Power distribution system, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and discloses a power distribution system, a battery pack and electric equipment, the power distribution system comprises at least one power distribution unit, the power distribution unit comprises a shell assembly, at least one internal element and a heat conduction piece, and the internal element is arranged in the shell assembly; the heat conduction part is at least partially exposed out of the shell assembly and is in contact with at least one internal element, so that heat generated by the internal element during working is conducted to the outside of the shell assembly through the heat conduction part, heat dissipation and cooling of the internal element are achieved, and the internal temperature rise of the internal element and the whole shell assembly is prevented from being too high. At least part of the heat conduction piece is arranged outside the shell assembly, so that the situation that more space in the shell assembly is occupied can be avoided, and the effects of reducing the size of the whole battery pack and improving the capacity of the battery pack are achieved; moreover, the heat conduction member outside the housing assembly has a larger heat dissipation space, thereby facilitating the heat dissipation or conduction of the heat conduction member, improving the heat dissipation performance of the power distribution unit, and guaranteeing the safe and reliable operation of the power distribution unit.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a power distribution system, a battery pack and electrical equipment. Background Art

[0002] 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 housed within the battery case along with the battery modules. It connects and disconnects the battery pack from the high-voltage power supply and is crucial to the pack's safety. When operating, the internal components of each BDU generate heat. Excessive temperature rise reduces its current carrying capacity, impacting the BDU's performance and, consequently, the safety and stability of the entire battery pack.

[0003] Regarding heat dissipation of the power distribution unit, in the prior 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.

[0004] The existing 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 are all located inside the shell, and the internal space of the shell is limited, which is not conducive to the heat dissipation of the distribution unit. Utility Model Content

[0005] The purpose of the present utility model is to provide a power distribution system, a battery pack and electrical equipment, which can reduce the volume of the power distribution unit and reduce the space occupied by the power distribution unit while improving the heat dissipation performance of the power distribution unit and ensuring the safe and reliable operation of the power distribution unit, thereby achieving the effect of reducing the size of the entire battery pack and increasing the battery pack capacity.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, a power distribution system is provided, comprising at least one power distribution unit, wherein the power distribution unit comprises:

[0008] housing assembly;

[0009] an internal component, disposed in the housing assembly and provided with at least one internal component;

[0010] The heat conducting member is at least partially exposed outside the housing assembly and contacts at least one of the internal components.

[0011] As an optional solution of the power distribution system provided by the present invention, the outer wall of the housing assembly is provided with a receiving hole;

[0012] At least one of the internal components is partially located in the receiving hole and in contact with the heat conducting member; or the heat conducting member passes through the receiving hole and in contact with the internal component.

[0013] As an optional solution of the power distribution system provided by the present invention, the internal components include electronic components and connecting bars, and the connecting bars are electrically connected to the electronic components;

[0014] The outer wall of the shell assembly is recessed with a limiting groove, and the connecting row portion is clamped in the limiting groove and contacts the heat conducting member.

[0015] As an optional solution of the power distribution system provided by the present invention, the heat conducting member includes a first fitting portion and a second fitting portion connected to each other, the first fitting portion and the second fitting portion enclosing a groove for clamping the housing assembly, and the housing assembly is fitted with an inner wall of the groove;

[0016] Alternatively, the heat conducting member is in sheet form, and the heat conducting member is attached to the internal element or to the housing assembly and the internal element.

[0017] As an optional solution of the power distribution system provided by the present invention, heat dissipation holes are provided on the housing assembly.

[0018] As an optional solution of the power distribution system provided by the present invention, the power distribution unit further includes:

[0019] A circuit board is installed in the housing assembly and is electrically connected to the internal components. At least one of the internal components is located on a side of the circuit board facing the heat conducting member.

[0020] As an optional solution of the power distribution system provided by the present invention, the power distribution unit further includes a heat dissipation module, which is located outside the housing assembly and in contact with the heat conducting member.

