Battery management system, distribution box, battery pack and electric equipment

Abstract

The utility model relates to a battery management system, a distribution box, a battery pack and electric equipment, the battery management system comprises at least two functional modules and at least one connector, each functional module comprises a circuit board and a component arranged on the circuit board, every two adjacent functional modules are stacked in the thickness direction of the functional modules and are electrically connected through a connector. According to the technical scheme, when the battery management system is assembled, the electric connection of two adjacent functional modules can be realized only through the connector, so that an operator can quickly assemble the battery management system more conveniently, and when a certain functional module is overhauled to have a problem, the battery management system can be quickly assembled. And the functional module can be directly repaired or integrally replaced, so that the maintenance period of the battery management system is greatly shortened.

Description

Technical Field

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

[0002] BMS (Battery Management System) consists of contactors, fuses, pre-charge resistors, shunts, terminals, connectors and other components. The above components collect, monitor and control information of electrical components through wiring harnesses, and exchange information with VCU (Vehicle Control Unit) through wiring harnesses and connectors. The existing solution has many wiring harnesses, terminals and connection links, which makes the overall structure of the battery management system more complicated. On the one hand, it is not convenient to assemble the above battery management system, and on the other hand, it is not convenient to inspect and maintain the battery management module. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery management system, a distribution box, a battery pack and an electric device to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned objectives, the first aspect of the present disclosure provides a battery management system, including at least two functional modules and at least one connector, each functional module including a circuit board and components arranged on the circuit board, and two adjacent functional modules are stacked along their own thickness direction and electrically connected through the connector.

[0005] Optionally, the at least two functional modules include a first electrical interface module, and the first electrical interface module is one of a low-voltage electrical interface and a high-voltage electrical interface.

[0006] Optionally, the at least two functional modules include a second electrical interface module, and the second electrical interface module is the other of a low-voltage electrical interface and a high-voltage electrical interface.

[0007] Optionally, the at least two functional modules include an intermediate module, the intermediate module is arranged between the first electrical interface module and the second electrical interface module, and the first electrical interface module and the second electrical interface module are electrically connected to the intermediate module through the connector, respectively.

[0008] Optionally, the intermediate module includes at least one of a low-voltage electrical management module, a battery management control module, an electrical system isolation module and a battery status monitoring module.

[0009] Optionally, the connector includes a connecting piece and a connecting mating piece, one of the two adjacent functional modules is provided with the connecting piece, and the other of the two adjacent functional modules is provided with the connecting mating piece, and the connecting piece arranged on the two adjacent functional modules is arranged relative to the connecting mating piece and is electrically connected by plugging.

[0010] Optionally, the at least two functional modules include a first electrical interface module, a second electrical interface module, and an intermediate module disposed between the first electrical interface module and the second electrical interface module;

[0011] The first electrical interface module has a first surface facing the intermediate module, and the connecting member is arranged on the first surface of the first electrical interface module and is electrically connected to a circuit board of the first electrical interface module;

[0012] The second electrical interface module has a first surface facing the middle module, and the connecting fitting is arranged on the first surface of the second electrical interface module and is electrically connected to a circuit board of the second electrical interface module;

[0013] The intermediate module has a first surface facing the first electrical interface module and a second surface facing the second electrical interface module, the connecting fitting is arranged on the first surface of the intermediate module, and the connecting member is arranged on the second surface of the intermediate module;

[0014] The connecting piece arranged on the first surface of the first electrical interface module is arranged opposite to the connecting fitting arranged on the first surface of the intermediate module and can be plugged in and electrically connected. The connecting fitting arranged on the first surface of the second electrical interface module is arranged opposite to the connecting fitting arranged on the second surface of the intermediate module and can be plugged in and electrically connected.

[0015] Optionally, the connecting fittings arranged on the first surface of the intermediate module are staggered with the connecting fittings arranged on the second surface of the intermediate module.

[0016] Optionally, the projection size of each functional module in the thickness direction is consistent.

