Integrated device and battery pack

Abstract

The invention discloses an integrated device and a battery pack, the integrated device comprises an integrated support, a battery management system and a low-voltage wire harness are both installed on the integrated support, a first connecting part of the integrated support is connected with the battery management system, and a second connecting part of the integrated support is connected with the low-voltage wire harness. The low-voltage wiring harness is positioned and fixed and is electrically connected with the battery management system, so that the wiring harness is plugged outside the battery box body, the operation space is large, the installation difficulty is reduced, and the working efficiency is improved; the integrated bracket, the battery management system and the low-voltage wire harness are integrated into a first integrated body and are fixedly mounted in the battery box body through the third connecting part of the integrated bracket, so that the battery management system and the low-voltage wire harness can be pre-mounted on the integrated bracket outside the battery box body; according to the battery box, a large operation space is provided for installing the battery management system and the low-voltage wire harness, only the first integrated body needs to be installed in the battery box body, the installation procedures in the battery box body are reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to an integrated device and a battery pack. Background Art

[0002] The existing installation method of the BMS (Battery Management System) for automobiles is: after the battery module is installed in the battery box, the BMS bracket, the wiring harness bracket, and the BMS are installed in the battery box in sequence, and then the wiring harness is fixed and the connector is connected.

[0003] The above processes are all performed inside the battery box. Since the operating space inside the battery box is small, installation is difficult and the installation efficiency of the BMS is low.

[0004] In summary, how to improve the installation efficiency of the battery management system is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of this application is to provide an integrated device and a battery pack to improve the installation efficiency of a battery management system.

[0006] In order to achieve the above objectives, this application provides the following technical solutions: An integrated device includes an integrated bracket, the integrated bracket is used to integrate a battery management system and a low-voltage wiring harness to form a first integrated body, so that the first integrated body can be installed on a battery box; The integrated bracket includes: a bracket plate, a first connection part, a second connection part and a third connection part, all of which are connected to the bracket plate; wherein the first connection part is used to be fixedly connected to the battery management system, the second connection part is used to be fixedly connected to the low-voltage wiring harness through a wiring harness fixing assembly, and the third connection part is used to be fixedly connected to the battery box.

[0007] In some embodiments, the low-voltage wire harness includes at least two first low-voltage wires, the at least two first low-voltage wires are fastened by a cable tie, and the wire harness fixing assembly includes the cable tie.

[0008] In some embodiments, the second connecting portion includes at least one first connecting hole; the cable tie includes a cable tie body and a buckle fixed to one end of the cable tie body, and the buckle can pass through the first connecting hole and be engaged with the first connecting hole.

[0009] In some embodiments, the battery management system has a plug-in terminal connected to the low-voltage wiring harness, the bracket plate is located on a side of the battery management system away from the plug-in terminal, and the axial direction of the first connection hole forms an angle with the bracket plate; And / or, the second connecting portion is located on the top of the bracket plate.

[0010] In some embodiments, there are at least two plug-in terminals, and at least two of the plug-in terminals are distributed sequentially along the first direction; there are at least two first connecting holes, and at least two of the first connecting holes are distributed sequentially along the first direction.

[0011] In some embodiments, the first connection portion includes a first side connection portion and a first lower connection portion, the first side connection portion is used to be fixedly connected to the side surface of the battery management system, and the first lower connection portion is used to be fixedly connected to the bottom surface of the battery management system.

[0012] In some embodiments, the first lower connection portion is located at the bottom of the bracket plate, and the first side connection portion is located at the top of the bracket plate.

[0013] In some embodiments, the integrated bracket further comprises a supporting portion connected to the bracket plate, the supporting portion being used to support the battery management system; wherein the first connecting portion is distributed at both ends of the supporting portion.

[0014] In some embodiments, the third connection portion is vertically connected to the bracket plate; the integrated bracket also includes a bending plate, the bending plate is perpendicular to the bracket plate and the third connection portion, and the bending plate is fixedly connected to the bracket plate body and the third connection portion.

[0015] In some embodiments, there are two third connecting parts, and the two third connecting parts are located at two ends of the bottom of the bracket plate; there are two bending plates, and the two bending plates are symmetrically distributed.

