Power distribution device, battery device and power utilization device

Abstract

The utility model belongs to the technical field of power distribution, and particularly relates to a power distribution device, a battery device and a power utilization device, the power distribution device comprises a first circuit board, a second circuit board and a flexible electric connector, the first circuit board comprises a first board body and a first electric connector arranged on the first board body, and the first board body is electrically connected with the first electric connector; the second circuit board comprises a second board body and a second electric connecting piece arranged on the second board body, and the second board body is electrically connected with the second electric connecting piece; the first circuit board is a battery control board, and the second circuit board is a battery monomer sampling circuit board; the two ends of the flexible electric connecting piece are electrically connected with the first electric connecting piece and the second electric connecting piece respectively, and bending deformation of the flexible electric connecting piece can make up for installation errors of the first circuit board, the second circuit board, the first electric connecting piece or the second electric connecting piece. Therefore, the flexible electric connecting piece can be electrically connected with the first electric connecting piece and the second electric connecting piece stably and reliably, and the use reliability of the power distribution device can be improved.

Description

Technical Field

[0001] This application belongs to the field of power distribution technology, and in particular relates to a power distribution device, a battery device, and a power consumption device. Background Technology

[0002] The power distribution unit is an important component of the battery device. It can manage and distribute the electrical energy of the battery device, and can also collect the operating information of the individual battery cells in the battery device in real time, so as to monitor the operating status of the battery device in real time.

[0003] Power distribution equipment typically contains multiple circuit boards, connected to each other via fixed plug-in adapters. These adapters require precise positioning of both the circuit boards and the adapters themselves. Significant installation errors in either the circuit board or the adapter can lead to poor contact or excessive stress between terminals, resulting in poor electrical connections between the circuit boards and ultimately, adapter failure. This negatively impacts the reliability of electrical connections between circuit boards.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this application is to provide a power distribution device, a battery device, and a power consumption device, including but not limited to those that can improve the reliability of electrical connections between circuit boards within the power distribution device.

[0006] The technical solution adopted in the embodiments of this application is:

[0007] In a first aspect, a power distribution device is provided for a battery device. The power distribution device includes a first circuit board, a second circuit board, and a flexible electrical connector. The first circuit board includes a first plate body and a first electrical connector disposed on the first plate body, and the first plate body is electrically connected to the first electrical connector. The second circuit board includes a second plate body and a second electrical connector disposed on the second plate body, and the second plate body is electrically connected to the second electrical connector. One end of the flexible electrical connector is electrically connected to the first electrical connector, and the other end of the flexible electrical connector is electrically connected to the second electrical connector. The first circuit board is a battery control board, and the second circuit board is a battery cell sampling circuit board.

[0008] By adopting the technical solution of this embodiment, one end of the flexible electrical connector is electrically connected to the first electrical connector of the first circuit board, and the other end of the flexible electrical connector is electrically connected to the second electrical connector of the second circuit board, thereby achieving an electrical connection between the first and second circuit boards. The flexible electrical connector can be bent and deformed, so when there are large installation errors in the first circuit board, the second circuit board, the first electrical connector, or the second electrical connector, the bending and deformation of the flexible electrical connector can compensate for the installation errors, ensuring a stable and reliable electrical connection between the flexible electrical connector and the first and second electrical connectors. This effectively improves the reliability of the electrical connection between the first and second circuit boards, which is beneficial to improving the reliability of the power distribution device and reducing the installation accuracy and difficulty of the first circuit board, the second circuit board, and the first or second electrical connector. The first circuit board is a battery control board, and the second circuit board is a battery cell sampling circuit board, which helps to improve the reliability of the electrical connection between the battery control board and the battery cell sampling circuit board, thus improving the reliability of the power distribution device.

[0009] In some embodiments, the flexible electrical connector includes a flexible cable and a first plug, the flexible cable having a first end and a second end, the first end being electrically connected to the first plug; one of the first electrical connector and the second electrical connector includes a first socket, the other of the first electrical connector and the second electrical connector being electrically connected to the second end, and the first plug being inserted into the first socket.

[0010] By adopting the technical solution of this embodiment, the flexible electrical connector adopts a flexible ribbon cable structure. The flexible ribbon cable has good flexibility, which can better compensate for installation errors and improve the reliability of the electrical connection between the first circuit board and the second circuit board. In addition, the flexible ribbon cable has a flat and thin structure, which occupies less space and is conducive to improving the structural compactness of the power distribution device and reducing the size of the power distribution device. Furthermore, the flexible electrical connector can be electrically connected to the first circuit board or the second circuit board by plugging in the first socket and the first plug. The electrical connection operation is simple and facilitates the assembly of the power distribution device.

[0011] In some embodiments, the flexible cable includes at least one of a flexible printed circuit board and a flexible flat cable.

[0012] By adopting the technical solution of this embodiment, the flexible printed circuit board and flexible flat cable have good bending deformation capabilities, which can better compensate for installation errors and improve the electrical connection reliability of the first and second circuit boards. In addition, the flexible flat cable has low cost, which helps to reduce the manufacturing cost of the power distribution device. The flexible printed circuit board has high flexibility and high reliability, and in vibration environments such as vehicles, it effectively offsets the stress generated by vibration loads on the flexible electrical connectors. The flexible printed circuit board can also buffer the impact of vibration, which helps to improve the stability and reliability of the electrical connection between the first and second circuit boards, thereby improving the performance and service life of the battery device.

