Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, and belongs to the technical field of batteries, the battery pack has a first direction and comprises a box body, a beam body, a battery pack, a battery management assembly and a wire harness assembly, the box body is provided with a containing cavity, and the beam body is arranged in the containing cavity and connected with the box body; the battery pack is arranged in the containing cavity and arranged on one side of the beam body in the first direction. The battery management assembly is arranged in the accommodating cavity and is arranged on one side, far away from the battery pack, of the beam body along the first direction; a wiring space is formed among the battery management assembly, the beam body and the battery pack; the wire harness assembly is partially arranged in the wiring space and connected with the beam body, and the wire harness assembly is electrically connected with the battery pack and the battery management assembly. According to the battery pack, the wiring harness assembly is arranged in the wiring space formed among the battery management assembly, the beam body and the battery pack, so that the space in the battery pack is effectively optimized compared with a manner that the wiring space is independently arranged in the accommodating cavity, and the energy density of the battery pack is favorably improved.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack and an electrical device. Background Technology

[0002] Battery packs require wiring harnesses for signal transmission and charging / discharging. Currently, battery packs typically have reserved space for wiring harnesses. However, wiring harnesses for different functional modules within the battery pack are usually wired independently, resulting in a larger required wiring space, which is detrimental to improving the volumetric energy density of the battery pack. Utility Model Content

[0003] The purpose of this utility model is to provide a battery pack that solves the problem that the wiring space inside the existing battery pack is too large, which is not conducive to improving the volumetric energy density of the battery pack; another purpose of this application is to provide an electrical device.

[0004] Technical solution: A battery pack according to an embodiment of this application includes:

[0005] The box-shaped enclosure has a receiving cavity;

[0006] The beam is disposed within the receiving cavity and connected to the box body;

[0007] The battery pack is disposed within the receiving cavity and is positioned along a first direction on one side of the beam.

[0008] A battery management component is disposed within the receiving cavity and is positioned along the first direction on the side of the beam away from the battery pack; a wiring space is formed between the battery management component, the beam, and the battery pack;

[0009] A wiring harness assembly is partially disposed within the wiring space and connected to the beam. The wiring harness assembly is electrically connected to the battery pack and the battery management component, respectively.

[0010] In some embodiments,

[0011] The housing includes a bottom plate and side plates for forming the receiving cavity. The side plates and the beam are spaced apart along the first direction and are both connected to the bottom plate. The battery management component is disposed between the side plates and the beam.

[0012] The wire harness assembly includes:

[0013] The signal acquisition harness is partially located on the side of the beam away from the base plate and connected to the beam; the signal acquisition harness is detachably conductively connected to the battery pack and the battery management component respectively;

[0014] A communication harness is partially located on the side of the signal acquisition harness away from the beam and connected to the signal acquisition harness; the communication harness is detachably electrically connected to the battery management component.

[0015] In some embodiments,

[0016] The battery pack includes a communication connector and a high-voltage connector, which are spaced apart and embedded in the side plate; a portion of the high-voltage connector is located on the side plate near the beam and is spaced apart from the battery management component.

[0017] The communication harness includes a first segment, a second segment, a third segment, and a first branch line. The first segment is connected to the side of the signal acquisition harness away from the beam and is electrically connected to the battery management component. The second segment passes between the high-voltage connector and the battery management component and is electrically connected to the first segment, the third segment, and the first branch line. The third segment is located between the battery management component and the side plate, and the end of the third segment away from the second segment is detachably electrically connected to the communication connector. The first branch line is detachably electrically connected to the high-voltage connector.

[0018] In some embodiments, the communication harness further includes a protective sleeve fitted around the outer periphery of the second segment.

[0019] In some embodiments, the battery management assembly includes a housing and a mounting bracket, the housing being connected to the beam, and the mounting bracket being connected to the side of the housing near the side plate; the third segment is connected to the mounting bracket.

[0020] In some embodiments, the housing and the fixing bracket are integrally connected.

