Power distribution system, battery pack and electrical apparatus

Abstract

A power distribution system, a battery pack and an electrical apparatus. The power distribution system comprises at least one power distribution unit (10), and each power distribution unit (10) comprises a housing assembly (1), an internal element (2), and a heat-conducting member (3), wherein the internal element (2) is arranged in the housing assembly (1), and at least one internal element (2) is provided; and the heat-conducting member (3) is at least partially exposed from the housing assembly (1), and the part of the heat-conducting member (3) facing inside the housing assembly (1) is in contact with the at least one internal element (2). By means of the above arrangement, the heat generated by the internal element during operation is conducted to the outside of the housing assembly by means of the heat-conducting member, thereby achieving heat dissipation and cooling of the internal element and avoiding an excessive temperature rise in the internal element and the whole housing assembly. The heat-conducting member is at least partially arranged outside the housing assembly, which can avoid same occupying a relatively large space inside the housing assembly, thereby achieving the effects of reducing the size of the whole battery pack and improving the capacity of the battery pack; moreover, the heat-conducting member located outside the housing assembly has a larger heat dissipation space, which facilitates the dissipation or conduction of heat on the heat-conducting member, thereby improving the heat dissipation performance of the power distribution unit and ensuring safe and reliable operation of the power distribution unit.

Description

Power distribution system, battery pack and electrical equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 30, 2024, with application number 202422415471.0. The entire contents of the above application are incorporated by reference into this application.

[0002] Technical Field

[0003] The present application relates to the field of battery technology, for example, to a power distribution system, a battery pack and electrical equipment.

[0004] Background Art

[0005] The battery pack's power distribution system includes distribution units, such as the Battery Disconnect Unit (BDU). The BDU, also known as the high-voltage box, is located inside the battery case along with the battery module. It is used to connect or disconnect the battery pack from high voltage power and is crucial to the safety of the battery pack.

[0006] Technical issues

[0007] When the distribution unit is working, its internal components will generate heat. If the temperature rise is too high, its current carrying capacity will be reduced, thereby affecting the performance of the distribution unit and further affecting the safety and stability of the entire battery pack.

[0008] Regarding the heat dissipation of the power distribution unit, in the related art, a plurality of liquid cooling plates are provided in the housing of the power distribution unit, and the plurality of liquid cooling plates achieve heat dissipation by contacting a plurality of components inside the power distribution unit.

[0009] The related technology has the following defects: on the one hand, the multiple liquid cooling plates arranged in the distribution unit shell will occupy the internal space of the distribution unit, resulting in an increase in the volume of the entire distribution unit, and thus occupying more internal space of the battery pack; on the other hand, the internal components and liquid cooling plates of the distribution unit are all located inside the shell of the distribution unit, and the internal space of the shell is limited, which is not conducive to the heat dissipation of the distribution unit.

[0010] Technical Solutions

[0011] In a first aspect, the present application provides a power distribution system, comprising at least one power distribution unit, the power distribution unit comprising:

[0012] housing assembly;

[0013] an internal component, disposed in the housing assembly and provided with at least one internal component;

[0014] The heat conducting member is at least partially exposed outside the housing assembly, and a portion of the heat conducting member facing the inside of the housing assembly contacts at least one internal component.

[0015] In a second aspect, the present application provides a battery pack, including a battery module and a power distribution system, wherein the battery module is electrically connected to the power distribution system.

[0016] In a third aspect, the present application provides an electrical device, including electrical components and a battery pack, wherein the battery pack is configured to provide electrical energy to the electrical components.