[0017] Optionally, the battery management system also includes a shell, the interior of the shell has a cavity for placing at least two of the functional modules, and the shape and size of the outer circumference of the functional module match the shape and size of the inner wall of the shell, so that at least two of the functional modules can be stacked in the cavity along their own thickness direction.

[0018] Optionally, the at least two functional modules include a first electrical interface module and a second electrical interface module; a first opening and a second opening are respectively formed on two opposite side walls of the housing;

[0019] The first electrical interface module is a low-voltage electrical interface module, the low-voltage electrical interface module comprises a low-voltage electrical interface electrically connected to a circuit board of the low-voltage electrical interface module, and the low-voltage electrical interface is disposed in the first opening;

[0020] The second electrical interface module is a high-voltage electrical interface module, which includes a high-voltage electrical interface electrically connected to a circuit board of the high-voltage electrical interface module, and the high-voltage electrical interface is inserted into the second opening.

[0021] Optionally, the outer shell includes a shell and a shell cover, the interior of the shell has the cavity and an opening connected to the cavity, the shell cover is detachably sealed on the opening, one of the first opening and the second opening is formed on the shell cover, and the other of the first opening and the second opening is formed on the bottom wall of the shell.

[0022] Optionally, the shell further includes a card block and a card slot, a card block is formed on one of the shell and the shell cover, and a card slot is formed on the other of the shell and the shell cover, and the card block is used to be engaged in the card slot when the shell cover covers the opening of the shell.

[0023] Optionally, the housing further comprises a positioning member, wherein the positioning member is arranged on the inner wall of the housing and extends in a direction away from the bottom wall of the housing;

[0024] The edge of each functional module is provided with a locking piece matching the positioning piece structure, and the locking piece is connected to the positioning piece to position the functional module in the housing.

[0025] Optionally, the positioning member is a protrusion on the inner wall of the shell protruding toward the cavity, and the clamping member is a notch penetrating the edge of the functional module along its own thickness, and the positioning member is sequentially inserted into the notch of each functional module to enable the functional module to be clamped with the shell;

[0026] Alternatively, the positioning member is a positioning groove on the inner wall of the shell extending in a direction away from the bottom wall of the shell, and the locking member is a protrusion arranged on the edge of the functional module, and each of the protrusions is sequentially inserted into the positioning groove to enable the functional module to be locked with the shell.

[0027] A second aspect of the present disclosure provides a distribution box, comprising the battery management system as described above.

[0028] A third aspect of the present disclosure provides a battery pack, comprising the battery management system or distribution box as described above.

[0029] A fourth aspect of the present disclosure provides an electric device, comprising the distribution box or battery pack as described above.

[0030] Through the above technical solution, the battery management system includes multiple functional modules, and each functional module is provided with a circuit board and components connected to the circuit board. In this way, when assembling the above battery management system, it is only necessary to stack the functional modules along their own thickness direction and realize the electrical connection between two adjacent functional modules through a connector. Therefore, it is more convenient for operators to quickly assemble the battery management system, which can effectively improve the assembly efficiency.

[0031] In addition, when the battery management system is inspected or maintained, because each functional module is relatively independently set, on the one hand, the maintenance personnel can quickly find the functional module corresponding to the problem and repair it, which reduces the difficulty of inspection and can effectively improve the inspection efficiency; on the other hand, when a problem is found in a functional module, the functional module can be directly replaced as a whole, thereby greatly shortening the maintenance cycle of the battery management system. In addition, when multiple functional modules are stacked along the thickness direction, they have a smaller bottom surface area, so they can effectively reduce the space occupied, which is more conducive to the miniaturization of the battery management system.

[0032] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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:

[0034] Figure 1 is an exploded schematic diagram of a battery management system provided by an exemplary embodiment of the present disclosure;

[0035] Figure 2 is a three-dimensional schematic diagram of a battery management system provided by an exemplary embodiment of the present disclosure, wherein a functional module is installed in a cavity inside a housing.

