Battery distribution box and battery management mainboard connecting structure and battery

Abstract

The utility model relates to the technical field of batteries, in particular to a battery distribution box and battery management mainboard connecting structure and a battery, the battery distribution box and battery management mainboard connecting structure comprises a box body, an adapter plate and a battery management mainboard, a mounting cavity is formed in the box body, and an electrical part is arranged in the mounting cavity; the adapter plate is arranged on the box body and is electrically connected with the electrical part, and a female terminal is arranged on the adapter plate; the battery management mainboard is arranged on the outer surface of the box body, a male terminal is arranged on the edge of the battery management mainboard, the male terminal extends outwards along the plane where the battery management mainboard is located, and the male terminal is electrically connected with the female terminal through a plugging structure. In the plugging and unplugging process, the male terminal is stressed along the plane where the battery management mainboard is located, so that the battery management mainboard can be prevented from being damaged due to stress in other directions to a large extent, rapid plugging and unplugging of the male terminal and the female terminal are achieved, after-sales maintenance and replacement of the battery management mainboard are facilitated, BDU production and assembly are simplified, and the production takt is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a battery distribution box and a battery management mainboard connection structure and a battery. BACKGROUND

[0002] The current social energy crisis is increasingly serious, and new energy vehicles, especially electric vehicles, are attracting more and more social attention. The power battery is an important part of an electric vehicle. Due to the demand for vehicle range and output power, the power battery generally has characteristics such as large capacity and high voltage (300V-500V).

[0003] The battery distribution box BDU (Battery Disconnection Unit, a kind of battery distribution box) is a power distribution unit of the power battery pack. Its function is to ensure that the battery pack transmits power energy to the vehicle and receives the instructions of the battery management system BMS (Battery Management System) at any time, and realizes the power-on and power-off functions of the battery pack in time. It is a bridge for power supply and signal transmission between the internal and external high-voltage equipment of the battery pack. Due to the energy density requirement of the battery pack, more battery packs need to be arranged inside the battery pack to achieve higher endurance, and the space left for the battery management system is very small.

[0004] The prior art mainly arranges the battery distribution box assembly and the battery management system mainboard as separate individuals through distribution, and realizes communication function through wire harness connection between the two. The above scheme occupies a large space and has high requirements for the space of the battery pack. At the same time, if the battery distribution box and the battery management system are arranged far apart, the cost of the wire harness will also increase. The connection between the wire harness and the battery distribution box and the battery management system is connector plug-in, and the cost of the connector itself is also high. Practical new type content

[0005] The application provides a battery distribution box and a battery management mainboard connection structure and a battery to solve the problem of large space occupied by the battery distribution box and the battery management system mainboard in the prior art, and the inconvenience of disassembling the mainboard for after-sales replacement.

[0006] In one aspect, the application provides a battery distribution box and a battery management mainboard connection structure, comprising:

[0007] The box body is internally formed with a mounting cavity, and the mounting cavity is provided with an electrical component;

[0008] The adapter plate is arranged on the box body and electrically connected with the electrical component, and the adapter plate is provided with a female terminal;

[0009] The battery management mainboard is arranged on the outer surface of the box body, and the edge of the battery management mainboard is provided with a male terminal, which extends outward along the plane where the battery management mainboard is located, and the male terminal is electrically connected with the female terminal through a plug-in structure.

[0010] In a possible design, the adapter plate is perpendicular to the battery management mainboard, and the female terminal is arranged on the surface of the adapter plate in a direction perpendicular to the plane where the adapter plate is located.

[0011] In a possible design, the box body comprises:

[0012] The first shell, the adapter plate and the electrical component are arranged on the first shell;

[0013] The second shell is detachably connected with the first shell, the battery management mainboard is arranged on the outer surface of the second shell, and the second shell is provided with a relief hole, and at least part of the adapter plate can extend out of the installation cavity from the relief hole to be connected with the battery management mainboard.

[0014] In a possible design, the adapter plate is connected with the first shell through a first bolt, and the battery management mainboard is connected with the second shell through a second bolt.

[0015] In a possible design, the first shell is provided with a mounting groove, and the electrical component is arranged in the mounting groove.

[0016] The second shell has a bottom wall and a side wall, the bottom wall is arranged opposite to the slot opening of the mounting groove, the side wall is connected with the first shell, the battery management mainboard is arranged on the side of the bottom wall away from the mounting groove, and the relief hole penetrates through the bottom wall.

[0017] In a possible design, the relief hole is arranged at the position of the bottom wall close to one of the side walls.

[0018] In a possible design, the first shell is connected with the second shell through a clamping piece, and the clamping piece comprises:

[0019] The clamping block is arranged on one of the first shell and the second shell, and the surface of the clamping block is formed with a guide inclined surface and a locking surface.

