High-voltage connection structure

Abstract

This application relates to the field of battery technology and provides a high-voltage connection structure. The high-voltage connection structure of this application includes a high-voltage connector having a first busbar and a second busbar, and a protective seat disposed on the high-voltage connector; the protective seat has a first limiting portion that restricts the torsion of the first busbar and a second limiting portion that restricts the torsion of the second busbar. The high-voltage connection structure of this application can solve the problem of large deformation of the busbar due to stress during installation when using screw connections in conventional technologies, thereby improving the electrical performance, structural stability, and safety performance of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a high-voltage connection structure. Background Technology

[0002] Currently, new energy vehicles often use a large number of high-voltage connectors. These connectors typically include a housing (also known as an outer plastic shell), a busbar (also known as a busbar) located within the housing, and a support body (or inner plastic shell) for supporting the busbar. The busbar is often connected to other conductive components using a screw connection. The advantages of this connection method are its high reliability, the mechanical force generated by the screw connection can withstand the vibration of the vehicle, and the cost of using a screw connection is relatively low. However, using a screw connection can lead to a large deformation of the busbar due to stress during installation, which is not conducive to ensuring the electrical performance, mechanical stability, and safety performance of the high-voltage connection structure. Utility Model Content

[0003] In view of this, this application aims to propose a high-voltage connection structure that is beneficial to improving the overall electrical and safety performance of the structure.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] A high-voltage connection structure includes a high-voltage connector having a first busbar and a second busbar, and a protective seat disposed on the high-voltage connector;

[0006] The first bus and the second bus are arranged vertically at intervals. The first bus is used to connect to the main positive relay, and the second bus is used to connect to the main negative relay.

[0007] The protective seat has a first limiting part that restricts the torsion of the first busbar and a second limiting part that restricts the torsion of the second busbar.

[0008] Furthermore, the protective base and the high-voltage connector are detachably connected.

[0009] Furthermore, the high-voltage connector includes a base, and a first support and a second support disposed on the base. The first support covers a portion of the first busbar, and the second support covers a portion of the second busbar. The protective seat includes a mounting portion that is plugged into and connected to both the first support and the second support. The first limiting portion and the second limiting portion are both disposed on the mounting portion.

[0010] Furthermore, the mounting part includes a mounting base plate arranged opposite to the base, and a frame and a partition plate disposed on the mounting base plate facing the base. The mounting base plate and the frame together form an insertion space. The partition plate divides the insertion space into a first slot and a second slot arranged vertically. The frame has a first opening communicating with the first slot and a second opening communicating with the second slot on one side along the left-right direction of the base. The first support body is inserted into the first slot through the first opening, and the second support body is inserted into the second slot through the second opening.

[0011] Furthermore, the mounting base plate is provided with a first clearance groove and a second clearance groove corresponding to the first busbar and the second busbar. The first limiting part is formed by the groove wall of the first clearance groove, and the second limiting part is formed by the groove wall of the second clearance groove. The groove wall of the first clearance groove located below the first busbar is provided with an upward-opening groove, and the groove wall of the second clearance groove located above the second busbar is provided with a downward-opening groove.

[0012] Furthermore, the upper and lower sides of the partition are provided with guide protrusions arranged in the left-right direction of the base, and the first support and the second support are provided with guide grooves, with each guide protrusion inserted into the guide groove in a corresponding manner; and / or, the partition is provided with a cable outlet groove arranged in the front-back direction of the base, the cable outlet groove being used for interlocking wire harnesses to pass through.

[0013] Furthermore, it also includes a first conductive bus, a second conductive bus, a first protective cover, and a second protective cover; one end of the first conductive bus is connected to the first busbar, and the other end of the first conductive busbar is used to connect to the main positive relay; one end of the second conductive busbar is connected to the second busbar, and the other end of the second conductive busbar is used to connect to the main negative relay; the first protective cover covers the connection point between the first busbar and the first conductive busbar, and the second protective cover covers the connection point between the second busbar and the second conductive busbar.

[0014] Furthermore, both the first protective cover and the second protective cover include a cover body and a mounting frame disposed on one side of the cover body along the left-right direction of the base. The mounting frame on the first protective cover is fitted onto the first conductive busbar, and the mounting frame on the second protective cover is fitted onto the second conductive busbar.