[0013] In some embodiments, the surface of the first socket facing away from the first plate is provided with a first insertion interface for inserting a first plug.

[0014] By adopting the technical solution of this embodiment, the first plug can be inserted from the first socket away from the first insertion interface of the first plate, so that the direction of the first plug being inserted into the first socket is perpendicular to or nearly perpendicular to the first plate, which facilitates the connection between the first socket and the first plug and facilitates the assembly of the power distribution device.

[0015] In some embodiments, the flexible electrical connector further includes a second plug electrically connected to a second end, the first electrical connector includes a first socket, the second electrical connector includes a second socket, and the second plug is inserted into the second socket.

[0016] By adopting the technical solution of this embodiment, the first socket and the first plug are plugged in to realize the electrical connection between the flexible cable and the first circuit board, and the second socket and the second plug are plugged in to realize the electrical connection between the flexible cable and the second circuit board. The operation of the flexible electrical connector to electrically connect the first circuit board and the second circuit board is simple and facilitates the assembly of the power distribution device.

[0017] In some embodiments, the surface of the second socket facing away from the second plate is provided with a second insertion interface for inserting a second plug.

[0018] By adopting the technical solution of this embodiment, the second plug can be inserted from the second socket back to the second insertion interface of the second plate, so that the direction of the second plug being inserted into the second socket is perpendicular to or nearly perpendicular to the second plate, which facilitates the connection of the second socket and the second plug and facilitates the assembly of the power distribution device.

[0019] In some embodiments, the second plate is located on one side of the first plate along its own thickness direction, the first plate and the second plate are arranged perpendicularly, and the second plate is located at the edge of the first plate and forms a receiving space.

[0020] By adopting the technical solution of this embodiment, the first plate and the second plate are arranged in a three-dimensional space, which is beneficial to improving the structural compactness of the power distribution device and reducing the external size of the power distribution device.

[0021] In some embodiments, the first socket and the second plate are located on the same side of the first plate.

[0022] By adopting the technical solution of this embodiment, the first socket and the second plate are located on the same side of the first plate, so that the first socket and the second socket are both located on the same side of the first plate, which facilitates the insertion of the first plug of the flexible electrical connector into the first socket and facilitates the assembly of the power distribution device.

[0023] In some embodiments, the second socket and the first socket are located on the side of the second plate facing away from the receiving space.

[0024] By adopting the technical solution of this embodiment, the second socket and the first socket are located on the side of the second plate facing away from the receiving space, which can reduce the risk of interference between the first socket and the second socket and the electronic components in the receiving space, and also facilitate the arrangement of electronic components.

[0025] In some embodiments, a low-voltage connector is provided on the side of the second plate facing away from the receiving space, and the low-voltage connector and the second socket are spaced apart along a direction parallel to the surface of the second plate.

[0026] By adopting the technical solution of this embodiment, a low-voltage connector is provided on the side of the second plate facing away from the receiving space. The low-voltage connector protrudes from the surface of the second plate facing away from the receiving space. The space formed by the low-voltage connector protruding from the second plate can be used for the installation of the first plug, the second plug, the first socket, the second socket and the flexible ribbon cable. This improves the space utilization rate in the power distribution device, improves the structural compactness of the power distribution device, and helps to reduce the external size of the power distribution device.

[0027] In some embodiments, the first circuit board is a battery control board, and the second circuit board is a battery cell sampling circuit board.

[0028] By adopting the technical solution of this embodiment, it is beneficial to improve the electrical connection reliability of the battery control board and the battery cell sampling circuit board, and improve the reliability of the power distribution device.

[0029] Secondly, a battery device is provided, including the aforementioned power distribution device.

[0030] By adopting the technical solution of this embodiment, the battery device uses the above-mentioned power distribution device, which has good reliability and is conducive to improving the reliability and performance of the battery device.

[0031] Thirdly, an electrical device is provided, including the battery device described above.

[0032] By adopting the technical solution of this embodiment, the electrical device uses the above-mentioned battery device, which has good reliability and performance, thus improving the performance of the electrical device.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0036] Figure 2 This is an exploded view of a battery device provided in some embodiments of this application.

[0037] Figure 3 This is a schematic diagram of the structure of a battery device provided in some other embodiments of this application.

[0038] Figure 4 This is a schematic diagram of the structure of a power distribution device provided in some embodiments of this application.

[0039] Figure 5 for Figure 4 The diagram shows the structure of the power distribution device.

[0040] Figure 6 for Figure 5 A schematic diagram of the structure of the first circuit board, the second circuit board, and the flexible electrical connector.

[0041] Figure 7 for Figure 6 A schematic diagram of the structure of the first socket, the second socket, and the flexible electrical connector.