[0020] The clamping sleeve is arranged on the other one of the first shell and the second shell, and the clamping sleeve has a locking wall, and the clamping sleeve can make the locking wall abut against the locking surface by sliding along the guide inclined surface.

[0021] In a possible design, a protective sheet is further arranged on the outer side of the adapter plate and the battery management mainboard.

[0022] In a possible design, the protective sheet is in an "L" shape.

[0023] In another aspect, the application also provides a battery comprising the battery distribution box and battery management mainboard connection structure as described above.

[0024] The application has the following advantages:

[0025] The battery distribution box and battery management mainboard connection structure of the application is provided with female terminals on the adapter plate, and male terminals are provided on the battery management mainboard. The adapter plate and the battery management mainboard are electrically connected through the plug-in connection of the male terminals and the female terminals, so that the battery management mainboard is directly installed on the distribution box. At the same time, the male terminals extend outward along the plane where the battery management mainboard is located. During the plug-in process, the male terminals are stressed along the plane where the battery management mainboard is located, which can largely avoid the damage of the battery management mainboard due to stress in other directions, so as to realize the quick plug-in of the male terminals and the female terminals, facilitate the after-sales maintenance and replacement of the battery management mainboard. The battery distribution box and battery management mainboard connection structure of the application can simplify the BDU production and assembly, save the production line production time, and improve the production rhythm.

[0026] The battery provided by the application contains the battery distribution box and battery management mainboard connection structure of the application, and therefore contains all the advantages of the battery distribution box and battery management mainboard connection structure. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0028] Figure 1 The overall structure schematic diagram of the battery distribution box and battery management mainboard connection structure provided by the embodiment of the application is shown in the figure.

[0029] Figure 2 The structure exploded view of the battery distribution box and battery management mainboard connection structure provided by the embodiment of the application is shown in the figure.

[0030] Figure 3 The structure schematic diagram of the first housing of the battery distribution box and battery management mainboard connection structure provided by the embodiment of the application is shown in the figure.

[0031] Figure 4 The assembly drawing of the first housing and the adapter plate of the battery distribution box and battery management mainboard connection structure provided by the embodiment of the application is shown in the figure.

[0032] Figure 5The first shell of the battery distribution box and the battery management mainboard connection structure, the adapter plate and the battery management mainboard assembly diagram provided by the embodiment of the application.

[0033] Reference signs:

[0034] 100, box body; 110, first shell; 111, mounting groove; 120, second shell; 121, avoiding hole; 122, bottom wall; 123, side wall; 200, adapter plate; 210, main plate; 220, ear plate; 230, female terminal; 231, first clamping piece; 232, second clamping piece; 300, battery management mainboard; 310, male terminal; 400, first bolt; 500, second bolt; 610, clamping block; 611, guide inclined surface; 612, locking surface; 620, clamping sleeve; 621, locking wall; 700, protection sheet. DETAILED DESCRIPTION

[0035] The technical solutions of the application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0036] The technical solutions of the application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application. Figures 1-5 The battery distribution box and the battery management mainboard connection structure provided by the embodiment of the application will be described below.

[0037] Referring to Figure 1 , Figure 2As shown, the battery distribution box and the battery management mainboard connection structure provided by the embodiments of the present application comprises a box body 100, an adapter plate 200 and a battery management mainboard 300. The inside of the box body 100 is formed with a mounting cavity. Electrical components (mainly referring to the contactor, fuse, etc. in the BDU) are arranged in the mounting cavity. For example, a plurality of mounting grids of different sizes are arranged in the box body 100. Different electrical components are respectively arranged in the corresponding mounting grids. The adapter plate 200 is arranged on the box body 100. The adapter plate 200 is connected with the box body 100 through a first bolt 400. In some embodiments, the adapter plate 200 is arranged on the outside of the box body 100. A wire hole is formed on the box body 100. The wire and the terminal can pass through the wire hole. The adapter plate 200 and the electrical components are electrically connected through the wire and the terminal. In other embodiments, the adapter plate 200 is provided with a relief hole 121. Part of the adapter plate 200 is arranged in the box body and is electrically connected with the electrical components through the wire and the terminal. Part of the adapter plate 200 passes through the relief hole 121 and is arranged outside the box body. The adapter plate 200 arranged outside the box body is provided with a female terminal 230. The battery management mainboard 300 is arranged on the outer surface of the box body 100. The battery management mainboard 300 is connected with the box body 100 through a second bolt 500. The edge of the battery management mainboard 300 is provided with a male terminal 310. The male terminal 310 extends outward along the plane where the battery management mainboard 300 is arranged. Specifically, a plurality of male terminals 310 extend outward along one side of the battery management mainboard 300. The number of the male terminals 310 corresponds to the number of the female terminals 230 on the adapter plate 200. The male terminal 310 and the female terminal 230 are electrically connected through a plug-in structure. In some embodiments, the female terminal 230 is provided with a first clamping piece 231 and a second clamping piece 232. Both the first clamping piece 231 and the second clamping piece 232 are elastic clamping pieces. The male terminal 310 can be inserted between the first clamping piece 231 and the second clamping piece 232. The male terminal 310 can be clamped by the first clamping piece 231 and the second clamping piece 232 under the elastic force of the first clamping piece 231 and the second clamping piece 232 to prevent the male terminal 310 from being pulled out, thereby ensuring the reliability of the connection between the male terminal 310 and the female terminal 230.