[0017] Beneficial effects

[0018] The present application provides a power distribution system and a battery pack including the power distribution system. The power distribution unit of the power distribution system is provided with at least one internal component. The internal component generates heat when the power distribution unit is in operation. By providing a heat conductor in contact with the internal component and exposing the heat conductor at least partially outside the shell assembly of the power distribution unit, the heat generated by the internal component during operation is conducted to the outside of the shell assembly through the heat conductor, thereby achieving heat dissipation and cooling of the internal component, and avoiding excessive temperature rise of the internal component and the entire shell assembly. The heat conductor is at least partially arranged outside the shell assembly. On the one hand, it can avoid occupying more space inside the shell assembly, which is conducive to reducing the size of the entire shell assembly, reducing the space occupied by the power distribution unit, saving materials, and thus achieving the effect of reducing the size of the entire battery pack and increasing the capacity of the battery pack; on the other hand, the heat conductor located outside the shell assembly has a larger heat dissipation space, which facilitates the heat dissipation or conduction of the heat on the heat conductor, effectively improving the heat dissipation performance of the power distribution unit, and ensuring the safe and reliable operation of the power distribution unit.

[0019] The electrical equipment provided in this application can ensure continuous and reliable power supply to electrical components and reduce heat generation during the power supply process. Since it has a high-capacity battery pack, it can increase the power supply time for electrical components, and the electrical equipment has a long battery life, thereby improving practicality.

[0020] BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of the structure of a power distribution system provided by some implementations of the present application;

[0022] FIG2 is a first exploded schematic diagram of a battery disconnection unit provided by some implementations of the present application;

[0023] FIG3 is a schematic diagram of internal components and heat conducting members of a battery disconnect unit provided by some implementations of the present application;

[0024] FIG4 is a second exploded schematic diagram of a battery disconnection unit provided by some implementations of the present application;

[0025] FIG5 is a schematic structural diagram of a second housing of a battery disconnection unit provided in some implementations of the present application;

[0026] FIG6 is a cross-sectional schematic diagram of a second housing of a battery disconnection unit provided in some implementations of the present application;

[0027] FIG7 is a schematic diagram of the installation of a connection row of a battery disconnect unit provided in some implementations of the present application within a second housing;

[0028] FIG8 is an exploded schematic diagram of a boost unit provided in some implementations of the present application;

[0029] FIG9 is a schematic diagram of internal components and heat conducting members of a boost unit provided by some implementations of the present application;

[0030] FIG10 is a cross-sectional view of a boost unit provided by some implementations of the present application;

[0031] FIG11 is a schematic diagram of a connection between a battery module and a power distribution system provided by some implementations of the present application;

[0032] FIG12 is a schematic diagram of the structure of a battery pack and electrical components provided by some implementations of the present application;

[0033] Figure 13 is a schematic diagram of the fast charging interface and boost circuit provided by some implementations of the present application.

[0034] In the picture:

[0035] 10. Power distribution unit; 110. Battery disconnect unit; 120. Voltage boost unit;

[0036] 1. Housing assembly; 2. Internal components; 3. Heat conducting parts; 4. Circuit board; 5. Heat dissipation module;

[0037] 11. First housing; 12. Second housing; 121. Limiting groove; 122. Embedding channel; 13. Third housing; 14. Fourth housing; 15. Bottom cover; 151. Accommodation hole; 152. Heat dissipation hole; 16. First buckle; 161. Buckle cavity; 17. Second buckle; 18. Mounting slot;

[0038] 20. Battery management system; 21. Electronic components; 22. Connector bar; 221. Heat dissipation unit; 222. Mounting unit; 23. Filter module;

[0039] 30. Copper busbar; 31. First bonding portion; 32. Second bonding portion;

[0040] 40. Power distribution system; 41. Battery module; 42. Battery pack; 43. Electrical components; 44. Cooling plate; 45. Fast charging interface; 46. Boost circuit.

[0041] Modes for Carrying Out the Invention

[0042] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., regarding orientations or positions, are based on the orientations or positions shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0045] In this embodiment, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0046] In the embodiments of the present application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0047] As shown in FIG1 , this embodiment provides a power distribution system, including at least one power distribution unit 10 . The power distribution unit 10 includes a housing assembly 1 , internal components 2 , and a heat conducting member 3 .

[0048] The housing assembly 1 defines a chamber configured to house an internal component 2. The internal component 2 is disposed within the chamber of the housing assembly 1, and at least one internal component 2 is provided. The phrase "at least one" indicates that the housing assembly 1 may contain one or more internal components 2. A heat conductor 3 is at least partially exposed outside the housing assembly 1, and the portion of the heat conductor 3 facing the interior of the housing assembly 1 contacts the at least one internal component 2.

