Battery management system, battery pack and electric equipment

Abstract

The utility model relates to a battery management system, a battery pack and electric equipment, the battery management system comprises a main board unit, and the main board unit comprises a main board body and a first electric connection part arranged at the bottom of the main board body and used for being connected with a second electric connection part of a charging control unit. Compared with the prior art, wire harnesses can be omitted, the occupied lateral space of the mainboard body can be saved, and the space utilization rate of the battery pack is increased.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery management, and in particular, to a battery management system, a battery pack and an electric device. Background Art

[0002] BMS (Battery Manager System) products collect the high voltage and current of the battery cells, and then control the battery charging and discharging process, protect the battery, and improve the overall performance of the battery management system. It is an important link between the vehicle-mounted power battery and the vehicle-mounted charging controller of the electric vehicle. In the related technology, the mainboard unit of the battery management system is provided with an electrical connection part on the side, which is connected to the vehicle-mounted charging controller through a wiring harness. On the one hand, it occupies a large space in the battery pack, and on the other hand, the structure connected by the wiring harness is relatively cumbersome. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery management system, a battery pack and an electric device, wherein the battery management system is used to at least partially solve the related technical problems.

[0004] In order to achieve the above-mentioned objectives, in a first aspect, the present disclosure provides a battery management system, including a mainboard unit, wherein the mainboard unit includes a mainboard body and a first electrical connection part arranged at the bottom of the mainboard body for connecting to a second electrical connection part of a charging control unit.

[0005] Optionally, the battery management system further comprises a housing having an installation space, and the mainboard unit is arranged in the installation space;

[0006] An opening is formed at the bottom of the housing for the first electrical connection portion to pass through.

[0007] Optionally, a sealing member is provided around the opening and the first electrical connection portion; and / or

[0008] The first electrical connection portion is constructed as a floating plug-in male connector structure or a floating plug-in female connector structure.

[0009] Optionally, the housing includes an upper cover and a lower shell;

[0010] The upper cover comprises a first cover body portion and a second cover body portion, wherein the plane where the first cover body portion is located is higher than the plane where the second cover body portion is located;

[0011] The first cover portion and the lower shell enclose a first space, the second cover portion and the lower shell enclose a second space, and the first space and the second space form the installation space.

[0012] Optionally, the upper cover and the lower shell are detachably connected via a connecting assembly.

[0013] Optionally, the connecting assembly includes a first locking member, a first mounting hole and a first fixing portion;

[0014] The first mounting hole is provided in one of the upper cover and the lower shell, the first fixing portion is provided in the other of the upper cover and the lower shell, and the first locking member passes through the first mounting hole and is connected to the first fixing portion to connect the upper cover and the lower shell.

[0015] Optionally, the upper cover and / or the lower shell are provided with reinforcing ribs.

[0016] Optionally, a second mounting hole corresponding to a second fixing portion of the charging control unit is formed on the mainboard body, so that a second locking member can pass through the second mounting hole and be connected to the second fixing portion to connect the mainboard unit and the charging control unit.

[0017] According to a second aspect of the present disclosure, a battery pack is provided. The battery pack includes a charging control unit and the battery management system provided in the first aspect of the present disclosure.

[0018] According to a third aspect of the present disclosure, there is also provided an electrical device, wherein the electrical device comprises the battery pack provided in the second aspect of the present disclosure.

[0019] Through the above technical solution, i.e. the battery management system disclosed in the present invention, by setting the first electrical connection part of the mainboard unit at the bottom of the mainboard body, when the mainboard unit is connected to the charging control unit, the first electrical connection part at the bottom of the mainboard body can be connected to the second electrical connection part on the charging control unit. Compared with the related art, the wiring harness can be omitted, and the space occupied by the side of the mainboard body can be saved, thereby improving the space utilization rate of the battery pack.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a structural diagram of a battery management system provided in some embodiments of the present disclosure.

[0023] Figure 2 is a disassembly diagram of a battery management system provided in some embodiments of the present disclosure.

[0024] Figure 3 This is a structural diagram of a battery management system from another perspective provided in some embodiments of the present disclosure.

[0025] Figure 4 is a cross-sectional view of a battery management system provided by some embodiments of the present disclosure.

[0026] Figure 5 It is a structural diagram of a mainboard unit of a battery management system provided in some embodiments of the present disclosure.

[0027] Figure 6 It is a structural diagram of the upper cover of the battery management system provided in some embodiments of the present disclosure.

[0028] Figure 7 It is a structural diagram of the lower shell of the battery management system provided in some embodiments of the present disclosure.

[0029] Figure 8 It is a structural diagram of the connection between the battery management system and the charging control unit provided in some embodiments of the present disclosure.

