Wire harness arrangement structure and battery pack

Abstract

The utility model relates to the technical field of electric energy storage, and particularly discloses a wire harness arrangement structure and a battery pack, comprising a battery box body, the interior of which is divided into an electric appliance cabin and a battery cabin which are arranged along the X direction by a separation cross beam; the BMS component and the BDU component are arranged in the electric appliance bin at intervals in the Y direction, an X-direction wiring space is formed between the BMS component and the BDU component, and a Y-direction wiring space is formed between the BMS component and the BDU component and the separation cross beam; the high-voltage copper bar assembly is connected with a high-voltage interface of the BDU component through the lower part of the X-direction wiring space and / or the Y-direction wiring space; and the low-voltage wire harness is butted to the low-voltage interfaces of the BMS component and the BDU component through the upper part of the X-direction wiring space and / or the Y-direction wiring space, and keeps a distance not smaller than the minimum spacing distance with the high-voltage copper bar assembly. According to the wire harness arrangement structure and the battery pack provided by the utility model, wiring interference between the high-voltage wire harness and the low-voltage wire harness can be avoided, and EMC (Electro Magnetic Compatibility) coupling interference can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a wire harness arrangement structure and a battery pack. Background Technology

[0002] In recent years, battery packs have become increasingly integrated, resulting in extreme compression of the electrical compartment space at the front end of the battery pack. This compression reduces the distance between high-voltage and low-voltage wiring harnesses, directly affecting the EMC (Electromagnetic Compatibility) of the low-voltage wiring harnesses and consequently impacting the stability of signal acquisition.

[0003] Therefore, existing battery packs need to be improved to avoid wiring interference between high-voltage and low-voltage harnesses and reduce EMC coupling interference.

[0004] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a wiring harness arrangement structure and battery pack that can avoid wiring interference between high-voltage and low-voltage wiring harnesses and reduce EMC coupling interference.

[0006] To achieve the above objectives, this utility model provides a wire harness arrangement structure, comprising:

[0007] The battery housing is divided internally into an electrical compartment and a battery compartment arranged along the X direction by a partition beam.

[0008] BMS components and BDU components are arranged at intervals along the Y direction in the electrical compartment. The BMS components and the BDU components form an X-direction wiring space between them and the partition beam, which in turn form a Y-direction wiring space.

[0009] A high-voltage copper busbar assembly is fixed on the partition beam. The high-voltage copper busbar assembly is connected to the high-voltage interface of the BDU component through the lower part of the X-direction routing space and / or the Y-direction routing space.

[0010] The low-voltage wiring harness is located within the Y-direction routing space and is arranged close to the BMS component and the BDU component. The low-voltage wiring harness is connected to the low-voltage interfaces of the BMS component and the BDU component through the upper part of the X-direction routing space and / or the Y-direction routing space, and maintains a distance of not less than the minimum interval distance from the high-voltage copper busbar assembly.

[0011] Optionally, the BMS component has several high-voltage sampling and low-voltage communication interfaces on the surface near the separator beam and away from the BDU component.

[0012] Optionally, the BMS component near the end of the BDU component and the BMS component near the BDU component are provided with a number of low-voltage signal acquisition interfaces.

[0013] Optionally, the BDU component has a positive high-voltage interface at the end of its surface near the separator beam that is away from the BMS component.

[0014] Optionally, the BDU component has a negative high-voltage interface and a high-voltage sampling interface on its surface near the BMS component;

[0015] The negative high-voltage interface is located at the intersection of the Y-direction routing space and the X-direction routing space.

[0016] Optionally, the high-voltage copper busbar assembly includes a positive copper busbar for electrically connecting the positive terminal of the battery module to the positive high-voltage interface, and a negative copper busbar for electrically connecting the negative terminal of the battery module to the negative high-voltage interface.

[0017] The positive electrode copper busbar has a positive electrode docking part that extends from one end away from the BMS component through the Y-direction wiring space to the positive electrode high voltage interface;

[0018] The negative electrode copper busbar has a negative electrode docking part that extends from the lower part of the X-direction wiring space to the negative electrode high voltage interface.

[0019] Optionally, the dividing beam has an L-shaped structure, including a vertical part for installing and fixing the main body of the positive copper busbar and the negative copper busbar, and a horizontal part connected to the bottom of the vertical part for fixing the low-voltage wire harness;

[0020] The horizontal portion has a clearance groove corresponding to the position of the negative electrode docking portion, allowing the negative electrode docking portion to pass through.