[0049] The internal component 2 generates heat when the power distribution unit 10 is operating. By providing a heat conductor 3 in contact with the internal component 2 and exposing the heat conductor 3 at least partially outside the shell assembly 1 of the power distribution unit 10, the heat generated by the internal component 2 during operation is conducted to the outside of the shell assembly 1 through the heat conductor 3, thereby achieving heat dissipation and cooling of the internal component 2, and avoiding excessive temperature rise inside the internal component 2 and the entire shell assembly 1. Providing the heat conductor 3 at least partially outside the shell assembly 1 can, on the one hand, avoid occupying more space inside the shell assembly 1, which is conducive to reducing the size of the entire shell assembly 1, reducing the space occupied by the power distribution unit 10, saving materials, and thus achieving the effect of reducing the size of the entire battery pack and increasing the battery pack capacity; on the other hand, the heat conductor 3 located outside the shell assembly 1 has a larger heat dissipation space, which facilitates the dissipation or conduction of heat on the heat conductor 3, effectively improving the heat dissipation performance of the power distribution unit 10, and ensuring the safe and reliable operation of the power distribution unit 10.

[0050] As shown in Figure 13, in this embodiment, the power distribution system also includes a fast charging interface 45 and a boost circuit 46, and the fast charging interface 45 is electrically connected to the boost circuit 46. The fast charging interface 45 is configured to be plugged into an ordinary charging plug in a charging station, such as the charging plug of a 400V charging pile. There are multiple distribution units 10, see Figure 1, where two distribution units 10 are respectively a battery disconnect unit 110 (BDU, also commonly known as a high-voltage box) and a boost unit 120, and the battery disconnect unit 110 and the boost unit 120 are both provided on the boost circuit 46. The boost unit 120 is configured to increase the voltage. When the user needs to perform 800V fast charging, the charging plug of the 400V charging pile is plugged into the fast charging interface 45, and the voltage is boosted by the boost unit 120 on the boost circuit 46 to meet the 800V high-voltage fast charging requirement. By setting up the boost unit 120, it can be ensured that conventional charging piles meet the 800V fast charging requirements, reducing users' charging anxiety caused by the small number of 800V high-voltage fast charging piles in new energy vehicle charging stations and the long time spent in searching for corresponding charging piles in advance.

[0051] During fast charging, the current is high, and the boost unit 120 and battery disconnect unit 110 generate more heat. Therefore, the heat conducting member 3 of the boost unit 120 and battery disconnect unit 110 that contacts the internal components 2 is at least partially located outside the housing assembly 1. This helps accelerate the heat dissipation and cooling of the internal components 2 and the entire interior of the housing assembly 1. Figures 2 to 7 are schematic diagrams of the battery disconnect unit 110. Figures 8 to 10 are schematic diagrams of the boost unit 120.

[0052] Referring to Figures 2 and 4 , the housing assembly 1 of the battery disconnect unit 110 includes a first housing 11 and a second housing 12 that, when engaged, define a chamber for mounting the internal components 2. A first latch 16 is provided on one of the first and second housings 11, 12, and a second latch 17 is provided on the other. The first latch 16 is elastically deformable and defines a cavity 161. When the first and second housings 11, 12 are engaged, the first latch 16 elastically deforms, allowing the second latch 17 to engage with the cavity 161 of the first latch 16.

[0053] Referring to Figures 2 and 3 , the internal components 2 of the battery disconnect unit 110 include electronic components 21 and a connecting bar 22. The connecting bar 22 is electrically connected to the electronic components 21 and is also connected to external leads (such as the copper bar 30 in Figure 1 ) on the battery disconnect unit 110. Exemplary connecting bars 22 include conductive copper bars, conductive aluminum bars, etc. The electronic components 21 of the battery disconnect unit 110 include control switches (such as relays) that open and close multiple circuits, overcurrent fuses, and other components. During operation, the connecting bar 22 generates a significant amount of heat.

[0054] In this embodiment, the connection bar 22 is embedded in the second shell 12 of the shell assembly 1 and contacts the heat conducting member 3 , so that the heat conducting member 3 conducts the heat on the connection bar 22 to the outside of the shell assembly 1 .