[0015] Furthermore, the insulating layer on the first conductive bar extends at least partially into the mounting frame of the first protective cover, and the insulating layer on the second conductive bar extends at least partially into the mounting frame of the second protective cover; and / or, the top of the mounting base plate is provided with a recessed limiting step, one side of the first protective cover overlaps on the limiting step along the front-rear direction of the base, and the other side of the first protective cover overlaps on the second protective cover.

[0016] Furthermore, the protective base has an isolation portion located between the first busbar and the second busbar, the isolation portion at least partially separating the first busbar and the second busbar in the vertical direction, and the isolation portion is provided with a third clearance groove for avoiding the connector connecting the first busbar and the first conductive busbar; and / or, the first conductive busbar is covered with a shielding layer for high voltage shielding, and the second conductive busbar is covered with a protective layer for protection.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] (1) The high-voltage connection structure of this utility model, by setting a protective seat, and the protective seat is provided with a first limiting part that restricts the torsion of the first busbar and a second limiting part that restricts the torsion of the second busbar, can reduce the stress deformation of the first busbar and the second busbar when screwed with other conductive parts, and solve the problem that the busbar is subjected to large stress and deformation when using screw connection in the traditional technology. This can help improve the electrical performance, mechanical stability and safety performance of the high-voltage connection structure, thereby benefiting the safety quality of the battery pack.

[0019] (2) The protective seat and the high-voltage connector are detachably connected, which facilitates the convenient disassembly and replacement of the protective seat.

[0020] (3) The first support body covers part of the first busbar and the second support body covers part of the second busbar, which helps to ensure the installation stability of the first busbar and the second busbar. The protective seat is connected to both the first support body and the second support body through the mounting part, and the protective seat and the high voltage connector can be conveniently disassembled and assembled by the plug-in form.

[0021] (4) By setting a first slot and a second slot, and inserting the first support into the first slot through the first opening and the second support into the second slot through the second opening, the structure can be simplified, which is conducive to the preparation and cost reduction of the protective seat, and also facilitates the insertion of the protective seat into the high-voltage connector.

[0022] (5) The first limiting part is formed by the groove wall of the first clearance groove, and the second limiting part is formed by the groove wall of the second clearance groove. This can make full use of the protective seat structure, simplify the structure, facilitate the preparation of the protective seat and reduce costs. The setting of the two grooves can enable the protective seat to release at least part of the stress and reduce the risk of the protective seat breaking even when the first busbar and the second busbar are slightly deformed.

[0023] (6) The guide protrusions are arranged along the left-right direction of the base, and are connected one-to-one with the guide grooves. This guides the first support to be inserted into the first slot and the second support to be inserted into the second slot. It also works with the frame to prevent the protective seat from falling off along the front-back direction of the base, thus ensuring the stability of the protective seat's insertion. At the same time, the cable outlet groove helps guide the arrangement direction of the interlocking wire harness and fixes the interlocking wire harness to a certain extent.

[0024] (7) The first protective cover can prevent the connection point of the first busbar and the first conductive busbar from being exposed. The second protective cover can prevent the connection point of the second busbar and the second conductive busbar from being exposed, thereby reducing the risk of accidental electric shock to the operator and the risk of short circuit caused by metal foreign objects touching the two connection points.

[0025] (8) Both the first protective cover and the second protective cover include a cover body and a mounting frame, and each mounting frame is respectively fitted onto the first conductive bar and the second conductive bar, which facilitates the assembly of the first protective cover and the second protective cover.

[0026] (9) The insulating layer on the first conductive busbar extends at least partially into the mounting frame of the first protective cover, and the insulating layer on the second conductive busbar extends at least partially into the mounting frame of the second protective cover. This avoids the exposure of the metal parts of the first and second conductive buses, thus preventing operators from being electrocuted or experiencing short circuits. Simultaneously, by having one side of the first protective cover overlap the limiting step and the other side overlap the second protective cover, the installation of the first protective cover is limited, improving its installation stability.

[0027] (10) The isolation section facilitates electrical isolation between the first busbar and the second busbar; the third clearance groove prevents interference with the connection between the first busbar and the first conductive bar. Simultaneously, the first conductive bar is covered with a shielding layer for high-voltage shielding, preventing arcing between the first conductive bar and the second conductive bar under extreme conditions, which could cause thermal runaway of the battery pack. The second conductive bar is covered with a protective layer for protection, preventing other objects from damaging the insulation layer of the second conductive bar. This allows the first and second conductive bars to form a high-voltage circuit within a confined space. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the high-voltage connection structure described in this embodiment of the invention, when assembled with the main positive relay and the main negative relay.

