BMS mounting structure and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a BMS (battery management system) mounting structure and a battery pack, the BMS mounting structure comprises a first support plate and a second support plate, the first support plate is suitable for being arranged on a shell of the battery pack; the second supporting plate is connected with the first supporting plate, a containing space is formed between the second supporting plate and the first supporting plate, the face, facing the second supporting plate, of the first supporting plate is suitable for fixing the first BMS plate, the two opposite faces of the second supporting plate are suitable for fixing the second BMS plate and the third BMS plate correspondingly, and the first BMS plate and the second BMS plate are located in the containing space. According to the utility model, the first BMS plate is fixed on the first support plate, the second BMS plate and the third BMS plate are integrated and fixed on the two opposite surfaces of the second support plate, and the first support plate is connected with the second support plate, so that the installation space can be saved, the space utilization rate can be improved, and the use requirements of the battery pack can be further met by fixing the three BMS plates, thereby being beneficial to improving the performance of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a BMS mounting structure and a battery pack. Background Technology

[0002] Traditional gasoline-powered vehicles are gradually being replaced by new energy vehicles, among which pure electric vehicles are emerging as a type of new energy vehicle. Many traditional gasoline-powered vehicle platforms are gradually replacing their engine structures with power battery pack structures.

[0003] The battery pack contains a battery management system (BMS) for monitoring and controlling the battery modules. The battery management system is usually carried by a BMS board.

[0004] Existing battery packs generally use a main BMS board and a slave BMS board structure. However, with the continuous development of battery packs, two BMS boards cannot meet the usage requirements of battery packs. However, due to the limitations of internal space and bracket structure, it is difficult to effectively fix more than two BMS boards inside the battery pack, which leads to the limitation of battery pack performance. Utility Model Content

[0005] In view of this, the present invention provides a BMS mounting structure and battery pack to solve the problem that the battery pack performance is limited due to the difficulty in effectively fixing more than two BMS boards caused by the limited installation space inside the battery pack.

[0006] In a first aspect, this utility model provides a BMS installation structure, including:

[0007] The first plate is suitable for mounting on the battery pack casing;

[0008] The second support plate is connected to the first support plate and forms a receiving space between them. The side of the first support plate facing the second support plate is suitable for fixing the first BMS plate. The opposite sides of the second support plate are respectively suitable for fixing the second BMS plate and the third BMS plate. The first BMS plate and the second BMS plate are located within the receiving space.

[0009] Beneficial effects: This utility model fixes the first BMS board to the first support plate, and integrates and fixes the second BMS board and the third BMS board to the opposite sides of the second support plate. The first support plate and the second support plate are connected. The three stacked BMS boards are supported by two brackets, which can save the installation space of the battery pack, improve the space utilization rate, and further meet the usage requirements of the battery pack, which is conducive to improving the performance of the battery pack.

[0010] In one optional embodiment, a plurality of first mounting posts are spaced apart on the side of the first support plate facing the second support plate, and the plurality of first mounting posts are respectively inserted through the first BMS plate to fix the first support plate and the first BMS plate.

[0011] Beneficial effects: The first mounting post can provide better mechanical connection force for the first BMS board, so as to ensure the installation stability and reliability of the first BMS board and prevent the first BMS board from shaking.

[0012] In one optional embodiment, the side of the first support plate facing the second support plate is further provided with a plurality of second mounting posts at intervals, and the periphery of the second support plate is bent toward the first support plate to form a plurality of connecting plates at intervals. The plurality of second mounting posts are respectively inserted through the plurality of connecting plates to fix the first support plate and the second support plate.

[0013] Beneficial effects: The second mounting post is threaded, and the first support plate and the second support plate are fixed together by the threaded connection of the nut to the second mounting post, which facilitates installation and disassembly. The second mounting post can provide better mechanical connection force for the first support plate and the second support plate to ensure the installation stability and reliability of the second support plate.

[0014] In one optional embodiment, the end of the connecting plate is bent to form a lug, the lug is attached to the surface of the first support plate, and the second mounting post passes through the lug.

[0015] Beneficial effects: By attaching the lugs to the surface of the first support plate, the support effect is further improved, preventing the connecting plate from bending under stress and thus enhancing the structural stability of the connecting plate.