[0021] In some embodiments,

[0022] The battery pack also includes a temperature detection module for detecting the temperature of the thermal management component, the temperature detection module being disposed on the side of the battery management component near the base plate;

[0023] The communication harness also includes a second branch wire, which is electrically connected to the second segment.

[0024] The wiring harness assembly also includes an adapter cable, which is detachably electrically connected to the second branch and the temperature detection module, respectively.

[0025] In some embodiments, the adapter cable is at least partially disposed between the battery management component and the beam, and connected to the beam.

[0026] In some embodiments,

[0027] The battery pack also includes a maintenance switch, which is disposed between the high-voltage connector and the communication connector, and is spaced apart from both the high-voltage connector and the communication connector.

[0028] The communication harness also includes a third branch wire, which is electrically connected to the third segment and is detachably electrically connected to the maintenance switch.

[0029] In some embodiments, the battery pack has a second direction perpendicular to the first direction, along which the height of the beam is less than the height of the battery management component and the height of the battery pack, and the wiring space is located on the side of the beam away from the base plate.

[0030] Accordingly, the electrical device described in this application includes a battery pack as described in any of the foregoing embodiments.

[0031] Beneficial Effects: Compared with the prior art, a battery pack according to an embodiment of this application includes a housing, a beam, a battery pack, a battery management component, and a wiring harness assembly. The housing has a receiving cavity, and the beam is disposed within the receiving cavity and connected to the housing. The battery pack is disposed within the receiving cavity and is positioned on one side of the beam along a first direction. The battery management component is disposed within the receiving cavity and is positioned on the side of the beam away from the battery pack along the first direction. A wiring space is formed between the battery management component, the beam, and the battery pack. The wiring harness assembly is partially disposed within the wiring space and connected to the beam, and is electrically connected to both the battery pack and the battery management component. By placing the wiring harness assembly within the wiring space enclosed by the battery management component, the beam, and the battery pack, this application effectively optimizes the space within the battery pack compared to arranging wiring space separately within the receiving cavity. This reduces the additional space occupied by the wiring harness assembly within the battery pack, which is beneficial for improving the energy density of the battery pack. In addition, the integrated placement of the wiring harness assembly within the wiring space reduces wiring length, lowers wiring difficulty, and effectively reduces costs.

[0032] Compared with the prior art, an electrical device according to an embodiment of this application includes a battery pack as described in any of the foregoing embodiments. It is understood that the electrical device of this application includes all the technical features and effects of the aforementioned battery pack, which will not be repeated here. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of a battery pack according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the structure of a battery pack excluding the battery pack, according to an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the structure of the first cavity interior and wiring harness assembly of a battery pack according to an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the structure of a wiring harness assembly for a battery pack according to an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the structure of a battery management component of a battery pack according to an embodiment of this application;

[0039] Figure 6 This is a schematic diagram of the structure connecting the beam of a battery pack to the wiring harness assembly according to an embodiment of this application;

[0040] Figure 7 This is a schematic diagram showing the positional relationship of the base plate, beam, battery pack, and battery management components of a battery pack according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Box body; 110. Receiving cavity; 120. Bottom plate; 130. Side plate;

[0043] 200. Beam structure;

[0044] 300, Battery pack;

[0045] 400. Battery management component; 410. Wiring space; 420. Housing; 430. Mounting bracket;

[0046] 500. Wiring harness assembly; 510. Signal acquisition harness; 520. Communication harness; 521. First segment; 522. Second segment; 523. Third segment; 524. First branch line; 525. Protection kit; 526. Second branch line; 527. Third branch line; 530. Adapter cable;

[0047] 600. Communication connectors;

[0048] 700. High-voltage connectors;

[0049] 800. Temperature detection module;

[0050] 900. Repair switch;

[0051] X, the first direction; Y, the second direction. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0053] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles between 80° and 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles between 10° is considered parallel.

