A power distribution device, battery pack, and electric energy device

Abstract

The application relates to the battery technical field and provides a power distribution device, a battery pack and an electric energy equipment. The power distribution device comprises a shell, the inside of the shell is provided with a mounting cavity; a plurality of connecting rows are integrally injection molded with the shell, and at least one end of the connecting row is arranged at the bottom of the shell; a plurality of electrical elements are arranged in the mounting cavity, the electrical elements are electrically connected with the connecting rows, so that a first loop is formed among the plurality of electrical elements; and a circuit board is arranged at one end of the mounting cavity away from the bottom of the shell; the electrical elements are electrically connected with the circuit board, so that a second loop is formed among the plurality of electrical elements and the circuit board. The embodiment of the application can reduce the assembly difficulty of the power distribution device, and further improve the assembly efficiency of the power distribution device.

Description

Technical Field

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

[0002] In the field of new energy technology, such as new energy vehicles, batteries are the core component and power source of new energy vehicles. In particular, as a core component, batteries directly determine the market potential and sustainability of new energy vehicles. The Battery Disconnect Unit (BDU) is a core component of battery management, responsible for monitoring voltage and current to ensure efficient and safe system operation. This involves real-time monitoring of insulation status, data communication, and fault diagnosis.

[0003] In related technologies, a BDU generally includes a plastic housing, a circuit board located inside the plastic housing, and multiple electronic components. These multiple electronic components typically include a main positive relay, a main negative relay, a main fuse, a heating relay, a heating fuse, a pre-charge relay, and a pre-charge resistor. These multiple electronic components are fixed to the circuit board with bolts, and are connected to each other via connecting copper busbars.

[0004] However, the above-mentioned solutions are difficult to assemble, which reduces assembly efficiency. Utility Model Content

[0005] This application provides a power distribution device, a battery pack, and an electrical power equipment, which can reduce the assembly difficulty of the power distribution device and thus improve the assembly efficiency of the power distribution device.

[0006] A first aspect of this application provides a power distribution device, the power distribution device comprising:

[0007] A housing, the interior of which has a mounting cavity;

[0008] Multiple connecting bars, wherein the connecting bars are integrally injection molded with the housing, and at least one end of the connecting bar is disposed at the bottom of the housing;

[0009] A plurality of electrical components, at least a portion of which are located within the mounting cavity and are electrically connected to the connection drain, thereby forming a first circuit among the plurality of electrical components;

[0010] And a circuit board, the circuit board being disposed at one end of the mounting cavity away from the bottom of the housing;

[0011] The electrical components are electrically connected to the circuit board to form a second circuit between the plurality of electrical components and the circuit board.

[0012] In this embodiment, the power distribution device includes a housing, multiple connecting blocks, and multiple electrical components. The housing includes a mounting cavity for accommodating and protecting the electrical components. The electrical components are used to control the circuit connection or disconnection between the battery module and the load of the power-consuming device. By integrally injection molding the connecting blocks and the housing, the entire structure of the connecting blocks and the housing serves as the mounting reference for the electrical components. The electrical components are at least partially installed in the mounting cavity and electrically connected to the connecting blocks. This simultaneously achieves mechanical fixation of the electrical components to the housing and electrical connection between the electrical components and the connecting blocks, effectively reducing the assembly difficulty of the power distribution device. Therefore, the power distribution device provided in this embodiment has lower installation difficulty and higher assembly efficiency.

[0013] In one possible implementation, the connecting strip is embedded inside the housing.

[0014] In one possible implementation, the electrical component is welded to the connection bar.

[0015] In one possible implementation, the electrical components are soldered to the circuit board.

[0016] In one possible implementation, the plurality of electrical components include at least: a main positive relay and a main negative relay; the plurality of connection blocks include at least: a first connection block and a second connection block;

[0017] One end of the first connecting bar is electrically connected to one end of the main positive relay, and the other end of the first connecting bar is electrically connected to an external circuit; one end of the second connecting bar is electrically connected to the main negative relay, and the other end of the second connecting bar is electrically connected to an external circuit.

[0018] In one possible implementation, the plurality of electrical components further includes: a main fuse element; one end of the main fuse element is electrically connected to the other end of the first connection bar, and the other end of the main fuse element is electrically connected to the external circuit.