[0016] In one alternative embodiment, the periphery of the second support plate is further provided with a flange facing the first support plate.

[0017] Beneficial effects: The flange can limit the position of the third BMS board. At the same time, both the flange and the connecting board are formed by bending the second board, which is simple to manufacture and has low operating cost.

[0018] In one optional embodiment, the first BMS board is provided with a plurality of limiting grooves on its periphery, and the first mounting post is correspondingly disposed in the limiting grooves and is threadedly connected to the first mounting post by a nut.

[0019] Beneficial effects: The first BMS board has a limiting groove on its periphery for mounting the first mounting post, which is then stored and protected. The first mounting post has external threads, and a nut is threadedly connected to the first mounting post to fix the first BMS board to the first support plate, facilitating installation and removal.

[0020] In one optional embodiment, the second support plate is provided with a plurality of third mounting posts and a plurality of fourth mounting posts on opposite sides, the plurality of third mounting posts passing through the second BMS plate to fix the second support plate and the second BMS plate, and the plurality of fourth mounting posts passing through the third BMS plate to fix the second support plate and the third BMS plate.

[0021] Beneficial effects: The third mounting post can provide better mechanical connection force for the second BMS board, so as to ensure the installation stability and reliability of the second BMS board. The fourth mounting post can provide better mechanical connection force for the third BMS board, so as to ensure the installation stability and reliability of the third BMS board.

[0022] In one alternative embodiment, the side of the second support plate facing away from the first support plate is further provided with grooves and protrusions at intervals.

[0023] Beneficial effects: By providing grooves and protrusions at intervals on the side of the second support plate opposite to the first support plate, the second and third BMS plates can be positioned and incorrectly installed can be avoided.

[0024] In one alternative embodiment, both the groove and the protrusion are arrow-shaped.

[0025] Beneficial effects: The grooves and protrusions are all arrow-shaped, serving as indicators and facilitating the installation of the second and third BMS boards.

[0026] Secondly, this utility model also provides a battery pack, comprising:

[0027] case;

[0028] In the BMS mounting structure described above, the first support plate is mounted on the housing.

[0029] Beneficial effects: Because the battery pack includes a BMS mounting structure, it has the same effect as the BMS mounting structure. The first BMS board is fixed on the first support plate, and the second and third BMS boards are integrated and fixed on opposite sides of the second support plate. The first and second support plates are connected, and the three stacked BMS boards are supported by two brackets. This can save battery pack installation space, improve space utilization, and further meet the usage requirements of the battery pack, thus improving the performance of the battery pack. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art 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 from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a BMS installation structure according to an embodiment of the present utility model;

[0032] Figure 2 This is an exploded view of a BMS installation structure according to an embodiment of the present invention;

[0033] Figure 3 This is a top view of the second support plate of a BMS mounting structure according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. First support plate; 101. First mounting post; 102. Second mounting post; 2. Second support plate; 201. Connecting plate; 2011. Support lug; 202. Flanged edge; 203. Third mounting post; 204. Fourth mounting post; 205. Groove; 206. Protrusion; 3. First BMS plate; 301. Limiting groove; 4. Second BMS plate; 5. Third BMS plate; 6. Nut. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0038] According to embodiments of the present invention, on the one hand, such as Figure 1As shown, a BMS mounting structure is provided, mainly including: a first support plate 1 and a second support plate 2; the first support plate 1 is adapted to be disposed on the housing of the battery pack; the second support plate 2 is connected to the first support plate 1 and forms an accommodating space between them; the side of the first support plate 1 facing the second support plate 2 is adapted to fix a first BMS board 3, and the opposite sides of the second support plate 2 are adapted to fix a second BMS board 4 and a third BMS board 5, respectively; the first BMS board 3 and the second BMS board 4 are located within the accommodating space.

[0039] Therefore, the BMS mounting structure provided in this embodiment of the present invention fixes the first BMS board 3 on the first support plate 1, and integrates and fixes the second BMS board 4 and the third BMS board 5 on opposite sides of the second support plate 2. The first support plate 1 and the second support plate 2 are connected, and the three stacked BMS boards are supported by two brackets, which can save the installation space of the battery pack, improve the space utilization rate, and further meet the usage requirements of the battery pack, thus improving the performance of the battery pack.