[0030] Description of Reference Numerals

[0031] 100-battery management system; 101-installation space; 101a-first space; 101b-second space; 110-mainboard unit; 111-mainboard body; 112-first electrical connection part; 113-signal connection part; 120-shell; 121-upper cover; 1211-first installation hole; 1212-first reinforcement rib; 1222-first fixing part; 1223-second reinforcement rib; 121a-first cover body; 121b-second cover body; 122-lower shell; 1221-opening; 130-first locking piece; 200-charging control unit; 210-second electrical connection part; 300-second locking piece. DETAILED DESCRIPTION

[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise stated, directional words such as "up, down, left, right, front, and back" generally refer to the up, down, left, right, front, and back in the corresponding drawings, that is, the up, down, left, right, front, and back of the vehicle; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the distance between the corresponding structure or the corresponding component and the distance between the corresponding structure and the corresponding component and the distance between the corresponding structure and the corresponding component and the corresponding component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0034] In order to achieve the above purpose, Figures 1 to 8 As shown, an embodiment of the present disclosure provides a battery management system 100 including a mainboard unit 110, the mainboard unit 110 including a mainboard body 111 and a first electrical connection portion 112 disposed at the bottom of the mainboard body 111 for connecting to a second electrical connection portion 210 of a charging control unit 200.

[0035] Through the above technical solution, that is, the battery management system 100 of the present disclosure, by setting the first electrical connection part 112 of the mainboard unit 110 at the bottom of the mainboard body 111, when the mainboard unit 110 is connected to the charging control unit 200, the first electrical connection part 112 at the bottom of the mainboard body 111 can be connected to the second electrical connection part 210 on the charging control unit 200. Compared with the related art, the wiring harness can be omitted, and the space occupied by the side of the mainboard body 111 can be saved, thereby improving the space utilization of the battery pack.

[0036] It is worth noting that the second electrical connection part 210 can be set on the top of the charging control unit 200. When the battery management system 100 is fixed on the top of the charging control unit 200, the first electrical connection part 112 located at the bottom of the main board body 111 can be electrically connected or communicated with the second electrical connection part 210 located at the top of the vehicle charging unit, that is, the connection is achieved in the up and down directions, and the space in the front and back and left and right directions is no longer occupied, so that there is more space in the battery pack to arrange the battery, thereby improving the space utilization in the battery pack.

[0037] It should be noted that the first electrical connection part 112 and the second electrical connection part 210 can be constructed in any suitable manner. For example, a plug-in structure can be adopted. For example, the first electrical connection part 112 is constructed as one of a plug-in female head and a plug-in male head, and the second electrical connection part 210 is constructed as the other of a plug-in female head and a plug-in male head, and the two can be connected by plugging.

[0038] In order to improve the sealing performance of the battery management system 100, optionally, the battery management system 100 also includes a shell 120 having an installation space 101, and the mainboard unit 110 is arranged in the installation space 101; the bottom of the shell 120 is formed with an opening 1221 for the first electrical connection part 112 to pass through.

[0039] By arranging the mainboard unit 110 in the housing 120 having the installation space 101, the first electrical connection portion 112 can be connected to the second electrical connection portion 210 after passing through the opening 1221 at the bottom of the housing 120 that communicates with the installation space 101. By arranging the housing 120, the mainboard unit 110 can be protected, and a certain degree of waterproof and dustproof function can be achieved, thereby improving the overall sealing performance.

[0040] In order to further improve the sealing performance between the first electrical connection part 112 at the opening 1221 and the side wall of the opening 1221. In some embodiments, a seal is provided around the opening 1221 and the first electrical connection part 112. The seal can be any suitable sealing component known in the relevant technology, for example, a sealing ring, a sealing ring or other rubber structure with sealing function.

[0041] In order to further adapt the reliability of the connection between the first electrical connection part 112 and the second electrical connection part 210, and avoid unstable connection due to manufacturing tolerance. In other embodiments, the first electrical connection part 112 is constructed as a floating plug male structure or a floating plug female structure. For example, the first electrical connection part 112 can be a plug male with a floating function, and the second electrical connection part 210 can be a common plug female or a plug female with a floating function. In addition, the first electrical connection part 112 can also be a plug female with a floating function, and the second electrical connection part 210 can be a common plug male or a plug male with a floating function.

[0042] Taking into account the different heights of the electrical components on the mainboard body 111, the electrical components with smaller heights can be arranged in one area, and the electrical components with larger heights can be arranged in another area. In some embodiments, the upper side wall or the lower side wall of the shell 120 can be constructed as a step-like structure. Corresponding to the installation space 101 inside the shell 120, a part of the installation space 101 has a larger height, which is used to accommodate the area corresponding to the electrical components with larger heights, and a part of the area has a smaller height, which is used to accommodate the area corresponding to the electrical components with larger heights.