[0019] In one possible implementation, the plurality of electrical components further include: a fast charging assembly; the fast charging assembly is electrically connected to the main positive relay and the main negative relay respectively; the fast charging assembly is also electrically connected to the external circuit.

[0020] In one possible implementation, the fast charging component includes: a fast charging positive relay and a fast charging negative relay; the plurality of connection bars further includes: a third connection bar, a fourth connection bar, a fifth connection bar, and a sixth connection bar;

[0021] One end of the third connecting bar is electrically connected to the other end of the main positive relay, and the other end of the third connecting bar is electrically connected to one end of the fast charging positive relay; one end of the fourth connecting bar is electrically connected to the other end of the fast charging positive relay, and the other end of the fourth connecting bar is electrically connected to the external circuit.

[0022] One end of the fifth connecting bar is electrically connected to the other end of the main negative relay, and the other end of the fifth connecting bar is electrically connected to one end of the fast charging negative relay; one end of the sixth connecting bar is electrically connected to the other end of the fast charging negative relay, and the other end of the sixth connecting bar is electrically connected to the external circuit.

[0023] In one possible implementation, the plurality of electrical components further include a current boosting assembly; the current boosting assembly is electrically connected to the first connection bar and the external circuit, respectively.

[0024] In one possible implementation, the current boosting component includes: a current boosting relay; the plurality of connection bars further includes: a seventh connection bar;

[0025] One end of the seventh connecting bar is electrically connected to the current booster relay, and the other end of the seventh connecting bar is electrically connected to the external circuit;

[0026] Furthermore, the current-boosting relay is also connected to the first connection drain.

[0027] In one possible implementation, the plurality of electrical components further include a heating assembly; the heating assembly is electrically connected to the circuit board.

[0028] In one possible implementation, the heating assembly includes a heating relay; the heating relay is electrically connected to the circuit board and is disposed on the side of the circuit board facing the mounting cavity.

[0029] In one possible implementation, the heating assembly further includes a heating fuse element; the heating fuse element is electrically connected to the circuit board and is disposed on the side of the circuit board facing the mounting cavity;

[0030] A third circuit is formed between the heating relay, the heating fuse element, and the circuit board.

[0031] In one possible implementation, the plurality of connection bars further includes an eighth connection bar; one end of the eighth connection bar is electrically connected to the circuit board, and the other end of the eighth connection bar is electrically connected to the external circuit.

[0032] In one possible implementation, the main positive relay and the main negative relay are arranged adjacent to each other along the length of the housing, and the main fuse element is arranged adjacent to at least one of the main positive relay and the main negative relay; and / or,

[0033] Along the length of the housing, the fast charging positive relay and the fast charging negative relay are arranged adjacent to each other.

[0034] In one possible implementation, it further includes: at least one sampling component; one end of each sampling component is electrically connected to any one of the plurality of connection rows, and the other end of each sampling component is electrically connected to the circuit board.

[0035] In one possible implementation, the system further includes a heat dissipation assembly; the heat dissipation assembly is disposed at the bottom of the housing, and the connection bar is located between the heat dissipation assembly and the circuit board.

[0036] In one possible implementation, at least one end of each of the connection rows is in contact with the heat dissipation assembly.

[0037] In one possible implementation, the heat dissipation assembly includes a heat-conducting element and a heat dissipation element, the heat-conducting element being disposed between the heat dissipation element and the connecting bar.

[0038] In one possible implementation, the heat sink is a liquid cooling plate; or, the heat sink is an air supply component.

[0039] A second aspect of this application provides a battery pack comprising: a battery module and any of the above-described power distribution devices, wherein the power distribution devices are electrically connected to the battery module.

[0040] By incorporating the aforementioned power distribution device into the battery pack, the performance of the battery pack can be improved in this embodiment of the application.

[0041] A third aspect of this application provides an electrical power device, comprising: an electrical device and the battery pack described above; or, comprising the power distribution device described in any of the above claims.