[0040] Specifically, the first support plate 1 is fixed to the battery pack casing, and the surfaces of the first support plate 1 and the second support plate 2 forming the receiving space are arranged parallel to each other. After the first BMS plate 3 and the second BMS plate 4 are installed, a gap is left between them to prevent vibration-induced collisions from damaging the first BMS plate 3 and the second BMS plate 4.

[0041] It should be noted that the present invention does not limit the structure of the first BMS board 3, the second BMS board 4, and the third BMS board 5. Any existing structure can be selected as needed. BMS boards of the same model or different models can be selected.

[0042] It should be noted that this embodiment of the invention does not limit the fixing structure of the first support plate 1 and the first BMS plate 3, and any existing connection structure can be selected as needed. For example, the first support plate 1 and the first BMS plate 3 can be fixed by snap-fit ​​for easy and quick installation, or the first support plate 1 and the first BMS plate 3 can be fixed by fasteners for a firm connection.

[0043] In one embodiment, such as Figure 1 and Figure 2 As shown, a plurality of first mounting posts 101 are spaced apart on the side of the first support plate 1 facing the second support plate 2. The plurality of first mounting posts 101 are respectively inserted through the first BMS plate 3 to fix the first support plate 1 and the first BMS plate 3. The first mounting posts 101 can provide good mechanical connection force for the first BMS plate 3 to ensure the installation stability and reliability of the first BMS plate 3 and prevent the first BMS plate 3 from shaking.

[0044] Specifically, such as Figure 2As shown, the first support plate 1 includes a first panel and a second panel connected at an angle, and the first panel and the second panel can be integrally formed. Two first mounting posts 101 are fixed to opposite sides of the first panel. The first BMS plate 3 has first mounting holes on opposite sides, and four first mounting posts 101 are respectively inserted into the four first mounting posts 101 and fixed by nuts 6. The second panel is inclined downward and fixed to the battery pack housing by bolts.

[0045] It should be noted that the present invention does not limit the connection structure of the first support plate 1 and the second support plate 2, as long as the first support plate 1 and the second support plate 2 are fixed together and there is room for them to accommodate each other.

[0046] In one embodiment, such as Figure 2 As shown, the first support plate 1 has multiple second mounting posts 102 spaced apart on its side facing the second support plate 2. The periphery of the second support plate 2 is bent towards the first support plate 1 to form multiple connecting plates 201 spaced apart. The multiple second mounting posts 102 are correspondingly inserted through the multiple connecting plates 201 to fix the first support plate 1 and the second support plate 2. The second mounting posts 102 are threaded, and nuts 6 are threadedly connected to the second mounting posts 102 to fix the first support plate 1 and the second support plate 2 together, facilitating installation and disassembly. The second mounting posts 102 can provide good mechanical connection force for the first support plate 1 and the second support plate 2 to ensure the installation stability and reliability of the second support plate 2.

[0047] Specifically, such as Figure 2 As shown, second mounting posts 102 are fixedly installed at the four corners of the first panel of the first support plate 1. The second mounting posts 102 are located outside the first mounting posts 101. The four corners of the second support plate 2 are bent toward the first support plate 1 to form four connecting plates 201. The four connecting plates 201 are respectively provided with second mounting holes, and the four second mounting posts 102 are correspondingly inserted into the second mounting holes to fix the first support plate 1 and the second support plate 2.

[0048] To distinguish the first mounting post 101 from the second mounting post 102, and to facilitate the installation of the second support plate 2 and the first BMS plate 3, the height of the first mounting post 101 is greater than that of the second mounting post 102.

[0049] Furthermore, in one embodiment, such as Figure 2 and Figure 3 As shown, the end of the connecting plate 201 is bent to form a lug 2011, which is attached to the surface of the first support plate 1. The second mounting post 102 passes through the lug 2011. Attaching the lug 2011 to the surface of the first support plate 1 further provides support, prevents the connecting plate 201 from bending under stress, and helps to improve the structural stability of the connecting plate 201.

[0050] Furthermore, in one embodiment, such as Figure 2 As shown, the second support plate 2 is also provided with a flange 202 facing the first support plate 1 on its periphery. The flange 202 can limit the third BMS plate 5. At the same time, both the flange 202 and the connecting plate 201 are formed by bending the second support plate 2, which is simple to manufacture and has low operating cost.