[0042] The following are the labeling elements in the figure:

[0043] 1000, Vehicle; 1100, Battery Unit; 1200, Controller; 1300, Motor; 100, Battery Cell; 200, Housing; 210, First Housing; 220, Second Housing; 300, Power Distribution Unit; 301, Reception Space; 310, First Circuit Board; 311, First Board; 312, First Electrical Connector; 3121, First Socket; 3122, First Plug; 320, Second Circuit Board; 321, Second Board; 322, Second Electrical Connector; 3221, Second Socket; 3222, Second Plug; 323, Low-Voltage Connector; 330, Flexible Electrical Connector; 331, Flexible Cable; 332, First Plug; 333, Second Plug; 340, Housing. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature.

[0046] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this application, it should be understood that the terms "inner", "outer", "side", "upper", "bottom", "front", "rear", etc., indicating the orientation or positional relationship are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0051] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0052] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0053] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0054] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0055] The power distribution unit is an important component of the battery unit. It can manage and distribute the electrical energy of the battery unit, and can also collect the operating information of the individual battery cells in the battery unit in real time, so as to monitor the operating status of the entire battery unit in real time.

[0056] Poor reliability of electrical connections between circuit boards within a power distribution unit can be a problem. For example, a power distribution unit typically contains a battery management control board and a battery cell sampling circuit board. These two boards are connected via a fixed plug-in adapter. The adapter's socket is located on the battery management control board, and its plug is on the battery cell sampling circuit board. Electrical connection between the two boards is achieved through the insertion and connection of the plug and socket. However, the fixed plug-in adapter requires high precision in both the installation positions of the battery management control board and the battery cell sampling circuit board. If there are significant installation errors in either the battery management control board or the battery cell sampling circuit board, or if the fixed plug-in adapter itself has a significant installation error, problems such as poor contact or excessive stress between the terminals can easily occur after the plug and socket of the fixed plug-in adapter are inserted. This can lead to poor electrical connection between the battery management control board and the battery cell sampling circuit board, or even failure of the fixed plug-in adapter, thus hindering the improvement of the reliability of their electrical connection.

[0057] Based on this, embodiments of this application provide a power distribution device, which includes a first circuit board, a second circuit board, and a flexible electrical connector. The first circuit board includes a first plate body and a first electrical connector disposed on the first plate body, and the first plate body is electrically connected to the first electrical connector. The second circuit board includes a second plate body and a second electrical connector disposed on the second plate body, and the second plate body is electrically connected to the second electrical connector. One end of the flexible electrical connector is electrically connected to the first electrical connector, and the other end of the flexible electrical connector is electrically connected to the second electrical connector.

[0058] In the power distribution device of this application embodiment, one end of the flexible electrical connector is electrically connected to the first electrical connector of the first circuit board, and the other end of the flexible electrical connector is electrically connected to the second electrical connector of the second circuit board, thereby achieving an electrical connection between the first circuit board and the second circuit board. The flexible electrical connector can be bent and deformed, so when there are large installation errors in the first circuit board, the second circuit board, the first electrical connector, or the second electrical connector, the bending and deformation of the flexible electrical connector can compensate for the installation errors, ensuring a stable and reliable electrical connection between the flexible electrical connector and the first and second electrical connectors. This effectively improves the reliability of the electrical connection between the first and second circuit boards, which is beneficial for improving the reliability of the power distribution device and also helps to reduce the installation accuracy and difficulty of the first circuit board, the second circuit board, the first electrical connector, or the second electrical connector.

[0059] The technical solutions described in the embodiments of this application are applicable to power distribution devices, battery devices using power distribution devices, and power consumption devices using battery devices.

[0060] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using the battery device disclosed in this application.

[0061] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric bicycles, electric motorcycles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0062] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0063] Please refer to Figure 1Vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1100 is installed inside vehicle 1000, which can be located at the bottom, front, or rear of vehicle 1000. Battery device 1100 can be used to power vehicle 1000; for example, it can serve as the operating power source for vehicle 1000's electrical system, such as meeting the power requirements for starting, navigation, and operation of vehicle 1000.

[0064] The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1100 to supply power to the motor 1300, for example, for the power needs of the vehicle 1000 during startup, navigation and driving.

[0065] See Figure 2 As shown, in some embodiments of this application, the battery device 1100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0066] The battery device 1100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells 100, which are connected in series, parallel, or mixed connections via busbars.

[0067] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 100.

[0068] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 100 together to form an independent module. As an example, a battery module can also be formed by bundling multiple battery cells 100 together with cable ties.

[0069] In some embodiments, the battery device 1100 may be a battery pack, which includes a housing 200 and one or more individual battery cells housed in the housing 200.

[0070] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 200 by fixing the battery module in the housing 200.

[0071] As an example, the battery cell assembly can also be housed in the housing 200 by directly fixing multiple battery cells 100 to the housing 200.

[0072] As an example, the housing 200 may include a first housing 210 and a second housing 220. The first housing 210 and the second housing 220 are fastened together to form a closed space inside the housing 200 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 210 may be a top cover or a bottom plate.

[0073] As an example, the housing 200 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 200 forms an enclosed space to accommodate the battery cell assembly.

[0074] In some embodiments, the housing 200 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 200 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 200 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0075] In this embodiment of the application, the battery cell 100 can be a secondary battery. A secondary battery refers to a battery cell 100 that can be used again after being discharged by recharging to activate the active materials.