[0042] By incorporating the aforementioned battery pack into the electrical equipment, the performance of the electrical equipment can be improved. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the overall structure of the power distribution device provided in the embodiments of this application;

[0045] Figure 2 for Figure 1 Top view of the power distribution equipment shown;

[0046] Figure 3 for Figure 1 The diagram shows a bottom view of the power distribution equipment.

[0047] Figure 4 This is a schematic diagram of the structure of the housing, multiple connecting bars, and multiple electrical components in the power distribution device provided in the embodiments of this application;

[0048] Figure 5 This is a schematic diagram of the structure of multiple connecting bars and multiple electrical components in the power distribution device provided in the embodiments of this application;

[0049] Figure 6 for Figure 1 The exploded view of the power distribution unit shown;

[0050] Figure 7 A schematic diagram of the circuit board, heating relay, and heating fuse element in the power distribution device provided in the embodiments of this application;

[0051] Figure 8 A schematic diagram of the structure of the main positive relay, main negative relay, main fuse element, fast charging positive relay, fast charging negative relay and the booster relay in the power distribution device provided in the embodiments of this application;

[0052] Figure 9 This is a schematic diagram of the structure of the mounting cavity of the housing in the power distribution device provided in the embodiments of this application;

[0053] Figure 10 A schematic diagram of the structure of a power distribution device provided in this application embodiment when multiple electrical components are located in the mounting cavity of the housing;

[0054] Figure 11 This is a schematic diagram illustrating the working principle of the power distribution device provided in the embodiments of this application.

[0055] Figure label:

[0056] 100 - Power distribution equipment;

[0057] 110 - Casing;

[0058] 111 - Mounting cavity;

[0059] 1111 - First cavity;

[0060] 1112 - Second cavity;

[0061] 1113 - Third cavity;

[0062] 1114 - Fourth cavity;

[0063] 1115 - Fifth cavity;

[0064] 1116 - Sixth cavity;

[0065] 1117 - Seventh cavity;

[0066] 121 - First connecting row;

[0067] 122 - Second connecting row;

[0068] 123 - Third connecting row;

[0069] 124 - Fourth connecting row;

[0070] 125 - Fifth connecting row;

[0071] 126 - Sixth connecting row;

[0072] 127 - Seventh Connecting Row;

[0073] 128 - Eighth connecting row;

[0074] 131 - Main positive relay;

[0075] 1311 - First high-voltage connection terminal;

[0076] 1312 - Second high-voltage connection terminal;

[0077] 1313 - First low-voltage connection terminal;

[0078] 1314 - Second low-voltage connection terminal;

[0079] 132 - Main negative relay;

[0080] 133 - Main fuse element;

[0081] 134 - Fast charging positive relay;

[0082] 135-Fast charging negative relay;

[0083] 136 - Current booster relay;

[0084] 137 - Heating relay;

[0085] 138 - Heating fuse;

[0086] 140 - Circuit board;

[0087] 150-Sampling Components;

[0088] 160 - Heat dissipation component;

[0089] 161 - Thermal conductive component;

[0090] 162 - Heat sink. Detailed Implementation

[0091] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0092] In new energy vehicles, the battery pack plays a crucial role. As the core of the power system, its performance, including energy density (which determines range), reliability, and cost, directly determines the market potential and sustainability of electric vehicles. The Battery Disconnect Unit (BDU) is the core component of battery management, responsible for monitoring voltage and current to ensure efficient and safe system operation. This involves real-time monitoring of insulation status, data communication, and fault diagnosis. It plays a vital role in the pre-charging process of high-voltage systems, ensuring safety during high-voltage system startup.

[0093] The new battery management system unit (BMS) collaborates with the battery management system via internal relays to achieve voltage division control and self-heating of the battery pack. This improves battery performance, extends battery life, and provides better protection against extreme weather conditions, thereby enhancing the overall efficiency and user experience of the electric vehicle system. Any technological advancements that enhance the stability and efficiency of the BMS unit will further improve the technological competitiveness of electric vehicles.

[0094] In electric vehicles, an integrated distribution box typically refers to a power management unit that integrates high-voltage power distribution, energy conversion, and protection functions. It is a highly integrated design aimed at optimizing the high-voltage electrical system of an electric vehicle, such as integrating key modules like the battery management system, motor controller, and charging controller into a compact enclosure. The advantages of this design include: simplified system structure, reduced wiring harnesses and connectors, and improved system reliability; increased space efficiency, contributing to optimized vehicle interior layout; more efficient internal system collaboration, enabling rapid response and handling of power demands, such as drive motor control and charging process management; and integrated protection measures that enhance overload and short-circuit protection for high-voltage components.