[0051] In one embodiment, such as Figure 2 As shown, the first BMS plate 3 has multiple limiting grooves 301 on its periphery. The first mounting post 101 is correspondingly disposed in the limiting grooves 301 and is threadedly connected to the first mounting post 101 by a nut 6. The limiting grooves 301 on the periphery of the first BMS plate 3 accommodate and protect the first mounting post 101. The first mounting post 101 has external threads, and is threadedly connected to the first mounting post 101 by a nut 6, fixing the first BMS plate 3 to the first support plate 1 for easy installation and removal. The nut 6 and the limiting grooves 301 cooperate to fix the first mounting post 101, ensuring a firm connection. The nut 6 can be tightened or loosened to allow for adjustment and removal of the first BMS plate 3.

[0052] In one embodiment, such as Figure 2 As shown, the second support plate 2 has multiple third mounting posts 203 and multiple fourth mounting posts 204 on opposite sides. The multiple third mounting posts 203 pass through the second BMS plate 4 to fix the second support plate 2 and the second BMS plate 4. The third mounting posts 203 can provide good mechanical connection force for the second BMS plate 4 to ensure the installation stability and reliability of the second BMS plate 4. The multiple fourth mounting posts 204 pass through the third BMS plate 5 to fix the second support plate 2 and the third BMS plate 5. The fourth mounting posts 204 can provide good mechanical connection force for the third BMS plate 5 to ensure the installation stability and reliability of the third BMS plate 5.

[0053] Specifically, four third mounting posts 203 and four fourth mounting posts 204 are fixedly installed at the four corners of opposite sides of the second support plate 2. The second BMS plate 4 has a third mounting hole corresponding to the third mounting post 203, and the third BMS plate 5 has a fourth mounting hole corresponding to the fourth mounting post 204. The third mounting post 203 passes through the third mounting hole and is threadedly connected to the nut 6 to fix the second support plate 2 and the second BMS plate 4. The fourth mounting post 204 passes through the fourth mounting hole and is threadedly connected to the nut 6 to fix the second support plate 2 and the third BMS plate 5.

[0054] During assembly, the second panel of the first support plate 1 is first fixed to the battery pack housing. Then, the first mounting holes on the first BMS plate 3 pass through the first mounting posts 101 on the first support plate 1 and are threadedly connected to the first mounting posts 101 by nuts 6 to fix the first BMS plate 3 on the first support plate 1.

[0055] The third mounting holes on the second BMS plate 4 pass through the third mounting posts 203 of the second support plate 2, and are threadedly connected to the third mounting posts 203 via nuts 6, thereby fixing the second BMS plate 4 onto the second support plate 2. Similarly, the fourth mounting holes on the third BMS plate 5 pass through the fourth mounting posts 204 of the second support plate 2, and are threadedly connected to the fourth mounting posts 204 via nuts 6, thereby fixing the fourth BMS plate onto the second support plate 2.

[0056] Finally, the second mounting post 102 on the lug 2011 is passed through the second mounting post 102 on the first support plate 1, and is threadedly connected to the second mounting post 102 by the nut 6, so as to fix the second support plate 2 on the first support plate 1.

[0057] In one embodiment, such as Figure 3 As shown, the second support plate 2 is provided with grooves 205 and protrusions 206 at intervals on the side facing away from the first support plate 1. By providing grooves 205 and protrusions 206 at intervals on the side of the second support plate 2 facing away from the first support plate 1, the second BMS plate 4 and the third BMS plate 5 can be positioned to limit their movement and prevent the second BMS plate 4 and the third BMS plate 5 from being installed incorrectly.

[0058] Specifically, a groove 205 and a protrusion 206 are formed by stamping on opposite sides of the second support plate 2. The groove 205 is formed on the side of the second support plate 2 facing away from the first support plate 1, and another protrusion is formed on the side of the second support plate 2 facing the first support plate 1. The second BMS plate 4 is recessed into the corresponding protrusion to form a mounting groove for mounting the second BMS plate 4. Similarly, the protrusion 206 is formed on the side of the second support plate 2 facing away from the first support plate 1, and another groove is formed on the side of the second support plate 2 facing the first support plate 1. The third BMS plate 5 protrudes outward from the corresponding groove to form a limiting part for mounting the third BMS plate 5.