[0043] In order to facilitate the installation of the mainboard body 111 of the mainboard unit 110 in the installation space 101. In some embodiments of the present disclosure, the housing 120 includes an upper cover 121 and a lower shell 122; the upper cover 121 includes a first cover portion 121a and a second cover portion 121b, wherein the plane where the first cover portion 121a is located is higher than the plane where the second cover portion 121b is located; the first cover portion 121a and the lower shell 122 enclose a first space 101a, and the second cover portion 121b and the lower shell 122 enclose a second space 101b, and the first space 101a and the second space 101b form the installation space 101.

[0044] Among them, the first space 101a surrounded by the first cover body 121a and the lower shell 122 can correspond to the area where the electrical components with larger height are located on the mainboard body 111, and the second space 101b surrounded by the second cover body 121b and the lower shell 122 can correspond to the area where the electrical components with smaller height are located on the mainboard body 111. Through the above-mentioned settings, the corresponding shell 120 structure can be designed according to the shape of the mainboard unit 110 or the height of the electrical components on the mainboard body 111, thereby further improving the space utilization.

[0045] The upper cover 121 and the lower shell 122 can be connected by any suitable structure. In some embodiments, the upper cover 121 and the lower shell 122 are detachably connected by a connecting assembly. The detachable connection is achieved by the connecting assembly, which is convenient for arranging the motherboard unit 110. On the other hand, it is also convenient for maintenance when a failure occurs in the motherboard unit 110.

[0046] The connecting structure can adopt any suitable structure. In some embodiments, the connecting component includes a first locking member 130, a first mounting hole 1211 and a first fixing portion 1222; the first mounting hole 1211 is provided in one of the upper cover 121 and the lower shell 122, and the first fixing portion 1222 is provided in the other of the upper cover 121 and the lower shell 122. The first locking member 130 passes through the first mounting hole 1211 and is connected to the first fixing portion 1222 to connect the upper cover 121 and the lower shell 122.

[0047] like Figure 2 As shown, the first locking member 130 can be configured as a screw, the first mounting hole 1211 can be a through hole formed on the upper cover 121, and the first fixing portion 1222 can be configured as a screw column on the lower cover, on which a screw hole is formed. When the upper cover 121 and the lower shell 122 are buckled together to enclose the accommodation space, the through hole is aligned with the screw hole on the screw column. At this time, the screw can pass through the through hole and then be connected to the screw column to achieve the connection between the two. It should be noted that the through hole and the screw column can also be respectively provided on the lower shell 122 and the upper cover 121, and the detachable connection between the two can also be achieved.

[0048] It is worth noting that the first locking member 130, the first mounting hole 1211 and the first fixing portion 1222 can all be multiple and arranged at intervals along the circumference of the housing 120, so as to achieve a more reliable connection. For example, when the housing 120 is a quadrilateral structure, the first locking member 130, the first mounting hole 1211 and the first fixing portion 1222 can all be four and located at the four corners of the quadrilateral structure.

[0049] It should be noted that the above-mentioned connection structure can also be in the form of a snap connection or a buckle connection, as long as it can achieve a detachable connection, and the present disclosure does not make any specific limitation.

[0050] In order to further improve the strength and rigidity of the upper cover 121 and the lower shell 122 and avoid deformation of the housing 120, in some embodiments, the upper cover 121 and / or the lower shell 122 are provided with reinforcing ribs. Among them, the first reinforcing rib 1212 can be provided on the upper cover 121 alone to improve the strength and rigidity of the upper cover 121, and the second reinforcing rib 1223 can be provided on the lower shell 122 alone to improve the strength and rigidity of the lower shell 122. Similarly, the first reinforcing rib 1212 can be provided on the upper cover 121 and the second reinforcing rib 1223 can be provided on the lower shell 122 to improve the strength and rigidity of both.

[0051] The upper cover 121 may be provided with a first reinforcing rib 1212. For example, the reinforcing rib may be connected to the screw column and then connected to the side edge of the housing 120 to improve the strength and rigidity of the connection. The lower housing 122 may also be provided with a mesh of reinforcing ribs on its large surface to improve the overall strength and rigidity. The above-mentioned reinforcing rib arrangement is exemplary, and the above-mentioned reinforcing rib may also be arranged at other parts of the upper cover 121 and the lower housing 122, which will not be described in detail here.

[0052] In order to fix the battery management system 100, in some embodiments, a second mounting hole corresponding to the second fixing part of the charging control unit 200 is also formed on the mainboard body 111, so that the second locking member 300 can pass through the second mounting hole and be connected to the second fixing part to connect the mainboard unit 110 and the charging control unit 200.

[0053] The top of the charging control unit 200 is formed with a second fixing portion, and the mainboard body 111 is formed with a second mounting hole, and the second locking member 300 can be passed through the second mounting hole and connected to the second fixing portion to fix the mainboard unit 110 of the battery management system 100 to the charging control unit 200. For example, the second locking member 300 is a screw, the second mounting hole is a through hole, and the second fixing portion is a screw hole, and the two are fixedly connected by connecting the screw to the through hole and the screw hole.