[0095] In related technologies, a BDU generally includes a plastic housing, a circuit board located inside the plastic housing, and multiple electronic components. These multiple electronic components typically include a main positive relay, a main negative relay, a main fuse, a heating relay, a heating fuse, a pre-charge relay, and a pre-charge resistor. These multiple electronic components are fixed to the circuit board with bolts, and are connected to each other via connecting copper busbars.

[0096] However, the above-mentioned solutions are difficult to assemble, which reduces assembly efficiency.

[0097] To address the aforementioned problems, this application provides a novel power distribution device, battery pack, and electrical equipment. The power distribution device includes a housing with an internal mounting cavity; multiple connecting bars integrally injection molded with the housing, with at least one end of each connecting bar located at the bottom of the housing; multiple electrical components, at least a portion of which are located within the mounting cavity and electrically connected to the connecting bars to form a first circuit; and a circuit board disposed at one end of the mounting cavity away from the bottom of the housing. The electrical components are electrically connected to the circuit board to form a second circuit between the multiple electrical components and the circuit board. This application reduces the assembly difficulty of the power distribution device, thereby improving its assembly efficiency.

[0098] The following detailed description, in conjunction with the accompanying drawings, illustrates the structure of the thermal management device provided in the embodiments of this application, as well as the structure of the battery pack and electrical equipment having the thermal management device.

[0099] Reference Figures 1 to 6 As shown in the figure, this application embodiment provides a power distribution device 100, which may include: a housing 110, a plurality of connecting bars, and a plurality of electrical components. The housing 110 may have a mounting cavity 111 inside. The connecting bars may be, for example, metal bars.

[0100] The mounting cavity 111 is provided to accommodate and protect electrical components, and the electrical components are provided to control the circuit disconnection or connection between the battery module and the load of the electrical device.

[0101] In this embodiment, the connecting strip can be integrally injection molded with the housing 110, and at least one end of the connecting strip can be disposed at the bottom of the housing 110. At least a portion of the electrical components can be located within the mounting cavity 111, and the electrical components can be electrically connected to the connecting strip to form a first circuit among the plurality of electrical components.

[0102] See Figure 1 and Figure 2 As shown in the embodiments of this application, the power distribution device 100 may further include: a circuit board 140, wherein, as Figure 6 and Figure 7As shown, the circuit board 140 can be disposed at one end of the mounting cavity 111 away from the bottom of the housing 110, and electrical components can be electrically connected to the circuit board 140 to form a second circuit between the multiple electrical components and the circuit board 140.

[0103] By integrally injection molding the connecting strip and the housing 110, the whole formed by the connecting strip and the housing 110 can be used as the mounting reference for electrical components. The electrical components are at least partially installed in the mounting cavity 111 and electrically connected to the connecting strip. This can simultaneously achieve mechanical fixation of the electrical components to the housing 110 and electrical connection between the electrical components and the connecting strip, thereby effectively reducing the assembly difficulty of the power distribution device 100.

[0104] Therefore, the power distribution device 100 provided in this application embodiment has a lower installation difficulty and a higher assembly efficiency.

[0105] In this embodiment, the connecting bar can be embedded inside the housing 110.

[0106] In the embodiments of this application, the electrical components and the connecting blocks can be welded together.

[0107] In this embodiment of the application, the electrical components and the circuit board 140 may be connected by soldering.

[0108] It should be understood that, compared to other connection methods, laser welding of electrical components to connectors and to circuit board 140 can effectively reduce the contact impedance between the two devices, and the welded connection strength is high, which can prevent the circuit from being broken due to poor contact between the two devices.