[0054] It should also be noted that this application uses an arrow labeled X to indicate the first direction X, and an arrow labeled Y to indicate the second direction Y. The first direction X can be the arrangement direction of the battery management component 400, the beam 200, and the battery pack 300, and the second direction Y is the direction from the base plate 120 towards the beam 200. The first direction X is introduced to more clearly illustrate the structural positional relationship of the components of the battery pack.

[0055] Currently, with the increasing demand for longer driving range in electric vehicles, the energy density requirements for the associated power battery packs are also rising. As a result, the volume proportion of battery cell modules within the power battery pack is increasing, while the volume proportion reserved for wiring harness design is decreasing, meaning the design space for wiring harnesses within the power battery pack is shrinking. Current wiring harness designs typically involve independently designing wiring harnesses for different functional modules to improve after-sales serviceability. Furthermore, to balance safety and assemblability, structures that might cause sharp-edge interference are generally avoided, and areas not directly visible for operation are minimized to ensure optimal assembly. This design approach generally requires a large design space for wiring harnesses, which contradicts the aforementioned trend of increasingly smaller design space for wiring harnesses.

[0056] In view of this, embodiments of this application provide a battery pack aimed at solving at least one of the above-mentioned problems.

[0057] Please refer to the following: Figure 1 and Figure 2 This application provides a battery pack, including a housing 100, a beam 200, a battery pack 300, a battery management component 400, and a wiring harness assembly 500. The housing 100 has a receiving cavity 110, and the beam 200 is disposed in the receiving cavity 110 and connected to the housing 100. The battery pack 300 is disposed in the receiving cavity 110 and is disposed on one side of the beam 200 along a first direction X. The battery management component 400 is disposed in the receiving cavity 110 and is disposed on the side of the beam 200 away from the battery pack 300 along the first direction X. A wiring space 410 is formed between the battery management component 400, the beam 200, and the battery pack 300. The wiring harness assembly 500 is partially disposed in the wiring space 410 and connected to the beam 200. The wiring harness assembly 500 is electrically connected to the battery pack 300 and the battery management component 400, respectively.

[0058] This application optimizes the internal space of the battery pack by placing the wiring harness assembly 500 within the wiring space 410 enclosed by the battery management assembly 400, the beam 200, and the battery pack 300, compared to arranging wiring space separately within the receiving cavity 110. This reduces the space occupied by the wiring harness assembly 500 within the battery pack, which is beneficial for improving the energy density of the battery pack. Furthermore, the integrated placement of the wiring harness assembly 500 within the wiring space 410 reduces wiring length, simplifies wiring, and effectively lowers costs.

[0059] In this embodiment, the housing 100 can be die-cast from lightweight, high-strength aluminum alloy, and the shape of the accommodating cavity 110 can be designed as a cuboid or an irregular polygon according to the vehicle's installation space requirements. The inner wall of the housing 100 can be reinforced with ribs to enhance its structural strength and prevent damage during vehicle operation due to vibration or other factors, thus ensuring the stability of the internal components. The beam 200 can be connected to the housing 100 by welding or threaded fastening. The battery pack 300 can be a battery module or an integration of multiple battery cells without modules.

[0060] like Figure 7 As shown, in some embodiments, the battery pack has a second direction Y perpendicular to the first direction X. Along the second direction Y, the height of the beam 200 is less than the height of the battery management assembly 400 and the height of the battery pack 300. The wiring space 410 is located on the side of the beam 200 away from the base plate 120.

[0061] In this embodiment, along the second direction Y, the height of the beam 200 can be less than the height of the battery management component 400 and also less than the height of the battery pack 300. In this case, along the arrangement direction of the battery pack 300, beam 200, and battery management component 400, i.e., along the first direction X, the battery management component 400 and battery pack 300 can be partially opposite each other and spaced apart. This allows the portions of the battery pack 300 and battery management component 400 protruding from the beam 200 to form a wiring space 410 with the beam 200. This structure, by limiting the height of the beam 200, can fully utilize the space between the battery management component 400 and battery pack 300, further improving the internal space utilization of the housing 100.