[0016] In some embodiments, an end of the third connection portion away from the bracket plate is flush with an end of the first connection portion away from the bracket plate.

[0017] In some embodiments, the first connection portion is snap-connected with the connection end of the battery management system; Alternatively, the first connecting portion is connected to the connecting end of the battery management system via a threaded fastener.

[0018] In some embodiments, the integrated device further comprises an integrated base, wherein the integrated base is provided with a mounting structure for mounting the high voltage cut-off unit, so as to integrate the high voltage cut-off unit and form a second integrated body; Among them, the high-voltage cut-off unit is connected to the battery management system through a second low-voltage line, a high-voltage line, and the high-voltage cut-off unit has a low-voltage connector and a high-voltage connector. The low-voltage connector is used to connect with the second low-voltage line, and the high-voltage connector is used to connect with the high-voltage line, so that the first assembly and the second assembly are integrated and installed in the battery box.

[0019] In some embodiments, the mounting structure is a second connecting hole; the integrated base is also provided with a mounting hole for connecting with the battery box.

[0020] A battery pack comprises: a battery box and an integrated assembly, wherein the integrated assembly is assembled outside the battery box and installed inside the battery box; Wherein, the integrated assembly includes: a battery management system, a low-voltage wiring harness, and the integrated device as described above; Alternatively, the integrated assembly includes: a battery management system, a low-voltage wiring harness, a second low-voltage wire, a high-voltage wire, a high-voltage cut-off unit, and the integrated device as described above.

[0021] In some embodiments, in the first integrated body, there are at least two integrated brackets, at least two battery management systems, at least two integrated brackets are distributed up and down in the vertical direction, and at least two battery management systems are distributed up and down in the vertical direction; the low-voltage wiring harness includes a trunk and at least two branches, each branch is connected to the trunk, and the branches correspond to the battery management systems one by one; any two branches are distributed in sequence in the vertical direction; among all the integrated brackets distributed up and down in the vertical direction, the integrated bracket located at the top is the first integrated bracket, and all the integrated brackets located on the bottom side of the first integrated bracket are the second integrated brackets; the second connecting portion of the first integrated bracket is connected to the trunk; in the vertical direction, the second connecting portion of each second integrated bracket corresponds to the branch; and the second connecting portion of the second integrated bracket is connected to the branch corresponding to it.

[0022] The integrated device provided in the present application includes an integrated bracket, and the battery management system and the low-voltage wiring harness are both installed on the integrated bracket. The first connecting part of the integrated bracket is connected to the battery management system, and the second connecting part of the integrated bracket is connected to the low-voltage wiring harness. The low-voltage wiring harness is positioned and fixed, and the low-voltage wiring harness and the battery management system are electrically connected. In this way, the wiring harness is plugged in outside the battery box, and the operating space is large, which reduces the difficulty of installation and improves work efficiency. The integrated bracket, the battery management system and the low-voltage wiring harness are integrated into a first integrated body, and the first integrated body can be fixedly installed in the battery box through the third connecting part of the integrated bracket. In this way, the assembly of the first integrated body can be realized outside the battery box, so that the installation of the battery management system and the low-voltage wiring harness has a larger operating space. Only the first integrated body needs to be installed in the battery box, which reduces the installation process in the battery box and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 An axonometric view of an integrated bracket provided in an embodiment of the present application; Figure 2 for Figure 1 Rear view of the integrated stand shown; Figure 3 for Figure 1 A schematic diagram of a partial structure of the integrated bracket shown; Figure 4 for Figure 1 A schematic diagram of a partial structure of the integrated bracket shown; Figure 5 A schematic diagram of a battery management system connection terminal provided in an embodiment of the present application; Figure 6 A schematic diagram of a wiring harness fixing assembly provided in an embodiment of the present application; Figure 7 A schematic diagram of the assembly of the integrated bracket and the battery management system provided in an embodiment of the present application; Figure 8 A schematic diagram of a first integrated body provided in an embodiment of the present application; Fig. 9 Another schematic diagram of the first integrated body provided in an embodiment of the present application; Fig.10 A top view of the assembly of the first integrated body and the battery box provided in the embodiment of the present application; Fig.11 An axonometric diagram of the assembly of a plurality of first assemblies and a battery box provided in an embodiment of the present application; Fig.12 An axonometric view of an integrated base provided in an embodiment of the present application; Fig.13 A schematic diagram of the assembly of the integrated base, insulating column and mounting parts provided in the embodiment of the present application; Fig.14 A schematic diagram of assembling the integrated base and the electrical components integrated on the integrated base provided in an embodiment of the present application; Fig.15 for Fig.14 Schematic diagram of the wiring harness; Fig.16 A schematic diagram of an integrated assembly provided in an embodiment of the present application; Fig.17 An axonometric view of the assembly of the integrated assembly and the battery box provided in an embodiment of the present application.