[0021] Optionally, the vertical part is provided with a plurality of first locking holes, and an insulating buckle is engaged at the first locking hole. The insulating buckle is provided with a copper busbar through groove for the main body part to pass through and fix the main body part.

[0022] The horizontal part is provided with a plurality of second locking holes, and wire harness buckles are locked and installed at the second locking holes. The wire harness buckles are provided with wire harness through grooves for the low-voltage wire harness to pass through and fix the low-voltage wire harness.

[0023] Optionally, a low-voltage communication connector is provided on the circumferential surface of the battery housing near the X-direction wiring space, and the low-voltage wiring harness is electrically connected to the low-voltage communication connector via the X-direction wiring space.

[0024] On the other hand, a battery pack is provided, comprising:

[0025] Any of the wire harness arrangement structures described above;

[0026] The battery module is located in the battery compartment of the wiring harness arrangement structure and is electrically connected to each of the high-voltage interfaces through the high-voltage copper busbar assembly and electrically connected to each of the low-voltage interfaces through the low-voltage wiring harness.

[0027] The beneficial effects of this utility model are as follows: It provides a wiring harness arrangement structure and a battery pack. By setting a dividing beam inside the battery box, the electrical compartment and the battery compartment are separated along the X direction, which provides a basis for the independent layout of high and low voltage components in the electrical compartment.

[0028] The BMS and BDU components are arranged at intervals along the Y direction in the electrical compartment, forming an X-direction wiring space between them. At the same time, a Y-direction wiring space is formed between them and the partition beam. Through this three-dimensional spatial division, the paths of the high-voltage copper busbar assembly and the low-voltage wiring harness are separated.

[0029] The high-voltage copper busbar assembly is fixed to the partition beam and extends to the BDU high-voltage interface via the lower part of the X-direction routing space or the Y-direction routing space. The low-voltage wiring harness is confined within the Y-direction routing space and is connected to the BDU low-voltage interface and BMS low-voltage interface via the upper part of the X-direction routing space and / or the Y-direction routing space. This creates a separate routing architecture for the high-voltage copper busbar assembly and the low-voltage wiring harness within a limited space.

[0030] This layout creates a natural spatial isolation between the high-voltage copper busbar assembly and the low-voltage wiring harness, avoiding physical interference caused by wiring intersections and ensuring that the electromagnetic safety distance between the high-voltage and low-voltage lines is always maintained at a level not less than the minimum spacing distance.

[0031] Setting a minimum spacing distance can effectively block the magnetic field generated by the high voltage and high current on the high voltage copper busbar assembly from coupling interference to the low voltage wiring harness. Thus, even under the condition that the electrical compartment space at one end of the battery pack is extremely compressed, it takes into account both the physical isolation of the high voltage copper busbar assembly and the electromagnetic compatibility optimization of the low voltage wiring harness, and ultimately solves the technical defect of poor signal acquisition stability in highly integrated battery packs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the battery pack provided in the embodiment;

[0034] Figure 2 This is a schematic diagram of the dividing beam provided in the embodiment.

[0035] In the picture:

[0036] 1. Battery module;

[0037] 2. Battery housing; 201. Dividing beam; 2011. Vertical section; 2012. Horizontal section; 2012a. Clearance groove; 202. Electrical compartment; 2021. Y-axis wiring space; 2022. X-axis wiring space; 203. Battery compartment;

[0038] 3. BMS components;

[0039] 4. BDU components; 401. Positive high voltage interface; 402. Negative high voltage interface; 403. Low voltage control interface; 404. High voltage sampling interface;

[0040] 5. High-voltage copper busbar assembly; 501, positive copper busbar; 5011, positive electrode connection part; 502, negative copper busbar; 5021, negative electrode connection part;

[0041] 6. Low-voltage wiring harness;

[0042] 7. Insulating buckle;

[0043] 8. Wiring harness clips;

[0044] 9. Low-voltage communication connector. Detailed Implementation

[0045] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0046] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0047] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0048] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0049] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0050] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0051] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0052] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0053] This utility model provides a wiring harness arrangement structure and battery pack, which is suitable for compact electrical appliance compartment scenarios with highly integrated battery packs. By dividing the high and low voltage wiring space with a partition beam, arranging the high voltage copper busbar and low voltage wiring harness in layers and maintaining a safe distance, the problem of unstable signal acquisition caused by high voltage interference is solved.

[0054] See Figure 1 In this embodiment, the battery pack includes a wiring harness arrangement structure and a battery module 1.