[0076] The battery cell 100 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0077] See Figure 3 As shown in the figure, this application embodiment provides a power distribution device 300, which is electrically connected to a battery cell assembly. The battery device 1100 is connected to the power system of the power-consuming device through the power distribution device 300, and the power distribution device 300 performs high voltage distribution on the battery device 1100. The power distribution device 300 can also collect the operating information of the battery cells 100 in the battery device 1100 in real time, so as to monitor the operating status of the battery device 1100 in real time.

[0078] In some examples, the power distribution device 300 may be referred to as a high-voltage box, a high-voltage distribution box, or a power distribution unit, etc.

[0079] See below Figures 4-7 The power distribution device 300 of this application will be described, wherein, Figure 6In the diagram, the thickness direction of the first circuit board 310 and the first plate body 311 can be referred to the Z direction, the width direction of the first circuit board 310 and the first plate body 311 can be referred to the Y direction, and the length direction of the first circuit board 310 and the first plate body 311 can be referred to the X direction.

[0080] In some embodiments, the power distribution device 300 includes a first circuit board 310, a second circuit board 320, and a flexible electrical connector 330. The first circuit board 310 includes a first plate body 311 and a first electrical connector 312 disposed on the first plate body 311, and the first plate body 311 is electrically connected to the first electrical connector 312. The second circuit board 320 includes a second plate body 321 and a second electrical connector 322 disposed on the second plate body 321, and the second plate body 321 is electrically connected to the second electrical connector 322. One end of the flexible electrical connector 330 is electrically connected to the first electrical connector 312, and the other end of the flexible electrical connector 330 is electrically connected to the second electrical connector 322.

[0081] In some examples, the power distribution unit 300 has a receiving space 301 for accommodating electronic components within the battery unit 1100, such as relays, current sensors, and fuses. The power distribution unit 300 is connected to the housing 200 so that it remains relatively stationary with respect to the battery unit 1100 when the vehicle 1000 is in motion. The power distribution unit 300 can be fixed either inside or outside the housing 200.

[0082] The power distribution device 300 typically contains multiple circuit boards with connecting lines. These connecting lines electrically connect the electronic components within the power distribution device 300, thereby enabling voltage distribution and the collection of operating information from the individual battery cells 100. This operating information may include, but is not limited to, the voltage, current, and temperature of the individual battery cells 100.

[0083] In the two circuit boards that need to be connected by a connector, one circuit board is a first circuit board 310 and the other circuit board is a second circuit board 320. The first circuit board 310 is a battery control board, and the second circuit board 320 is a battery cell sampling circuit board.

[0084] The first circuit board 310 is a battery control board, which can be called a BMU (Battery Management Unit) circuit board. The second circuit board 320 is a battery cell sampling circuit board, which can be called a CMC (Cell Monitor Circuit) circuit board.

[0085] For example, the BMU board integrates a high-performance microprocessor board that can be used to execute the top-level control, calculation, communication and protection strategies of the BMS (Battery Management System).

[0086] The CMC circuit board can refer to a circuit board responsible for collecting the operating information of the battery cells 100. For example, the CMC circuit board can be responsible for collecting the operating information of all battery cells 100 in the battery module or the operating information of some battery cells 100.

[0087] The first circuit board 310 includes a first board body 311 and a first electrical connector 312. The first board body 311 can refer to the main plate-shaped portion of the first circuit board 310, with connecting lines disposed within the first board body 311. The first electrical connector 312 can refer to the portion of the first circuit board 310 used for electrical connection with the flexible electrical connector 330. The first electrical connector 312 is electrically connected to the connecting lines within the first board body 311. The first electrical connector 312 can be components such as solder pads or sockets provided on the first board body 311. The first electrical connector 312 can be fixed to the first board body 311 by means of welding, screw fixing, or other methods. The first board body 311 may be provided with components such as resistors, capacitors, and inductors.

[0088] The second circuit board 320 includes a second board body 321 and a second electrical connector 322. The second board body 321 can refer to the main plate-shaped portion of the second circuit board 320, with connecting lines located within it. The second electrical connector 322 refers to the portion of the second circuit board 320 used for electrical connection with the flexible electrical connector 330. The second electrical connector 322 is electrically connected to the connecting lines within the second board body 321. The second electrical connector 322 can be components such as pads or sockets provided on the second board body 321. The second electrical connector 322 can be fixed to the second board body 321 by welding, screw fixing, or other methods. The second board body 321 may contain components such as resistors, capacitors, and inductors.

[0089] The flexible electrical connector 330 can refer to a bendable and deformable electrical connector. The flexible electrical connector 330 is capable of transmitting electrical energy or electrical signals to achieve an electrical connection between the first circuit board 310 and the second circuit board 320. At least a portion of the flexible electrical connector 330 is bendable.

[0090] In some examples, the flexible electrical connector 330 can use a flexible material (such as a special polymer film, rubber, braided fabric, etc.) as an insulating substrate or sheath, with an embedded conductor (such as a fine copper wire, copper foil, braided wire, etc.), so that the flexible electrical connector 330 can both bend and achieve electrical connection.

[0091] For example, the flexible electrical connector 330 may have a flexible flat cable, flexible printed circuit board, or other similar structure.

[0092] The flexible electrical connector 330 can take various forms, such as strip, bend, arc, etc.