[0036] Description of Reference Numerals

[0037] 1-battery management system; 10-functional module; 11-circuit board; 12-components; 13-gap; 20-first electrical interface module; 200-low-voltage electrical interface module; 21-low-voltage electrical interface; 30-second electrical interface module; 300-high-voltage electrical interface module; 40-intermediate module; 41-low-voltage electrical management module; 42-battery management control module; 43-electrical system isolation module; 44-battery status monitoring module; 50-connector; 51-connecting part; 52-connecting mating part; 60-housing; 61-cavity; 62-shell; 63-shell cover; 630-first opening; 64-block; 65-slot; 66-positioning part. DETAILED DESCRIPTION

[0038] 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.

[0039] In the present disclosure, unless otherwise stated, the directional words used are defined based on the drawing directions shown in the accompanying drawings and are only for the convenience of describing the present disclosure and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on the present disclosure. The terms "inside and outside" refer to the inside and outside of the corresponding structural contours.

[0040] In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another element, and do not have order or importance. In addition, in the description with reference to the drawings, the same number in different drawings represents the same element.

[0041] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0042] Since the battery management system is designed with multiple components such as contactors, fuses, pre-charge resistors, shunts, terminals, connectors, etc., when connecting and assembling the above components, the pins, connectors, bolts, terminals, and wiring harnesses that connect the components are crisscrossed, which increases the difficulty of assembling the battery management system and is not convenient for subsequent inspection and maintenance of the battery management system. Based on this, reference Figure 1 to Figure 2As shown, the first aspect of the present disclosure provides a battery management system, including at least two functional modules 10 and at least one connector 50, each functional module 10 includes a circuit board 11 and components 12 arranged on the circuit board 11, and two adjacent functional modules 10 are stacked along their own thickness direction and electrically connected through the connector 50.

[0043] Through the above technical solution, the battery management system 1 includes a plurality of functional modules 10, and each functional module 10 is provided with a circuit board 11 and components 12 connected to the circuit board 11, that is, each functional module 10 can realize different functions. In this way, when assembling the above battery management system 1, it is only necessary to use a connector to realize the electrical connection of two adjacent functional modules 10, so it is more convenient for operators to quickly assemble the battery management system 1, which can effectively improve the assembly efficiency.

[0044] In addition, when the battery management system 1 is inspected or maintained, because each functional module 10 is relatively independently arranged, on the one hand, the maintenance personnel can quickly find the functional module 10 corresponding to the problem and repair it, which reduces the difficulty of inspection and can effectively improve the inspection efficiency; on the other hand, when a problem is found in a functional module 10, the functional module 10 can be directly replaced as a whole, thereby greatly shortening the maintenance cycle of the battery management system 1. In addition, when multiple functional modules 10 are stacked in the thickness direction, they have a smaller bottom surface area, so they can effectively reduce the space occupied, which is more conducive to the miniaturization of the battery management system 1.

[0045] In the present disclosure, there is no restriction on the number of connectors connecting two adjacent functional modules 10. For example, in an exemplary embodiment provided in the present disclosure, two adjacent functional modules 10 can be connected through two functional modules 10. The two functional modules 10 are symmetrically arranged on both sides of the circuit board. On the premise of achieving electrical connection, the stability of the mechanical connection process of the two functional modules 10 can be further improved.

[0046] In addition, in order to facilitate the connection between the above-mentioned functional modules 10 and the battery energy distribution unit, in the present disclosure, at least two functional modules 10 may include a first electrical interface module 20. The present disclosure does not limit the specific type and function of the above-mentioned first electrical interface module 20. For example, in an exemplary embodiment provided in the present disclosure, the first electrical interface module 20 may be one of a low-voltage electrical interface and a high-voltage electrical interface. In addition, at least two functional modules 10 may also include a second electrical interface module 30, and the second electrical interface module 30 is the other of the low-voltage electrical interface and the high-voltage electrical interface. In this way, the above-mentioned first electrical interface module 20 and the second electrical interface module 30 (i.e., the low-voltage electrical interface and the high-voltage electrical interface) can be quickly electrically connected to the adjacent functional modules 10 through the connector 50, thereby facilitating the assembly between the first electrical interface module 20, the second electrical interface module 30 and the battery energy distribution unit.

