Power distribution device, battery pack and electric equipment

Abstract

The utility model provides a power distribution device, a battery pack and electric equipment, and relates to the technical field of batteries. The power distribution device comprises a power distribution main body and a movable module, and the power distribution main body is provided with a power distribution circuit for realizing power distribution; the movable module comprises a high-voltage connector, the power distribution main body is connected with an external circuit through the high-voltage connector, and the movable module is detachably connected with the power distribution main body. According to the power distribution device, the battery pack and the electric equipment provided by the invention, through the separable design of the power distribution main body and the movable module in the power distribution device, the movable module can be replaced according to different vehicle types or connector types, the compatibility and universality of the power distribution device are improved, and the expandability of a power distribution system is ensured.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and in particular, to a power distribution device, a battery pack, and an electrical device. Background Art

[0002] With the development of automobiles, especially the popularization of new energy vehicles, the application of battery packs is becoming more and more extensive.

[0003] The battery pack includes a power distribution device, which is used to be responsible for the distribution, control, and protection of electric energy. However, conventional power distribution devices are usually integratedly designed for specific vehicle models and cannot meet the requirements of different connector types of multiple vehicle models, resulting in poor compatibility and limiting their versatility. Summary of the Utility Model

[0004] In view of the above problems, this application provides a power distribution device, a battery pack, and an electrical device, which improve compatibility and versatility and ensure the scalability of the power distribution system.

[0005] On the one hand, this application provides a power distribution device, including:

[0006] A power distribution main body, provided with a power distribution circuit for realizing power distribution;

[0007] An active module, including a high-voltage connector, the power distribution main body is connected to an external circuit through the high-voltage connector, and the active module is detachably connected to the power distribution main body.

[0008] The detachable design of the power distribution main body and the active module enables the active module to be replaced according to different vehicle models or connector types. When it is necessary to adapt to a new vehicle model or a new connector, only the active module needs to be replaced, without replacing the entire power distribution device, which improves the compatibility and versatility of the power distribution device and ensures the scalability of the power distribution system.

[0009] In a possible implementation, the active module at least includes a first type of active module and a second type of active module, and the first type of active module and the second type of active module are interchangeably connected to the power distribution main body.

[0010] The design of the first type of active module and the second type of active module enables the connection between them and the power distribution main body to be realized without adjusting the power distribution main body, which improves the interchangeability and adaptability of the active module, and further improves the market competitiveness.

[0011] In a possible implementation, the power distribution main body includes a first housing and first electrical components provided in the first housing;

[0012] The movable module includes a second housing and a second electrical component disposed in the second housing. When the movable module is connected to the power distribution main body, the first electrical component is electrically connected to the second electrical component.

[0013] Both the power distribution main body and the movable module adopt a modular design. In this way, each part can be independently manufactured, tested, and replaced, improving the reliability of the system. Since the movable module can be replaced, when new electrical functions need to be added, only the movable module containing the corresponding second electrical component needs to be replaced, reducing costs.

[0014] In a possible implementation, the power distribution main body further includes a first connection row disposed at one end of the first housing facing the movable module along a first direction. The movable module includes a second connection row disposed at one end of the second housing facing the power distribution main body along the first direction.

[0015] The first connection row is electrically connected to the first electrical component, and the second connection row is electrically connected to the second electrical component.

[0016] When the movable module is connected to the power distribution main body, the first connection row is electrically connected to the second connection row to electrically connect the first electrical component and the second electrical component.

[0017] When the movable module is connected to the power distribution main body, the first connection row is electrically connected to the second connection row to connect the first electrical component and the second electrical component. Exemplarily, a locking mechanism or the like can also be adopted between the first connection row and the second connection row to enhance the stability and reliability of the connection. When replacing or repairing an electrical component, only the connection between the first connection row and the second connection row needs to be disconnected, and then the corresponding electrical component can be replaced or repaired, simplifying the maintenance process.

[0018] In a possible implementation, the first connection row and the second connection row overlap along a second direction.

[0019] The first direction intersects the second direction.

[0020] The overlap between the first connection row and the second connection row realizes the full utilization of space and improves the compactness of the overall structure. In addition, the overlap design enables the replacement of the movable module by canceling the overlap in the second direction, replacing the corresponding module, and reconnecting, which is simple and convenient.

[0021] In a possible implementation, the first connection row is provided with a first connection hole penetrating along the second direction, and the second connection row is provided with a second connection hole penetrating along the second direction. The first connection hole and the second connection hole are opposite to each other.

[0022] The power distribution device further includes a first fastener passing through the first connection hole and the second connection hole to connect the first connection bar and the second connection bar.