[0093] One end of the flexible electrical connector 330 is electrically connected to the first electrical connector 312, and the other end of the flexible electrical connector 330 is electrically connected to the second electrical connector 322, so that the first circuit board 310 and the second circuit board 320 are electrically connected through the flexible electrical connector 330. The flexible electrical connector 330 and the first electrical connector 312 can be electrically connected by welding, crimping, plugging, or other methods. The flexible electrical connector 330 and the second electrical connector 322 can also be electrically connected by welding, crimping, plugging, or other methods.

[0094] For example, the CMC circuit board is electrically connected to the sampling line of the battery device. One end of the sampling line is electrically connected to the tab on the battery cell, and the other end is electrically connected to the CMC circuit board. After acquiring the voltage information of the battery cell, the sampling line transmits it to the CMC circuit board. The voltage information of the battery cell 100 collected by the CMC circuit board is transmitted to the battery control board through the flexible electrical connector 330. The battery control board can perform calculations based on the voltage information of the battery cell 100 to determine the operating status of the battery cell 100 in the battery device 1100. A temperature sensor may also be provided at the end of the sampling line to acquire the temperature information of the battery cell.

[0095] By adopting the technical solution of this embodiment, one end of the flexible electrical connector 330 is electrically connected to the first electrical connector 312 of the first circuit board 310, and the other end of the flexible electrical connector 330 is electrically connected to the second electrical connector 322 of the second circuit board 320, thereby achieving an electrical connection between the first circuit board 310 and the second circuit board 320. The flexible electrical connector 330 can be bent and deformed, so when there are large installation errors in the first circuit board 310, the second circuit board 320, the first electrical connector 312, or the second electrical connector 322, the bending and deformation of the flexible electrical connector 330 can compensate for the installation errors, ensuring a stable and reliable electrical connection between the flexible electrical connector 330 and the first electrical connector 312 and the second electrical connector 322. This effectively improves the reliability of the electrical connection between the first circuit board 310 and the second circuit board 320, which is beneficial for improving the reliability of the power distribution device 300 and also helps to reduce the installation accuracy and difficulty of the first circuit board 310, the second circuit board 320, the first electrical connector 312, or the second electrical connector 322. The first circuit board 310 and the second circuit board 320 are connected via a flexible electrical connector 330, which improves the reliability of the connection between the two circuit boards. The first circuit board 310 is a battery control board, and the second circuit board 320 is a battery cell sampling circuit board. This improves the reliability of the electrical connection between the battery control board and the battery cell sampling circuit board, thereby enhancing the reliability of the power distribution device 300.

[0096] In some embodiments, the power distribution device 300 includes a housing 340, within which circuit boards and electronic components are disposed, providing protection for the circuit boards and electronic components. The housing 340 can completely cover the circuit boards and electronic components, preventing them from being exposed; or the circuit boards and electronic components may protrude from the housing 340.

[0097] In some embodiments, the flexible electrical connector 330 includes a flexible cable 331 and a first plug 332. The flexible cable 331 has a first end and a second end, and the first end is electrically connected to the first plug 332. One of the first electrical connector 312 and the second electrical connector 322 includes a first socket 3121, and the other of the first electrical connector 312 and the second electrical connector 322 is electrically connected to the second end. The first plug 332 is inserted into the first socket 3121.

[0098] The flexible flat cable 331 can refer to a flat strip-shaped flexible electrical connection component. For example, the flexible flat cable 331 may include an insulating substrate, a conductive layer and an insulating cover layer, which are stacked together. The conductive layer adopts a structure of multiple parallel and spaced flat copper foils or copper wires, etc. The number of guiding layers can be 1, 2, 3, etc.

[0099] The flexible ribbon cable 331 has two ends that are relatively distributed along its length, namely the first end and the second end.

[0100] The first plug 332 can refer to the male connector portion installed at the first end. The first plug 332 can be directly soldered or crimped onto the first end.

[0101] In some examples, the first plug 332 includes a first housing and a first metal terminal, the first metal terminal being disposed within the first housing. The first housing is fixed to the first end of the flexible ribbon cable 331 by thermoforming or mechanical riveting, and the first metal terminal is electrically connected to the conductive layer within the flexible ribbon cable 331.

[0102] The first socket 3121 may refer to the female portion of the connector used to mate with the first plug 332.

[0103] In some examples, the first socket 3121 is provided with pin holes, and the pin holes in the first socket 3121 are connected one-to-one with the metal terminals of the first plug 332, thereby realizing the plug-in electrical connection between the first socket 3121 and the first plug 332.

[0104] The first electrical connector 312 includes a first socket 3121, and its second end is electrically connected to the second electrical connector 322; or, the second electrical connector 322 includes a first socket 3121, and its second end is electrically connected to the first electrical connector 312.

[0105] For example, the first electrical connector 312 is a first socket 3121, which is fixed to the first circuit board 310. For instance, the first socket 3121 is soldered to the pads of the first circuit board 310.

[0106] For example, the second electrical connector 322 is the first socket 3121, which is fixed to the second circuit board 320, for example, the first socket 3121 is soldered to the pads of the second circuit board 320.

