A positive and negative electrode wiring structure, an integrated junction box and a battery pack

Abstract

The application relates to a positive and negative electrode wiring structure, an integrated wiring box and a battery pack. The positive and negative electrode wiring structure comprises a wiring box and a high-voltage wire harness. The wiring box comprises a base and an upper cover, the base is provided with a connecting piece sliding in a first direction, an elastic piece is arranged between the connecting piece and the base, the connecting piece is in a first position when the elastic piece is released, a protrusion is arranged on the upper cover, and the protrusion is in abutment with the connecting piece when the connecting piece is in the first position. The high-voltage wire harness is slid into the base in the first direction, and a push block is arranged at the end of the high-voltage wire harness. The connecting piece comprises a positive electrode connecting piece and a negative electrode connecting piece, and the positive electrode connecting piece and the negative electrode connecting piece correspond to the positive electrode and the negative electrode of the battery pack respectively. The high-voltage wire harness comprises a positive electrode wire harness and a negative electrode wire harness, and the push blocks of the positive electrode wire harness and the negative electrode wire harness are reversely arranged. The positive and negative electrode wiring structure can solve the problems that the positive and negative electrodes are easily connected reversely and forgotten to be fixed in the prior art.

Description

Technical Field

[0001] This application relates to the field of power battery technology, specifically to a positive and negative terminal wiring structure, an integrated junction box, and a battery pack. Background Technology

[0002] In practical applications, to ensure ease of wiring, power batteries typically integrate low-voltage communication interfaces and high-voltage connectors at the battery pack end. The low-voltage communication port primarily connects the battery pack to the vehicle controller, transmitting the battery pack's operating status to the control unit. The high-voltage connector consists of a positive high-voltage connector and a negative high-voltage connector, which connect to the positive and negative terminals of the battery pack, respectively.

[0003] In existing technologies, during wiring, the high-voltage connector must be connected strictly according to the positive and negative terminals. Reversing the connection can lead to battery pack bulging or even explosion. However, in actual wiring, errors often occur, resulting in the high-voltage connector being connected to the battery pack in the wrong direction. Furthermore, the high-voltage connector not only needs to be connected to the corresponding position but also needs to be secured with bolts. However, in actual wiring, it's possible to forget to secure it with bolts. In integrated systems, it's impossible to directly determine whether it's secured, often requiring voltage or current detection, making the overall detection process quite cumbersome.

[0004] Therefore, there is an urgent need to provide a wiring structure that can solve the problems of reversed positive and negative terminals and forgetting to fix them when wiring high-voltage connectors in the existing technology, improve the accuracy of wiring and overall assembly process, and improve assembly efficiency. Utility Model Content

[0005] The purpose of this application is to provide a positive and negative wiring structure, an integrated junction box and a battery pack, which can solve the problems of reversed positive and negative connections and forgetting to fix them when wiring high-voltage connectors in the prior art, improve the accuracy of wiring and overall assembly process, and improve assembly efficiency.

[0006] To achieve the above objectives, in a first aspect, this application provides a positive and negative terminal wiring structure, disposed at the end of a battery pack for connection to the positive and negative terminals of the battery pack. The positive and negative terminal wiring structure includes a junction box and a high-voltage wiring harness. The junction box includes a base and a top cover. A connecting piece is slidably disposed on the base along a first direction. An elastic element is disposed between the connecting piece and the base. When the elastic element is released, the connecting piece is in a first position. A protrusion is disposed on the top cover. When the connecting piece is in the first position, the protrusion abuts against the connecting piece to prevent the top cover from being fastened to the base. The high-voltage wiring harness slides through the base along the first direction. A push block is disposed at the end of the high-voltage wiring harness. The push block can push the connecting piece to move along the first direction and compress the elastic element. The connecting piece includes a positive terminal connecting piece and a negative terminal connecting piece, which correspond to the positive and negative terminals of the battery pack, respectively. The high-voltage wiring harness includes a positive terminal wiring harness and a negative terminal wiring harness. The push blocks at the ends of the positive and negative terminal wiring harnesses are arranged in opposite directions. Along the first direction, the positive electrode harness is set with the positive electrode connector, and the negative electrode harness is set with the negative electrode connector.

[0007] Based on the above embodiments of this application, during specific wiring, the high-voltage harness is passed through the base of the junction box and then connected to the positive and negative terminals of the battery pack by direct contact. At this time, it is necessary to avoid reverse connection due to misoperation, that is, it is necessary to ensure that the positive harness is connected to the positive terminal of the battery pack and the negative harness is connected to the negative terminal of the battery pack.