[0109] See Figure 7 and Figure 8 As shown, in this embodiment of the application, the plurality of electrical components may include at least: a main positive relay 131 and a main negative relay 132, see [link to relevant documentation]. Figure 4 and Figure 5 As shown, the multiple connection bars may include at least: a first connection bar 121 and a second connection bar 122, wherein one end of the first connection bar 121 can be electrically connected to one end of the main positive relay 131, and the other end of the first connection bar 121 can be electrically connected to an external circuit; one end of the second connection bar 122 can be electrically connected to the main negative relay 132, and the other end of the second connection bar 122 can be electrically connected to an external circuit.

[0110] In some embodiments, the other end of the second connection bar 122 may be electrically connected to an external shunt, for example. This application does not limit this to the above examples.

[0111] See Figure 7 and Figure 8 As shown in the embodiments of this application, the plurality of electrical components may further include: a main fuse element 133, wherein one end of the main fuse element 133 may be electrically connected to the other end of the first connection bar 121, and the other end of the main fuse element 133 may be electrically connected to an external circuit (see...). Figure 11 (As shown).

[0112] It is understood that, in the embodiments of this application, see Figure 6 As shown, along the length of the housing 110, the main positive relay 131 and the main negative relay 132 can be arranged adjacent to each other, and the main fuse element 133 can be arranged adjacent to at least one of the main positive relay 131 and the main negative relay 132.

[0113] See Figure 7 and Figure 8 As shown in the embodiments of this application, the multiple electrical components may further include: a fast charging component, wherein the fast charging component may be electrically connected to the main positive relay 131 and the main negative relay 132 respectively, and the fast charging component may also be electrically connected to an external circuit.

[0114] Specifically, in this embodiment, the fast charging component may include: a fast charging positive relay 134 and a fast charging negative relay 135, see [link to relevant documentation]. Figure 4 and Figure 5 As shown, the multiple connection bars may further include: a third connection bar 123, a fourth connection bar 124, a fifth connection bar 125, and a sixth connection bar 126. One end of the third connection bar 123 may be electrically connected to the other end of the main positive relay 131, the other end of the third connection bar 123 may be electrically connected to one end of the fast charging positive relay 134, one end of the fourth connection bar 124 may be electrically connected to the other end of the fast charging positive relay 134, and the other end of the fourth connection bar 124 may be electrically connected to an external circuit.

[0115] In this embodiment, one end of the fifth connecting strip 125 can be electrically connected to the other end of the main negative relay 132, the other end of the fifth connecting strip 125 can be electrically connected to one end of the fast charging negative relay 135, one end of the sixth connecting strip 126 can be electrically connected to the other end of the fast charging negative relay 135, and the other end of the sixth connecting strip 126 can be electrically connected to an external circuit.

[0116] It is understood that, in some embodiments, see Figure 6 As shown, along the length of the housing 110, the fast charging positive relay 134 and the fast charging negative relay 135 can be arranged adjacent to each other.

[0117] See Figure 7 and Figure 8As shown in the embodiments of this application, the plurality of electrical components may further include: a current boosting component, wherein the current boosting component may be electrically connected to the first connection bar 121 and the external circuit respectively.

[0118] Specifically, in the embodiments of this application, the current boosting component may include: a current boosting relay 136, see [link to relevant documentation]. Figure 4 and Figure 5 As shown, the plurality of connection bars may further include a seventh connection bar 127, wherein one end of the seventh connection bar 127 may be electrically connected to the current booster relay 136, and the other end of the seventh connection bar 127 may be electrically connected to an external circuit.

[0119] Furthermore, in some embodiments, the boost relay 136 may also be electrically connected to the first connection bar 121.

[0120] See Figure 7 and Figure 8 As shown in the embodiments of this application, the plurality of electrical components may further include a heating assembly, wherein the heating assembly may be electrically connected to the circuit board.

[0121] Specifically, in this embodiment of the application, the heating component may include a heating relay 137, wherein the heating relay 137 may be electrically connected to the circuit board 140, and the heating relay 137 may be disposed on the side of the circuit board 140 facing the mounting cavity 111.

[0122] See Figure 7 and Figure 8 As shown in the embodiment of this application, the heating assembly may further include a heating fuse element 138, wherein the heating fuse element 138 may be electrically connected to the circuit board 140, and the heating fuse element 138 may be disposed on the side of the circuit board 140 facing the mounting cavity 111. At this time, a third circuit is formed between the heating relay 137, the heating fuse element 138 and the circuit board 140.