[0047] At least two functional modules 10 include an intermediate module 40, which is arranged between the first electrical interface module 20 and the second electrical interface module 30, and the first electrical interface module 20 and the second electrical interface module 30 are electrically connected to the intermediate module 40 through connectors 50. In this way, the connection with the battery energy distribution unit can be achieved through the first electrical interface module 20 and the second electrical interface module 30, and the intermediate module 40 arranged between the first electrical interface module 20 and the second electrical interface module 30 can be electrically connected to the first electrical interface module 20 and the second electrical interface module 30 through the connector 50. In this way, when the intermediate module 40 fails, the intermediate module 40 can be directly removed from between the first electrical interface module 20 and the second electrical interface module 30 for maintenance or replacement, which is more convenient for operators to operate.

[0048] In an exemplary embodiment provided by the present disclosure, the intermediate module 40 may include at least one of a low-voltage electrical management module 41, a battery management control module 42, an electrical system isolation module 43, and a battery status monitoring module 44. Different functional modules 10 can implement different functions, so that when a problem or failure occurs in the battery management system 1 of the present disclosure, maintenance personnel can quickly find the functional module 10 corresponding to the problem, repair or replace the corresponding functional module 10, and improve maintenance efficiency.

[0049] It should be noted that the present disclosure does not impose any restrictions on the stacking order of the above-mentioned functional modules 10. Designers can adaptively adjust the stacking order of the above-mentioned functional modules 10 according to specific circumstances. For example, in an exemplary embodiment provided in the present disclosure, the first electrical interface module 20, the low-voltage electrical management module 41, the battery management control module 42, the electrical system isolation module 43, the battery status monitoring module 44 and the second electrical interface module 30 can be stacked in sequence from top to bottom.

[0050] In addition, the present disclosure does not limit the specific structure of the above-mentioned connector 50, as long as the electrical connection between the two adjacent functional modules 10 can be achieved. For example, in the present disclosure, the connector 50 includes a connector 51 and a connector fitting 52. One of the two adjacent functional modules 10 is provided with a connector 51, and the other of the two adjacent functional modules 10 is provided with a connector fitting 52. The connector 51 and the connector fitting 52 provided on the two adjacent functional modules 10 are arranged opposite to each other and are electrically connected by plugging. In this way, the connection and disconnection of the two adjacent functional modules 10 can be achieved through a simple plug-in and pull-out action, and when the connector 51 and the connector fitting 52 are plugged in, the connection and fixation of the two adjacent functional modules 10 can be achieved without the need to provide fasteners.

[0051] Alternatively, in one embodiment provided in the present disclosure, the above-mentioned connector 50 can be a plug-in terminal, which includes two parts (i.e., a connecting piece 51 and a connecting mating piece 52). Alternatively, in another exemplary embodiment provided in the present disclosure, the above-mentioned connector 50 can also include two matching wires or quick-connect connectors.

[0052] Optionally, in an embodiment where at least two functional modules 10 include a first electrical interface module 20, a second electrical interface module 30, and an intermediate module 40 disposed between the first electrical interface module 20 and the second electrical interface module 30, the first electrical interface module 20 has a first surface facing the intermediate module 40, and the connector 51 is disposed on the first surface of the first electrical interface module 20 and is electrically connected to the circuit board 11 of the first electrical interface module 20; the second electrical interface module 30 has a first surface facing the intermediate module 40, and the connector 52 is disposed on the first surface of the second electrical interface module 30 and is electrically connected to the circuit board 11 of the second electrical interface module 30. The circuit board 11 is electrically connected; the intermediate module 40 has a first surface facing the first electrical interface module 20 and a second surface facing the second electrical interface module 30, the connecting fitting 52 is arranged on the first surface of the intermediate module 40, and the connecting fitting 51 is arranged on the second surface of the intermediate module 40; the connecting fitting 51 arranged on the first surface of the first electrical interface module 20 is arranged opposite to the connecting fitting 52 arranged on the first surface of the intermediate module 40 and can be plugged in and electrically connected, and the connecting fitting 52 arranged on the first surface of the second electrical interface module 30 is arranged opposite to the connecting fitting 51 arranged on the second surface of the intermediate module 40 and can be plugged in and electrically connected.