[0030] Figure 2 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0031] Figure 3 This is a schematic diagram of the high-voltage connection structure described in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A schematic diagram of the structure shown from another perspective;

[0033] Figure 5 for Figure 3 A partial structural diagram of the structure shown;

[0034] Figure 6 and Figure 7 for Figure 5 A schematic diagram of the structure shown in the diagram from another perspective;

[0035] Figure 8 This is a schematic diagram of the assembly of the high-voltage connector and protective base according to an embodiment of the present invention;

[0036] Figure 9 for Figure 8 A schematic diagram of the structure shown from another perspective;

[0037] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0038] Figure 11 and Figure 12 These are schematic diagrams of the structure of the first protective cover described in this embodiment of the present invention from different perspectives;

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. High-voltage connectors;

[0041] 101. Base; 102a. First busbar; 102b. Second busbar; 103a. First support body; 103b. Second support body; 1031. Guide groove;

[0042] 200. Protective seat;

[0043] 201. Mounting base plate; 2011. First clearance groove; 2012. Second clearance groove; 2015. Groove; 2016. Limiting step; 202. Frame; 203. Partition plate; 2031. Cable outlet groove; 2032. Guide protrusion; 204. Isolation part; 2041. Third clearance groove;

[0044] 300a, First conductive busbar; 300b, Second conductive busbar;

[0045] 301. Insulation layer; 302. Shielding layer; 303. Protective layer;

[0046] 400a, First protective cover; 400b, Second protective cover;

[0047] 401. Cover body; 402. Mounting frame;

[0048] 500. Fasteners; 600. Interlocking harnesses; 700. Connecting harnesses. Detailed Implementation

[0049] To make the technical solution 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.

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0051] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and 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. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0053] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0055] The embodiments of this application provide a high-voltage connection structure, which helps to solve the problem that the busbar is subjected to large deformation due to stress during installation when using screw connection in the traditional technology, thereby improving the overall electrical performance and safety performance of the structure.

[0056] In related technologies, a high-voltage connector 100 typically includes a base 101 (also called a housing or outer plastic shell), a busbar (also called a busbar) disposed in the base 101, and a support body (or inner plastic shell) for supporting the busbar. The busbar is often connected to other conductive components by screwing. The advantage of this connection method is that it has high connection reliability, the mechanical force generated by the screwing can resist the vibration of automotive-grade components, and the cost of screwing is relatively low. However, the screwing method has the problem that the busbar is subjected to force and has a large deformation during installation.

[0057] In view of this, in order to overcome the shortcomings of related technologies, the high-voltage connection structure in this embodiment combines... Figures 1 to 12 As shown, the overall design includes a high-voltage connector 100 with a first busbar 102a and a second busbar 102b, and a protective seat 200 disposed on the high-voltage connector 100.

[0058] The first busbar 102a and the second busbar 102b are arranged vertically at intervals. The first busbar 102a is used to connect to the main positive relay, and the second busbar 102b is used to connect to the main negative relay. The protective base 200 has a first limiting part that restricts the torsion of the first busbar 102a and a second limiting part that restricts the torsion of the second busbar 102b.

[0059] Therefore, by setting up a protective seat 200, and having a first limiting part on the protective seat 200 to limit the torsion of the first busbar 102a and a second limiting part to limit the torsion of the second busbar 102b, the stress deformation of the first busbar 102a and the second busbar 102b when screwed with other conductive parts can be reduced. This solves the problem that the busbars are subjected to large stress and deformation during installation when using screwing in traditional technology. This can help improve the electrical performance, mechanical stability and safety performance of the high-voltage connection structure, thereby improving the safety quality of the battery pack.

[0060] Based on the above overview, specifically, in this embodiment, the first busbar 102a and the second busbar 102b are preferably copper busbars, and the protective base 200 is preferably integrally injection molded. Meanwhile, the main positive relay and the main negative relay can be common relay products found in battery packs, and the high-voltage connector 100 in this embodiment can be located on the lower casing of the battery pack to facilitate connection between the battery pack and the vehicle.