[0107] By adopting the technical solution of this embodiment, the flexible electrical connector 330 adopts the structure of a flexible ribbon cable 331. The flexible ribbon cable 331 has good flexibility, which can better compensate for installation errors and improve the reliability of electrical connection between the first circuit board 310 and the second circuit board 320. In addition, the flexible ribbon cable 331 has a flat and thin structure, which occupies less space and is conducive to improving the structural compactness of the power distribution device 300 and reducing the volume of the power distribution device 300. Furthermore, the flexible electrical connector 330 can be electrically connected to the first circuit board 310 or the second circuit board 320 by plugging in the first socket 3121 and the first plug 332. The electrical connection operation is simple and facilitates the assembly of the power distribution device 300.

[0108] In some embodiments, the flexible cable 331 includes at least one of a flexible printed circuit board and a flexible flat cable.

[0109] In some examples, the flexible cable 331 is a flexible printed circuit (FPC).

[0110] In some examples, the flexible cabling 331 is a flexible flat cable (FFC).

[0111] In some examples, the flexible cabling 331 includes a flexible printed circuit board and a flexible flat cable.

[0112] By adopting the technical solution of this embodiment, the flexible printed circuit board and flexible flat cable have good bending deformation capabilities, which can better compensate for installation errors and improve the electrical connection reliability of the first circuit board 310 and the second circuit board 320. In addition, the flexible flat cable has low cost, which helps to reduce the manufacturing cost of the power distribution device 300. The flexible printed circuit board has high flexibility and high reliability, and in the vibration environment such as the vehicle 1000, it effectively offsets the stress generated by the vibration load on the flexible electrical connector 330. The flexible printed circuit board can also buffer the impact of vibration, which helps to improve the stability and reliability of the electrical connection between the first circuit board 310 and the second circuit board 320, thereby improving the performance and service life of the battery device 1100.

[0113] In some embodiments, the surface of the first socket 3121 facing away from the first plate 311 is provided with a first insertion interface 3122 for inserting a first plug 332.

[0114] The first plug-in interface 3122 may refer to the opening of the first socket 3121 for inserting the first plug 332. The first socket 3121 is located on the surface of the first plate 311 and protrudes from the first plate 311. The first plug-in interface 3122 is located away from the first plate 311.

[0115] By adopting the technical solution of this embodiment, the first plug 332 can be inserted from the first socket 3121 away from the first insertion interface 3122 of the first plate 311, so that the direction of the first plug 332 inserted into the first socket 3121 is perpendicular to or nearly perpendicular to the first plate 311, which facilitates the connection between the first socket 3121 and the first plug 332 and facilitates the assembly of the power distribution device 300.

[0116] In some other embodiments, the first connector 3122 is located on another surface of the first connector 3122. For example, the first connector 3122 is located on a surface adjacent to the surface of the first socket 3121 facing away from the first plate 311, such that the first plug 332 can be inserted into the first socket 3121 in a direction parallel to or nearly parallel to the first plate 311. This helps to reduce the size of the first socket 3121 in the thickness direction of the first circuit board 310 and improves the structural compactness of the power distribution device 300.

[0117] In some embodiments, the flexible electrical connector 330 further includes a second plug 333, which is electrically connected to a second end. The first electrical connector 312 includes a first socket 3121, and the second electrical connector 322 includes a second socket 3221. The second plug 333 is inserted into the second socket 3221.

[0118] The second plug 333 can refer to the male connector portion installed at the second end. The second plug 333 can be directly soldered or crimped onto the second end.

[0119] For example, the second plug 333 includes a second housing and a second metal terminal, the second metal terminal being disposed within the second housing. The second housing is fixed to the second end of the flexible ribbon cable 331 by thermoforming or mechanical riveting, and the second metal terminal is electrically connected to the conductive layer within the flexible ribbon cable 331.

[0120] The second socket 3221 may refer to the female portion of the connector used to mate with the second plug 333.

[0121] The first socket 3121 is located on the first circuit board 310, and the second socket 3221 is located on the second circuit board 320.

[0122] For example, the second electrical connector 322 is a second socket 3221, which is fixed to the second circuit board 320, for example, the second socket 3221 is soldered to the pads of the second circuit board 320.

[0123] The first plug 332 and the second plug 333 may have the same or different structures. The first socket 3121 and the second socket 3221 may have the same or different structures.

[0124] By adopting the technical solution of this embodiment, the first socket 3121 and the first plug 332 are plugged in to realize the electrical connection between the flexible cable 331 and the first circuit board 310. The second socket 3221 and the second plug 333 are plugged in to realize the electrical connection between the flexible cable 331 and the second circuit board 320. The operation of the flexible electrical connector 330 to electrically connect the first circuit board 310 and the second circuit board 320 is simple and facilitates the assembly of the power distribution device 300.

[0125] In some embodiments, the surface of the second socket 3221 facing away from the second plate 321 is provided with a second insertion interface 3222 for inserting the second plug 333.

[0126] The second insertion interface 3222 may refer to the opening of the second socket 3221 for inserting the second plug 333. The second socket 3221 is located on the surface of the second plate 321 and protrudes from the second plate 321. The second insertion interface 3222 is located away from the second plate 321.