[0023] When a component needs to be replaced or upgraded, the first connecting row and the second connecting row can be separated by simply loosening the fasteners, thereby canceling the electrical connection between the active module and the power distribution body. In addition, the fasteners can provide a certain clamping force to ensure stable electrical and mechanical contact between the connecting rows, thereby improving the connection reliability.

[0024] In a possible implementation, the active module is further provided with a first connecting member, the first connecting member is provided on the second shell, the first connecting member is provided on a side of the second connecting row away from the first connecting row, and the first fastener is connected to the first connecting member.

[0025] The first fastener is able to connect the second connection row and the first connection member, and finally connect the first connection row. The first connection member provides a positioning point for the first fastener, and further ensures the connection firmness between the first connection row and the second connection row through the cooperation of its thread and the fastener.

[0026] In a possible implementation, the first shell is provided with a first shell connecting portion, and the second shell is provided with a second shell connecting portion.

[0027] The first shell connecting portion and the second shell connecting portion are detachably connected.

[0028] The first shell and the second shell are connected in a detachable manner, so that the distribution body and the active module are further physically reinforced through the first shell connection part and the second shell connection part on the basis of the electrical connection between the first electrical component and the second electrical component, thereby ensuring a stable connection between the distribution body and the active module and improving the flexibility and maintainability of the distribution system.

[0029] In a possible implementation, the first connection row is located on a side of the first housing connection portion that faces the active module along the first direction.

[0030] The second shell connection portion is located on one side of the second connection row along the first direction facing the power distribution body.

[0031] When the active module is connected to the power distribution body, the first shell connection part and the second shell connection part are stacked and connected along the second direction, the first connection row and the second connection row are stacked and connected, and the first direction intersects with the second direction.

[0032] The relative positions of the first connection row, the first housing connection part, the second connection row, and the second housing connection part, as well as the connection methods between them, constitute the connection basis of the power distribution main body and the movable module, ensuring the stability of the electrical connection and the physical structure. In addition, it also makes the power distribution system have high flexibility.

[0033] In a possible implementation manner, a second connecting member is provided on the first housing connection part, and a fixing sleeve is provided on the second housing connection part.

[0034] A first threaded hole is provided inside the second connecting member, and a second threaded hole is provided inside the fixing sleeve.

[0035] The power distribution device further includes: a second fastener, and the second fastener passes through the first threaded hole and the second threaded hole to connect the first housing and the second housing.

[0036] By providing a second connecting member on the first housing connection part and a fixing sleeve on the second housing connection part, and using a second fastener to connect them, a firm and reliable connection is achieved between the first housing and the second housing of the power distribution system, improving the overall stability of the power distribution system and facilitating the maintenance and repair of the power distribution system.

[0037] In a possible implementation manner, there are multiple first electrical components, and the multiple first electrical components include at least one of a relay, a fuse, a pre-charge resistor, a shunt, and a circuit board. The multiple first electrical components constitute a power distribution circuit.

[0038] The multiple first electrical components together constitute a power distribution circuit, and the multiple first electrical components ensure the stability and safety of the power distribution circuit.

[0039] In a possible implementation manner, the first housing includes a first front shell, a first middle shell, and a first rear shell arranged in sequence along a second direction. Openings are provided at both ends of the first middle shell along the second direction, and the first front shell and the first rear shell respectively seal both ends of the first middle shell.

[0040] The first electrical component is arranged inside the first middle shell.

[0041] The first connection row extends out from the first middle shell along a first direction, and the first direction intersects with the second direction.

[0042] Through the hierarchical structure design of the first front shell, the first middle shell, and the first rear shell, the electrical components inside the first housing are protected, and it is also convenient for maintenance and repair, improving the reliability and service life of the power distribution device.

[0043] On the other hand, the present application provides a battery pack, including the power distribution device described in any one of the above possible implementation manners.

[0044] On yet another aspect, the present application provides an electrical device, including the battery pack described in the above possible implementation manners.

[0045] According to the power distribution device of the present application, the separable design of the power distribution main body and the movable module enables the movable module to be replaced according to different vehicle models or connector types. When it is necessary to adapt to a new vehicle model or a new connector, only the movable module needs to be replaced, without replacing the entire power distribution device, which improves the compatibility and versatility of the power distribution device and ensures the scalability of the power distribution system. Description of the Drawings

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0047] Figure 1 Structural schematic diagram of the power distribution device of the embodiment of the present application from the first angle;

[0048] Figure 2 Structural schematic diagram of the power distribution device of the embodiment of the present application from the second angle;

[0049] Figure 3 Structural schematic diagram of the power distribution device of the embodiment of the present application showing the first type of movable module and the second type of movable module;

[0050] Figure 4 Exploded view of the power distribution main body in the power distribution device of the embodiment of the present application;

[0051] Figure 5 Structural schematic diagram of the power distribution device of the embodiment of the present application from the third angle;

[0052] Figure 6 Structural schematic diagram of the power distribution device of the embodiment of the present application from the fourth angle;

[0053] Figure 7 Partial structural schematic diagram of the power distribution device of the embodiment of the present application;

[0054] Figure 8 Exploded view of the movable module in the power distribution device of the embodiment of the present application.