[0008] With the above-described configuration of this application, during wiring, the high-voltage harness slides along the first direction and passes through the base. Subsequently, the push block at the end of the high-voltage harness pushes the connecting piece from the first position along the first direction and compresses the elastic element. When the high-voltage harness is installed in the predetermined position, it is connected to the base by bolts or other structures. At this time, both the connection between the high-voltage harness and the battery pack and the high-voltage harness can be achieved, and the high-voltage harness can be fixed. However, if, in some cases, due to operational errors, the high-voltage harness is not fixed to the base by bolts or other structures, the elastic element will release and push the connecting piece and the high-voltage harness together to move in the opposite direction of the high-voltage harness installation, causing the connecting piece to return to the first position. At this time, when the top cover is fastened to the base, the abutment between the protrusion and the connecting piece will prevent the top cover from fastening. This allows the assembly personnel to directly detect the installation and fixing problems inside the junction box and to fix them in a timely manner.

[0009] Furthermore, by reversing the push blocks at the ends of the positive and negative wire harnesses, and aligning the positive wire harness with the positive connecting piece and the negative wire harness with the negative connecting piece, if the positive and negative wire harnesses are connected incorrectly (i.e., the positive wire harness is inserted into the corresponding position of the negative connecting piece, and the negative wire harness is inserted into the position of the positive connecting piece), the reversed push blocks will prevent the push block at the end of the positive wire harness from pushing the negative connecting piece to move in the first direction. Similarly, the push block at the end of the negative wire harness will also prevent the push block from pushing the positive connecting piece to move. In this case, both the positive and negative connecting pieces will be in the first position, preventing the top cover from being fastened to the base. This allows assemblers to promptly identify the reversed connection and replace the faulty components.

[0010] In summary, this application designs the positive and negative wire harnesses with opposite structures by configuring the end push block of the high-voltage wire harness, the connecting piece inside the junction box, and the protrusion on the top cover. Only when the positive and negative wire harnesses are correctly aligned with their respective connecting pieces can the corresponding connecting pieces be moved. If the connecting pieces do not move, they will abut against the protrusion on the top cover, preventing the top cover from fastening to the base. Furthermore, when the positive and negative wire harnesses are correctly installed but not secured, the elastic element will push the connecting piece back to its first position. Again, the abutment between the connecting piece and the protrusion will prevent the top cover from fastening to the base. In other words, this design allows for timely detection of problems such as reversed installation or forgetting to secure the wire harness during assembly, avoiding rework or troubleshooting, improving the accuracy of wiring and the overall assembly process, and increasing assembly efficiency.

[0011] In some embodiments, a first connection hole is provided on the bottom wall of the base, and a second connection hole is provided on the high-voltage wire harness. When the push block pushes the connecting piece and compresses the elastic element, the second connection hole coincides with the first connection hole, and the fixing bolt passes through the first connection hole and the second connection hole to fix the high-voltage wire harness to the base.

[0012] Based on the embodiments described above, the high-voltage wiring harness is fixed to the base by providing a first connecting hole and a second connecting hole, along with a fixing bolt. The fixing bolt also serves as a conductor between the high-voltage wiring harness and the battery pack. Furthermore, during assembly, when the first connecting hole and the second connecting hole coincide, it indicates that the high-voltage wiring harness is in the appropriate installation position, making the installation process simpler and faster.

[0013] In some embodiments, the high-voltage harness includes a main body and a push block located at the end of the main body. The push block is offset relative to the main body in a second direction, which is perpendicular to the first direction. The positive and negative harnesses are symmetrically arranged along the second direction. The connecting piece is directly opposite the push block along the first direction.

[0014] Based on the above embodiments of this application, the second direction is perpendicular to the first direction, and the push block is offset toward the second direction, that is, the push block is offset to the side. At this time, the positive electrode harness and the negative electrode harness are symmetrically arranged, so that the push block offset directions at their ends are opposite, so that the positive electrode harness and the negative electrode harness cannot abut against the corresponding connecting piece when installed in reverse, so as to detect and adjust in time.

[0015] In some embodiments, a connecting portion is provided between the push block and the main body, and the connecting portion is inclined toward a third direction, which is respectively angled with the first direction and the second direction.