[0062] The battery pack may also include a cover, which is connected to the housing 100 to seal the receiving cavity 110. In this embodiment, the battery management component 400 and the battery pack 300 may partially protrude outside the receiving cavity 110. To accommodate the protruding portions of the battery pack 300 and the battery management component 400, the cover may be provided with a corresponding receiving space to accommodate the battery management component 400 and the battery pack 300, thereby achieving a seal on the housing 100.

[0063] It should be noted that in the battery pack of this embodiment, the wiring harness assembly 500 enables conductive connection between the battery pack 300 and the battery management component 400, thereby facilitating signal transmission between the battery management component 400 and the battery pack 300, as well as charging and discharging of the battery pack 300. Additionally, the wiring harness assembly 500 also enables connection between the battery management component 400 and the external interface on the battery pack housing 100, facilitating the application of the battery pack in a vehicle and enabling full-pack charging and discharging operations. The wiring harness assembly 500 can be connected to the beam 200 by using clips on the beam 200 to secure it.

[0064] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the housing 100 includes a bottom plate 120 and a side plate 130 for forming a receiving cavity 110. The side plate 130 and the beam 200 are spaced apart along a first direction X and are both connected to the bottom plate 120. The battery management component 400 is disposed between the side plate 130 and the beam 200. The wiring harness assembly 500 includes a signal acquisition harness 510 and a signal acquisition harness 510. The signal acquisition harness 510 is partially disposed on the side of the beam 200 away from the bottom plate 120 and is connected to the beam 200. The signal acquisition harness 510 is detachably conductively connected to the battery pack 300 and the battery management component 400, respectively. The communication harness 520 is partially disposed on the side of the signal acquisition harness 510 away from the beam 200 and is connected to the signal acquisition harness 510. The communication harness 520 is detachably conductively connected to the battery management component 400.

[0065] In this embodiment, by arranging the wiring harness assembly 500 on the side of the beam 200 away from the base plate 120, it facilitates the natural formation of wiring space 410 after the battery pack 300 and battery management component 400 are assembled, and then wiring is carried out, reducing the difficulty of battery pack assembly, improving wiring convenience, and increasing battery pack assembly efficiency. Furthermore, the signal acquisition harness 510 and communication harness 520 are arranged and fixedly connected along the arrangement direction of the beam 200 and the base plate 120, which further improves space utilization and reduces the size of the beam 200 along the arrangement direction of the battery management component 400 and the beam 200, thereby further increasing the volumetric energy density of the battery pack and contributing to its lightweight design.

[0066] It should be noted that the signal acquisition harness 510 is detachably connected to the battery pack 300 and the battery management component 400. Connectors can be installed at corresponding locations on the battery pack 300 and the battery management component 400. Corresponding plugs are provided at both ends of the signal acquisition harness 510, and these plugs are mated with the corresponding connectors to achieve a detachable conductive connection between the signal acquisition harness 510 and the battery pack 300 and the battery management component 400. The signal acquisition harness 510 can acquire information such as the voltage and temperature of the battery pack 300. The communication harness 520 is detachably connected to the battery management component 400, and its other end can be mated with a connector provided on the housing 100 to achieve a communication connection between the battery management component 400 and an external control unit. The communication harness 520 can also be equipped with corresponding plugs, and the battery management component 400 can be equipped with a connector that mates with the communication harness 520, thereby achieving a corresponding detachable conductive connection.

[0067] It should be noted that the signal acquisition harness 510 can be secured to the beam 200 by setting a clip on the beam 200, thus connecting the signal acquisition harness 510 to the beam 200. The communication harness 520 is located on the side of the signal acquisition harness 510 away from the beam 200, and can be bound together with a flexible cable tie to achieve the connection between the signal acquisition harness 510 and the communication harness 520.