[0061] It should be noted that the direction-related descriptions in this embodiment are merely illustrative examples. In actual implementation, the direction descriptions in this embodiment will vary depending on the orientation of the base 101 in the high-voltage connection structure. That is, each direction in this embodiment refers to a relative coordinate system with the base 101 as the reference.

[0062] Combination Figures 4 to 10 As shown, in some exemplary embodiments, the protective base 200 and the high-voltage connector 100 are detachably connected. This facilitates the easy installation, removal, and replacement of the protective base 200.

[0063] In specific implementations, in some exemplary embodiments, the high-voltage connector 100 of this embodiment includes a base 101, and a first support 103a and a second support 103b disposed on the base 101. The first support 103a covers a portion of the first busbar 102a, and the second support 103b covers a portion of the second busbar 102b. Furthermore, the protective seat 200 includes a mounting portion that is plugged into and connected to both the first support 103a and the second support 103b, and both a first limiting portion and a second limiting portion are disposed on the mounting portion.

[0064] It is understandable that the first support 103a covers part of the first busbar 102a, and the second support 103b covers part of the second busbar 102b, which can form support for the first busbar 102a and the second busbar 102b, so as to ensure the installation stability of the first busbar 102a and the second busbar 102b. Furthermore, the protective seat 200 is connected to both the first support 103a and the second support 103b by plugging in through the mounting part, and the plugging in method can also realize the convenient assembly and disassembly of the protective seat 200 and the high-voltage connector 100.

[0065] Furthermore, in some exemplary embodiments, the mounting part includes a mounting base plate 201 arranged opposite to the base 101, and a frame 202 and a partition 203 disposed on the mounting base plate 201 facing the base 101. The mounting base plate 201 and the frame 202 enclose an insertion space, and the partition 203 divides the insertion space into a first slot and a second slot arranged vertically.

[0066] The frame 202 has a first opening communicating with the first slot and a second opening communicating with the second slot on one side along the left and right direction of the base 101. The first support 103a is inserted into the first slot through the first opening and the second support 103b is inserted into the second slot through the second opening.

[0067] Here, by setting a first slot and a second slot, and allowing the first support 103a to be inserted into the first slot through the first opening and the second support 103b to be inserted into the second slot through the second opening, the structure can be simplified, which is conducive to the preparation and cost reduction of the protective seat 200, and also facilitates the insertion of the protective seat 200 into the high-voltage connector 100.

[0068] At the same time, continue to combine Figures 9 to 10 As shown, in some exemplary embodiments, the mounting base 201 is provided with a first clearance groove 2011 and a second clearance groove 2012 corresponding to the first busbar 102a and the second busbar 102b. The first limiting portion is formed by the groove wall of the first clearance groove 2011, and the second limiting portion is formed by the groove wall of the second clearance groove 2012. Furthermore, the groove wall of the first clearance groove 2011 located below the first busbar 102a is provided with an upward-opening groove 2015, and the groove wall of the second clearance groove 2012 located above the second busbar 102b is provided with a downward-opening groove 2015.

[0069] By having the first limiting part formed by the groove wall of the first clearance groove 2011 and the second limiting part formed by the groove wall of the second clearance groove 2012, the structure of the protective seat 200 can be fully utilized, the structure can be simplified, and the preparation and cost reduction of the protective seat 200 can be facilitated. In addition, the setting of the two grooves 2015 can also allow the protective seat 200 to release at least part of the stress and reduce the risk of the protective seat 200 breaking even when the first busbar 102a and the second busbar 102b are slightly deformed.

[0070] Furthermore, in some exemplary embodiments, the upper and lower sides of the partition 203 of this embodiment are provided with guide protrusions 2032 arranged in the left and right direction of the base 101, and the first support 103a and the second support 103b are provided with guide grooves 1031, and each guide protrusion 2032 is inserted into each guide groove 1031 in a corresponding manner.

[0071] The main advantage of this design is that it can guide the first support 103a into the first slot and the second support 103b into the second slot, and it can also cooperate with the frame 202 to prevent the protective seat 200 from falling off along the front and rear direction of the base 101, so as to ensure the insertion stability of the protective seat 200.

[0072] In specific implementation, based on the cooperative use of each guide protrusion 2032 and each guide groove 1031, the protective seat 200 needs to be inserted into the base 101 from one side in the left-right direction. That is, the first support 103a is inserted into the first slot, the second support 103b is inserted into the second slot, and the guide protrusion 2032 located in the first slot is inserted into the guide groove 1031 on the first support 103a, and the guide protrusion 2032 located in the second insertion slot is inserted into the guide groove 1031 on the second support 103b.

