which includes the first right-angle support edge 606 for connecting with the outer wall of the side beam plate 403, and the second right-angle support edge 607 for supporting the first side beam plate connecting part 603 or the second side beam plate connecting part 604; the second right-angle support edge 607 and the first side beam plate connecting part 603 and the second side beam plate connecting part 604 are all provided with support connecting holes 8, which are connected through support screws 9. The first right-angle support edge 606 and the second right-angle support edge 607 perpendicular to each other can stably support the BMS slave plate support 6.

[0051] The end plate connecting part 601 is provided with an end plate connecting hole 10 on the left end plate 401 and the right end plate 402, and is connected through an end plate screw 11.

[0052] Through the above connecting structure, the BMS slave plate support 6 can be firmly and horizontally fixed to the top of the battery cell module frame 4, thereby facilitating the subsequent assembly of the BMS slave plate.

[0053] As shown in the drawings, Figure 4 and Figure 5 As shown, as an optimization of the BMS slave plate support 6 in the embodiment, the BMS slave plate support 6 is a corrugated plate, which includes a pair of convex ribs 608 arranged in the same direction as the left end plate 401 and the right end plate 402, and a BMS slave plate ventilation groove 609 is formed between the two convex ribs 608, and the BMS slave plate mounting position 610 is arranged on the surface of the two convex ribs 608.

[0054] In the embodiment, the convex rib structure parallel to each other is arranged, first, a gas-permeable groove 611 is formed below the convex rib 608, which can supply the lower battery cell module 5 with air, and a BMS slave plate ventilation groove 609 is formed between the two convex ribs 608, which can ventilate the lower side of the BMS slave plate box body 7, which not only does not affect the installation, but also further improves the ventilation and heat dissipation effect.

[0055] In order to facilitate the connection of the BMS slave plate box body 7 and the BMS slave plate support 6, the BMS slave plate box body 7 in the embodiment comprises four fixing feet 701, the fixing feet 701 and the BMS slave plate support 6 are respectively provided with corresponding BMS slave plate threaded holes 12, and are connected through slave plate screws 13, so as to firmly connect the BMS slave plate box body 7 to the BMS slave plate mounting position 610.

[0056] The above merely describes the implementation modes of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A BMS from plate top assembly mechanism for a battery pack, comprising a box body (1) with a box cover (2), and a battery cell module (5) arranged in the box body (1) through a battery cell module support (3), characterized in that, The battery cell module support (3) comprises a battery cell module frame (4) for mounting the battery cell module (5), the top of the battery cell module frame (4) is provided with a BMS slave board support (6), the surface of the BMS slave board support (6) is provided with a BMS slave board mounting position (610), the BMS slave board mounting position (610) is mounted with a BMS slave board box body (7), and the BMS slave board box body (7) is internally provided with a BMS slave board.

2. A BMS slave board top assembly mechanism for a battery pack according to claim 1, characterized in that, The battery cell module frame (4) comprises symmetrically arranged left and right end plates (401) and (402), and a side beam plate (403) is symmetrically arranged between the left and right end plates (401) and (402), and the top of the left and right end plates (401) and (402) is higher than the side beam plate (403); the BMS slave board support (6) comprises an end plate connecting portion (601) and a side beam plate connecting portion (602), the end plate connecting portion (601) is used for connecting the top of the left or right end plate (401) or (402), and the side beam plate connecting portion (602) is used for connecting the side beam plate (403), and the BMS slave board support (6) is suspended and parallel to the side beam plate (403) after connection.

3. A BMS slave board top assembly mechanism for a battery pack according to claim 2, characterized in that, The side beam plate connecting portion (602) of the BMS slave board support (6) comprises a first side beam plate connecting portion (603) and a second side beam plate connecting portion (604) symmetrically arranged on both sides of the BMS slave board support (6), and the first and second side beam plate connecting portions (603) and (604) are respectively fixed to the two side beam plates (403) through support frames (605).

4. The BMS slave board top assembly mechanism for a battery pack of claim 3, wherein, The support frame (605) is a right-angle support frame, comprising a first right-angle support edge (606) for connecting the outer wall of the side beam plate (403), and a second right-angle support edge (607) for supporting the first or second side beam plate connecting portion (603) or (604); the second right-angle support edge (607) and the first and second side beam plate connecting portions (603) and (604) are all provided with support connecting holes (8), and are connected through support screws (9).

5. The BMS slave board top assembly mechanism for a battery pack according to claim 2 or 4, wherein, The end plate connecting portion (601) and the left and right end plates (401) and (402) are all provided with end plate connecting holes (10), and are connected through end plate screws (11).

6. A BMS slave board top assembly mechanism for a battery pack according to claim 2, wherein, The BMS slave board support (6) is a corrugated plate, comprising a pair of convex ribs (608) arranged in the same direction as the left and right end plates (401) and (402), a BMS slave board ventilation groove (609) is formed between the two convex ribs (608), and the BMS slave board mounting position (610) is arranged on the surface of the two convex ribs (608).

7. The BMS slave board top assembly mechanism for a battery pack according to claim 1 or 6, wherein, The BMS slave board box body (7) comprises four fixing feet (701), the fixing feet (701) and the BMS slave board support (6) are respectively provided with corresponding BMS slave board threaded holes (12), and are connected through slave board screws (13).

8. The BMS slave board top assembly mechanism for a battery pack of claim 1, wherein, The battery cell module frame body (4) and the BMS from the board support (6) are both metal materials.

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