[0016] Based on the above embodiments of this application, by providing a connecting portion inclined towards a third direction, and the third direction being set at an angle to the first and second directions respectively, in conjunction with the push block itself being offset towards the second direction, when the positive and negative wire harnesses are installed in reverse, even if the two wire harnesses are rotated 180° about the first direction as an axis, the push blocks at their ends will still be unable to overlap with the corresponding connecting pieces and push the connecting pieces, thereby further improving the reliability of the aforementioned foolproof function in this application.

[0017] In some embodiments, the base is provided with two first sleeves, which are respectively positioned opposite the positive electrode connecting piece and the negative electrode connecting piece along a first direction. The positive electrode harness and the negative electrode harness are slidably inserted into the two first sleeves along the first direction.

[0018] Based on the above embodiments of this application, by setting two first sleeves, the high-voltage wire harness can first play a certain limiting effect during assembly. The limiting effect allows the high-voltage wire harness to slide stably along the first direction during assembly, thereby allowing the push block at the end of the high-voltage wire harness to stably abut against the corresponding connecting piece, so as to push the connecting piece to move along the first direction and compress the elastic element during assembly.

[0019] In some embodiments, the base is provided with a enclosure, which encloses the base to form a movable compartment. The movable compartment has openings facing the top cover and along the first direction towards the high-voltage wiring harness.

[0020] Based on the above embodiments of this application, by setting up a enclosure to form a movable chamber, a space for the installation and movement of the connecting piece is formed. At the same time, it can also limit the range of movement of the connecting piece, so that the connecting piece can be stably positioned in the first position when it is not pushed by the high-voltage wire harness, and the connecting piece can be stably moved along the first direction and compressed by the elastic element when it is pushed by the high-voltage wire harness.

[0021] In some embodiments, the connecting piece is slidably disposed within the movable chamber, and the elastic element is disposed on the side of the connecting piece away from the high-voltage wire harness, and the elastic element is located between the connecting piece and the inner wall of the movable chamber.

[0022] Based on the above embodiments of this application, the elastic element is fitted inside the movable chamber, which facilitates the fixing of the elastic element and further limits the position of the connecting piece, restricting the range of motion of the connecting piece within the movable chamber.

[0023] In some embodiments, a reinforcing rib is fixedly provided inside the active compartment, and when the connecting piece is in the first position, the reinforcing rib is located on the side of the connecting piece along the second direction.

[0024] Based on the above embodiments of this application, since the push block at the end of the high-voltage wire harness is offset in the second direction, and the connecting piece and the corresponding push block are arranged facing each other in the first direction, the reinforcing rib is arranged on the side of the connecting piece in the second direction. When the positive wire harness and the negative wire harness are installed in reverse, the push block and the connecting piece cannot be aligned, but will instead abut against the reinforcing rib. At this time, the fixed reinforcing rib will block the push block, further reminding the assembly personnel of the assembly error.

[0025] According to a second aspect of this application, an integrated junction box is provided, which includes the above-described positive and negative wiring structure.

[0026] Based on the above embodiments of this application, the integrated junction box provided by this application includes the aforementioned positive and negative wiring structure. Through the above configuration, by setting the high-voltage harness end push block, the internal connecting piece of the junction box, and the protrusion on the top cover, the positive and negative harnesses are configured with opposite structures. Only when they are correctly aligned with the positive and negative connecting pieces can the corresponding connecting pieces be moved. If the connecting pieces do not move, they will abut against the protrusion on the top cover, preventing the top cover from being fastened to the base. Furthermore, when the positive and negative harnesses are correctly installed but not secured, the elastic element will push the connecting piece back to the first position. At this time, the abutment between the connecting piece and the protrusion will also prevent the top cover from being fastened to the base. In other words, the above configuration allows for timely detection of problems such as reversed installation or forgetting to secure during assembly, avoiding rework or troubleshooting, improving the accuracy of wiring and the overall assembly process, and increasing assembly efficiency.

[0027] According to a third aspect of this application, a battery pack is provided, comprising a battery case, battery cells, and the aforementioned integrated junction box. A receiving cavity is formed inside the battery case, and the battery cells are disposed within the receiving cavity. The integrated junction box is disposed on the side of the battery case, with a positive terminal connector and a negative terminal connector corresponding to the positive and negative terminals of the battery cells, respectively.

[0028] Based on the above embodiments of this application, the battery pack provided by this application includes the above-mentioned junction box, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the positive and negative terminal wiring structure provided in the embodiments of this application.

[0031] Figure 2 The explosion of the positive and negative terminal wiring structure provided in the embodiments of this application. Figure 1 .