[0055] Referring to Figures 4, 5, 6, and 7, a retaining groove 121 is recessed into the outer wall of the second housing 12 of the housing assembly 1. The connecting bar 22 is partially retained within the retaining groove 121 and in contact with the heat conducting member 3. The retaining groove 121 not only retains the connecting bar 22, ensuring its secure installation on the second housing 12, but also allows the portion of the connecting bar 22 retained within the retaining groove 121 to be exposed through the bottom of the housing assembly 1 and to directly contact the heat conducting member 3, thereby increasing the heat dissipation and cooling rate of the connecting bar 22.

[0056] Referring to Figure 7 , the connecting bar 22 includes a heat dissipation portion 221 and a mounting portion 222, which are connected and arranged at an angle. The heat dissipation portion 221 is embedded in the limiting groove 121 and is configured to contact the heat conducting member 3 to achieve heat dissipation and temperature reduction. The mounting portion 222 is embedded in the interior of the second housing 12. Referring to Figure 6 , the second housing 12 is provided with an embedding channel 122 that communicates with the limiting groove 121. The mounting portion 222 is embedded in this embedding channel 122 to ensure a stable installation of the connecting bar 22.

[0057] For example, referring to Figures 6 and 7, mounting portions 222 are provided at both ends of the heat dissipation portion 221, and correspondingly, embedded channels 122 are provided at both ends of the limiting groove 121 of the second shell 12, and the mounting portions 222 at both ends of the heat dissipation portion 221 are embedded in the two embedded channels 122 one by one.

[0058] In some embodiments, referring to Figures 2 and 4 , the thermal conductive member 3 of the battery disconnect unit 110 includes a first and second connecting portions 31, 32. The first and second connecting portions 31, 32 enclose a groove configured to retain the housing assembly 1. The housing assembly 1 is in contact with the inner wall of the groove. The grooved thermal conductive member 3 not only improves the secure attachment of the thermal conductive member 3 to the housing assembly 1 after installation, but also increases the contact area between the thermal conductive member 3 and the housing assembly 1, allowing the thermal conductive member 3 to fully contact all the connection rows 22 at the bottom of the second housing 12, thereby improving heat dissipation efficiency and uniformity.

[0059] In other embodiments, referring to FIG3 , the heat conductive member 3 of the battery cut-off unit 110 is in sheet shape, and the heat conductive member 3 is attached to the internal component 2, or the heat conductive member 3 is attached to the shell assembly 1 and the internal component 2. For example, the heat conductive member 3 includes a plurality of heat conductive sheets, and a heat conductive sheet can be provided for each connection row 22 exposed through the limiting groove 121 of the second shell 12, and the heat conductive sheet is attached to the corresponding connection row 22 to achieve heat dissipation of the connection row 22. Alternatively, as shown in FIG3 , the heat conductive member 3 covers the entire surface of the second shell 12, and is in contact with the outer surface of the second shell 12 and the connection row 22 stuck in the limiting groove 121 at the same time. Alternatively, the heat conductive member 3 includes a plurality of heat conductive sheets, a portion of which is in contact with the connection row 22 stuck in the limiting groove 121, and another portion is in contact with the outer surface of the second shell 12.

[0060] Figures 8, 9, and 10 illustrate schematic structural diagrams of the boost unit 120. The housing assembly 1 of the boost unit 120 includes a third housing 13, a fourth housing 14, and a bottom cover 15. The third housing 13 and the bottom cover 15 are respectively fastened to opposite sides of the fourth housing 14 to enclose a chamber configured to house the internal components 2. A first snap 16 is provided on one of the third housing 13 and the fourth housing 14, and a second snap 17 is provided on the other. The first snap 16 is elastically deformable and has a cavity 161. When the third housing 13 is fastened to the fourth housing 14, the first snap 16 elastically deforms to allow the second snap 17 to engage with the cavity 161 of the first snap 16. Similarly, a first snap 16 is provided on one of the fourth housing 14 and the bottom cover 15, and a second snap 17 is provided on the other to engage with the first snap 16.