[0055] Explanation of the reference numerals:

[0056] 100 - Power distribution main body; 110 - First housing; 110a - First front housing; 110b - First middle housing; 110c - First rear housing; 111 - First outer housing connection part; 112 - Second connecting piece; 120 - First electrical component; 121 - Relay; 121a - Positive relay; 121b - Negative relay; 122 - Shunt; 122a - Positive shunt; 122b - Negative shunt; 123 - Circuit board; 130 - First connection row; 131 - First connection hole;

[0057] 200 - Movable module; 200a - First type of movable module; 200b - Second type of movable module; 210 - High - voltage connector; 220 - Second housing; 220a - Second front housing; 220b - Second middle housing; 220c - Second rear housing; 221 - First connecting piece; 2211 - Third connection hole; 222 - Second outer housing connection part; 223 - Fixed sleeve; 230 - Second connection row; 231 - Second connection hole;

[0058] 300 - First fastener;

[0059] 400 - Second fastener. Detailed implementation manner

[0060] In order to make the above - mentioned objects, features, and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0061] With the development of automobiles, new - energy vehicles are constantly popularized. New - energy vehicles include pure - electric vehicles, plug - in hybrid vehicles, etc. With the popularization of new - energy vehicles, the battery pack, as one of the core components of new - energy vehicles, is widely used in various electric vehicles, including sedans, trucks, buses, etc.

[0062] The battery pack includes a power distribution device, which is used to be responsible for the distribution, control, and protection of electric energy. Exemplarily, the power distribution device can be a battery disconnect unit (BDU). The battery disconnect unit is responsible for quickly cutting off the circuit when abnormal conditions such as over - charging, over - temperature, and over - current occur in the battery, protecting the battery and the entire electrical system from damage. In addition, the battery disconnect unit controls the charging and discharging processes of the electric vehicle to ensure the normal operation of the electrical system. Additionally, the battery disconnect unit is also used to monitor parameters such as the voltage and current of the battery pack, and transmit abnormal information to other battery management systems through a communication interface to achieve the monitoring and protection of electric energy.

[0063] However, conventional power distribution devices, such as battery pack disconnect units, are usually designed integrally for a specific vehicle model and cannot adapt to the requirements of different connector types or different installation positions of multiple vehicle models. Their compatibility is poor, which limits their versatility.

[0064] In addition, if multiple power distribution devices are designed according to different connector types or different installation positions, there are problems such as a long design cycle, high costs for mold design and manufacturing, low cost performance, and waste of manpower and material resources.

[0065] Regarding conventional power distribution devices, some researchers have designed a modular battery pack disconnect unit structure, which includes a positive electrode module and a negative electrode module. However, this design is only applicable to some battery pack disconnect units with high-voltage connectors in the middle, and a bridge connection is required between the two modules, which cannot be compatible with the current package types with connectors on both sides, and the versatility is low.

[0066] In view of this, the present application provides a power distribution device, a battery pack, and an electrical device. Through the separable design of the power distribution main body and the movable module, the movable module can be replaced according to different vehicle models or connector types. When it is necessary to adapt to a new vehicle model or a new connector, only the movable module needs to be replaced, without replacing the entire power distribution device, which improves the compatibility and versatility of the power distribution device and ensures the scalability of the power distribution system.

[0067] The following Figures 1 - 8 will be used to describe in detail the power distribution device provided by the embodiments of the present application.

[0068] In the embodiments of the present application, with reference to Figure 1 and Figure 2 shown, x is the first direction and y is the second direction.

[0069] A power distribution device provided in this embodiment. Exemplarily, the power distribution device can be a battery pack disconnect unit (BDU). With reference to Figure 1 and Figure 2 shown, the power distribution device includes a power distribution main body 100 and a movable module 200. Among them, the power distribution main body 100 is provided with a power distribution circuit for realizing power distribution. The movable module 200 includes a high-voltage connector 210. The power distribution main body 100 is connected to an external circuit through the high-voltage connector 210, and the movable module 200 is separably connected to the power distribution main body 100. Exemplarily, the separable connection method between the movable module 200 and the power distribution main body 100 can include a mechanical locking structure, an electrical connection structure, etc., to ensure the physical and electrical connection between the two.