[0032] Figure 3 The explosion of the positive and negative terminal wiring structure provided in the embodiments of this application. Figure 2 .

[0033] Figure 4 This is a schematic diagram of the internal structure of the positive and negative terminal wiring structure provided in the embodiments of this application.

[0034] Figure 5 This is a schematic diagram of the positive and negative wire harnesses in the positive and negative wiring structure provided in the embodiments of this application. Figure 1 .

[0035] Figure 6 This is a schematic diagram of the positive and negative wire harnesses in the positive and negative wiring structure provided in the embodiments of this application. Figure 2 .

[0036] Explanation of reference numerals in the attached figures 1. Base; 11. First connecting hole; 12. First sleeve; 13. Movable compartment; 14. Reinforcing rib; 2. Top cover; 21. Protrusion; 3. Connecting piece; 31. Positive electrode connecting piece; 32. Negative electrode connecting piece; 4. Elastic element; 5. High voltage wire harness; 51. Push block; 52. Positive electrode wire harness; 53. Negative electrode wire harness; 54. Second connecting hole; 55. Fixing bolt; 56. Main body; 57. Connecting part. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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, in this application, unless otherwise stated, directional terms such as "first direction," "second direction," and "third direction" are based on... Figure 1 and Figure 5 The XYZ coordinate system is defined in this context. Specifically, the X direction refers to the first direction, the Y direction to the second direction, and the Z direction to the third direction. Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In existing technologies, during wiring, the high-voltage connector must be connected strictly according to the positive and negative terminals. Reversing the connection can lead to battery pack bulging or even explosion. However, in actual wiring, errors often occur, resulting in the high-voltage connector being connected to the battery pack in the wrong direction. Furthermore, the high-voltage connector not only needs to be connected to the corresponding position but also needs to be secured with bolts. However, in actual wiring, it's possible to forget to secure it with bolts. In integrated systems, it's impossible to directly determine whether it's secured, often requiring voltage or current detection, making the overall detection process quite cumbersome.

[0044] Therefore, there is an urgent need to provide a wiring structure that can solve the problems of reversed positive and negative terminals and forgetting to fix them when wiring high-voltage connectors in the existing technology, improve the accuracy of wiring and overall assembly process, and improve assembly efficiency.

[0045] To address the aforementioned problems in the prior art, this application provides a positive and negative terminal wiring structure, disposed at the end of the battery pack for connection to the positive and negative terminals of the battery pack. (Reference) Figures 1 to 6 As shown, the positive and negative terminal wiring structure includes a junction box and a high-voltage wiring harness 5. The junction box includes a base 1 and a top cover 2. A connecting piece 3 is slidably disposed on the base 1 along a first direction. An elastic element 4 is disposed between the connecting piece 3 and the base 1. When the elastic element 4 is released, the connecting piece 3 is in a first position. A protrusion 21 is disposed on the top cover 2. When the connecting piece 3 is in the first position, the protrusion 21 abuts against the connecting piece 3 to prevent the top cover 2 from being fastened to the base 1. The high-voltage wiring harness 5 is slidably inserted into the base 1 along the first direction. A push block 51 is disposed at the end of the high-voltage wiring harness 5. The push block 51 can push the connecting piece 3 to move along the first direction and compress the elastic element 4. The connecting piece 3 includes a positive terminal connecting piece 31 and a negative terminal connecting piece 32, which correspond to the positive and negative terminals of the battery pack, respectively. The high-voltage wiring harness 5 includes a positive terminal wiring harness 52 and a negative terminal wiring harness 53. The push blocks 51 at the ends of the positive terminal wiring harness 52 and the negative terminal wiring harness 53 are arranged in opposite directions. Along the first direction, the positive electrode harness 52 is set to correspond with the positive electrode connector 31, and the negative electrode harness 53 is set to correspond with the negative electrode connector 32.

[0046] Based on the above embodiments of this application, when wiring, the high-voltage harness 5 is passed through the base 1 of the junction box, and then connected to the positive and negative terminals of the battery pack by direct contact. At this time, it is necessary to avoid reverse connection due to misoperation, that is, it is necessary to ensure that the positive harness 52 is connected to the positive terminal of the battery pack and the negative harness 53 is connected to the negative terminal of the battery pack.