[0061] Exemplarily, multiple first clips 16 are circumferentially arranged on the third shell 13 and the bottom cover 15, and multiple second clips 17 are circumferentially arranged on the upper and lower ends of the fourth shell 14. The first clips 16 are engaged with the corresponding second clips 17 to achieve the connection between the third shell 13, the fourth shell 14 and the bottom cover 15.

[0062] Referring to Figures 8 and 9 , the internal components 2 of the boost unit 120 also include electronic components 21 and a connecting bar 22. The connecting bar 22 is electrically connected to the electronic components 21 and is configured to connect to external leads (such as the copper bar 30 in Figure 1 ) on the boost unit 120. Exemplary connecting bars 22 include conductive copper bars, conductive aluminum bars, etc. The boost unit 120 is provided with a battery high-voltage input and output. The electronic components 21 of the boost unit 120 include boosting components, relays for controlling on / off, and other components.

[0063] The internal components 2 of the boost unit 120 further include a filter module 23 , which is disposed on the boost circuit and can filter the boost circuit to reduce interference with the electronic components 21 .

[0064] Exemplarily, the filter module 23 is an electromagnetic ring filter.

[0065] When the boost unit 120 boosts the voltage of a common charging pile to 800V for charging, electromagnetic interference occurs during the boost process. By performing electromagnetic loop filtering on the boost circuit, interference with devices such as the Battery Management System 20 (BMS) is reduced, making the fast charging process safer and more stable.

[0066] 8 and 10 , an accommodating hole 151 is provided through the outer wall of the housing assembly 1 , which is configured to achieve contact between the heat conducting member 3 and the internal component 2 , thereby dissipating heat for the internal component 2 of the boost unit 120 .

[0067] In some embodiments, at least one internal component 2 is partially located within the receiving hole 151 and in contact with the thermal conductor 3. Referring to Figure 10, one end of the internal component 2 extends into the receiving hole 151 and abuts against the thermal conductor 3. The thermal conductor 3 is exposed through the receiving hole 151 and conducts heat to the outside of the housing assembly 1. It is understood that the thermal conductor 3 can be partially located within the receiving hole 151, that is, in this case, one end of the internal component 2 and a portion of the thermal conductor 3 are both located within the receiving hole 151 and abut against each other; alternatively, the internal component 2 passes through the receiving hole 151 to abut against the thermal conductor 3 outside the receiving hole 151.

[0068] In other embodiments, the internal component 2 can be completely located within the shell assembly 1 of the boost unit 120 without extending into the accommodating hole 151. At this time, a portion of the heat conductor 3 is exposed through the shell assembly 1, and the other portion passes through the accommodating hole 151 and contacts the internal component 2, thereby conducting the heat from the internal component 2.

[0069] It is understood that the boost unit 120 can also adopt the heat dissipation method used for the internal components 2 in the battery disconnect unit 110, that is, providing a limiting groove 121 on the housing assembly 1. The battery disconnect unit 110 can also adopt the heat dissipation method used for the internal components 2 in the boost unit 120, that is, providing an accommodating hole 151 on its housing assembly 1.

[0070] Referring to Figures 8 and 10 , the bottom cover 15 of the housing assembly 1 of the boost unit 120 is provided with heat dissipation holes 152, which are configured to quickly dissipate heat within the housing assembly 1, thereby improving heat dissipation. Optionally, heat dissipation holes 152 are provided on the bottom cover 15 directly opposite the internal components 2, thereby improving the heat dissipation efficiency of the internal components 2.

[0071] Regarding the battery disconnect unit 110 , heat dissipation holes 152 may also be provided on the housing assembly 1 thereof.

[0072] 2 and 8 , both the second housing 12 of the battery disconnect unit 110 and the fourth housing 14 of the boost unit 120 are provided with mounting grooves 18 for accommodating the internal components 2 .

[0073] Exemplarily, the heat conducting member 3 may be, but is not limited to, a thermally conductive silicone pad, a thermally conductive potting compound, and a heat dissipation fin.