[0053] In this way, the electrical connection and structural connection between the first electrical interface module 20 and the intermediate module 40 can be achieved through the connector 51 arranged on the first surface of the first electrical interface module 20 and the connector mating piece 52 arranged on the first surface of the intermediate module 40, and the electrical connection and structural connection between the second electrical interface module 30 and the intermediate module 40 can be achieved through the matching of the connector mating piece 52 arranged on the Durr surface of the second electrical interface module 30 and the connector 51 arranged on the second surface of the intermediate module 40, thereby achieving the structural connection and electrical connection between the first electrical interface module 20, the intermediate module 40 and the second electrical interface module 30.

[0054] For the implementation scheme in which the intermediate module 40 includes a low-voltage electrical management module 41, a battery management control module 42, an electrical system isolation module 43 and a battery status monitoring module 44, the low-voltage electrical management module 41 has a first surface facing the first electrical interface module 20 and a second surface facing the second electrical interface module 30, and the connecting fitting 52 is arranged on the first surface of the low-voltage electrical management module 41, and the connecting fitting 51 is arranged on the second surface of the low-voltage electrical management module 41; similarly, the battery management control module 42, the electrical system isolation module 43 and the battery status monitoring module 44 also respectively have a first surface facing the first electrical interface module 20 and a second surface facing the second electrical interface module 30, and the battery management control module 42, the electrical system isolation module 43 and the battery status monitoring module 44 are all provided with the above-mentioned connecting fitting 52 on their first surfaces, and the battery management control module 42, the electrical system isolation module 43 and the battery status monitoring module 44 are all provided with the above-mentioned connecting fitting 51 on their second surfaces, and adjacent functional modules 10 can be structurally and electrically connected through the above-mentioned connecting fitting 51 and the connecting fitting 52.

[0055] In the present disclosure, there is no restriction on the number of connectors 51 provided on two adjacent functional modules 10. For example, in an exemplary embodiment provided in the present disclosure, two of the above-mentioned connectors 50 may be formed between the first electrical interface module 20 and the intermediate module 40. For an embodiment in which the intermediate module 40 includes a low-voltage electrical management module 41, a battery management control module 42, an electrical system isolation module 43 and a battery status monitoring module 44, two adjacent functional modules 10 in the above-mentioned functional modules 10 may also be provided with two connectors 50. For the intermediate module 40 (i.e., the battery status monitoring module 44) connected to the second electrical interface module 30, the second electrical interface module 30 and the battery status monitoring module 44 may be electrically connected via four connectors 50, i.e., four connectors 51 are formed on the second surface of the battery status monitoring module 44, and four connecting fittings 52 are formed on the first surface of the second electrical interface module 30, and each connector 51 is provided in a one-to-one correspondence with each connecting fitting 52.

[0056] Here, it should be noted that by setting different types of connectors 50 between the functional modules 10, functions such as communication and sampling can be realized between two adjacent functional modules 10. Compared with other functional modules 10 connected through two connectors 50, the second electrical interface module 30 and the battery status monitoring module 44 connected through four connectors 50 can also realize charging and discharging control, energy monitoring and other functions.

[0057] Optionally, the connection fittings 52 disposed on the first surface of the intermediate module 40 are staggered with the connection fittings 51 disposed on the second surface of the intermediate module 40. Since the connection fittings 52 disposed on the first surface of the intermediate module 40 are staggered with the connection fittings 51 disposed on the second surface of the intermediate module 40, that is, the connection fittings 52 and the connection fittings 51 are disposed on different sides of the intermediate module 40, it is possible to avoid interference or interference between the connection fittings 51 and 52 when assembling the connection fittings 51 or 52.

[0058] Optionally, the projection size of each functional module 10 in the thickness direction is consistent. On the one hand, functional modules 10 with consistent sizes are more convenient for modular production, and on the other hand, precisely because the projection size of each functional module 10 in the thickness direction is consistent, when multiple functional modules 10 are stacked together, they can occupy a smaller space, thereby improving the integration of the battery management system 1.