[0047] With the above-described configuration of this application, during wiring, the high-voltage harness 5 slides along the first direction and passes through the base 1. Subsequently, the push block 51 at the end of the high-voltage harness 5 pushes the connecting piece 3 from the first position along the first direction and compresses the elastic member 4. When the high-voltage harness 5 is installed in the predetermined position, it is connected to the base 1 by bolts or other structures. At this time, both the connection between the high-voltage harness 5 and the battery pack can be made conductive, and the high-voltage harness 5 can be fixed. However, if, in some cases, due to operational errors, the high-voltage harness 5 is not fixed to the base 1 by bolts or other structures, the elastic member 4 will release and push the connecting piece 3 and the high-voltage harness 5 together to move in the opposite direction of the installation of the high-voltage harness 5, so that the connecting piece 3 returns to the first position. At this time, when the top cover 2 is fastened to the base 1, the abutment between the protrusion 21 and the connecting piece 3 will prevent the top cover 2 from fastening. This allows the assembly personnel to directly discover the installation and fixing problems inside the junction box so as to fix them in time.

[0048] Furthermore, by reversing the push block 51 at the end of the positive electrode harness 52 and the push block 51 at the end of the negative electrode harness 53, and by aligning the positive electrode harness 52 with the positive electrode connecting piece 31 and the negative electrode harness 53 with the negative electrode connecting piece 32, if the positive electrode harness 52 and the negative electrode harness 53 are connected in reverse due to misoperation (i.e., the positive electrode harness 52 is inserted into the corresponding position of the negative electrode connecting piece 32, while the negative electrode harness 53 is inserted into the position of the positive electrode connecting piece 31), the reversed push block 51 at the end of the positive electrode harness 52 will prevent it from pushing the negative electrode connecting piece 32 to move in the first direction. Similarly, the push block 51 at the end of the negative electrode harness 53 will also prevent it from pushing the positive electrode connecting piece 31 to move. At this time, both the positive electrode connecting piece 31 and the negative electrode connecting piece 32 are in the first position, preventing the upper cover 2 from being fastened to the base 1. This allows the assembler to promptly detect the reversed connection and replace the harness in a timely manner.

[0049] In summary, this application, through the design of structures such as the end push block 51 of the high-voltage wire harness 5, the connecting piece 3 inside the junction box, and the protrusion 21 of the upper cover 2, sets the positive wire harness 52 and the negative wire harness 53 to opposite structures. Only when they are correctly aligned with the positive connecting piece 31 and the negative connecting piece 32, respectively, can the corresponding connecting piece 3 be moved. If the connecting piece 3 is not moved, it will abut against the protrusion 21 of the upper cover 2, preventing the upper cover 2 from being fastened to the base 1. Furthermore, when the positive wire harness 52 and the negative wire harness 53 are correctly installed but not secured, the elastic element 4 will push the connecting piece 3 back to the first position. At this time, the abutment between the connecting piece 3 and the protrusion 21 will also prevent the upper cover 2 from being fastened to the base 1. In other words, through the above-mentioned design, problems such as reverse installation or forgetting to secure the wire harness during the assembly process can be detected in time, avoiding rework or troubleshooting, improving the accuracy of wiring and the overall assembly process, and increasing assembly efficiency.

[0050] Specifically, during actual assembly, a connecting strip can be installed at a corresponding position on the bottom wall of the base 1, and then the connecting strip can be connected to the positive or negative terminal of the battery pack. The corresponding position refers to the location of the end of the high-voltage harness 5 when the pusher 51 pushes the connecting piece 3 along the first direction and fully compresses the elastic element 4. At this time, the end of the high-voltage harness 5 contacts the connecting strip, thereby achieving connection and conduction with the battery pack.

[0051] refer to Figures 4 to 6 As shown in some embodiments of this application, a first connection hole 11 is provided on the bottom wall of the base 1, and a second connection hole 54 is provided on the high-voltage wire harness 5. When the push block 51 pushes the connecting piece 3 and compresses the elastic member 4, the second connection hole 54 coincides with the first connection hole 11, and the fixing bolt 55 passes through the first connection hole 11 and the second connection hole 54 to fix the high-voltage wire harness 5 to the base 1.

[0052] Based on the embodiments described above, by providing the first connecting hole 11 and the second connecting hole 54, when the end of the high-voltage harness 5 is installed in the predetermined position, the high-voltage harness 5 is fixed to the base 1 through the two connecting holes and the fixing bolt 55, thus preventing the elastic member 4 from pushing the connecting piece 3 back to the first position. The fixing bolt 55 can also serve as a conductor between the high-voltage harness 5 and the battery pack. Furthermore, during assembly, when the first connecting hole 11 and the second connecting hole 54 coincide, it indicates that the high-voltage harness 5 is in the appropriate installation position, making the installation process simpler and faster.