[0070] It can be seen that the separable design of the power distribution main body 100 and the movable module 200 enables the movable module 200 to be replaced according to different vehicle models or connector types. When it is necessary to adapt to a new vehicle model or a new connector, only the movable module 200 needs to be replaced, without replacing the entire power distribution device, improving the compatibility and versatility of the power distribution device and ensuring the scalability of the power distribution system.

[0071] In addition, compared with the traditional integrated design, the modular design of the power distribution device reduces the cost and time for customized design for different vehicle models, and also enables the power distribution device to be flexibly arranged according to the actual installation space, improving the space utilization rate of the battery pack, further enhancing the overall performance of the battery pack and the user experience of new energy vehicles. In addition, the modular design also realizes the adaptability between the power distribution device and the production mold, meeting the usage requirements of some customers.

[0072] In addition, for the traditional integrated power distribution device design, the electrical creepage distance needs to be checked throughout the body after completion. Compared with the traditional design in this embodiment, when the power distribution main body 100 has been checked, only the movable module 200 and the electrical connection area need to be checked to complete the check, saving time and labor costs.

[0073] In some embodiments, in combination with Figure 1 and Figure 3 , the movable module 200 at least includes a first type of movable module 200a and a second type of movable module 200b, and the first type of movable module 200a and the second type of movable module 200b are connected to the power distribution main body 100 in a mutually replaceable manner. The designs of the first type of movable module 200a and the second type of movable module 200b enable the connection between them and the power distribution main body 100 to be realized without adjusting the power distribution main body 100, improving the interchangeability and adaptability of the movable module 200, and thus enhancing the market competitiveness.

[0074] In addition, optionally, the movable module 200 may further include a third type of module and a fourth type of module, etc., which are connected to the power distribution main body 100 in a mutually replaceable manner. The design of multiple types of movable modules 200 enables the power distribution device to be adapted to multiple types of vehicle models and connectors, enhancing the flexibility and versatility of the power distribution device.

[0075] In addition, during the maintenance process, if a certain movable module 200 fails or is damaged, the maintenance personnel can replace the corresponding module without disassembling or replacing the entire power distribution device, improving the maintenance efficiency. In addition, when new technologies or new standards emerge, new movable modules 200 can be designed accordingly to adapt to the changes without re-designing the entire power distribution device, saving the design cost.

[0076] In some embodiments, in combination with Figure 1 and Figure 4, the power distribution main body 100 includes a first housing 110 and a first electrical component 120 disposed within the first housing 110; the movable module 200 includes a second housing 220 and a second electrical component disposed within the second housing 220. When the movable module 200 is connected to the power distribution main body 100, the first electrical component 120 is electrically connected to the second electrical component. In this way, it is ensured that when the movable module 200 is connected to the power distribution main body 100, electrical connection between the two is achieved through the first electrical component 120 and the second electrical component, which is simple and efficient and helps to reduce the installation time.

[0077] In addition, both the power distribution main body 100 and the movable module 200 adopt a modular design. In this way, each part can be independently manufactured, tested, and replaced, improving the reliability of the system. Since the movable module 200 can be replaced, when new electrical functions need to be added, only the movable module 200 containing the corresponding second electrical component needs to be replaced, reducing the cost.

[0078] In some embodiments, in combination with Figure 5 and Figure 6 , the power distribution main body 100 further includes a first connection row 130, and the first connection row 130 is disposed at one end of the first housing 110 facing the movable module 200 along a first direction. The movable module 200 includes a second connection row 230, and the second connection row 230 is disposed at one end of the second housing 220 facing the power distribution main body 100 along the first direction. It can be seen that both the first connection row 130 and the second connection row 230 are arranged along the first direction, ensuring the alignment accuracy and convenience during their connection process. Exemplarily, there may be two first connection rows 130, and correspondingly, there are also two second connection rows 230, and the first connection row 130 and the second connection row 230 are opposite to each other in pairs.

[0079] The first connection row 130 is electrically connected to the first electrical component 120, and the second connection row 230 is electrically connected to the second electrical component. Exemplarily, electrical contacts or pins may be provided on the first connection row 130 and the second connection row 230 to ensure good contact and electrical conductivity.