[0038] By using the plug-in connection between the male terminal 310 and the female terminal 230, the adapter plate 200 and the battery management mainboard 300 can be electrically connected. The battery management mainboard 300 is directly arranged on the distribution box, which is conducive to reducing the volume and occupying less space in the battery pack. Meanwhile, the male terminal 310 extends outward along the plane where the battery management mainboard 300 is arranged. During the plug-in process, the male terminal 310 is stressed along the plane where the battery management mainboard 300 is arranged. The battery management mainboard 300 can be prevented from being damaged due to stress in other directions to a great extent. Therefore, the male terminal 310 and the female terminal 230 can be quickly plugged in and out, which is convenient for the after-sales maintenance and the quick replacement of the battery management mainboard 300.

[0039] Reference Figure 5As shown, in some embodiments provided by the present application, the adapter plate 200 is perpendicular to the battery management main board 300, the female terminal 230 is protrudingly arranged on the surface of the adapter plate 200 in a direction perpendicular to the plane where the adapter plate 200 is located, the adapter plate 200 and the battery management main board 300 form a right angle structure, the adapter plate 200 is located at one side of the box body 100, and the battery management main board 300 is located at another adjacent side, so as to ensure that a larger installation space is reserved for the battery management main board 300. In some other embodiments, the female terminal 230 can also be arranged at the edge of the adapter plate 200 and extend along the plane where the adapter plate 200 is located, so that the adapter plate 200 and the battery management main board 300 are located in the same plane, for example, outside one side of the box body 100.

[0040] Referring to Figure 2 As shown, in some embodiments provided by the present application, the box body 100 includes a first shell 110 and a second shell 120, the second shell 120 is detachably connected with the first shell 110, the adapter plate 200 and the electrical components are respectively installed on the first shell 110, specifically, the first shell 110 is provided with a mounting groove 111, the electrical components are arranged in the mounting groove 111, and the adapter plate 200 is installed at the edge of the first shell 110 through the first bolt 400; the battery management main board 300 is installed on the outer surface of the second shell 120 through the second bolt 500, the second shell 120 is provided with a relief hole 121, and at least part of the adapter plate 200 can extend out of the installation cavity from the relief hole 121 to be connected with the battery management main board 300. Figure 3 、 Figure 4 As shown, in some specific embodiments, the adapter plate 200 includes a main plate 210 and an ear plate 220, the main plate 210 is in a rectangular shape, and the ear plate 220 is integrally formed on one side of the main plate 210, for example, there are three ear plates 220, and mounting holes are respectively arranged in the three ear plates 220, the first bolt 400 passes through the mounting holes to install the adapter plate 200 at the edge of the first shell 110, the main plate 210 passes through the relief hole 121 and is located outside the first shell 110, and the female terminal 230 is arranged on the main plate 210, so as to realize plug-in connection with the male terminal 310 on the battery management main board 300 located on the outer surface of the second shell 120.

[0041] In some embodiments, the second shell 120 has a bottom wall 122 and a side wall 123. The bottom wall 122 is arranged opposite to the slot of the mounting slot 111 and protects the electrical components in the mounting slot 111. The side wall 123 is arranged at the edge of the bottom wall 122 and is connected perpendicularly to the bottom wall 122. The side wall 123 is located on the outer surface of the first shell 110 and is connected to the outer surface of the first shell 110 by clamping, screwing or pinning, thereby achieving detachable connection of the first shell 110 and the second shell 120. The battery management mainboard 300 is installed on the side of the bottom wall 122 away from the mounting slot 111, i.e. the outer side of the bottom wall 122. The avoiding hole 121 penetrates the bottom wall 122, and the adapter board 200 extends from the avoiding hole 121. Specifically, the avoiding hole 121 is arranged at the position of the bottom wall 122 close to one of the side walls 123. In this way, the adapter board 200 is equivalent to being located at the edge of the bottom wall 122, so that the outer side of the bottom wall 122 can reserve a larger installation space for the battery management mainboard 300.