[0068] Please refer to the following: Figure 2 , Figure 3 and Figure 4 In some embodiments, the battery pack includes a communication connector 600 and a high-voltage connector 700, which are spaced apart and embedded in the side plate 130. A portion of the high-voltage connector 700 is located on the side of the side plate 130 near the beam 200 and is spaced apart from the battery management component 400. The communication harness 520 includes a first segment 521, a second segment 522, a third segment 523, and a first branch line 524. The first segment 521 is connected to the signal acquisition harness 510 away from the beam 200. On one side, the first segment 521 is electrically connected to the battery management component 400; the second segment 522 passes between the high-voltage connector 700 and the battery management component 400, and is electrically connected to the first segment 521, the third segment 523 and the first branch line 524 respectively; the third segment 523 is disposed between the battery management component 400 and the side plate 130, and the end of the third segment 523 away from the second segment 522 is detachably electrically connected to the communication connector 600; the first branch line 524 is detachably electrically connected to the high-voltage connector 700.

[0069] In this embodiment, the communication harness 520 includes a first segment 521, a second segment 522, a third segment 523, and a first branch line 524. By arranging these segments in different locations, the limited space is utilized, thereby further improving space utilization and better adapting to compact layout requirements. By spaced communication connectors 600 and high-voltage connectors 700 on the side plate 130, wiring is made easier between the communication harness 520 side plate 130 and the battery management component 400, thus achieving conductive connection between the battery management component 400 and the communication connectors 600 and 700.

[0070] The communication connector 600 and the high-voltage connector 700 are spaced apart, and the communication harness 520 is independently connected to the high-voltage connector 700 to achieve physical isolation between high and low voltage limits, which can improve safety.

[0071] The communication harness 520 in this embodiment is segmented, wherein the first segment 521 is fixed to the signal acquisition harness 510, the second segment 522 runs along the gap between the high-voltage connector 700 and the battery management component 400, and the third segment 523 extends along the parallel gap between the battery management component 400 and the side plate 130. This design of customizing the wiring path according to the gap facilitates standardized wiring and improves the neatness of the harness. The detachable conductive connection (such as a pluggable terminal) between the third segment 523 and the communication connector 600, and between the first branch line 524 and the high-voltage connector 700, enables independent maintenance of the communication and high-voltage systems, thereby improving the convenience of subsequent maintenance.

[0072] Please refer to the following: Figure 3 and Figure 4 In some embodiments, the communication harness 520 further includes a protective sleeve 525, which is fitted around the outer periphery of the second segment 522.

[0073] In this embodiment, by providing a protective sleeve 525 around the outer periphery of the second segment 522, the second segment 522 can be effectively protected. When the second segment 522 passes through the narrow gap between the high-voltage connector 700 and the battery management component 400, the sharp edges of the metal interface of the high-voltage connector 700 or the housing 420 of the battery management component 400 can be prevented from causing friction or squeezing damage to the second segment 522, thus effectively protecting the service life of the communication harness 520.

[0074] Please refer to the following: Figure 3 and Figure 5 In some embodiments, the battery management assembly 400 includes a housing 420 and a mounting bracket 430. The housing 420 is connected to the beam 200, and the mounting bracket 430 is connected to the side of the housing 420 near the side plate 130. The third segment 523 is connected to the mounting bracket 430.

[0075] In this embodiment, by providing a fixing bracket 430 on the housing 420 of the battery management component 400, the third segment 523 can be fixedly positioned and supported, achieving precise constraint on the wiring harness. This improves space utilization and keeps the wiring neat. Simultaneously, fixing the third segment 523 with the fixing bracket 430 increases the wiring harness's fixing strength, helping to resist loosening caused by vibration. It also avoids mutual interference or safety issues caused by unconstrained wiring harnesses.

[0076] In some embodiments, the housing 420 and the mounting bracket 430 are integrally connected.

[0077] In this embodiment, by setting the housing 420 and the fixing bracket 430 to be integrally connected, the stability of the connection between the fixing bracket 430 and the housing 420 can be effectively improved, thereby ensuring the wire harness fixing effect.