[0055] The wiring harness arrangement structure includes a battery box 2, a BMS component 3, a BDU component 4, a high-voltage copper busbar assembly 5, and a low-voltage wiring harness 6.

[0056] Combination Figure 1 and Figure 2 The battery box is provided with a partition beam 201, which divides the internal space of the battery box 2 into an electrical compartment 202 arranged along the X direction and a battery compartment 203 for accommodating the battery module 1.

[0057] The BMS component 3 and the BDU component 4 are arranged at intervals in the electrical compartment 202 along the Y direction perpendicular to the X direction, such that a Y-direction wiring space 2021 is formed between the BMS component 3 and the BDU component 4 and the partition beam 201, and an X-direction wiring space 2022 is formed between the BMS component 3 and the BDU component 4, connecting to the Y-direction wiring space 2021; wherein, the surface of the BMS component 3 near the partition beam 201 and / or near the surface of the BDU component 4 is provided with a plurality of BMS low-voltage interfaces; the surface of the BDU component 4 near the partition beam 201 and / or near the surface of the BMS component 3 is provided with a plurality of BDU high-voltage interfaces and a plurality of BDU low-voltage interfaces.

[0058] The high-voltage copper busbar assembly 5 is fixed on the partition beam 201 and extends through the lower part of the X-direction routing space 2022 and / or the Y-direction routing space 2021 to connect with the corresponding BDU high-voltage interface.

[0059] The low-voltage wiring harness 6 is located within the Y-direction routing space 2021 and is positioned close to both the BMS component 3 and the BDU component 4, such that the distance between the low-voltage wiring harness 6 and the high-voltage copper busbar assembly 5 is greater than or equal to the minimum spacing distance; wherein, the low-voltage wiring harness 6 is connected to each of the BMS low-voltage interfaces and each of the BDU low-voltage interfaces via the upper part of the X-direction routing space 2022 and / or the Y-direction routing space 2021.

[0060] Furthermore, the battery module 1 is located within the battery compartment 203 of the wiring harness arrangement structure, and is electrically connected to each of the high-voltage interfaces via the high-voltage copper busbar assembly 5 and to each of the low-voltage interfaces via the low-voltage wiring harness 6.

[0061] The wiring harness arrangement structure and battery pack provided by this utility model, through the setting of the dividing beam 201 in the battery box 2, separate the electrical compartment 202 and the battery compartment 203 along the X direction, providing a basis for the independent layout of high and low voltage components in the electrical compartment 202.

[0062] BMS component 3 and BDU component 4 are arranged at intervals along the Y direction in the electrical compartment 202, so that an X-direction wiring space 2022 is formed between them, and a Y-direction wiring space 2021 is formed between them and the dividing beam 201. Through this three-dimensional spatial division, the path separation of high voltage copper busbar assembly 5 and low voltage wire harness 6 is realized.

[0063] The high-voltage copper busbar assembly 5 is fixed to the partition beam 201 and extends to the BDU high-voltage interface via the lower part of the X-direction wiring space 2022 or the Y-direction wiring space 2021. The low-voltage wiring harness 6 is confined within the Y-direction wiring space 2021 and is connected to the BDU low-voltage interface and the BMS low-voltage interface via the upper part of the X-direction wiring space 2022 and / or the Y-direction wiring space 2021. This creates a separate wiring architecture for the high-voltage copper busbar assembly 5 and the low-voltage wiring harness 6 within a limited space. This also shortens the length of the high-voltage copper busbar assembly 5, reduces resistance, and decreases energy loss. Furthermore, it shortens the length of the low-voltage wiring harness 6, improving installation convenience.

[0064] This layout creates a natural spatial isolation between the high-voltage copper busbar assembly 5 and the low-voltage wiring harness 6, avoiding physical interference caused by wiring intersections and ensuring that the electromagnetic safety distance between the high-voltage and low-voltage lines is always maintained at a level not less than the minimum spacing distance.

[0065] Setting a minimum spacing distance effectively blocks the coupling interference of the magnetic field generated by the high voltage and high current on the high-voltage copper busbar assembly 5 to the low-voltage wiring harness 6. This ensures both physical isolation and electromagnetic compatibility optimization between the high-voltage copper busbar assembly 5 and the low-voltage wiring harness 6, even under conditions where the space in the electrical compartment 202 at the front end of the battery pack is extremely compressed. Ultimately, this solves the technical defect of poor signal acquisition stability in highly integrated battery packs. The minimum spacing distance can be configured according to overall design requirements, and can be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 150mm, 200mm, 300mm, etc.