[0053] In some embodiments, when a connecting strip is provided on the bottom wall of the base 1 for connection and conduction with the battery pack, the end of the high-voltage harness 5 can be pressed tightly by the fixing bolt 55 so that it is in stable contact with the connecting strip, thus ensuring the stability of the connection between the high-voltage harness 5 and the battery pack.

[0054] In this application, the high-voltage wiring harness 5 can be configured with any suitable structure. (See reference) Figure 5 As shown in the exemplary embodiment provided in this application, the high-voltage harness 5 may include a main body 56 and a push block 51 located at the end of the main body 56. The push block 51 is offset relative to the main body 56 toward a second direction, which is perpendicular to the first direction. The positive electrode harness 52 and the negative electrode harness 53 are symmetrically arranged along the second direction. The connecting piece 3 is directly opposite the push block 51 along the first direction.

[0055] Based on the above embodiments of this application, the second direction is perpendicular to the first direction, and the push block 51 is offset toward the second direction, that is, the push block 51 is offset to the side. At this time, the positive electrode harness 52 and the negative electrode harness 53 are symmetrically arranged, so that the push blocks 51 at their ends are offset in opposite directions, so that the positive electrode harness 52 and the negative electrode harness 53 cannot abut against the corresponding connecting piece 3 when installed in reverse, so as to detect and adjust in time.

[0056] Furthermore, in some embodiments of this application, a connecting portion 57 may be provided between the push block 51 and the main body 56. The connecting portion 57 is inclined toward a third direction, and the third direction is set at an angle to the first direction and the second direction, respectively.

[0057] Specifically, in actual use, the third direction can be perpendicular to both the first and second directions.

[0058] Based on the above embodiments of this application, by providing a connecting portion 57 inclined towards a third direction, and the third direction being set at an angle to the first and second directions respectively, in conjunction with the push block 51 itself being offset towards the second direction, when the positive electrode harness 52 and the negative electrode harness 53 are installed in reverse, even if the two harnesses are rotated 180° about the first direction as an axis, the push blocks 51 at their ends will still be unable to overlap with the corresponding connecting piece 3 and push the connecting piece 3, thereby further improving the reliability of the above-mentioned foolproof function in this application.

[0059] Specifically, further reference Figure 5 and Figure 6 As shown, in which, Figure 5 The diagram shows the structure of the positive electrode harness 52 and the negative electrode harness 53 under normal assembly conditions. Figure 6 This demonstrates the situation where the positive electrode harness 52 remains in its normal state, while the negative electrode harness 53 is rotated 180° around the first direction. A comparison shows that, after the rotation, the push block 51 of the negative electrode harness 53 is located on the same side in the second direction as the positive electrode harness 52. However, due to the connection portion 57 tilted towards the third direction, there is still a deviation between the push block 51 of the negative electrode harness 53 and the push block 51 of the positive electrode harness 52, preventing the push block 51 at the end of the negative electrode harness 53 from being directly aligned with the positive electrode connecting piece 31. Furthermore, even though the push block 51 at the end of the negative electrode harness 53 can partially abut against the positive electrode connecting piece 31 to push it, problems still arise when actually fixing the negative electrode harness 53 to the base plate of the base 1 using the fixing bolts 55. Therefore, the problem of reverse installation can still be quickly identified.

[0060] In this application, the base 1 and the top cover 2 can be configured with any suitable structure. (See reference) Figure 1 and Figure 2 As shown in an exemplary embodiment of this application, the base 1 may be provided with two first sleeves 12, which are respectively positioned opposite the positive electrode connecting piece 31 and the negative electrode connecting piece 32 along a first direction. The positive electrode harness 52 and the negative electrode harness 53 are respectively slidably inserted into the two first sleeves 12 along the first direction.

[0061] Based on the above embodiments of this application, by setting two first sleeves 12, the high-voltage wire harness 5 can be limited during assembly. The limiting effect allows the high-voltage wire harness 5 to slide stably along the first direction during assembly, thereby allowing the push block 51 at the end of the high-voltage wire harness 5 to stably abut against the corresponding connecting piece 3, so as to push the connecting piece 3 to move along the first direction and compress the elastic member 4 during assembly.