[0078] The housing 420 and the fixed bracket 430 can be integrally molded, such as by injection molding or die casting. This eliminates the connection gap between the housing 420 and the fixed bracket 430, creating a seamless integral structure that effectively improves the connection strength between them and reduces the risk of breakage. Furthermore, the integral molding of the housing 420 and the fixed bracket 430 effectively reduces manufacturing costs.

[0079] like Figure 6 As shown, in some embodiments, the battery pack further includes a temperature detection module 800 for detecting the temperature of the thermal management component, the temperature detection module 800 being disposed on the side of the battery management component 400 near the base plate 120; the communication harness 520 further includes a second branch line 526, the second branch line 526 being conductively connected to the second segment 522; the harness assembly 500 further includes an adapter line 530, the adapter line 530 being detachably conductively connected to the second branch line 526 and the temperature detection module 800 respectively.

[0080] In this embodiment, the battery pack also includes a thermal management component (such as a liquid cooling plate), requiring a temperature detection module 800 to monitor the temperature of the thermal management component. The thermal management component is typically positioned between the battery pack 300 and the base plate 120. A through-hole is provided on the beam 200 for the input / output ports of the thermal management component to pass through, facilitating connection between the thermal management component and the external circulation system. The temperature detection module 800 can be located at the input / output port of the thermal management component. During battery pack assembly, if the battery pack 300 is installed first and wiring is then applied, blind spots may occur, making it difficult to connect the temperature detection module 800 to the communication harness 520. This application, by setting up an adapter cable 530 and a second branch line 526, allows for the assembly of thermal management components, battery pack 300, etc., in the normal order during battery pack assembly. The adapter cable 530 is first connected to the temperature detection module 800, and then passes through a through hole in the beam 200 to the side of the beam 200 near the battery pack 300. The adapter cable 530 can overlap the beam 200 before the battery management component 400 is installed. In the remaining part of the wiring harness assembly 500, the second branch line 526 on the communication harness 520 can be mated with the adapter cable 530, thus achieving a conductive connection between the temperature detection module 800 and the communication harness 520. This allows for wiring even in unseen blind spots during battery pack assembly, and enables rapid wiring, further improving space utilization.

[0081] like Figure 6 As shown, in some embodiments, the adapter cable 530 is at least partially disposed between the battery management assembly 400 and the beam 200, and is connected to the beam 200.

[0082] In this embodiment, by partially placing the adapter cable 530 between the battery management component 400 and the beam 200 and fixing it to the beam 200, the adapter cable 530 is secured, which facilitates wiring harness arrangement and makes full use of the space between the beam 200 and the battery management component 400, further improving space utilization. Furthermore, fixing the adapter cable 530 to the beam 200 facilitates quick connection of the second branch line 526 to the adapter cable 530 during subsequent wiring of the wiring harness component 500.

[0083] Please refer to the following: Figure 1 , Figure 2 and Figure 4 In some embodiments, the battery pack also includes a maintenance switch 900, which is disposed between the high-voltage connector 700 and the communication connector 600. The maintenance switch 900 is spaced apart from both the high-voltage connector 700 and the communication connector 600. The communication harness 520 also includes a third branch line 527, which is electrically connected to the third segment 523 and is detachably electrically connected to the maintenance switch 900.

[0084] In this embodiment, by arranging a third branch line 527 connected to the third segment 523 and then connecting it to the maintenance switch 900, a separate complete signal harness is not required for the maintenance switch 900, thus reducing the overall wiring complexity. Simultaneously, since the third segment 523 is located between the battery management component 400 and the side plate 130, the third branch line 527 can extend along the path between the battery management component 400 and the side plate 130 to the maintenance switch 900, effectively improving space utilization and avoiding interference with the second branch line 526. Furthermore, it also reduces wiring length.

[0085] Among them, the maintenance switch 900 can be a manual maintenance switch 900, which is convenient for manual operation.

[0086] Accordingly, an electrical device according to an embodiment of this application includes a battery pack as described in any of the foregoing embodiments.