[0054] It is understandable that the second mounting holes and the second fixing portions mentioned above can be multiple and correspond one to one, and each second mounting hole and the second fixing portion are connected via a second locking member 300 .

[0055] It should be noted that when the battery management system 100 includes a shell 120, a fourth mounting hole for the second locking member 300 to pass through is formed at the bottom of the shell 120. The second locking member 300 can pass through the second mounting hole and the fourth mounting hole in sequence from top to bottom and then be installed in the second fixed part to connect the battery management system 100 and the charging control unit 200.

[0056] In some other embodiments, the mainboard unit 110 of the battery management system 100 further includes a signal connection portion 113 disposed on the mainboard body 111, which is used to connect to the battery core to realize signal collection or monitoring of the battery. The signal connection portion 113 can be constructed using a structure known in the relevant art, which will not be described in detail here.

[0057] The embodiment of the present disclosure provides a battery pack, which includes a charging control unit 200 and a battery management system 100 provided by the above embodiment of the present disclosure. Among them, the on-board charging control unit 200 is formed with a second electrical connection part 210 and a second fixing part, and the second electrical connection part 210 and the first electrical connection part 112 of the battery management system 100 can be electrically connected and communicated by plugging, so the battery pack also has all the advantages of the above battery management system 100.

[0058] The embodiments of the present disclosure further provide an electric device, which includes the battery pack of the embodiments of the present disclosure. Therefore, the electric device also has all the advantages of the above-mentioned battery pack.

[0059] The electric device includes a vehicle and an energy storage device, wherein the electric device can be a new energy vehicle or an energy storage device including a battery pack. It is understandable that when the electric device is a new energy vehicle, the charging control unit 200 is an on-board charging control unit 200.

[0060] The battery management system 100, battery pack and electric device disclosed in the present invention, by setting the first electrical connection part 112 of the mainboard unit 110 at the bottom of the mainboard body 111, when the mainboard unit 110 is connected to the charging control unit 200, the first electrical connection part 112 at the bottom of the mainboard body 111 can be connected to the second electrical connection part 210 on the charging control unit 200. Compared with the related art, the wiring harness can be omitted, and the space occupied by the side of the mainboard body 111 can be saved, thereby improving the space utilization of the battery pack.

[0061] Furthermore, by providing the housing 120, the mainboard unit 110 is protected and has a certain degree of waterproof and dustproof function, and is connected to the entire vehicle through respective fixing methods.

[0062] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0064] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery management system, comprising a mainboard unit, characterized in that: The mainboard unit includes a mainboard body and a first electrical connection portion disposed at the bottom of the mainboard body and used for connecting with a second electrical connection portion of a charging control unit.

2. The battery management system according to claim 1, characterized in that: The battery management system further comprises a housing having an installation space, and the mainboard unit is arranged in the installation space; An opening is formed at the bottom of the housing for the first electrical connection portion to pass through.

3. The battery management system according to claim 2, characterized in that: A sealing member is provided around the opening and the first electrical connection portion; and / or The first electrical connection portion is constructed as a floating plug-in male connector structure or a floating plug-in female connector structure.

4. The battery management system according to claim 2, characterized in that: The housing comprises an upper cover and a lower shell; The upper cover comprises a first cover body portion and a second cover body portion, wherein the plane where the first cover body portion is located is higher than the plane where the second cover body portion is located; The first cover portion and the lower shell enclose a first space, the second cover portion and the lower shell enclose a second space, and the first space and the second space form the installation space.

5. The battery management system according to claim 4, characterized in that: The upper cover and the lower shell are detachably connected via a connecting assembly.

6. The battery management system according to claim 5, characterized in that: The connecting assembly includes a first locking member, a first mounting hole and a first fixing portion; The first mounting hole is provided in one of the upper cover and the lower shell, the first fixing portion is provided in the other of the upper cover and the lower shell, and the first locking member passes through the first mounting hole and is connected to the first fixing portion to connect the upper cover and the lower shell.

7. The battery management system according to any one of claims 4 to 6, characterized in that: The upper cover and / or the lower shell are provided with reinforcing ribs.

8. The battery management system according to claim 1, characterized in that: The mainboard body is also formed with a second mounting hole corresponding to the second fixing portion of the charging control unit, so that the second locking member can pass through the second mounting hole and then be connected to the second fixing portion to connect the mainboard unit and the charging control unit.

9. A battery pack, characterized in that: The battery pack comprises a charging control unit and a battery management system as claimed in any one of claims 1 to 8.

10. An electrical device, characterized in that: The electrical equipment comprises the battery pack according to claim 9.

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