[0073] Meanwhile, in some exemplary embodiments, the partition 203 of this embodiment is provided with a cable outlet groove 2031 arranged along the front-rear direction of the base 101, the cable outlet groove 2031 being used for the interlocking wire harness 600 to pass through. This facilitates guiding the arrangement direction of the interlocking wire harness 600 and, to a certain extent, fixes the interlocking wire harness 600.

[0074] In specific implementation, each of the above-mentioned grooves 2015 has a third opening arranged on the same side as the first opening and the second opening, and the cable outlet groove 2031 also has a fourth opening arranged on the same side as the first opening and the second opening. The main advantage of this arrangement is that it can improve the stress release and dissipation capabilities of each groove 2015, and improve the ease of arrangement of the interlocking harness 600 and other connecting harnesses 700 of the high-voltage connector 100.

[0075] In addition, continue to combine Figures 1 to 12 As shown, in some exemplary embodiments, it also includes a first conductive bar 300a, a second conductive bar 300b, a first protective cover 400a, and a second protective cover 400b.

[0076] In this configuration, one end of the first conductive bus 300a is connected to the first busbar 102a, and the other end of the first conductive bus 300a is used to connect to the main positive relay. One end of the second conductive bus 300b is connected to the second busbar 102b, and the other end of the second conductive bus 300b is used to connect to the main negative relay. A first protective cover 400a covers the connection point between the first busbar 102a and the first conductive bus 300a, and a second protective cover 400b covers the connection point between the second busbar 102b and the second conductive bus 300b.

[0077] Understandably, the first protective cover 400a is installed to prevent the connection point of the first busbar 102a and the first conductive busbar 300a from being exposed, and the second protective cover 400b is installed to prevent the connection point of the second busbar 102b and the second conductive busbar 300b from being exposed. This reduces the risk of operators accidentally being electrocuted and the risk of short circuit caused by metal foreign objects touching the two connection points.

[0078] In specific implementation, we will continue to combine Figures 11 to 12 As shown, in some exemplary embodiments, both the first protective cover 400a and the second protective cover 400b of this embodiment include a cover body 401 and a mounting frame 402 disposed on one side of the cover body 401 along the left-right direction of the base 101. The mounting frame 402 on the first protective cover 400a is fitted onto the first conductive busbar 300a, and the mounting frame 402 on the second protective cover 400b is fitted onto the second conductive busbar 300b.

[0079] This configuration facilitates the assembly of the first protective cover 400a and the second protective cover 400b. Specifically, the assembly of the first protective cover 400a relies on the limiting engagement between the first conductive busbar 300a and its mounting frame 402, while the assembly of the second protective cover 400b relies on the limiting engagement between the second conductive busbar 300b and its mounting frame 402.

[0080] Furthermore, in some exemplary embodiments, the insulating layer 301 on the first conductive bar 300a extends at least partially into the mounting frame 402 of the first protective cover 400a, and the insulating layer 301 on the second conductive bar 300b extends at least partially into the mounting frame 402 of the second protective cover 400b. This arrangement avoids exposing the metal portions of the first conductive bar 300a and the second conductive bar 300b, thus preventing the operator from being electrocuted or experiencing a short circuit.

[0081] Specifically, each insulating layer 301 can extend 2mm, 3mm, or 5mm into the corresponding mounting frame 402 to avoid exposing the metal portions of the first conductive busbar 300a and the second conductive busbar 300b. Furthermore, the mounting frame 402 can be spaced apart from the corresponding insulating layer 301, for example, 0.3mm or 0.5mm, to facilitate the mounting of each mounting frame 402 onto each conductive busbar.

[0082] Meanwhile, in some exemplary embodiments, the top of the mounting base 201 in this embodiment is provided with a recessed limiting step 2016. One side of the first protective cover 400a overlaps the limiting step 2016 along the front-rear direction of the base 101, and the other side of the first protective cover 400a overlaps the second protective cover 400b. This provides a limiting position for the installation of the first protective cover 400a, further improving its installation stability.