[0127] By adopting the technical solution of this embodiment, the second plug 333 can be inserted from the second socket 3221 away from the second insertion interface 3222 of the second plate 321, so that the direction of the second plug 333 inserted into the second socket 3221 is perpendicular to or nearly perpendicular to the second plate 321. This facilitates the connection of the second socket 3221 and the second plug 333, and facilitates the assembly of the power distribution device 300.

[0128] In some other embodiments, the second connector 3222 may also be located on other surfaces of the second connector 3222. For example, the second connector 3222 is located on a surface adjacent to the surface of the second socket 3221 facing away from the second plate 321, such that the second plug 333 can be inserted into the second socket 3221 in a direction parallel to or nearly parallel to the second plate 321. This helps to reduce the size of the second socket 3221 in the thickness direction of the second circuit board 320 and improves the structural compactness of the power distribution device 300.

[0129] In some embodiments, the second plate 321 is located on one side of the first plate 311 along its own thickness direction, the first plate 311 and the second plate 321 are arranged perpendicularly, and the second plate 321 is located at the edge of the first plate 311 and forms a receiving space 301.

[0130] The first plate 311 has two sides that are relatively distributed along its own thickness direction, and the second plate 321 is located on one of them.

[0131] The first plate 311 and the second plate 321 are arranged perpendicularly. It can be understood that the first plate 311 and the second plate 321 are perpendicular or nearly perpendicular. Due to factors such as installation errors, the first plate 311 and the second plate 321 are arranged nearly perpendicularly, and the included angle formed by the first plate 311 and the second plate 321 can be in the range of 80°~100°.

[0132] The second plate 321 is located at the edge of the first plate 311. It can be understood that the second plate 321 is not located in the middle of the first plate 311, but is offset from the middle of the first plate 311.

[0133] In some examples, the first plate 311 and the second plate 321 form an L-shaped structure. The portion of the first plate 311 excluding the side opposite to the second plate 321 and the space formed by the second plate 321 constitutes a receiving space 301, which can accommodate the aforementioned electronic components.

[0134] For example, the first plate 311 is horizontally arranged, and the second plate 321 can be located below the first plate 311. The second plate 321 is located on one side of the first plate 311 along its own width direction and extends along the length direction of the first plate 311. This layout facilitates the distribution of electronic components and helps to improve the structural compactness of the power distribution device 300.

[0135] By adopting the technical solution of this embodiment, the first plate 311 and the second plate 321 are arranged in a three-dimensional space, which is beneficial to improving the structural compactness of the power distribution device 300 and reducing the external size of the power distribution device 300.

[0136] In some embodiments, the first socket 3121 and the second plate 321 are located on the same side of the first plate 311.

[0137] For example, the first plate 311 is horizontally arranged, and the second socket 3221, the first socket 3121, and the second plate 321 are located on the lower side of the first plate 311. The first socket 3121 and the second socket 3221 are arranged facing each other to facilitate the routing of the flexible ribbon cable 331. The first socket 3121 is located on the surface of the first plate 311 along its own thickness direction, and the second socket 3221 is located on the surface of the second plate 321 along its own thickness direction.

[0138] By adopting the technical solution of this embodiment, the first socket 3121 and the second plate 321 are located on the same side of the first plate 311, so that the first socket 3121 and the second socket 3221 are both located on the same side of the first plate 311, which facilitates the insertion of the first plug 332 of the flexible electrical connector 330 into the first socket 3121 and facilitates the assembly of the power distribution device 300.

[0139] In some embodiments, the second socket 3221 and the first socket 3121 are located on the side of the second plate 321 facing away from the receiving space 301.

[0140] The second socket 3221 and the first socket 3121 are located on the same side of the second plate 321 and are both facing away from the receiving space 301. That is, the second socket 3221 and the first socket 3121 are not located in the receiving space 301 and do not occupy the receiving space 301, which facilitates the distribution of electronic components.

[0141] By adopting the technical solution of this embodiment, the second socket 3221 and the first socket 3121 are located on the side of the second plate 321 facing away from the receiving space 301, which can reduce the risk of interference between the first socket 3121 and the second socket 3221 and the electronic components in the receiving space 301, and also facilitate the arrangement of electronic components.

[0142] In some embodiments, a low-voltage connector 323 is provided on the side of the second plate 321 facing away from the receiving space 301, and the low-voltage connector 323 and the second socket 3221 are spaced apart along a direction parallel to the plate surface of the second plate 321.

[0143] The low-voltage connector 323 can refer to a connector that is electrically connected to the low-voltage system of the vehicle; the second socket 3221, the first socket 3121 and the low-voltage connector 323 are all located on the side of the second plate 321 facing away from the receiving space 301.

[0144] The direction parallel to the surface of the second plate 321 can refer to the direction perpendicular to the thickness direction of the second plate 321. For example, the low-voltage connector 323 and the second socket 3221 are arranged at intervals along the width direction of the second plate 321, or the low-voltage connector 323 and the second socket 3221 are arranged at intervals along the length direction of the second plate 321.

[0145] In some examples, the low-voltage connector 323 is located inside the housing 340, and a receiving gap is formed between the second plate 321 and the side wall of the housing 340. The low-voltage connector 323 is located within the receiving gap, and the low-voltage connector 323 and the second socket 3221 are spaced apart along a direction parallel to the surface of the second plate 321, so that the first plug 332, the second plug 333, the first socket 3121, the second socket 3221 and the flexible cable 331 can all be located within the receiving gap. This makes full use of the space inside the power distribution device 300 and improves the structural compactness of the power distribution device 300.