[0080] When the movable module 200 is connected to the power distribution main body 100, the first connection row 130 is electrically connected to the second connection row 230 to electrically connect the first electrical component 120 and the second electrical component. Exemplarily, a locking mechanism or the like may also be adopted between the first connection row 130 and the second connection row 230 to enhance the stability and reliability of the connection. When the electrical component needs to be replaced or repaired, only the connection between the first connection row 130 and the second connection row 230 needs to be disconnected, and then the corresponding electrical component can be replaced or repaired, simplifying the maintenance process.

[0081] By respectively providing a first connection row 130 on the power distribution main body 100 and a second connection row 230 on the movable module 200, and achieving electrical connection between the two during connection, the connection reliability is ensured, and the reliability, maintainability, and expandability of the power distribution system are also improved.

[0082] In some embodiments, in combination with Figure 5 、 Figure 6 and Figure 8 , the first connection row 130 and the second connection row 230 overlap along the second direction, and the first direction (such as the x direction) intersects with the second direction (such as the y direction). That is, the first direction can be set at an angle with the second direction. In one example, the first direction can be perpendicular to the second direction.

[0083] In this way, overlap between the first connection row 130 and the second connection row 230 is achieved, making full use of the space, improving the compactness of the overall structure. In addition, the overlap design enables, when replacing the movable module 200, canceling the overlap in the second direction, then replacing the corresponding module, and reconnecting, which is simple and convenient.

[0084] In addition, the overlap design can provide a stable connection, reducing problems of poor contact caused by vibration or movement, and helping to maintain the stability of the electrical connection during long-term operation or under harsh environmental conditions.

[0085] It should be noted that the first connection row 130 and the second connection row 230 can achieve overlap and positioning through automated equipment, achieving rapid positioning of the connection points, reducing manual operation, and ensuring the operation efficiency.

[0086] In some embodiments, in combination with Figure 5 and Figure 6 , a first connection hole 131 penetrating along the second direction is provided on the first connection row 130, and a second connection hole 231 penetrating along the second direction is provided on the second connection row 230. The first connection hole 131 and the second connection hole 231 are opposite to each other. In this way, the first connection hole 131 and the second connection hole 231 are opposite to each other in the second direction. When the first connection row 130 and the second connection row 230 are aligned, the first connection hole 131 and the second connection hole 231 will correspond to each other, facilitating the installation of fasteners.

[0087] The power distribution device further includes a first fastener 300. The first fastener 300 passes through the first connection hole 131 and the second connection hole 231 to connect the first connection row 130 and the second connection row 230. Exemplarily, the first fastener 300 can be a bolt, a screw, or other types of fasteners, and can be specifically selected according to actual needs, which is not limited herein.

[0088] Thus, when a component needs to be replaced or upgraded, only the fastener needs to be loosened, and the first connection row 130 and the second connection row 230 can be separated, thereby canceling the electrical connection between the active module 200 and the power distribution main body 100. In addition, the fastener can provide a certain clamping force to ensure stable electrical and mechanical contact between the connection rows and improve the connection reliability.

[0089] In some embodiments, in combination with Figure 5 and Figure 6 , the active module 200 is further provided with a first connecting member 221. Optionally, the first connecting member 221 can be a nut member. The first connecting member 221 is arranged on the second housing 220. The first connecting member 221 is arranged on the side of the second connection row 230 facing away from the first connection row 130. A third connection hole 2211 opposite to the second connection hole 231 is defined inside the first connecting member 221. The first fastener 300 further passes through the third connection hole 2211 and is connected to the first connecting member 221. Correspondingly, the first fastener 300 is provided with a thread adapted to the first connecting member 221.

[0090] During the connection process, first, it is necessary to ensure that the first connection row 130 and the second connection row 230 are aligned so that the first connection hole 131 is opposite to the second connection hole 231. Subsequently, the first fastener 300 is passed through the second connection hole 231 and screwed into the third connection hole 2211 inside the first connecting member 221. As the fastener rotates, the thread of the fastener meshes with the thread of the first connecting member 221 until the required tightening force is reached.

[0091] Thus, the first fastener 300 can pass through the second connection hole 231 on the second connection row 230 and the third connection hole 2211 on the first connecting member 221 and finally be connected to the first connection hole 131 on the first connection row 130. The first connecting member 221 provides a positioning point for the first fastener 300 and further ensures the connection firmness of the first connection row 130 and the second connection row 230 through the cooperation of its thread and the fastener.

[0092] In some embodiments, in combination with Figure 5 , Figure 6 and Figure 7 , the first housing 110 is provided with a first outer housing connection portion 111, and the second housing 220 is provided with a second outer housing connection portion 222. The first outer housing connection portion 111 and the second outer housing connection portion 222 are detachably connected. Exemplarily, at least one of the first outer housing connection portion 111 and the second outer housing connection portion 222 can be provided with a flange, a slot, a threaded hole, a buckle or other types of connection elements to achieve detachable connection between the two. Specifically, it can be selected according to the actual situation and is not limited here.