[0083] In this embodiment, if necessary, a notch may be provided on one side of the overlapping limiting step 2016 of the first protective cover 400a, so that when the lower edge of the side wall overlaps on the limiting step 2016, it is basically level in the vertical direction compared to the other side overlapping on the second protective cover 400b, thus ensuring that the first protective cover 400a is basically in a horizontal state.

[0084] Furthermore, in this embodiment, the structure of the second protective cover 400b is preferably set to be the same as that of the first protective cover 400a, in order to reduce development and manufacturing costs. It should be mentioned that in this embodiment, the bottom of the cover body of both the first protective cover 400a and the second protective cover 400b is open, so as to cover the two connection points respectively.

[0085] In addition, continue to combine Figures 8 to 10 As shown, in some exemplary embodiments, the protective base 200 has an isolation portion 204 located between the first busbar 102a and the second busbar 102b, the isolation portion 204 at least partially separating the first busbar 102a and the second busbar 102b in the vertical direction, and the isolation portion 204 is provided with a third clearance groove 2041 for avoiding the connector connecting the first busbar 102a and the first conductive busbar 300a.

[0086] Understandably, the isolation section 204 facilitates electrical isolation between the first busbar 102a and the second busbar 102b, increasing the electrical clearance and creepage distance between the vertically arranged first busbar 102a and the second busbar 102b, thus providing electrical safety protection. The third clearance groove 2041 prevents interference with the connection between the first busbar 102a and the first conductive bar 300a.

[0087] In specific cases, the first busbar 102a and the first conductive busbar 300a, as well as the second busbar 102b and the second conductive busbar 300b, are preferably connected by fasteners 500. The fasteners 500 can be bolts, studs, or screws. To improve the ease of screwing, the first busbar 102a and the second busbar 102b are preferably provided with press-fit nuts for screwing. Each fastener 500 passes through the through hole on the corresponding conductive busbar and is screwed into the corresponding press-fit nut.

[0088] The third clearance groove 2041 is designed to avoid the fastener 500 connecting the first busbar 102a and the first conductive busbar 300a. Furthermore, in some exemplary embodiments, the isolation part 204 of this embodiment includes an isolation block provided on the mounting base plate 201, and the third clearance groove 2041 is provided on the isolation block with its opening facing upward.

[0089] It should be mentioned that, Figure 1 , Figure 6 , Figure 9 and Figure 10 The diagram only shows the structural schematics of the interlocking harness 600 and the connecting harness 700. Their arrangement is not limited to the direction shown in the diagram and can be adjusted according to actual layout needs. In this embodiment, if necessary, through holes corresponding to the cable outlet groove 2031 can be provided on the isolation block for the interlocking harness 600 and the connecting harness 700 to pass through.

[0090] In addition, continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, the first conductive bus 300a is covered with a shielding layer 302 for high voltage shielding, and the second conductive bus 300b is covered with a protective layer 303 for protection.

[0091] Understandably, the first conductive busbar 300a is covered with a shielding layer 302 for high-voltage shielding, which can prevent arcing between the first conductive busbar 300a and the second conductive sheet under extreme working conditions, thus preventing thermal runaway of the battery pack. The second conductive busbar 300b is covered with a protective layer 303 for protection, which can prevent other objects from scratching the insulation layer 301 of the second conductive busbar 300b. This facilitates the formation of a high-voltage circuit between the first conductive busbar 300a and the second conductive busbar 300b in a confined space.

[0092] Furthermore, in this embodiment, the first conductive bus 300a is covered with a shielding layer 302 for high-voltage shielding. The first conductive bus 300a and the second conductive bus 300b can be configured to occupy less space to meet the requirement of forming a high-voltage circuit in a confined space. For example, the second conductive bus 300b has a first conductive segment connected to the second bus 102b, a third conductive segment connected to the main negative relay, and a second conductive segment connecting the first conductive segment and the third conductive segment. Specifically, the first conductive segment is arranged along the left-right direction of the base 101, the second conductive segment is parallel to the first conductive segment, and the second conductive segment can be formed by bending the end of the first conductive segment away from the first bus 102a by 180° and then extending it. The third conductive segment is arranged along the up-down direction of the base 101, and the third conductive segment can be formed by bending the end of the second conductive segment away from the first conductive bus 300a upward by 90° and then extending it.