[0074] As shown in Figure 11, this embodiment also provides a battery pack, including a box, a battery module 41 and a power distribution system 40. The battery module 41 and the power distribution system 40 are both installed inside the box, and the battery module 41 is electrically connected to the power distribution system 40, and the battery is charged and discharged through the power distribution system 40.

[0075] As shown in FIG11 , the battery pack further includes a cooling plate 44 configured to cool the battery module 41 , and the cooling plate 44 is installed inside the box.

[0076] In some embodiments, the power distribution unit 10 is placed on a cooling plate, and the heat conducting member 3 is in direct or indirect contact with the cooling plate. Heat generated by the internal components 2 of the power distribution unit 10 is conducted out through the heat conducting member 3, and then dissipated and cooled by direct or indirect contact with the cooling plate.

[0077] In this embodiment, both the battery disconnect unit 110 and the boost unit 120 are placed on the battery pack's cooling plate, with the thermally conductive member 3 at the bottom either in direct contact with the cooling plate or indirectly bonded to the cooling plate via a thermally conductive adhesive. The cooling plate removes heat from the thermally conductive member 3, thereby dissipating heat from the internal components 2 of the battery disconnect unit 110 and the boost unit 120.

[0078] 2 and 3 , a circuit board 4 is disposed within the housing assembly 1 of the battery disconnect unit 110, and the internal components 2 of the battery disconnect unit 110 are electrically connected to the circuit board 4. Referring to FIG8 and 9 , a circuit board 4 is also disposed within the housing assembly 1 of the boost unit 120, and the internal components 2 of the boost unit 120 are electrically connected to the circuit board 4.

[0079] For the battery disconnect unit 110 and boost unit 120, at least one internal component 2 is located on the side of the circuit board 4 facing the heat conductor 3. When the battery disconnect unit 110 and boost unit 120 are placed on a cooling plate, the internal component 2 located on the side of the circuit board 4 facing the heat conductor 3 is closer to the cooling plate, shortening the heat conduction path and ensuring heat dissipation from the bottom of the battery disconnect unit 110 and boost unit 120. For example, some or all of the electronic components 21 and connectors 22 are located on the side of the circuit board 4 facing the heat conductor 3, that is, some or all of the electronic components 21 and connectors 22 are arranged in an inverted manner, closer to the cooling plate, and achieving better heat dissipation.

[0080] In the embodiment, the heat conducting members 3 of the battery cut-off unit 110 and the boost unit 120 dissipate heat through the cooling plate of the battery pack, which can save space while ensuring the heat dissipation effect.

[0081] In other embodiments, referring to Figures 2 and 4 , a separate heat dissipation module 5 may be provided for the power distribution unit 10. The heat dissipation module 5 is located outside the housing assembly 1 and in contact with the heat conducting member 3. The heat generated by the internal components 2 is conducted to the heat conducting member 3, and the heat dissipation module 5 removes the heat from the heat conducting member 3.

[0082] For example, the heat dissipation module 5 can be a cold plate module, such as a liquid cold plate module, in which coolant flows through the module to dissipate heat and cool down the battery pack. The heat dissipation module 5 can be in contact with or not in contact with the battery pack's cooling plate, and the flow channels for the coolant within the heat dissipation module 5 can be connected or not connected to the internal flow channels of the cooling plate.

[0083] As shown in Figure 12, this embodiment also provides an electrical device, including an electrical component 43 and a battery pack 42. The battery pack 42 is configured to provide electrical energy to the electrical component 43. This electrical device can ensure continuous and reliable power supply to the electrical component and reduce heat generation during the power supply process. Due to the high-capacity battery pack, the power supply duration for the electrical component can be extended, and the electrical device has a long battery life and improved practicality.

[0084] Electrically powered equipment may include, but is not limited to, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, etc. For example, in the case of a vehicle, the battery pack serves as the vehicle's power system, providing electrical energy to the powered components to achieve their functions.

[0085] The battery pack described in the embodiments of the present application is not limited to being applicable to the electrical equipment described in the present application, but can also be applicable to all other electrical equipment that use batteries. However, for the sake of simplicity, the following explanation will be given using an electrical equipment such as a vehicle as an example.