[0123] See Figure 4 and Figure 5 As shown in the embodiments of this application, the plurality of connection bars may further include: an eighth connection bar 128, wherein one end of the eighth connection bar 128 may be electrically connected to the circuit board 140, and the other end of the eighth connection bar 128 may be electrically connected to an external circuit.

[0124] It should be noted that, in the embodiments of this application, the first connecting row 121, the second connecting row 122, the third connecting row 123, the fourth connecting row 124, the fifth connecting row 125, the sixth connecting row 126, the seventh connecting row 127, and the eighth connecting row 128 can be metal connecting rows.

[0125] like Figure 9 and Figure 10As shown in the embodiment of this application, the mounting cavity 111 may include the following mutually separated cavities: a first cavity 1111, a second cavity 1112, a third cavity 1113, a fourth cavity 1114, a fifth cavity 1115, a sixth cavity 1116, and a seventh cavity 1117. The main positive relay 131 may be located in the first cavity 1111, the main negative relay 132 may be located in the second cavity 1112, the main fuse element 133 may be located in the third cavity 1113, the fast charging positive relay 134 may be located in the fourth cavity 1114, the fast charging negative relay 135 may be located in the fifth cavity 1115, the current boost relay 136 may be located in the sixth cavity 1116, and the heating relay 137 may be located in the seventh cavity 1117.

[0126] In this way, the main positive relay 131, main negative relay 132, main fuse element 133, fast charging positive relay 134, fast charging negative relay 135, current booster relay 136, and heating relay 137 can be respectively housed in different cavities of the mounting cavity 111. This facilitates the positioning of the main positive relay 131, main negative relay 132, main fuse element 133, fast charging positive relay 134, fast charging negative relay 135, current booster relay 136, and heating relay 137, and also facilitates the connection of the main positive relay 131, main negative relay 132, main fuse element 133, fast charging positive relay 134, fast charging negative relay 135, current booster relay 136, and heating relay 137 to the connecting bar, thereby reducing the assembly difficulty of the power distribution device 100 and improving the assembly efficiency of the power distribution device 100.

[0127] In addition, it is understandable that, such as Figure 8 As shown in the embodiments of this application, the main positive relay 131, the main negative relay 132, the fast charging positive relay 134, the fast charging negative relay 135, and the boost relay 136 may each have a high-voltage connection terminal and a low-voltage connection terminal.

[0128] Specifically, the high-voltage connection terminal may include a first high-voltage connection terminal 1311 and a second high-voltage connection terminal 1312, wherein the first high-voltage connection terminal 1311 may be, for example, a high-voltage positive connection terminal, and the second high-voltage connection terminal 1312 may be a high-voltage negative connection terminal. The low-voltage connection terminal may include a first low-voltage connection terminal 1313 and a second low-voltage connection terminal 1314, wherein the first low-voltage connection terminal 1313 may be, for example, a low-voltage positive connection terminal, and the second low-voltage connection terminal 1314 may be a low-voltage negative connection terminal.

[0129] Continue to refer to Figure 9 and Figure 10As shown in the embodiments of this application, the power distribution device 100 may further include: at least one sampling component 150, wherein one end of each sampling component 150 may be electrically connected to any one of the plurality of connection bars, and the other end of each sampling component 150 may be electrically connected to the circuit board 140.

[0130] In this embodiment of the application, the power distribution device 100 may further include a heat dissipation component 160, wherein the heat dissipation component 160 may be disposed at the bottom of the housing 110, and the connection bar may be located between the heat dissipation component 160 and the circuit board 140.

[0131] It is understood that, in the embodiments of this application, at least one end of each connection bar may be in contact with the heat dissipation assembly 160.

[0132] The close contact between the two improves the heat dissipation of the connector, thus enabling the heat dissipation component 160 to effectively dissipate heat from the connector.

[0133] Specifically, see Figure 3 and Figure 6 As shown in the embodiments of this application, the heat dissipation component 160 may include: a heat-conducting component 161 and a heat dissipation component 162, wherein the heat-conducting component 161 may be disposed between the heat dissipation component 162 and the connecting bar.