[0059] Furthermore, in one embodiment, such as Figure 3 As shown, both the groove 205 and the protrusion 206 are arrow-shaped. The arrows are used for indication, facilitating the installation of the second BMS board 4 and the third BMS board 5. In addition, the sides where the wiring ports of the second BMS board 4 and the third BMS board 5 are located are aligned with the direction of the arrows to further prevent incorrect installation of the second BMS board 4 and the third BMS board 5, thus facilitating installation.

[0060] Of course, the groove 205 and the protrusion 206 can also be selected from other conventional indicator shapes as needed, such as graphic symbols, indicator symbols, etc. In this regard, the present invention does not impose too many restrictions.

[0061] According to an embodiment of the present invention, another aspect provides a battery pack, which mainly includes: a housing and a BMS mounting structure, wherein a first support plate 1 is disposed on the housing.

[0062] Because the battery pack includes a BMS mounting structure, it has the same effect as the BMS mounting structure. The first BMS board 3 is fixed on the first support plate 1, and the second BMS board 4 and the third BMS board 5 are integrated and fixed on opposite sides of the second support plate 2. The first support plate 1 and the second support plate 2 are connected. The three stacked BMS boards are supported by two brackets, which can save the installation space of the battery pack, improve the space utilization rate, and further meet the usage requirements of the battery pack, which is conducive to improving the performance of the battery pack.

[0063] Specifically, the housing includes a lower housing, and the first support plate 1 is fixed to the lower housing by fasteners, which can be bolts.

[0064] To achieve the basic functions of the battery pack, the battery pack in this embodiment may also include other necessary modules or components, such as battery cells and an upper casing. It should be noted that any suitable existing structure can be selected from the other necessary modules or components included in the battery pack. To clearly and concisely illustrate the technical solution provided in this embodiment, the above-mentioned parts will not be repeated here, and the accompanying drawings have also been simplified accordingly. However, it should be understood that the scope of this utility model is not limited as a result.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A BMS installation structure, characterized in that, include: The first plate is suitable for mounting on the battery pack casing; The second support plate is connected to the first support plate and forms a receiving space between them. The side of the first support plate facing the second support plate is suitable for fixing the first BMS plate. The opposite sides of the second support plate are respectively suitable for fixing the second BMS plate and the third BMS plate. The first BMS plate and the second BMS plate are located within the receiving space.

2. The BMS installation structure according to claim 1, characterized in that, The first support plate has a plurality of first mounting posts spaced apart on the side facing the second support plate. The plurality of first mounting posts are respectively inserted through the first BMS plate to fix the first support plate and the first BMS plate.

3. The BMS installation structure according to claim 2, characterized in that, The first support plate is provided with a plurality of second mounting posts at intervals on the side facing the second support plate. The periphery of the second support plate is bent toward the first support plate to form a plurality of connecting plates at intervals. The plurality of second mounting posts are respectively inserted through the plurality of connecting plates to fix the first support plate and the second support plate.

4. The BMS installation structure according to claim 3, characterized in that, The end of the connecting plate is bent to form a lug, which is attached to the surface of the first support plate, and the second mounting post passes through the lug.

5. The BMS installation structure according to claim 4, characterized in that, The second support plate also has a flange facing the first support plate on its periphery.

6. The BMS installation structure according to claim 2, characterized in that, The first BMS board has multiple limiting grooves on its periphery, and the first mounting post is correspondingly located in the limiting grooves and is threadedly connected to the first mounting post by a nut.

7. The BMS installation structure according to any one of claims 1 to 6, characterized in that, The second support plate has multiple third mounting posts and multiple fourth mounting posts on its opposite sides. The multiple third mounting posts pass through the second BMS plate to fix the second support plate and the second BMS plate. The multiple fourth mounting posts pass through the third BMS plate to fix the second support plate and the third BMS plate.

8. The BMS installation structure according to any one of claims 1 to 6, characterized in that, The side of the second support plate opposite to the first support plate is also provided with grooves and protrusions at intervals.

9. The BMS installation structure according to claim 8, characterized in that, Both the groove and the protrusion are arrow-shaped.

10. A battery pack, characterized in that, include: case; The BMS mounting structure according to any one of claims 1 to 9, wherein the first support plate is disposed on the housing.

Images