[0093] The first housing 110 and the second housing 220 are connected in a detachable manner, so that on the basis of the electrical connection between the power distribution main body 100 and the movable module 200 between the first electrical component 120 and the second electrical component, physical reinforcement is further achieved through the first housing connection portion 111 and the second housing connection portion 222, ensuring a stable connection between the power distribution main body 100 and the movable module 200, and improving the flexibility and maintainability of the power distribution system.

[0094] In some embodiments, in combination with Figure 5 , Figure 6 and Figure 8 , the first connection row 130 is located on the side of the first housing connection portion 111 facing the movable module 200 along the first direction, and the second housing connection portion 222 is located on the side of the second connection row 230 facing the power distribution main body 100 along the first direction. Thus, when the movable module 200 is connected to the power distribution main body 100, the first connection row 130 and the second connection row 230 will face each other along the first direction and achieve electrical connection.

[0095] When the movable module 200 is connected to the power distribution main body 100, the first housing connection portion 111 and the second housing connection portion 222 are arranged and connected in a stacked manner along the second direction, the first connection row 130 and the second connection row 230 are arranged and connected in a stacked manner, and the first direction intersects the second direction. Optionally, the first direction can be perpendicular to the second direction.

[0096] Thus, the design of the stacked arrangement between the first connection row 130 and the second connection row 230 ensures the compactness of the physical structure, provides stable support for the electrical connection, and in addition, the design of the stacked arrangement also helps to disperse the influence of external forces on the connection points and improve the overall reliability of the power distribution system.

[0097] Thus, the relative positions and connection manners of the first connection row 130, the first housing connection portion 111, the second connection row 230 and the second housing connection portion 222 constitute the connection basis of the power distribution main body 100 and the movable module 200, ensuring the stability of the electrical connection and the physical structure, and in addition, making the power distribution system have high flexibility.

[0098] In some embodiments, in combination with Figure 5 , Figure 6 and Figure 7, a second connecting member 112 is provided on the first housing connecting portion 111. Optionally, the second connecting member 112 is a nut member. A fixing sleeve 223 is provided on the second housing connecting portion 222. A first threaded hole is provided inside the second connecting member 112, and a second threaded hole is provided inside the fixing sleeve 223. Exemplarily, three second connecting members 112 may be provided, and correspondingly, three fixing sleeves 223 are also provided. The second connecting member 112 and the fixing sleeve 223 respectively provide connection points for the first housing 110 and the second housing 220, ensuring a stable connection between the first housing and the second housing. The first threaded hole and the second threaded hole together form a complete threaded channel, providing guidance for the second fastener 400 to ensure that the fastener can pass through smoothly and be correctly screwed into the threaded hole.

[0099] The power distribution device further includes: a second fastener 400. The second fastener 400 passes through the first threaded hole of the second connecting member 112 and the second threaded hole of the fixing sleeve 223 to connect the first housing 110 and the second housing 220. Exemplarily, the second fastener 400 may be a bolt, a screw, etc. The second fastener 400 passes through the first threaded hole and the second threaded hole, and connects the first housing 110 and the second housing 220 through the meshing action of the threads. This connection method is simple and reliable, enhancing the overall stability of the power distribution system.

[0100] In this way, by providing the second connecting member 112 on the first housing connecting portion 111, providing the fixing sleeve 223 on the second housing connecting portion 222, and connecting them with the second fastener 400, a firm and reliable connection is achieved between the first housing 110 and the second housing 220 of the power distribution system, improving the overall stability of the power distribution system, and also facilitating the maintenance and repair of the power distribution system.

[0101] In some embodiments, in combination with Figure 4 , there are multiple first electrical components 120. The multiple first electrical components 120 include at least one of a relay 121, a fuse, a pre-charge resistor, a shunt 122, and a circuit board 123. The multiple first electrical components 120 constitute a power distribution circuit.

[0102] Specifically, the relay 121 is an electrical control device. When the input quantity (such as voltage, current) reaches a specified value, it can make the controlled output circuit conduct or disconnect. In the power distribution circuit, the relay 121 is often used to achieve automatic control and protection of the circuit, such as overload protection, short-circuit protection, etc. Optionally, the relay 121 may include a positive relay 121a and a negative relay 121b. A fuse is an electrical component that ensures the safe operation of the circuit. When the current in the circuit is too large, the fuse will blow, thus cutting off the circuit to prevent equipment damage and accidents such as fires, to ensure the safety of the power distribution circuit.