[0021] As an optional solution of the power distribution system provided by the present invention, the power distribution system also includes a fast charging interface and a boost circuit, and the fast charging interface is electrically connected to the boost circuit; there are multiple power distribution units, two of which are a battery cut-off unit and a boost unit, and the battery cut-off unit and the boost unit are both arranged on the boost circuit.

[0022] As an optional solution of the power distribution system provided by the present invention, the internal components of the boost unit include a filter module, and the filter module is arranged on the boost circuit.

[0023] In a second aspect, a battery pack is provided, comprising a battery module and the power distribution system as described above, wherein the battery module is electrically connected to the power distribution system.

[0024] As an optional solution of the battery pack provided by the present invention, the battery pack also includes a cooling plate for cooling the battery module, the power distribution unit is placed on the cooling plate, and the heat conductor is in direct or indirect contact with the cooling plate.

[0025] In a third aspect, an electrical device is provided, comprising an electrical component and the battery pack as described above, wherein the battery pack is used to provide electrical energy to the electrical component.

[0026] Beneficial effects of the utility model:

[0027] The utility model 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 conductive member in contact with the internal component and at least partially exposing the heat conductive member 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 conductive member, 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 conductive member 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 conductive member located outside the shell assembly has a larger heat dissipation space, which facilitates the heat dissipation or conduction of the heat on the heat conductive member, effectively improving the heat dissipation performance of the power distribution unit, and ensuring the safe and reliable operation of the power distribution unit.

[0028] The electrical equipment provided by the present invention can ensure continuous and reliable power supply to electrical components and reduce heat generation during the power supply process. Since it is equipped with the above-mentioned high-capacity battery pack, it can increase the power supply time for electrical components, and the electrical equipment has a long endurance, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative work.

[0030] Figure 1 It is a structural diagram of a power distribution system provided by a specific embodiment of the utility model;

[0031] Figure 2 This is a first exploded schematic diagram of a battery disconnect unit provided in a specific embodiment of the present utility model;

[0032] Figure 3 It is a schematic diagram of the internal components and heat conducting member of the battery disconnect unit provided by a specific embodiment of the present utility model;

[0033] Figure 4 This is a second exploded schematic diagram of a battery disconnect unit provided in a specific embodiment of the present invention;

[0034] Figure 5 This is a structural schematic diagram of the second housing of the battery disconnection unit provided in a specific embodiment of the present utility model;

[0035] Figure 6 It is a cross-sectional schematic diagram of the second housing of the battery disconnection unit provided in a specific embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the installation of the connection row of the battery disconnect unit provided by the specific embodiment of the utility model in the second housing;

[0037] Figure 8 This is an exploded schematic diagram of a boost unit provided in a specific embodiment of the present utility model;

[0038] Figure 9 It is a schematic diagram of the internal components and heat conducting parts of the boost unit provided by a specific embodiment of the present utility model;

[0039] Figure 10 It is a cross-sectional view of a boost unit provided in a specific embodiment of the present utility model.

[0040] In the picture:

[0041] 10. Power distribution unit; 110. Battery disconnect unit; 120. Voltage boost unit;

[0042] 1. Housing assembly; 2. Internal components; 3. Heat conducting parts; 4. Circuit board; 5. Heat dissipation module;

[0043] 11. First housing; 12. Second housing; 13. Third housing; 14. Fourth housing; 15. Bottom cover; 16. First buckle; 161. Card cavity; 17. Second buckle; 18. Mounting slot;

[0044] 21. Electronic components; 22. Connecting strips; 23. Filter modules;

[0045] 221. heat dissipation unit; 222. mounting unit;

[0046] 151. Accommodation hole; 152. Heat dissipation hole;

[0047] 121. Limiting groove; 122. Embedded channel;

[0048] 31. First laminating portion; 32. Second laminating portion;

[0049] 20. Battery management system; 30. Copper busbar. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0051] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; 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 utility model based on the specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. 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.

[0053] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to 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 invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0054] 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 simultaneously, and B exists alone. In addition, the character " / " in this utility model generally indicates that the related objects are in an "or" relationship.

[0055] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted.