[0062] refer to Figure 4 As shown in some embodiments of this application, a barrier may be provided on the base 1, and the barrier encloses the base 1 to form a movable compartment 13. The movable compartment 13 has openings facing the upper cover 2 and along the first direction towards the high voltage harness 5.

[0063] Based on the above embodiments of this application, by setting up a enclosure to form an active compartment 13, it serves as the installation space and activity space for the connecting piece 3. At the same time, it can also limit the range of movement of the connecting piece 3, so that the connecting piece 3 can be stably positioned in the first position when it is not pushed by the high-voltage wire harness 5, and also so that the connecting piece 3 can stably move along the first direction and compress the elastic member 4 when it is pushed by the high-voltage wire harness 5.

[0064] In addition, in order to further limit the movement trajectory of the connecting piece 3, in some other embodiments of this application, a guide ridge can be provided on the inner wall of the movable compartment 13 along the first direction, and a guide groove can be opened on the connecting piece 3. The sliding trajectory of the connecting piece 3 can be limited by the sliding cooperation between the guide groove and the guide ridge, so that the connecting piece 3 can move stably along the first direction.

[0065] refer to Figure 4 As shown in some embodiments of this application, the connecting piece 3 is slidably disposed in the movable chamber 13, the elastic element 4 is disposed on the side of the connecting piece 3 away from the high voltage harness 5, and the elastic element 4 is located between the connecting piece 3 and the inner wall of the movable chamber 13.

[0066] Based on the above embodiments of this application, the elastic element 4 is disposed in the movable chamber 13, which facilitates the fixing of the elastic element 4 and further limits the position of the connecting piece 3, restricting the range of motion of the connecting piece 3 within the movable chamber 13.

[0067] Furthermore, in practical applications, the elastic element 4 can be configured with any suitable structure. (Reference) Figure 4 As shown in the exemplary embodiment provided in this application, the elastic element 4 can be configured as a spring, utilizing the advantages of spring elasticity and stability to stably push the connecting piece 3. Alternatively, in some other embodiments of this application, an elastic structure such as a rubber block can be selected as the elastic element 4. The specific selection can be made according to actual usage requirements, and this application does not impose specific limitations on this.

[0068] refer to Figure 4 As shown in some embodiments of this application, a reinforcing rib 14 is fixedly provided inside the active compartment 13. When the connecting piece 3 is in the first position, the reinforcing rib 14 is located on the side of the connecting piece 3 along the second direction.

[0069] Based on the above embodiments of this application, since the push block 51 at the end of the high voltage harness 5 is offset in the second direction, and the connecting piece 3 and the corresponding push block 51 are arranged facing each other in the first direction, the reinforcing rib 14 is arranged on the side of the connecting piece 3 in the second direction. When the positive electrode harness 52 and the negative electrode harness 53 are installed in reverse, the push block 51 and the connecting piece 3 cannot be aligned, but will instead abut against the reinforcing rib 14. At this time, the fixed reinforcing rib 14 will block the push block 51, further reminding the assembly personnel of the assembly error.

[0070] Based on the above technical solutions, this application embodiment also provides an integrated junction box, which includes the above-mentioned positive and negative wiring structure.

[0071] Based on the above embodiments of this application, the integrated junction box provided by this application includes the aforementioned positive and negative wiring structure. Through the above configuration, by setting the end push block 51 of the high-voltage harness 5, the connecting piece 3 inside the junction box, and the protrusion 21 of the upper cover 2, the positive harness 52 and the negative harness 53 are configured with opposite structures. Only when they are correctly aligned with the positive connecting piece 31 and the negative connecting piece 32, respectively, can the corresponding connecting piece 3 be moved. If the connecting piece 3 is not moved, it will abut against the protrusion 21 of the upper cover 2, preventing the upper cover 2 from being fastened to the base 1. Furthermore, when the positive harness 52 and the negative harness 53 are correctly installed but not secured, the elastic element 4 will push the connecting piece 3 back to the first position. At this time, the abutment between the connecting piece 3 and the protrusion 21 will also prevent the upper cover 2 from being fastened to the base 1. In other words, the above configuration allows for timely detection of problems such as reversed installation or forgetting to secure during assembly, avoiding rework or troubleshooting, improving the accuracy of wiring and the overall assembly process, and increasing assembly efficiency.

[0072] Furthermore, in other embodiments of this application, the integrated junction box is not limited to the above structure. For example, in some embodiments, a fuse may also be installed in the integrated junction box, connected in series with the battery pack, to provide protection when the battery pack circuit current is too high. The specific structure of the integrated junction box can be configured according to actual conditions, and this application does not impose specific limitations on it.