[0042] Referring to Figure 2 , Figure 3 In some embodiments, the first shell 110 and the second shell 120 are connected by a clamping piece. The clamping piece includes a clamping block 610 and a clamping sleeve 620. The clamping block 610 is arranged on one of the first shell 110 and the second shell 120, and the clamping sleeve 620 is arranged on the other one of the first shell 110 and the second shell 120. Specifically, the clamping block 610 is in the shape of a triangular prism, and the surface of the clamping block 610 is formed with a guide slope 611 and a locking surface 612. The clamping sleeve 620 is in the shape of a rectangular ring and has a locking wall 621. The clamping sleeve 620 can make the locking wall 621 abut against the locking surface 612 by sliding along the guide slope 611. In some embodiments, one of the two side walls 123 of the second shell 120 has the clamping block 610, and the other one has the clamping sleeve 620. The first shell 110 has the clamping sleeve 620 corresponding to the position of the clamping block 610, and has the clamping block 610 corresponding to the position of the clamping sleeve 620. During connection of the first shell 110 and the second shell 120, the side wall 123 of the second shell 120 moves along the outer surface of the first shell 110. At this time, the clamping sleeve 620 slides relative to the guide slope 611 until the locking surface 612 moves to the end of the guide slope 611, causing the clamping block 610 to slide into the inner hole of the clamping sleeve 620. At this time, the locking surface 612 abuts against the clamping wall, thereby achieving locking of the first shell 110 and the second shell 120.

[0043] Referring to Figure 1 , Figure 2As shown, in some embodiments provided in the application, the battery distribution box and battery management mainboard connecting structure further comprises a protective sheet 700, the protective sheet 700 is arranged outside the adapter plate 200 and the battery management mainboard 300, specifically, the protective sheet 700 is in the shape of "L", the protective sheet 700 is installed on the second shell 120, the protective sheet 700 is spaced apart from the adapter plate 200 and the battery management mainboard 300 by a certain safety distance, the protective sheet 700 is made of PC sheet, the PC sheet has excellent impact resistance, high tensile strength, bending strength and compression strength, small creep, stable size, good heat resistance up to 125 degrees and low temperature resistance down to minus 45 degrees, and thus can play a good protection role.

[0044] The installation process of the battery distribution box and battery management mainboard connecting structure of the application:

[0045] Referring to Figure 3 As shown, first, the electrical components are installed into the mounting groove 111 of the first shell 110; referring to Figure 4 As shown, the adapter plate 200 is then fixed to the first shell 110 by the first bolt 400; then the second shell 120 is moved towards the first shell 110 along the depth direction of the mounting groove 111, during the movement, the avoiding hole 121 on the second shell 120 is kept corresponding to the position of the adapter plate 200, until the clamping block 610 and the clamping sleeve 620 are locked with each other, at this time, the adapter plate 200 extends out of the second shell 120 from the avoiding hole 121; then the male plug of the battery management mainboard 300 is inserted into the female plug of the adapter plate 200; then the battery management mainboard 300 is fixed to the second shell 120 by the second bolt 500, that is, the installation state in Figure 5 As shown; finally, the protective sheet 700 is installed on the second shell 120, so that the protective sheet 700 protects the battery management mainboard 300 and the adapter plate 200, and the state after installation is shown in Figure 1 As shown.

[0046] In the embodiments of the application, a battery is also provided, which comprises the battery distribution box and battery management mainboard connecting structure in the above embodiments.

[0047] It should be noted that the battery comprises the battery distribution box and battery management mainboard connecting structure, and thus comprises all the advantages of the battery distribution box and battery management mainboard connecting structure, which will not be described here.

[0048] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0049] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0050] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0052] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as a limitation of the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A battery distribution box and battery management mainboard connection structure, characterized in that, The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure.

2. The battery distribution box and battery management mainboard connection structure according to claim 1, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure.

3. The battery distribution box and battery management mainboard connection structure according to claim 1 or 2, characterized in that, The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure.

4. The battery distribution box and battery management mainboard connection structure according to claim 3, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure.

5. The battery distribution box and battery management mainboard connection structure according to claim 3, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure.

6. The battery distribution box and battery management mainboard connection structure according to claim 5, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure.

7. The battery distribution box and battery management mainboard connection structure according to claim 3, characterized in that, The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure. The application relates to a battery distribution box and a battery management mainboard connecting structure.

8. The battery distribution box and battery management mainboard connection structure according to claim 3, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure.

9. The battery distribution box and battery management mainboard connection structure according to claim 8, characterized in that: The application relates to a battery distribution box and a battery management mainboard connecting structure.

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