[0025] Description of reference numerals: 100-integrated bracket, 101-bracket plate, 110-first connecting portion, 111-first side connecting portion, 112-first lower connecting portion, 120-second connecting portion, 121-first connecting hole, 130-third connecting portion, 131-fixing hole, 140-reinforcement rib, 150-welding point, 160-bending plate, 170-allowing space, 180-support portion; 200-battery management system, 210-connection end, 220-plug end, 2001-master control module, 2002-slave control module; 300- low voltage wire harness, 301- first low voltage wire, 310- trunk, 320- branch; 400-battery box, 410-module; 500-wire harness fixing assembly, 510-cable tie body, 520-buckle; 600-integrated base, 610-second connecting hole, 620-mounting hole; 700-high voltage cut-off unit, 701-insulating column, 702-high precision current sensor, 703-main positive relay, 704-main negative relay, 705-low precision current sensor, 706-pre-charging resistor, 707-heating fuse, 708-high voltage copper busbar, 709-low voltage connector, 710-high voltage connector, 711-positioning bolt, 712-connector mounting plate; 801-second low voltage line, 802-high voltage line. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0028] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0029] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0030] The "parallel" and "perpendicular" involved in this application are "substantially parallel" and "substantially perpendicular" in actual operation. "Substantially parallel" can be understood as parallel with a certain error, and similarly, "substantially perpendicular" can be understood as perpendicular with a certain error.

[0031] The existing installation method of the BMS (Battery Management System) for automobiles is: after the battery module is installed in the battery box, the BMS bracket, the wiring harness bracket, and the BMS are installed in the battery box in sequence, and then the wiring harness is fixed and the plug-in is connected. The above processes are all performed in the battery box. Due to the small operating space in the battery box, the installation is difficult and the installation efficiency of the BMS is low.

[0032] According to the above installation method, it can be seen that the wiring harness needs to be plugged in the battery box after the BMS is installed, so that the operation space for the wiring harness is smaller. Among them, the BMS needs to connect the high-voltage wiring harness and the low-voltage wiring harness. The high-voltage wiring harness is used to connect the main control module and has higher size standards and connection standards. The low-voltage wiring harness is used to connect the slave control module, and the size tolerance is wider, and most of them are manually connected.

[0033] Therefore, in the process of plugging in the low-voltage wiring harness, it is necessary to first connect the control module, then position it through the wiring harness bracket or the box hole, and then plug it into the plug-in end of the BMS. The connection link of the low-voltage wiring harness is too long, which requires manual adjustment during the connection process, such as installing staples, bending the wiring harness, and adjusting the direction of the branch line. This makes the connection process of the low-voltage wiring harness more complicated, making the installation efficiency of the BMS low.

[0034] Similarly, after installing the BMS, it is also necessary to install a high-voltage cut-off unit formed by some other electrical components such as relays and sensors into the battery box. Multiple electrical components need to be installed and connected in sequence within a limited space, which makes the installation process of the high-voltage cut-off unit more difficult and the installation efficiency is low.

[0035] In order to solve the above technical problems, the present application provides an integrated device and a battery management system to improve the installation efficiency of the battery management system and the high-voltage cut-off unit.