[0066] In summary, this utility model, through innovative designs such as spatial partitioning, path layering, and safety spacing control, can not only avoid wiring interference between high-voltage and low-voltage wire harnesses 6, but also reduce EMC coupling interference.

[0067] (1) Regarding BMS component 3

[0068] In this embodiment, the BMS low-voltage interface is mainly divided into two categories: high-voltage sampling and low-voltage communication interface, and low-voltage signal acquisition interface. Optionally, the surface of the BMS component 3 near the partition beam 201 and away from the BDU component 4 is provided with several high-voltage sampling and low-voltage communication interfaces (P1-P3 in the figure).

[0069] Furthermore, the surface of the BMS component 3 near the partition beam 201 and the end near the BDU component 4 are provided with several low-voltage signal acquisition interfaces (P4-P11 in the figure). Interfaces are provided on multiple sides of the BMS component 4 to connect multiple high-voltage sampling and low-voltage communication interfaces, as well as low-voltage signal acquisition interfaces, thereby reducing the overall volume of the BMS component and improving space utilization.

[0070] Among them, P9~P11 of BMS component 3 are the sampling input interfaces for cell module temperature and voltage signals, which are used to input the collected information into BMS component 3 for calculation.

[0071] The high-voltage sampling and low-voltage communication interfaces and the low-voltage signal acquisition interface are designed separately, which can isolate the high-voltage and low-voltage sampling lines and avoid coupling interference between signals.

[0072] (2) Regarding BDU component 4

[0073] The BDU high-voltage interface is divided into a positive high-voltage interface 401 and a negative high-voltage interface 402; the BDU low-voltage interface is divided into a low-voltage control interface 403 and a high-voltage sampling interface 404. The BDU low-voltage interface is mainly used to control the activation of its internal relays, shunts, and high-voltage sampling, etc.

[0074] Furthermore, the BDU component 4 has a positive high-voltage interface 401 on the surface near the separator beam 201, away from the BMS component 3. The BDU component 4 also has a negative high-voltage interface 402 and a high-voltage sampling interface 404 on the surface near the BMS component 3. The negative high-voltage interface 402 is located at the intersection of the Y-direction routing space 2021 and the X-direction routing space 2022.

[0075] The positive high-voltage interface 401 and the negative high-voltage interface 402 are located on two different sides of the BDU component 4, thereby achieving a long interval between the positive high-voltage interface 401 and the negative high-voltage interface 402 to ensure electrical isolation. In addition, the intersection of the Y-direction wiring space 2021 and the X-direction wiring space 2022 has a large space. Placing the negative high-voltage interface 402 at the intersection of the Y-direction wiring space 2021 and the X-direction wiring space 2022 facilitates the installation operation with the negative terminal connection part 5021.

[0076] The high-voltage sampling interface 404 faces the X-direction wiring space 2022. This space is relatively large, which facilitates the installation of the high-voltage sampling interface 404 and also facilitates the connection of the high-voltage sampling interface 404's wiring harness to the BMS component, avoiding mutual interference between the wiring harnesses.

[0077] (3) High-voltage copper busbar assembly 5

[0078] The high-voltage copper busbar assembly 5 includes a positive copper busbar 501 for electrically connecting the positive terminal of the battery module 1 to the positive high-voltage interface 401, and a negative copper busbar 502 for electrically connecting the negative terminal of the battery module 1 to the negative high-voltage interface 402.

[0079] The positive copper busbar 501 is provided with a positive docking part 5011 that extends from the Y-direction wiring space 2021 away from the BMS component 3 to dock with the positive high voltage interface 401.

[0080] The negative electrode copper busbar 502 is provided with a negative electrode docking part 5021 that extends from the lower part of the X-direction wiring space 2022 to dock with the negative electrode high voltage interface 402.

[0081] It should be noted that with this design, the connection ends of the positive copper busbar 501 and the battery module, and the connection ends of the negative copper busbar 502 and the battery module, are respectively located at both ends of the crossbeam 201. This increases the spacing between the positive copper busbar 501 and the negative copper busbar 502, and also facilitates spatial layout. Based on this, through the spatial layout of this application, the positive copper busbar 501 is only arranged in the Y-direction wiring space 2021, shortening the length of the positive copper busbar 501. The negative high-voltage interface 402 is located at the intersection of the Y-direction wiring space 2021 and the X-direction wiring space 2022, so that the negative copper busbar 502 is connected to this intersection, which facilitates installation while shortening the length of the negative copper busbar 502.