[0059] Optionally, the battery management system 1 further includes a shell 60, the inside of which has a cavity 61 for placing at least two functional modules 10, and the shape and size of the outer peripheral surface of the functional module 10 match the shape and size of the inner wall of the shell 60, so that at least two functional modules 10 are stacked in the cavity 61 along their own thickness direction. The shell 60 can protect the functional module 10, and precisely because the shape and size of the functional module 10 match the shape and size of the inner wall of the shell 60, it is convenient to place at least two of the above-mentioned functional modules 10 into the cavity 61, which can minimize the waste of space in the cavity 61.

[0060] In the embodiment where at least two functional modules 10 include a first electrical interface module 20 and a second electrical interface module 30, a first opening 630 and a second opening (not shown) are respectively formed on two opposite side walls of the housing 60; the first electrical interface module 20 is a low-voltage electrical interface module 200, which includes a low-voltage electrical interface 21 electrically connected to the circuit board 11 of the low-voltage electrical interface module 200, and the low-voltage electrical interface 21 is arranged in the first opening 630. The second electrical interface module 30 is a high-voltage electrical interface module 300, which includes a high-voltage electrical interface (not shown) electrically connected to the circuit board 11 of the high-voltage electrical interface module 300, and the high-voltage electrical interface is arranged in the second opening; the first opening 630 formed on the housing 60 can allow the low-voltage electrical interface 21 to pass through, and the second opening formed on the housing 60 can allow the high-voltage electrical interface to pass through, thereby achieving electrical connection with the relevant structures of the battery pack.

[0061] It should be noted that the present disclosure does not limit the specific types of the first electrical interface module 20 and the second electrical interface module 30 mentioned above. For example, one of the first electrical interface module 20 and the second electrical interface module 30 may be a medium-voltage electrical interface module, and the other may be a high-voltage electrical interface module; or, one of the first electrical interface module 20 and the second electrical interface module 30 may be a low-voltage electrical interface module, and the other may be a medium-voltage electrical interface module. The specific adjustments can be made according to actual needs.

[0062] Furthermore, for implementations in which each functional module 10 has a uniform size, a plurality of stacked functional modules 10 can also be loaded into the cavity 61 with a smaller volume, thereby reducing the volume occupied in the cavity 61 and improving the integration of the battery management system 1 .

[0063] Optionally, the housing 60 includes a shell 62 and a shell cover 63, the shell 62 has a cavity 61 and an opening connected to the cavity 61, the shell cover 63 is detachably sealed to the opening, one of the first opening 630 and the second opening is formed on the shell cover 63, and the other of the first opening 630 and the second opening is formed on the bottom wall of the shell 62. Since the first opening 630 and the second opening are respectively located on the shell cover 63 and the bottom wall of the shell 62, there is a certain distance between the two, so that the high-voltage electrical interface and the low-voltage electrical interface 21 can be prevented from interfering with each other when connected to the battery pack, thereby reducing the potential safety hazards during the operation of the battery management system 1.

[0064] The present disclosure does not limit the detachable manner of the above-mentioned shell 62 and shell cover 63. For example, in an exemplary embodiment provided by the present disclosure, the shell 60 may further include a clamping block 64 and a clamping slot 65. The clamping block 64 is formed on one of the shell 62 and the shell cover 63, and the clamping slot 65 is formed on the other of the shell 62 and the shell cover 63. The clamping block 64 is used to be clamped in the clamping slot 65 when the shell cover 63 covers the opening of the shell 62. The detachable connection between the shell 62 and the shell cover 63 is achieved by clamping, the structure is simple, and the shell 62 and the shell cover 63 can be disassembled without the help of a disassembly tool.

[0065] In another exemplary embodiment provided by the present disclosure, an external thread may be formed on the outer surface of the shell 62, and an internal thread may be formed on the inner surface of the shell cover 63, and the shell 62 and the shell cover 63 are connected by threads.