[0103] The pre-charge resistor is mainly used to limit the inrush current generated when the circuit starts or is turned on. In a circuit with a large capacitive or inductive load, the pre-charge resistor can ensure that the current rises slowly, avoiding impact on other components in the circuit. The shunt 122 is an instrument for measuring direct current. In a power distribution circuit, the shunt 122 may be used to measure the current of a certain branch for monitoring, recording, or as part of a control signal. Optionally, the shunt 122 may include a positive shunt 122a and a negative shunt 122b.

[0104] The circuit board 123 is a support for electronic components and a carrier for the electrical interconnection of electronic components. Specifically, in a power distribution circuit, the circuit board 123 may integrate components such as the relay 121, fuse, pre-charge resistor, shunt 122 mentioned above, and other electronic components for realizing preset functions. In this way, multiple first electrical components 120 together constitute a power distribution circuit, and multiple first electrical components 120 ensure the stability and safety of the power distribution circuit.

[0105] In some embodiments, in combination with Figure 2 and Figure 4 , the first housing 110 includes a first front shell 110a, a first middle shell 110b, and a first rear shell 110c arranged in sequence along the second direction. Among them, openings are respectively provided at both ends of the first middle shell 110b along the second direction, and the first front shell 110a and the first rear shell 110c respectively seal both ends of the first middle shell 110b. The design of the openings allows the first front shell 110a and the first rear shell 110c to seal both ends of the first middle shell 110b, thereby forming a closed or semi-closed space.

[0106] The first electrical component 120 is arranged inside the first middle shell 110b. In this way, the first electrical component 120 is accommodated in the space jointly formed by the first front shell 110a, the first middle shell 110b, and the first rear shell 110c, and is protected by the first housing 110 from external interference or damage. This layout also facilitates the maintenance and replacement of the first electrical component 120. Only by opening or disassembling the first front shell 110a and the first rear shell 110c can the internal first electrical component 120 be accessed. The first connection row 130 extends from the first middle shell 110b along the first direction, and the first direction intersects the second direction. Optionally, the first direction may be perpendicular to the second direction. In this way, the electrical components inside the first housing 110 can be electrically connected to the outside through the first connection row 130.

[0107] In this way, through the layered structure design of the first front shell 110a, the first middle shell 110b, and the first rear shell 110c, the electrical components inside the first housing 110 are protected, and it is also convenient for maintenance and repair, improving the reliability and service life of the power distribution device.

[0108] In some embodiments, in combination with Figure 8 , the second housing 220 includes a second front housing 220a, a second middle housing 220b, and a second rear housing 220c arranged in sequence along a second direction. Among them, openings are respectively provided at both ends of the second middle housing 220b along the second direction, and the second front housing 220a and the second rear housing 220c respectively seal both ends of the second middle housing 220b. The design of the openings allows the second front housing 220a and the second rear housing 220c to seal both ends of the second middle housing 220b, thereby forming a closed or semi-closed space.

[0109] The high-voltage connector 210 and the second electrical component are arranged inside the second middle housing 220b. In this way, the high-voltage connector 210 and the second electrical component are accommodated in the space jointly formed by the second front housing 220a, the second middle housing 220b, and the second rear housing 220c, and are protected by the second housing 220 to avoid interference or damage caused by the external environment to them. This layout also facilitates the maintenance and replacement of the high-voltage connector 210 and the second electrical component. Only by opening or disassembling the second front housing 220a and the second rear housing 220c can the internal high-voltage connector 210 and the second electrical component be accessed. The second connection row 230 extends from the second middle housing 220b along the second direction. In this way, the electrical components inside the second housing 220 can be electrically connected to the outside through the second connection row 230.

[0110] In this way, through the hierarchical structure design of the second front housing 220a, the second middle housing 220b, and the second rear housing 220c, the electrical components inside the second housing 220 are protected, and it is also convenient for maintenance and repair, improving the reliability and service life of the power distribution device.

[0111] In addition, this embodiment also provides a battery pack, which may include the power distribution device in the above embodiment. The battery pack provided by the embodiments of the present application improves the versatility of the battery pack by integrating the power distribution device in the above embodiment.

[0112] In addition, this embodiment also provides an electrical device, which may include the battery pack in the above embodiment. The electrical device provided by this embodiment may be a vehicle (such as an electric vehicle or a hybrid vehicle), a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The embodiments of the present application do not impose special restrictions on the electrical device.

[0113] According to the electrical device of the embodiments of the present application, by providing the battery pack in the above embodiment, the power supply of the electrical device is ensured, and the distribution of electric energy, circuit protection, and intelligent management are also realized.