[0082] Optionally, the surface of the main body can be plated with an insulating layer to prevent arcing, short circuits, etc.

[0083] In this embodiment, the dividing beam 201 has an L-shaped structure, including a vertical part 2011 for installing and fixing the main body of the positive copper busbar 501 and the negative copper busbar 502, and a horizontal part 2012 connected to the bottom of the vertical part 2011 and used to fix the low voltage wire harness 6.

[0084] The horizontal portion 2012 is provided with a clearance groove 2012a corresponding to the position of the negative electrode docking portion 5021, allowing the negative electrode docking portion 5021 to pass through. The clearance groove 2012a allows the negative electrode docking portion 5021 to be recessed, reducing the space occupied in height and thus improving the structural compactness, while ensuring the electrical clearance between the negative electrode docking portion 5021 and the partition beam 201.

[0085] Optionally, the vertical part 2011 is provided with a plurality of first locking holes, and an insulating buckle 7 is snapped into the first locking hole. The insulating buckle 7 is provided with a copper busbar through groove for the main body to pass through and fix the main body, thereby reliably confining the main body in the Y-direction wiring space 2021 and improving vibration and impact resistance.

[0086] The horizontal part 2012 is provided with a plurality of second locking holes, and a wire harness buckle 8 is installed at the second locking hole. The wire harness buckle 8 is provided with a wire harness through groove for the low voltage wire harness 6 to pass through and fix the low voltage wire harness 6, so that part of the low voltage wire harness 6 can be fixed in the Y-direction wiring space 2021, thereby realizing the path separation of the high voltage copper busbar assembly 5 and the low voltage wire harness 6.

[0087] (4) Connecting to the outside world

[0088] A low-voltage communication connector 9 is provided on the circumferential surface of the battery housing 2 near the X-direction wiring space 2022. The low-voltage wiring harness 6 is electrically connected to the low-voltage communication connector 9 via the X-direction wiring space 2022. The placement of the low-voltage communication connector 9 near the X-direction wiring space 2022 helps reduce wiring length and avoids problems such as tangled and messy wiring harnesses.

[0089] It should be noted that the specific functions and structures of the high-voltage and low-voltage interfaces mentioned in this embodiment belong to the prior art, namely:

[0090] In existing BDU products, BDU component 4 has a positive high voltage interface 401, a negative high voltage interface 402, a low voltage control interface 403, and a high voltage sampling interface 404; in this embodiment, the specific functions of each of the above interfaces of BDU component 4 are the same as those of existing commercially available products.

[0091] In existing BMS products, BMS component 3 already has interfaces P1-P11;

[0092] The focus of this embodiment is not on improving the specific structure of the above-mentioned interfaces, but on rearranging the specific locations of the above-mentioned interfaces so as to simultaneously achieve physical isolation and electromagnetic compatibility optimization of the high-voltage copper busbar assembly 5 and the low-voltage wiring harness 6 within a limited space, thereby fundamentally solving the technical problems of signal interference and wiring conflicts in highly integrated battery packs.

[0093] In summary, the wiring harness arrangement structure and battery pack provided in this embodiment have the following advantages:

[0094] (1) The battery box 2 is divided into electrical compartment 202 and battery compartment 203 by the dividing beam 201, so as to realize the independent layout of high and low voltage components and provide a structural basis for compact and highly integrated design.

[0095] (2) The BMS and BDU are arranged at intervals along the Y direction to form a three-dimensional routing space in the X / Y direction, realizing the layered isolation of the high voltage copper busbar and the low voltage wire harness in six paths, avoiding physical interference.

[0096] (3) The high voltage copper busbar is fixed to the partition beam 201 and extends through the lower part of the wiring space, while the low voltage wire harness 6 is limited to the upper part of the wiring space. The two are arranged in layers and maintain the minimum safe distance to block electromagnetic coupling interference.

[0097] (4) The BMS high and low voltage interfaces are partitioned to isolate the high voltage sampling and low voltage signal acquisition lines and reduce interference between signals.

[0098] (5) The positive and negative high voltage interfaces 402 of the BDU are located on different sides to extend the electrical isolation distance and improve high voltage safety.

[0099] (6) The L-shaped dividing beam 201 integrates copper busbar fixing and wire harness avoidance functions. The copper busbar is installed in the vertical part 2011 and the avoidance groove 2012a is set in the horizontal part 2012 for a sunken layout, which optimizes the space utilization.

[0100] (7) The low-voltage communication connector 9 is laid in the X-direction wiring space 2022 to shorten the wire harness length and avoid the mess caused by redundant wiring.