[0066] Optionally, the housing 60 may further include a positioning member 66, which is disposed on the inner wall of the housing 62 and extends in a direction away from the bottom wall of the housing 62; the edge of each functional module 10 is provided with a positioning member that matches the positioning member 66 structure, and the positioning member is connected to the positioning member 66 to position the functional module 10 in the housing 60. In this way, after the functional module 10 is loaded into the cavity 61, the positioning member 66 can be sequentially engaged with the engaging member formed on the edge of each functional module 10, thereby achieving the positioning and limiting effect on each functional module 10, so as to improve the stability of each functional module 10 in the cavity 61.

[0067] In the present disclosure, the specific structure and clamping method of the above-mentioned positioning member 66 and the clamping member are not limited. For example, in an exemplary embodiment provided in the present disclosure, optionally, the positioning member 66 can be a protrusion on the inner wall of the shell 62 that protrudes toward the cavity 61, and the clamping member can be a notch 13 that penetrates the edge of the functional module 10 along its own thickness. The positioning member 66 is sequentially inserted into the notch 13 of each functional module 10 to enable the functional module 10 to be clamped with the shell 62; in this way, in the process of installing the above-mentioned functional module 10 in the cavity 61, the protrusion formed on the inner wall of the shell 62 can be sequentially inserted into the notch 13 of each functional module 10 to achieve the restriction and guiding effect on each functional module 10.

[0068] Alternatively, in another exemplary embodiment provided by the present disclosure, the positioning member 66 may be a positioning groove extending on the inner wall of the housing 62 in a direction away from the bottom wall of the housing 62, and the locking member may be a protrusion provided on the edge of the functional module 10, and each protrusion is sequentially inserted into the positioning groove to enable the functional module 10 to be engaged with the housing 62. Similarly, in this way, in the process of installing the above-mentioned functional module 10 in the cavity 61, the protrusion formed on each functional module 10 can be embedded in the positioning groove formed on the inner wall of the housing 62, and under the limiting effect of the positioning groove, the limiting and guiding effects on each functional module 10 are achieved.

[0069] A second aspect of the present disclosure provides a distribution box, comprising the battery management system 1 as described above.

[0070] A third aspect of the present disclosure provides a battery pack, comprising the battery management system 1 or distribution box as described above.

[0071] The fourth aspect of the present disclosure provides an electric device, including the above distribution box or battery pack. The battery pack and the vehicle have all the beneficial effects of the above distribution box and battery management system 1, which are not described in detail in the present disclosure. The above electric device can be any device with power demand, such as a vehicle, an energy storage cabinet, an aircraft, etc., and the present disclosure does not make any specific restrictions on this.

[0072] 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.

[0073] 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.

[0074] 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, characterized in that: It comprises at least two functional modules and at least one connector, each functional module comprises a circuit board and components arranged on the circuit board, and two adjacent functional modules are stacked along their own thickness direction and electrically connected through the connector.

2. The battery management system according to claim 1, characterized in that: The at least two functional modules include a first electrical interface module, which is one of a low voltage electrical interface and a high voltage electrical interface.

3. The battery management system according to claim 2, characterized in that: The at least two functional modules include a second electrical interface module, which is the other of a low voltage electrical interface and a high voltage electrical interface.

4. The battery management system according to claim 3, characterized in that: The at least two functional modules include an intermediate module, which is disposed between the first electrical interface module and the second electrical interface module, and the first electrical interface module and the second electrical interface module are electrically connected to the intermediate module through the connector, respectively.

5. The battery management system according to claim 4, characterized in that: The intermediate module includes at least one of a low voltage electrical management module, a battery management control module, an electrical system isolation module, and a battery status monitoring module.

6. The battery management system according to claim 1, characterized in that: The connector includes a connecting piece and a connecting mating piece. One of the two adjacent functional modules is provided with the connecting piece, and the other of the two adjacent functional modules is provided with the connecting mating piece. The connecting piece arranged on the two adjacent functional modules is arranged opposite to the connecting mating piece and is electrically connected by plugging.