[0056] like Figure 1 As shown, this embodiment provides a power distribution system, including at least one power distribution unit 10 , wherein the power distribution unit 10 includes a housing assembly 1 , internal components 2 and a heat conducting member 3 .

[0057] The housing assembly 1 defines a chamber for mounting 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 only one internal component 2 or multiple internal components 2. The heat conductor 3 is at least partially exposed outside the housing assembly 1 and contacts at least one internal component 2.

[0058] 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.

[0059] At present, there are relatively few 800V high-voltage fast charging piles in new energy vehicle charging stations. For new energy vehicles that require 800V fast charging, it is necessary to find the corresponding charging piles in advance, which is time-consuming and causes charging anxiety for users.

[0060] In this embodiment, the power distribution system further includes a fast charging interface and a boost circuit, and the fast charging interface is electrically connected to the boost circuit. The fast charging interface is used to plug into a common charging plug in a charging station, such as a charging plug of a 400V charging pile. The power distribution unit 10 is provided with multiple, see Figure 1, where the two power distribution units 10 are a battery disconnect unit 110 (BDU, also commonly referred to as a high-voltage box) and a boost unit 120, and both the battery disconnect unit 110 and the boost unit 120 are arranged on the boost circuit. The boost unit 120 is used to increase the voltage. When the user needs to perform 800V fast charging, the charging plug of the 400V charging pile is inserted into the fast charging interface, and the voltage is boosted through the boost unit 120 on the boost circuit to meet the 800V high-voltage fast charging requirements. By setting the boost unit 120, it can be ensured that conventional charging piles meet the 800V fast charging requirements, reducing user charging anxiety.

[0061] During fast charging, the current is large, and the heat generated on the boost unit 120 and the battery cut-off unit 110 is greater. Therefore, the heat conducting member 3 on the boost unit 120 and the battery cut-off unit 110 that contacts the internal component 2 is at least partially arranged outside the housing assembly 1, which helps to accelerate the heat dissipation and cooling of the internal component 2 and the entire housing assembly 1. Figures 2 to 7 As shown in FIG, it is a schematic diagram of the battery disconnection unit 110. Figures 8 to 10 , which is a schematic diagram of the boost unit 120 .

[0062] See also Figure 2 and Figure 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. Furthermore, a first latch 16 is provided on one of the first housing 11 and the second housing 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 and 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.

[0063] See also Figure 2 and Figure 3 The internal components 2 of the battery disconnect unit 110 include an electronic component 21 and a connecting bar 22. The connecting bar 22 is electrically connected to the electronic component 21 and is used to connect to the external leads of the battery disconnect unit 110 (such as Figure 1 The connecting bar 22 is connected to the copper busbar 30 in the battery disconnect unit 110. Exemplary connecting bars 22 may be conductive copper or aluminum. The electronic components 21 of the battery disconnect unit 110 include control switches (such as relays) that control the opening and closing of each path, overcurrent fuses, and the like. When the battery disconnect unit 110 is operating, a significant amount of heat is generated on the connecting bar 22.

[0064] 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 .

[0065] See also Figure 4 、 Figure 5 、 Figure 6 as well as Figure 7 The outer wall of the second housing 12 of the housing assembly 1 is provided with a retaining groove 121. 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 secures 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.

[0066] Further, see Figure 7 The connecting row 22 includes a heat dissipation portion 221 and a mounting portion 222 that are connected and arranged at an angle. The heat dissipation portion 221 is embedded in the limiting groove 121 and is used to contact the heat conducting member 3 to achieve heat dissipation and cooling. The mounting portion 222 is embedded in the interior of the second housing 12. Figure 6 The second shell 12 is provided with an embedding channel 122 communicating with the limiting groove 121 , and the mounting portion 222 is embedded in the embedding channel 122 to achieve a stable installation of the connecting row 22 .

[0067] For example, see Figure 6 and Figure 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.

[0068] In some embodiments, see Figure 2 and Figure 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 form a groove for retaining 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, ensuring full contact between the thermal conductive member 3 and the housing assembly 1, thereby improving heat dissipation efficiency and uniformity.