[0101] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A wire harness arrangement structure, characterized in that, include: The battery box (2) is divided into an electrical compartment (202) and a battery compartment (203) arranged along the X direction by a partition beam (201). BMS components (3) and BDU components (4) are arranged at intervals along the Y direction in the electrical compartment (202). The BMS components (3) and BDU components (4) form an X-direction wiring space (2022) between them and the partition beam (201) to form a Y-direction wiring space (2021). A high-voltage copper busbar assembly (5) is fixed on the partition beam (201). The high-voltage copper busbar assembly (5) is connected to the high-voltage interface of the BDU component (4) through the lower part of the X-direction routing space (2022) and / or the Y-direction routing space (2021). The low-voltage wiring harness (6) is located in the Y-direction wiring space (2021) and close to the BMS component (3) and the BDU component (4). The low-voltage wiring harness (6) is connected to the low-voltage interface of the BMS component (3) and the BDU component (4) through the upper part of the X-direction wiring space (2022) and / or the Y-direction wiring space (2021), and maintains a distance of not less than the minimum interval distance from the high-voltage copper busbar assembly (5).

2. The wire harness arrangement structure according to claim 1, characterized in that, The BMS component (3) has several high-voltage sampling and low-voltage communication interfaces on the surface near the dividing beam (201) and away from the BDU component (4).

3. The wire harness arrangement structure according to claim 2, characterized in that, The BMS component (3) near the surface of the separator beam (201) near one end of the BDU component (4) and the surface of the BMS component (3) near the BDU component (4) are provided with several low-voltage signal acquisition interfaces.

4. The wire harness arrangement structure according to claim 1, characterized in that, The BDU component (4) has a positive high voltage interface (401) on the surface near the separator beam (201) away from the BMS component (3).

5. The wire harness arrangement structure according to claim 4, characterized in that, The BDU component (4) has a negative high voltage interface (402) and a high voltage sampling interface (404) on its surface near the BMS component (3). The negative high-voltage interface (402) is located at the intersection of the Y-direction routing space (2021) and the X-direction routing space (2022).

6. The wire harness arrangement structure according to claim 5, characterized in that, The high-voltage copper busbar assembly (5) includes a positive copper busbar (501) for electrically connecting the positive terminal of the battery module (1) to the positive high-voltage interface (401), and a negative copper busbar (502) for electrically connecting the negative terminal of the battery module (1) to the negative high-voltage interface (402). The positive copper busbar (501) is provided with a positive docking part (5011) extending from the end of the Y-direction wiring space (2021) away from the BMS component (3) to the positive high voltage interface (401). The negative electrode copper busbar (502) is provided with a negative electrode docking part (5021) extending from the lower part of the X-direction wiring space (2022) to dock with the negative electrode high voltage interface (402).

7. The wire harness arrangement structure according to claim 6, characterized in that, The dividing beam (201) has an L-shaped structure, including a vertical part (2011) for installing and fixing the main body of the positive copper busbar (501) and the negative copper busbar (502), and a horizontal part (2012) connected to the bottom of the vertical part (2011) for fixing the low voltage wire harness (6). The horizontal part (2012) is provided with a clearance groove (2012a) for the negative electrode docking part (5021) to pass through at the position corresponding to the negative electrode docking part (5021).

8. The wire harness arrangement structure according to claim 7, characterized in that, The vertical part (2011) is provided with a plurality of first locking holes, and an insulating buckle (7) is snapped into the first locking hole. The insulating buckle (7) is provided with a copper busbar through groove for the main body part to pass through and fix the main body part. The horizontal part (2012) is provided with a plurality of second locking holes, and a wire harness buckle (8) is installed at the second locking hole. The wire harness buckle (8) is provided with a wire harness through groove for the low voltage wire harness (6) to pass through and fix the low voltage wire harness (6).

9. The wire harness arrangement structure according to claim 1, characterized in that, The battery housing (2) has a low-voltage communication connector (9) located on its circumferential surface near the X-direction wiring space (2022). The low-voltage wiring harness (6) is electrically connected to the low-voltage communication connector (9) via the X-direction wiring space (2022).

10. A battery pack, characterized in that, include: The wire harness arrangement structure according to any one of claims 1-9; The battery module (1) is located in the battery compartment (203) of the wiring harness arrangement structure and is electrically connected to each of the high-voltage interfaces through the high-voltage copper busbar assembly (5) and electrically connected to each of the low-voltage interfaces through the low-voltage wiring harness (6).

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