[0087] In the embodiments of this application, the power-consuming device includes the aforementioned battery pack, wherein the aforementioned battery pack is used to supply power to the power-consuming device. Therefore, the power-consuming device includes all the technical features and technical effects of the aforementioned battery pack, which will not be repeated here.

[0088] Of course, the electrical devices referred to in this application can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be new energy vehicles, including pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles; spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers. This application does not impose any special limitations on the above-mentioned electrical devices.

[0089] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0090] The battery pack and power device provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that, Having a first direction, including: The box-shaped enclosure has a receiving cavity; The beam is disposed within the receiving cavity and connected to the box body; The battery pack is disposed within the receiving cavity and is positioned on one side of the beam along the first direction; A battery management component is disposed within the receiving cavity and is positioned along the first direction on the side of the beam away from the battery pack; a wiring space is formed between the battery management component, the beam, and the battery pack; A wiring harness assembly is partially disposed within the wiring space and connected to the beam. The wiring harness assembly is electrically connected to the battery pack and the battery management component, respectively.

2. The battery pack according to claim 1, characterized in that, The housing includes a bottom plate and side plates for forming the receiving cavity. The side plates and the beam are spaced apart along the first direction and are both connected to the bottom plate. The battery management component is disposed between the side plates and the beam. The wire harness assembly includes: The signal acquisition harness is partially located on the side of the beam away from the base plate and connected to the beam; the signal acquisition harness is detachably conductively connected to the battery pack and the battery management component respectively; A communication harness is partially located on the side of the signal acquisition harness away from the beam and connected to the signal acquisition harness; the communication harness is detachably electrically connected to the battery management component.

3. The battery pack according to claim 2, characterized in that, The battery pack includes a communication connector and a high-voltage connector, which are spaced apart and embedded in the side plate; a portion of the high-voltage connector is located on the side plate near the beam and is spaced apart from the battery management component. The communication harness includes a first segment, a second segment, a third segment, and a first branch line. The first segment is connected to the side of the signal acquisition harness away from the beam and is electrically connected to the battery management component. The second segment passes between the high-voltage connector and the battery management component and is electrically connected to the first segment, the third segment, and the first branch line. The third segment is located between the battery management component and the side plate, and the end of the third segment away from the second segment is detachably electrically connected to the communication connector. The first branch line is detachably electrically connected to the high-voltage connector.

4. The battery pack according to claim 3, characterized in that, The communication harness also includes a protective sleeve, which is fitted onto the outer periphery of the second segment.

5. The battery pack according to claim 3, characterized in that, The battery management component includes a housing and a fixing bracket. The housing is connected to the beam, and the fixing bracket is connected to the side of the housing near the side plate. The third segment is connected to the fixing bracket.

6. The battery pack according to claim 5, characterized in that, The housing and the fixed bracket are connected as a single unit.

7. The battery pack according to claim 3, characterized in that, The battery pack also includes a temperature detection module for detecting the temperature of the thermal management component, the temperature detection module being disposed on the side of the battery management component near the base plate; The communication harness also includes a second branch wire, which is electrically connected to the second segment. The wiring harness assembly also includes an adapter cable, which is detachably electrically connected to the second branch and the temperature detection module, respectively.

8. The battery pack according to claim 7, characterized in that, The adapter cable is at least partially disposed between the battery management component and the beam, and is connected to the beam.

9. The battery pack according to claim 3, characterized in that, The battery pack also includes a maintenance switch, which is disposed between the high-voltage connector and the communication connector, and is spaced apart from both the high-voltage connector and the communication connector. The communication harness also includes a third branch wire, which is electrically connected to the third segment and is detachably electrically connected to the maintenance switch.

10. The battery pack according to claim 2, characterized in that, The battery pack has a second direction perpendicular to the first direction. Along the second direction, the height of the beam is less than the height of the battery management component and the height of the battery pack. The wiring space is located on the side of the beam away from the base plate.

11. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 10.

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