[0069] In other embodiments, see Figure 3 The heat conducting member 3 of the battery disconnect unit 110 is in sheet form and is attached to the internal component 2, or the heat conducting member 3 is attached to the housing assembly 1 and the internal component 2. For example, the heat conducting member 3 includes a plurality of heat conducting sheets, and a heat conducting sheet can be provided for each connection row 22 exposed through the limiting groove 121 of the second housing 12. The heat conducting sheet is attached to the corresponding connection row 22 to achieve heat dissipation of the connection row 22. Or, as Figure 3 As shown, the heat conducting member 3 covers the entire surface of the second housing 12, and is in contact with both the outer surface of the second housing 12 and the connection row 22 retained within the retaining groove 121. Alternatively, the heat conducting member 3 includes a plurality of heat conducting sheets, some of which are in contact with the connection row 22 retained within the retaining groove 121, while others are in contact with the outer surface of the second housing 12.

[0070] like Figure 8 、 Figure 9 as well as Figure 10 , shows a schematic structural diagram 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 for mounting the internal components 2. Furthermore, 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 so that the second snap 17 engages 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 that engages with the first snap 16 is provided on the other.

[0071] 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.

[0072] See also Figure 8 and Figure 9 The internal components 2 of the boost unit 120 also include electronic components 21 and connecting bars 22. The connecting bars 22 are electrically connected to the electronic components 21, and the connecting bars 22 are used to connect to the external leads of the boost unit 120 (such as Figure 1 The connecting bar 22 is exemplarily a conductive copper bar, a conductive aluminum bar, or the like. 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 the like.

[0073] Furthermore, the internal components 2 of the boost unit 120 further include a filter module 23 , which is provided on the boost circuit and can filter the boost circuit to reduce interference with related electronic components 21 .

[0074] Exemplarily, the filter module 23 is an electromagnetic ring filter.

[0075] When the boost unit 120 boosts the voltage of an ordinary charging pile to 800V for charging, there is electromagnetic interference in the boost process. By performing electromagnetic loop filtering on the boost circuit, interference to devices such as the battery management system 20 (BMS) is reduced, making the fast charging process safer and more stable.

[0076] See also Figure 8 and Figure 10 The outer wall of the shell assembly 1 is provided with an accommodating hole 151 for achieving 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.

[0077] In some embodiments, at least one internal component 2 is partially located in the receiving hole 151 and contacts the heat conducting member 3. Figure 10 One end of the internal component 2 extends into the receiving hole 151 and abuts against the heat conducting member 3. The heat conducting member 3 is exposed through the receiving hole 151 and conducts heat to the outside of the housing assembly 1. It is understood that the heat conducting member 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 heat conducting member 3 are both located within the receiving hole 151 and abut against each other; or the internal component 2 passes through the receiving hole 151 to abut against the heat conducting member 3 outside the receiving hole 151.

[0078] 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.

[0079] It is understood that the boost unit 120 can also adopt the heat dissipation method used for the internal components 2 of 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 of the boost unit 120, that is, providing an accommodating hole 151 on its housing assembly 1.

[0080] See also Figure 8 and Figure 10 The bottom cover 15 of the boost unit 120 housing assembly 1 is provided with heat dissipation holes 152 for quickly dissipating 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 to further improve the heat dissipation efficiency of the internal components 2.

[0081] Of course, for the battery disconnect unit 110 , heat dissipation holes 152 may also be provided on the housing assembly 1 thereof.

[0082] See also Figure 2 and Figure 8The second housing 12 of the battery disconnect unit 110 and the fourth housing 14 of the boost unit 120 are both provided with mounting grooves 18 for accommodating the internal components 2 .

[0083] 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.

[0084] This embodiment also provides a battery pack, including a box, a battery module and the power distribution system as described above. The battery module and the power distribution system are both installed inside the box, and the battery module is electrically connected to the power distribution system, and the battery is charged and discharged through the power distribution system.

[0085] The battery pack also includes a cooling plate for cooling the battery module, which is installed inside the box.