7. The battery management system according to claim 6, characterized in that: The at least two functional modules include a first electrical interface module, a second electrical interface module, and an intermediate module disposed between the first electrical interface module and the second electrical interface module; The first electrical interface module has a first surface facing the intermediate module, and the connecting member is arranged on the first surface of the first electrical interface module and is electrically connected to a circuit board of the first electrical interface module; The second electrical interface module has a first surface facing the middle module, and the connecting fitting is arranged on the first surface of the second electrical interface module and is electrically connected to a circuit board of the second electrical interface module; The intermediate module has a first surface facing the first electrical interface module and a second surface facing the second electrical interface module, the connecting fitting is arranged on the first surface of the intermediate module, and the connecting member is arranged on the second surface of the intermediate module; The connecting piece arranged on the first surface of the first electrical interface module is arranged opposite to the connecting fitting arranged on the first surface of the intermediate module and can be plugged in and electrically connected. The connecting fitting arranged on the first surface of the second electrical interface module is arranged opposite to the connecting fitting arranged on the second surface of the intermediate module and can be plugged in and electrically connected.

8. The battery management system according to claim 7, characterized in that: The connecting fittings arranged on the first surface of the intermediate module are staggered with the connecting fittings arranged on the second surface of the intermediate module.

9. The battery management system according to any one of claims 1 to 8, characterized in that: The projection size of each functional module in the thickness direction is consistent.

10. The battery management system according to any one of claims 1 to 8, characterized in that: The battery management system also includes a shell, the interior of the shell has a cavity for placing at least two of the functional modules, the shape and size of the outer circumference of the functional module match the shape and size of the inner wall of the shell, so that at least two of the functional modules can be stacked in the cavity along their own thickness direction.

11. The battery management system according to claim 10, characterized in that: The at least two functional modules include a first electrical interface module and a second electrical interface module; a first opening and a second opening are respectively formed on two opposite side walls of the housing; The first electrical interface module is a low-voltage electrical interface module, the low-voltage electrical interface module comprises a low-voltage electrical interface electrically connected to a circuit board of the low-voltage electrical interface module, and the low-voltage electrical interface is disposed in the first opening; The second electrical interface module is a high-voltage electrical interface module, which includes a high-voltage electrical interface electrically connected to a circuit board of the high-voltage electrical interface module, and the high-voltage electrical interface is inserted into the second opening.

12. The battery management system according to claim 11, characterized in that: The shell includes a shell and a shell cover, the interior of the shell has the cavity and an opening connected to the cavity, the shell cover is detachably sealed on the opening, one of the first opening and the second opening is formed on the shell cover, and the other of the first opening and the second opening is formed on the bottom wall of the shell.

13. The battery management system according to claim 12, characterized in that: The shell also includes a card block and a card slot. A card block is formed on one of the shell and the shell cover, and a card slot is formed on the other of the shell and the shell cover. The card block is used to be engaged in the card slot when the shell cover covers the opening of the shell.

14. The battery management system according to claim 12, characterized in that: The housing further comprises a positioning member, which is arranged on the inner wall of the housing and extends in a direction away from the bottom wall of the housing; The edge of each functional module is provided with a locking piece matching the positioning piece structure, and the locking piece is connected to the positioning piece to position the functional module in the housing.

15. The battery management system according to claim 14, characterized in that: The positioning member is a convex block on the inner wall of the shell protruding toward the cavity, and the clamping member is a notch penetrating the edge of the functional module along its own thickness, and the positioning member is sequentially inserted into the notch of each functional module to enable the functional module to be clamped with the shell; Alternatively, the positioning member is a positioning groove on the inner wall of the shell extending in a direction away from the bottom wall of the shell, and the locking member is a protrusion arranged on the edge of the functional module, and each of the protrusions is sequentially inserted into the positioning groove to enable the functional module to be locked with the shell.

16. A distribution box, characterized in that: A battery management system comprising any one of claims 1-15.

17. A battery pack, characterized in that: A battery management system comprising any one of claims 1-15 or a distribution box comprising claim 16.

18. An electric device, characterized in that: Including the distribution box as described in claim 16 or the battery pack as described in claim 17.

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