[0134] It should be noted that, in the embodiments of this application, the heat sink 162 can be a liquid cooling plate or an air supply component, etc.

[0135] Taking the heat sink 162 as a liquid cooling plate as an example, at this time, one side of the heat conductor 161 is in thermal contact with the connecting bar, and the other side of the heat conductor 161 is in thermal contact with the heat sink 162, which can improve the heat dissipation effect of the power distribution device 100.

[0136] This application embodiment also provides a battery pack, which may include a battery module and the aforementioned power distribution device 100, wherein the power distribution device 100 may be electrically connected to the battery module.

[0137] The power distribution device 100 is used to control the circuit connection and disconnection between the battery module and the electrical device, to precharge the input capacitor of the electrical device, and to prevent surge current from damaging the electrical device. The power distribution device 100 can also quickly disconnect the circuit and provide safety isolation to prevent further damage when a fault (such as short circuit, over-temperature, over-voltage, etc.) is detected.

[0138] By incorporating the aforementioned power distribution device 100 into the battery pack, the performance of the battery pack can be improved.

[0139] In addition, this application embodiment also provides an electrical energy device, which may include an electrical device and the battery pack described above, or the electrical energy device may include the power distribution device 100 described above.

[0140] For example, the electrical equipment can be a vehicle, the electrical device can be an electric motor, and the battery pack can provide electrical energy to the electric motor, thereby driving the vehicle.

[0141] Taking a vehicle as an example, the electrical equipment can be a sedan, bus, or truck. For instance, the vehicle can be an electric vehicle (EV), a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle, or any vehicle with a battery pack.

[0142] The vehicle may also include a body, axles, and a motor, wherein the battery pack, axles, and motor may all be mounted on the body. The battery pack may be electrically connected to the motor, and the motor may be connected to the axle. The battery pack provides power to the motor, enabling it to rotate. During rotation, the motor drives the axle to rotate, thus allowing the vehicle to move.

[0143] The vehicle body may include a vehicle chassis and a body mounted on the chassis. The body may have a passenger compartment, which may include a driver's seat, passenger seats, etc., where the driver can operate the vehicle. For example, the vehicle body may also include structural components such as a steering wheel, clutch, and brakes to enable the vehicle to perform its full functions; this application does not impose any limitations on these components.

[0144] Alternatively, electrical equipment can also include ships, aircraft, electronic terminal equipment, electrical equipment, and energy storage equipment, which will not be described in detail here.

[0145] By incorporating the aforementioned battery pack into the electrical equipment, the performance of the electrical equipment can be improved.

[0146] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0147] In the description of this utility model, it should be understood that the terms "may include" and "have" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0148] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," etc., 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.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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. Such 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 utility model.

Claims

1. A power distribution device, characterized in that, include: A housing, the interior of which has a mounting cavity; Multiple connecting bars, wherein the connecting bars are integrally injection molded with the housing, and at least one end of the connecting bar is disposed at the bottom of the housing; A plurality of electrical components, at least a portion of which are located within the mounting cavity and are electrically connected to the connection drain, thereby forming a first circuit among the plurality of electrical components; The circuit board is disposed at one end of the mounting cavity away from the bottom of the housing; the electrical components are electrically connected to the circuit board to form a second circuit between the plurality of electrical components and the circuit board.

2. The power distribution device according to claim 1, characterized in that, The connecting strip is embedded inside the housing.

3. The power distribution device according to claim 1, characterized in that, The electrical components are welded to the connecting bar.

4. The power distribution device according to claim 1, characterized in that, The electrical components are soldered to the circuit board.

5. The power distribution device according to any one of claims 1-4, characterized in that, The plurality of electrical components include at least: a main positive relay and a main negative relay; the plurality of connection blocks include at least: a first connection block and a second connection block; One end of the first connecting bar is electrically connected to one end of the main positive relay, and the other end of the first connecting bar is electrically connected to an external circuit; one end of the second connecting bar is electrically connected to the main negative relay, and the other end of the second connecting bar is electrically connected to an external circuit.

6. The power distribution device according to claim 5, characterized in that, The plurality of electrical components further include: a main fuse element; one end of the main fuse element is electrically connected to the other end of the first connecting bar, and the other end of the main fuse element is electrically connected to the external circuit.