[0073] Based on the above technical solutions, this application embodiment also provides a battery pack, which includes a battery box, battery cells, and the aforementioned integrated junction box. A receiving cavity is formed inside the battery box, and the battery cells are disposed within the receiving cavity. The integrated junction box is disposed on the side of the battery box, with a positive terminal connecting piece 31 and a negative terminal connecting piece 32 corresponding to the positive and negative terminals of the battery cells, respectively.

[0074] Based on the above embodiments of this application, the battery pack provided by this application includes the above-mentioned junction box, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0075] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0076] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0077] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A positive and negative terminal wiring structure, disposed at the end of a battery pack for connection to the positive and negative terminals of the battery pack, characterized in that, The positive and negative terminal wiring structure includes: A junction box includes a base and a top cover. A connecting piece is slidably disposed on the base along a first direction. An elastic element is disposed between the connecting piece and the base. When the elastic element is released, the connecting piece is in a first position. A protrusion is disposed on the top cover. When the connecting piece is in the first position, the protrusion abuts against the connecting piece to prevent the top cover from being fastened to the base. A high-voltage wire harness is slidably inserted into the base along the first direction. A push block is provided at the end of the high-voltage wire harness. The push block can push the connecting piece to move along the first direction and compress the elastic element. The connecting piece includes a positive electrode connecting piece and a negative electrode connecting piece, which correspond to the positive and negative electrodes of the battery pack, respectively. The high-voltage harness includes a positive electrode harness and a negative electrode harness, and the push blocks at the ends of the positive electrode harness and the negative electrode harness are arranged in opposite directions. Along the first direction, the positive electrode wire harness is arranged correspondingly to the positive electrode connecting piece, and the negative electrode wire harness is arranged correspondingly to the negative electrode connecting piece.

2. The positive and negative terminal wiring structure according to claim 1, characterized in that, The base has a first connection hole on its bottom wall and the high-voltage wire harness has a second connection hole. When the push block pushes the connecting piece and compresses the elastic element, the second connection hole coincides with the first connection hole. The fixing bolt passes through the first connection hole and the second connection hole to fix the high-voltage wire harness to the base.

3. The positive and negative terminal wiring structure according to claim 1, characterized in that, The high-voltage wire harness includes a main body and a pusher block located at the end of the main body. The pusher block is offset relative to the main body in a second direction, which is perpendicular to the first direction. The positive wire harness and the negative wire harness are symmetrically arranged along the second direction. The connecting piece is directly opposite the push block along the first direction.

4. The positive and negative terminal wiring structure according to claim 3, characterized in that, A connecting part is provided between the push block and the main body. The connecting part is inclined towards a third direction, and the third direction is set at an angle to the first direction and the second direction, respectively.

5. The positive and negative terminal connection structure according to any one of claims 1-4, characterized in that, The base is provided with two first sleeves, and the two first sleeves are respectively positioned facing the positive electrode connecting piece and the negative electrode connecting piece along the first direction; The positive electrode harness and the negative electrode harness are slidably inserted into the two first sleeves along the first direction, respectively.

6. The positive and negative terminal connection structure according to any one of claims 1-4, characterized in that, The base is provided with a barrier, which encloses a movable compartment on the base. The movable compartment has openings facing the top cover and along the first direction towards the high-voltage wiring harness.

7. The positive and negative terminal wiring structure according to claim 6, characterized in that, The connecting piece is slidably disposed within the movable compartment, and the elastic element is disposed on the side of the connecting piece away from the high-voltage wire harness, with the elastic element located between the connecting piece and the inner wall of the movable compartment.

8. The positive and negative terminal wiring structure according to claim 6, characterized in that, The active compartment is fixedly provided with reinforcing ribs. When the connecting piece is in the first position, the reinforcing ribs are located on the side of the connecting piece along the second direction.

9. An integrated junction box, characterized in that, The integrated junction box includes a positive and negative terminal wiring structure as described in any one of claims 1-8.

10. A battery pack, characterized in that, The battery pack includes: The battery box has an internal cavity for receiving the contents. The battery cell is disposed within the receiving cavity; and, The integrated junction box as described in claim 9 is disposed on the side of the battery box, and the positive electrode connecting piece and the negative electrode connecting piece correspond to the positive electrode and the negative electrode of the battery cell, respectively.

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