[0093] Furthermore, in this embodiment, the shielding layer 302 is disposed over the insulating layer 301 of the first conductive bus 300a, and the protective layer 303 is disposed over the insulating layer 301 of the second conductive bus 300b. That is, even without the shielding layer 302 and the protective layer 303, there is still insulation protection between the first conductive bus 300a and the second conductive bus 300b. The shielding layer 302 can be made of mica sheet, and the protective layer 303 can be made of cloth tape.

[0094] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A high-voltage connection structure, characterized in that: It includes a high-voltage connector having a first busbar and a second busbar, and a protective seat disposed on the high-voltage connector; The first bus and the second bus are arranged vertically at intervals. The first bus is used to connect to the main positive relay, and the second bus is used to connect to the main negative relay. The protective seat has a first limiting part that restricts the torsion of the first busbar and a second limiting part that restricts the torsion of the second busbar.

2. The high-voltage connection structure according to claim 1, characterized in that: The protective base and the high-voltage connector are detachably connected.

3. The high-voltage connection structure according to claim 2, characterized in that: The high-voltage connector includes a base, and a first support and a second support disposed on the base, wherein the first support covers a portion of the first busbar, and the second support covers a portion of the second busbar; The protective base includes a mounting portion that is plugged into and connected to both the first support body and the second support body, and both the first limiting portion and the second limiting portion are disposed on the mounting portion.

4. The high-voltage connection structure according to claim 3, characterized in that: The mounting part includes a mounting base plate arranged opposite to the base, and a frame and a partition plate disposed on the mounting base plate facing the base. The mounting base plate and the frame enclose and form an insertion space. The partition plate divides the insertion space into a first slot and a second slot arranged vertically. The frame has a first opening communicating with the first slot and a second opening communicating with the second slot on one side along the left-right direction of the base. The first support is inserted into the first slot through the first opening and the second support is inserted into the second slot through the second opening.

5. The high-voltage connection structure according to claim 4, characterized in that: The mounting base plate is provided with a first clearance groove and a second clearance groove corresponding to the first busbar and the second busbar. The first limiting part is formed by the groove wall of the first clearance groove, and the second limiting part is formed by the groove wall of the second clearance groove. The first clearance groove located below the first busbar has an upward-facing groove on its groove wall, and the second clearance groove located above the second busbar has a downward-facing groove on its groove wall.

6. The high-voltage connection structure according to claim 4, characterized in that: The partition plate has guide protrusions on both its upper and lower sides arranged along the left-right direction of the base. Both the first and second supports have guide grooves, and each guide protrusion is inserted into a corresponding guide groove; and / or, The partition plate is provided with a cable outlet groove arranged along the front-rear direction of the base, and the cable outlet groove is used for interlocking wire harnesses to pass through.

7. The high-voltage connection structure according to any one of claims 4 to 6, characterized in that: It also includes a first conductive bus, a second conductive bus, a first protective cover, and a second protective cover; One end of the first conductive busbar is connected to the first busbar, and the other end of the first conductive busbar is used to connect to the main positive relay. One end of the second conductive busbar is connected to the second busbar, and the other end of the second conductive busbar is used to connect to the main negative relay. The first protective cover covers the connection point of the first busbar and the first conductive busbar, and the second protective cover covers the connection point of the second busbar and the second conductive busbar.

8. The high-voltage connection structure according to claim 7, characterized in that: Both the first protective cover and the second protective cover include a cover body and a mounting frame disposed on one side of the cover body along the left-right direction of the base. The mounting frame on the first protective cover is fitted onto the first conductive bar, and the mounting frame on the second protective cover is fitted onto the second conductive bar.

9. The high-voltage connection structure according to claim 8, characterized in that: The insulating layer on the first conductive bus extends at least partially into the mounting frame of the first protective cover, and the insulating layer on the second conductive bus extends at least partially into the mounting frame of the second protective cover; And / or, The top of the mounting base plate is provided with a recessed limiting step. One side of the first protective cover overlaps on the limiting step along the front-back direction of the base, and the other side of the first protective cover overlaps on the second protective cover.

10. The high-voltage connection structure according to claim 7, characterized in that: The protective base has an isolation portion located between the first busbar and the second busbar, the isolation portion at least partially separating the first busbar and the second busbar in the vertical direction, and the isolation portion is provided with a third clearance groove for accommodating a connector connecting the first busbar and the first conductive bar; and / or, The first conductive bus is covered with a shielding layer for high voltage shielding, and the second conductive bus is covered with a protective layer for protection.

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