7. The power distribution device according to claim 6, characterized in that, The plurality of electrical components further include: a fast charging assembly; the fast charging assembly is electrically connected to the main positive relay and the main negative relay respectively; the fast charging assembly is also electrically connected to the external circuit.

8. The power distribution device according to claim 7, characterized in that, The fast charging component includes a fast charging positive relay and a fast charging negative relay; the plurality of connection bars also includes a third connection bar, a fourth connection bar, a fifth connection bar, and a sixth connection bar; One end of the third connecting bar is electrically connected to the other end of the main positive relay, and the other end of the third connecting bar is electrically connected to one end of the fast charging positive relay; one end of the fourth connecting bar is electrically connected to the other end of the fast charging positive relay, and the other end of the fourth connecting bar is electrically connected to the external circuit. One end of the fifth connecting bar is electrically connected to the other end of the main negative relay, and the other end of the fifth connecting bar is electrically connected to one end of the fast charging negative relay; one end of the sixth connecting bar is electrically connected to the other end of the fast charging negative relay, and the other end of the sixth connecting bar is electrically connected to the external circuit.

9. The power distribution device according to claim 8, characterized in that, The plurality of electrical components further include: a current boosting assembly; the current boosting assembly is electrically connected to the first connection bar and the external circuit respectively.

10. The power distribution device according to claim 9, characterized in that, The current boosting component includes: a current boosting relay; the plurality of connection bars further includes: a seventh connection bar; One end of the seventh connecting bar is electrically connected to the current booster relay, and the other end of the seventh connecting bar is electrically connected to the external circuit; Furthermore, the current-boosting relay is also connected to the first connection drain.

11. The power distribution device according to claim 10, characterized in that, The plurality of electrical components also include: a heating assembly; the heating assembly is electrically connected to the circuit board.

12. The power distribution device according to claim 11, characterized in that, The heating component includes a heating relay; the heating relay is electrically connected to the circuit board, and the heating relay is disposed on the side of the circuit board facing the mounting cavity.

13. The power distribution device according to claim 12, characterized in that, The heating assembly further includes a heating fuse element; the heating fuse element is electrically connected to the circuit board, and the heating fuse element is disposed on the side of the circuit board facing the mounting cavity; A third circuit is formed between the heating relay, the heating fuse element, and the circuit board.

14. The power distribution device according to claim 12, characterized in that, The plurality of connection bars further includes an eighth connection bar; one end of the eighth connection bar is electrically connected to the circuit board, and the other end of the eighth connection bar is electrically connected to the external circuit.

15. The power distribution device according to any one of claims 8-14, characterized in that, Along the length of the housing, the main positive relay and the main negative relay are arranged adjacent to each other, and the main fuse element is arranged adjacent to at least one of the main positive relay and the main negative relay; and / or, Along the length of the housing, the fast charging positive relay and the fast charging negative relay are arranged adjacent to each other.

16. The power distribution device according to any one of claims 1-4, characterized in that, Also includes: At least one sampling component; one end of each sampling component is electrically connected to any one of the plurality of connection rows, and the other end of each sampling component is electrically connected to the circuit board.

17. The power distribution device according to any one of claims 1-4, characterized in that, Also includes: Heat dissipation assembly; the heat dissipation assembly is disposed at the bottom of the housing, and the connecting bar is located between the heat dissipation assembly and the circuit board.

18. The power distribution device according to claim 17, characterized in that, At least one end of each of the connection rows is in contact with the heat dissipation assembly.

19. The power distribution device according to claim 17, characterized in that, The heat dissipation component includes a heat-conducting element and a heat dissipation element, wherein the heat-conducting element is disposed between the heat dissipation element and the connecting bar.

20. The power distribution device according to claim 19, characterized in that, The heat dissipation component is a liquid cooling plate; or, the heat dissipation component is an air supply component.

21. A battery pack, characterized in that, It includes a battery module and a power distribution device as described in any one of claims 1-20, wherein the power distribution device is electrically connected to the battery module.

22. An electrical energy device, characterized in that, It includes an electrical device and the battery pack as described in claim 21; or, it includes the power distribution device as described in any one of claims 1-20.

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