[0114] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0115] It should be noted that the embodiments referred to in the specification, such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining a specific feature, structure or characteristic with an embodiment, it is within the knowledge scope of those skilled in the art to implement such a feature, structure or characteristic in combination with other embodiments, whether explicitly or implicitly described.

[0116] Generally speaking, terms should be understood at least in part based on their use in the context. For example, at least in part according to the context, the term "one or more" used in the text can be used to describe any feature, structure or characteristic in the sense of a singular, or can be used to describe a combination of features, structures or characteristics in the sense of a plural. Similarly, at least in part according to the context, terms such as "a" or "the" can also be understood to convey a singular usage or a plural usage.

[0117] It should be easily understood that the terms "on", "above" and "over" in this disclosure should be interpreted in the broadest manner, so that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but also can include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0118] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power distribution device, characterized in that, include: A power distribution body, provided with a power distribution circuit for realizing power distribution; The active module comprises a high voltage connector, the power distribution body is connected to an external circuit via the high voltage connector, and the active module is detachably connected to the power distribution body.

2. The power distribution device according to claim 1, characterized in that The active modules at least include a first type of active modules and a second type of active modules, and the first type of active modules and the second type of active modules can be connected to the power distribution body interchangeably.

3. The power distribution device according to claim 1, characterized in that, The power distribution body includes a first housing and a first electrical component disposed in the first housing; The active module includes a second shell and a second electrical component provided in the second shell. When the active module is connected to the power distribution body, the first electrical component is electrically connected to the second electrical component.

4. The power distribution device according to claim 3, wherein, The power distribution body further includes a first connection row, which is disposed at one end of the first shell along the first direction toward the active module, and the active module includes a second connection row, which is disposed at one end of the second shell along the first direction toward the power distribution body. The first connecting bar is electrically connected to the first electrical component, and the second connecting bar is electrically connected to the second electrical component. When the active module is connected to the power distribution body, the first connection bar is electrically connected to the second connection bar to electrically connect the first electrical component and the second electrical component.

5. The power distribution device according to claim 4, characterized in that, The first connecting row and the second connecting row are overlapped along a second direction, The first direction intersects the second direction.

6. The power distribution device according to claim 5, characterized in that, The first connection row is provided with a first connection hole penetrating along the second direction, the second connection row is provided with a second connection hole penetrating along the second direction, the first connection hole is opposite to the second connection hole, The power distribution device further includes a first fastener passing through the first connection hole and the second connection hole to connect the first connection bar and the second connection bar.

7. The power distribution device according to claim 6, characterized in that: The movable module is further provided with a first connecting member, the first connecting member is provided on the second shell, the first connecting member is provided on a side of the second connecting row away from the first connecting row, and the first fastener is connected to the first connecting member.

8. The power distribution device according to any one of claims 4-7, characterized in that, The first shell is provided with a first shell connecting portion, and the second shell is provided with a second shell connecting portion. The first shell connecting portion and the second shell connecting portion are detachably connected.

9. The power distribution device according to claim 8, characterized in that, The first connection row is located on one side of the first shell connection portion along the first direction facing the active module. The second shell connection portion is located on one side of the second connection row along the first direction facing the power distribution body. When the active module is connected to the power distribution body, the first shell connection part and the second shell connection part are stacked and connected along the second direction, the first connection row and the second connection row are stacked and connected, and the first direction intersects with the second direction.

10. The power distribution device according to claim 9, characterized in that, The first shell connecting part is provided with a second connecting piece, and the second shell connecting part is provided with a fixing sleeve. The inner side of the second connecting member is provided with a first threaded hole, and the inner side of the fixing sleeve is provided with a second threaded hole. The power distribution device further includes: a second fastener that passes through the first threaded hole and the second threaded hole to connect the first housing and the second housing.

11. The power distribution device according to any one of claims 3-7, characterized in that, There are multiple first electrical components, and the multiple first electrical components include at least one of a relay, a fuse, a pre-charge resistor, a shunt, and a circuit board. The multiple first electrical components constitute the power distribution circuit.

12. The power distribution device according to any one of claims 4-7, characterized in that, The first housing includes a first front shell, a first middle shell, and a first rear shell arranged in sequence along a second direction. Both ends of the first middle shell in the second direction are provided with openings, and the first front shell and the first rear shell respectively seal both ends of the first middle shell. The first electrical component is disposed inside the first middle shell. The first connection row extends from the first middle shell along a first direction, and the first direction intersects with the second direction.

13. A battery pack, characterized in that, A power distribution device according to any one of claims 1-12.

14. An electrical device, characterized in that, A battery pack according to claim 13.

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