[0086] 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 away through the heat conducting member 3, and further dissipated and cooled by direct or indirect contact with the cooling plate.

[0087] 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.

[0088] See also Figure 2 and Figure 3 The housing assembly 1 of the battery disconnect unit 110 is provided with a circuit board 4, and the internal components 2 of the battery disconnect unit 110 are electrically connected to the circuit board 4. Figure 8 and Figure 9 A circuit board 4 is also provided in 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 .

[0089] 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 bottom heat dissipation of the battery disconnect unit 110 and boost unit 120. Specifically, 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, placing some or all of the electronic components 21 and connectors 22 in an inverted arrangement, closer to the cooling plate and achieving better heat dissipation.

[0090] In the above embodiment, the heat conducting members 3 of the battery disconnect 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.

[0091] In other embodiments, see Figure 2 and Figure 4 A separate heat dissipation module 5 can be provided for the power distribution unit 10. The heat dissipation module 5 is located outside the housing assembly 1 and contacts 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.

[0092] 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 within the heat dissipation module 5 for circulating the coolant can be connected or not connected to the internal flow channels of the cooling plate.

[0093] This embodiment also provides an electrical device comprising electrical components and the aforementioned battery pack, which is used to provide electrical energy to the electrical components. This electrical device ensures continuous and reliable power supply to the electrical components while reducing heat generation during power supply. Due to the high-capacity battery pack, the power supply duration for the electrical components is increased, resulting in a longer battery life and improved practicality for the electrical device.

[0094] 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.

[0095] The battery pack described in the embodiment of the present invention is not limited to being applicable to the above-mentioned electrical equipment, but can also be applied to all other electrical equipment that use batteries. However, for the sake of simplicity, the following only uses one electrical equipment, such as a vehicle, as an example for explanation.

[0096] 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 used 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. The controller is used to control the battery pack to power the motor, for example, for starting, navigating and driving the vehicle. 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.

[0097] Other types of electrical equipment will not be given examples here.

[0098] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A power distribution system, characterized in that: The invention comprises at least one power distribution unit (10), wherein the power distribution unit (10) comprises: Housing assembly (1); an internal element (2), disposed in the housing assembly (1) and provided with at least one internal element; A heat conducting member (3) is at least partially exposed outside the housing assembly (1) and is in contact with at least one of the internal components (2).

2. The power distribution system according to claim 1, characterized in that An accommodating hole (151) is provided through the outer wall of the housing assembly (1); At least one of the internal elements (2) is partially located in the accommodating hole (151) and is in contact with the heat-conducting member (3); or, the heat-conducting member (3) passes through the accommodating hole (151) and is in contact with the internal element (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); A limiting groove (121) is recessed on the outer wall of the housing assembly (1), 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 a groove for clamping the housing component (1), and the housing component (1) fits against the 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, characterized in that: 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 comprises: A circuit board (4) is installed in the housing assembly (1) and is electrically connected to the internal components (2), and at least one of the internal components (2) is located on a side of the circuit board (4) facing the heat conducting member (3).

7. The power distribution system according to claim 1, characterized in that: 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, characterized in that: The power distribution system further comprises a fast charging interface and a boost circuit, wherein the fast charging interface is electrically connected to the boost circuit; a plurality of the power distribution units (10) are provided, wherein two of the power distribution units (10) are respectively a battery disconnection unit (110) and a boost unit (120), and both the battery disconnection unit (110) and the boost unit (120) are provided on the boost circuit.

9. The power distribution system according to claim 8, characterized in that: 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, characterized in that: It comprises a battery module and a power distribution system as described in any one of claims 1 to 9, wherein the battery module is electrically connected to the power distribution system.

11. The battery pack according to claim 10, characterized in that: The battery pack further comprises a cooling plate for cooling the battery module, the power distribution unit (10) is placed on the cooling plate, and the heat conducting member (3) is in direct or indirect contact with the cooling plate.

12. Electrical equipment, characterized in that: The device comprises an electrical component and a battery pack as claimed in claim 10 or 11, wherein the battery pack is used to provide electrical energy to the electrical component.

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