[0036] like Figure 1-Figure 11 As shown, the integrated device provided in the embodiment of the present application includes an integrated bracket 100, which is used to integrate the battery management system 200 and the low-voltage harness 300 to form a first integrated body, so that after the battery management system 200 and the low-voltage harness 300 are integrated with the integrated bracket 100 into the first integrated body, they can be installed in the battery box 400 through the integrated bracket 100. In this way, the battery management system 200, the low-voltage harness 300 and the integrated bracket 100 are pre-installed outside the battery box 400, so that the pre-installation process has a larger operating space, reduces the process of installing the battery management system 200 in the battery box 400, and improves the installation efficiency of the battery management system 200.

[0037] like Figure 1 , Figure 7 , Figure 8 and Fig.11 As shown, the integrated bracket 100 includes a bracket plate 101, and a first connection portion 110, a second connection portion 120 and a third connection portion 130 all connected to the bracket plate 101. The first connection portion 110 is used to be fixedly connected to the battery management system 200, so that the first connection portion 110 positions and fixes the battery management system 200; the second connection portion 120 is used to be fixedly connected to the low-voltage wire harness 300 through the wire harness fixing assembly 500. After the battery management system 200 is installed on the integrated bracket 100, the low-voltage wire harness 300 is bundled as a whole through the wire harness fixing assembly 500 and fixedly connected to the second connection portion 120, and then the low-voltage wire harness 300 and the battery management system 200 are connected to complete the pre-installation of the first integrated body, and the low-voltage wire harness is fixedly connected to the outside of the battery box 400. The docking of the low-voltage wiring harness 300 and the battery management system 200 has a large operating space. In this way, part of the connection of the low-voltage wiring harness 300 is completed outside the battery box 400. After the first integrated body is installed into the battery box 400, only the low-voltage wiring harness 300 connection module needs to be connected, which reduces the installation difficulty and improves the work efficiency. The third connecting part 130 is used for fixed connection with the battery box 400. In this way, the first integrated body is installed in the battery box 400 through the third connecting part 130 of the integrated bracket 100, which reduces the installation process of the battery management system 200 in the battery box and improves the installation efficiency.

[0038] like Figure 1 As shown, since the integrated bracket 100 is used for installation in a battery box 400 with high space utilization and dense parts arrangement, the integrated bracket 100 is sheet metal and is formed by stamping and bending, which can reduce the space occupied by the integrated bracket 100 to improve the space utilization of the battery box 400.

[0039] In order to improve the strength of the integrated bracket 100, a reinforcing rib 140 is provided on the bracket plate 101. Figure 2 As shown, the reinforcing rib 140 is an “X”-shaped profile pattern, which strengthens the strength of the bracket plate 101 and improves the supporting strength of the integrated bracket 100 .

[0040] In some other embodiments, the reinforcing rib 140 may also be in a "cross" shape, or a striped pattern covering the entire support plate 101, which is not limited in the embodiments of the present application.

[0041] like Figure 1 and Figure 4As shown, the first connection portion 110 includes a first side connection portion 111 and a first lower connection portion 112. The first side connection portion 111 is used to be fixedly connected to the side of the battery management system 200, and the first lower connection portion 112 is used to be fixedly connected to the bottom of the battery management system 200. In this way, the battery management system 200 is positioned and fixed in both the horizontal and vertical directions by the first side connection portion 111 and the first lower connection portion 112, thereby enhancing the connection strength between the first connection portion 110 and the battery management system 200 and ensuring the stability of the connection between the integrated bracket 100 and the battery management system 200.

[0042] In order to ensure a stable connection to the battery management system 200, as Figure 1 As shown, the first lower connecting portion 112 is located at the bottom of the bracket plate 101, and the first side connecting portion 111 is located at the top of the bracket plate 101. In this way, the fixed positions of the first lower connecting portion 112 and the first side connecting portion 111 and the battery management system 200 are not only distributed on the bottom and side surfaces of the battery management system 200, but also distributed in the vertical direction along the height, thereby realizing multi-point distribution and fixation of the first connecting portion 110 and the battery management system 200, further ensuring the stability of the connection between the integrated bracket 100 and the battery management system 200.