[0086] The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery pack is provided inside the vehicle, and the battery pack can be provided at the bottom, head or tail of the vehicle. The battery pack can be provided to power the vehicle, for example, the battery pack can be used as an operating power source for the vehicle. The vehicle may also include a controller and a motor, and the controller is provided to control the battery pack to power the motor, for example, for the starting, navigation and working power requirements of the vehicle during driving. In the vehicle provided in this embodiment, the battery pack can continuously and reliably supply power to the electrical components, thereby increasing the power supply time for the electrical components, so that the vehicle has a high endurance, is more practical, and has a good user experience.

[0087] Other types of electrical equipment will not be given examples here.

Claims

1. A power distribution system comprising at least one power distribution unit (10), wherein the power distribution unit (10) comprises: Housing assembly (1); An internal element (2) is provided in the housing assembly (1) and at least one internal element (2) is provided; A heat conducting member (3) is at least partially exposed outside the housing assembly (1), and a portion of the heat conducting member (3) facing the inside of the housing assembly (1) is in contact with at least one of the internal components (2).

2. The power distribution system according to claim 1, wherein: An accommodating hole (151) is provided through the outer wall of the housing assembly (1); At least one of the internal components (2) is partially located in the accommodating hole (151), and the heat conducting member (3) is at least partially located in the accommodating hole (151) to fit the internal component (2) in the accommodating hole (151); or, the heat conducting member (3) passes through the accommodating hole (151) and contacts the internal component (2).

3. The power distribution system according to claim 1, wherein: The internal component (2) includes an electronic component (21) and a connecting bar (22), wherein the connecting bar (22) is electrically connected to the electronic component (21); The outer wall of the housing assembly (1) is recessed with a limiting groove (121), and the connection row (22) is partially clamped in the limiting groove (121) and in contact with the heat conducting member (3).

4. The power distribution system according to claim 1, wherein: The heat conducting member (3) comprises a first fitting portion (31) and a second fitting portion (32) connected to each other, wherein the first fitting portion (31) and the second fitting portion (32) surround and form a groove configured to hold the housing component (1), and the housing component (1) fits against an inner wall of the groove; Alternatively, the heat conducting member (3) is in sheet form, and the heat conducting member (3) is attached to the internal element (2) or to the housing assembly (1) and the internal element (2).

5. The power distribution system according to claim 1, wherein: The housing assembly (1) is provided with heat dissipation holes (152).

6. The power distribution system according to claim 1, wherein: The power distribution unit (10) further includes: A circuit board (4), the circuit board (4) being installed in the housing assembly (1) and electrically connected to the internal components (2), at least one of the internal components (2) being located on a side of the circuit board (4) facing the heat conducting member (3).

7. The power distribution system according to claim 1, wherein: The power distribution unit (10) further comprises a heat dissipation module (5), wherein the heat dissipation module (5) is located outside the housing assembly (1) and is in contact with the heat conducting member (3).

8. The power distribution system according to any one of claims 1 to 7, further comprising a fast charging interface (45) and a boost circuit (46), wherein the fast charging interface (45) is electrically connected to the boost circuit (46); a plurality of the power distribution units (10) are provided, wherein two of the power distribution units (10) are a battery disconnection unit (110) and a boost unit (120), respectively, and the battery disconnection unit (110) and the boost unit (120) are both provided on the boost circuit (46).

9. The power distribution system according to claim 8, wherein: The internal element (2) of the boost unit (120) includes a filter module (23), and the filter module (23) is arranged on the boost circuit.

10. A battery pack comprising a battery module (41) and a power distribution system (40) according to any one of claims 1 to 9, wherein the battery module (41) is electrically connected to the power distribution system (40).

11. The battery pack according to claim 10, further comprising a cooling plate (44) configured to cool the battery module (41), the power distribution unit (10) being placed on the cooling plate (44), and the heat conducting member (3) being in direct or indirect contact with the cooling plate (44).

12. An electrical device comprising an electrical component (43) and a battery pack (42) according to claim 10 or 11, wherein the battery pack (42) is configured to provide electrical energy to the electrical component (43).

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