[0146] By adopting the technical solution of this embodiment, a low-voltage connector 323 is provided on the side of the second plate 321 facing away from the receiving space 301. The low-voltage connector 323 protrudes from the surface of the second plate 321 facing away from the receiving space 301. The space formed by the low-voltage connector 323 protruding from the second plate 321 can be used for the installation of the first plug 332, the second plug 333, the first socket 3121, the second socket 3221 and the flexible cable 331. This improves the space utilization rate within the power distribution device 300, improves the structural compactness of the power distribution device 300, and helps to reduce the external dimensions of the power distribution device 300.

[0147] In some embodiments, the battery device 1100 includes the power distribution device 300 described above.

[0148] By adopting the technical solution of this embodiment, the battery device 1100 uses the above-mentioned power distribution device 300, which has good reliability and is conducive to improving the reliability and performance of the battery device 1100.

[0149] In some embodiments, the electrical device includes the battery device 1100 described above.

[0150] By adopting the technical solution of this embodiment, the power device uses the battery device 1100 described above. The battery device 1100 has good reliability and performance, which is beneficial to improving the performance of the power device.

[0151] See Figures 4-7 As shown, in some embodiments, the power distribution device 300 includes a first circuit board 310, a second circuit board 320, and a flexible electrical connector 330. The first circuit board 310 includes a first plate body 311 and a first socket 3121, with the first socket 3121 disposed on the first plate body 311. The second circuit board 320 includes a second plate body 321 and a second socket 3221, with the second socket 3221 disposed on the second plate body 321. The surface of the first socket 3121 facing away from the first plate body 311 has a first insertion interface 3122 for inserting a first plug 332, and the surface of the second socket 3221 facing away from the second plate body 321 has a second insertion interface 3222 for inserting a second plug 333. The second plate body 321 is located on one side of the first plate body 311 along its own thickness direction, and the first plate body 311 and the second plate body 321 are arranged perpendicularly. The second plate body 321 is located on the edge of the first plate body 311 along its own width and forms a receiving space 301. The flexible electrical connector 330 includes a first socket 3121, a second socket 3221, and a flexible cable 331. Both ends of the flexible cable 331 are connected to the first socket 3121 and the second socket 3221, respectively. The first socket 3121 is plugged into a first plug 332, and the second socket 3221 is plugged into a second plug 333. The first socket 3121 and the second plate 321 are located on the same side of the first plate 311. The second socket 3221 and the first socket 3121 are located on the side of the second plate 321 facing away from the receiving space 301. A low-voltage connector 323 is provided on the side of the second plate 321 facing away from the receiving space 301. The low-voltage connector 323 and the second socket 3221 are spaced apart along the length of the second plate 321.

[0152] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power distribution device for a battery device, comprising: The power distribution device comprises: a first circuit board comprising a first board body and a first electrical connector provided on the first board body, the first board body being electrically connected to the first electrical connector; a second circuit board comprising a second board body and a second electrical connector provided on the second board body, the second board body being electrically connected to the second electrical connector; a flexible electrical connector, one end of the flexible electrical connector being electrically connected to the first electrical connector, the other end of the flexible electrical connector being electrically connected to the second electrical connector, the first circuit board being a battery control board, and the second circuit board being a battery cell sampling circuit board.

2. The power distribution device of claim 1, wherein: The flexible electrical connector comprises a flexible flat cable and a first plug, the flexible flat cable having a first end and a second end, the first end being electrically connected to the first plug. One of the first electrical connector and the second electrical connector comprises a first socket, the other of the first electrical connector and the second electrical connector being electrically connected to the second end, the first plug being plugged into the first socket.

3. The power distribution device of claim 2, wherein: The flexible flat cable comprises at least one of a flexible printed circuit board and a flexible flat cable.

4. The power distribution device of claim 2, wherein: The first socket is provided with a first plug-in surface for the first plug to be inserted into.

5. The power distribution device of any one of claims 2-4, wherein: The flexible electrical connector further comprises a second plug, the second plug being electrically connected to the second end, the first electrical connector comprising the first socket, the second electrical connector comprising a second socket, and the second plug being plugged into the second socket.

6. The power distribution device of claim 5, wherein: The second socket is provided with a second plug-in surface for the second plug to be inserted into.

7. The power distribution device of claim 5, wherein: The second board body is located on one side of the first board body along the thickness direction of the first board body, the first board body and the second board body being arranged perpendicularly, the second board body being located on the edge of the first board body and forming an accommodation space.

8. The power distribution device of claim 7, wherein: The first socket and the second board body are located on the same side of the first board body.

9. The power distribution device of claim 8, wherein: The second socket and the first socket are provided on the side of the second board body away from the accommodation space.

10. The power distribution device of claim 9, wherein: The side of the second board body away from the accommodation space is provided with a low-voltage connector, the low-voltage connector and the second socket being arranged in parallel to the board surface of the second board body.

11. A battery device characterized by comprising: The power distribution device comprises:

12. An electrical device, characterized by: The battery device comprises:

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