[0043] In order to further support the battery management system 200, as Figure 1 As shown, the integrated bracket 100 also includes a support portion 180 connected to the bracket plate 101, and the support portion 180 is located at the bottom of the bracket plate 101, and is used to support the battery management system 200, so as to increase the supporting area of ​​the integrated bracket 100 for the battery management system 200, and further improve the stability of the connection between the integrated bracket 100 and the battery management system 200; in a further embodiment, in the first connection portion 110, the first lower connection portion 112 and the first side connection portion 111 are both distributed at both ends of the support portion 180, which increases the connection points between the first connection portion 110 and the battery management system 200, and further disperses the connection positions of the first connection portion 110 and the battery management system 200, further enhancing the stability of the connection between the integrated bracket 100 and the battery management system 200.

[0044] It should be noted that the integrated bracket 100 provided in the embodiment of the present application, due to its sheet metal material, the first connection part 110 can be bent and formed with the bracket plate 101, and can be fine-tuned during the connection between the first connection part 110 and the battery management system 200, so that the first connection part 110 can be more adapted to the battery management system 200, thereby increasing the connection strength between the first connection part 110 and the battery management system 200.

[0045] In some embodiments, the connection end 210 of the battery management system 200 is snap-fitted with the first connection portion 110. Figure 4 and Figure 5 As shown, the first connection part 110 is a latch buckle, a through hole is provided on the latch buckle, and the connection end 210 has a slot for the latch buckle to be inserted into, and a protrusion is provided in the slot, one side of the protrusion is an inclined surface, and the other side is a vertical surface. During the process of the latch buckle being engaged with the slot, the latch buckle moves along the inclined surface of the protrusion, and the through hole and the vertical surface of the protrusion are engaged, so that the first connection part 110 and the connection end 210 are fixedly connected, so that the engaging process of the first connection part 110 and the connection end 210 is convenient and simple to operate, thereby improving the installation efficiency of the integrated bracket 100 and the battery management system 200.

[0046] In some other embodiments, the connection end 210 of the battery management system 200 is provided with a threaded hole, and the first connection part 110 is provided with a through hole, so that the connection end 210 and the first connection part 110 are connected by threaded fasteners, thereby improving the connection strength between the integrated bracket 100 and the battery management system 200.

[0047] like Figure 7 As shown, the battery management system 200 and the integrated bracket 100 are pre-installed by fixedly connecting the first connecting portion 110 to the connecting end 210 .

[0048] After the battery management system 200 and the integrated bracket 100 are installed, the low voltage harness 300 is connected, such as Figure 6 As shown, the low-voltage wiring harness 300 includes at least two first low-voltage wires 301, and the at least two first low-voltage wires 301 are fastened by cable ties so that the at least two first low-voltage wires 301 can be bundled into a low-voltage wiring harness 300, which facilitates the low-voltage wiring harness 300 to be fixed to the second connecting part 120 of the integrated bracket 100 through the wiring harness fixing assembly 500, wherein the wiring harness fixing assembly 500 includes a cable tie.

[0049] In order to facilitate the connection between the harness fixing assembly 500 and the second connecting portion 120, the second connecting portion 120 includes at least one first connecting hole 121, and the cable tie includes a cable tie body 510 and a buckle 520 fixed to one end of the cable tie body 510. The buckle 520 can pass through the first connecting hole 121 and be engaged with the first connecting hole 121, so that the harness fixing assembly 500 can fix the low-voltage harness 300 to the second connecting portion 120. For example, Figure 6 As shown, the second connection part 120 includes three first connection holes 121. The bundling belt body 510 can be tied at the corresponding positions of the low-voltage wiring harness 300 and the first connection holes 121, and is clamped with the first connection holes 121 through the buckle 520. The low-voltage wiring harness 300 and the second connection part 120 are fixed by multiple fixing points, thereby improving the stability of the connection between the low-voltage wiring harness 300 and the integrated bracket 100.

[0050] In actual situations, the first end of the cable tie body 510 close to the buckle 520 has a through hole for the second end of the cable tie body 510 away from the buckle 520 to pass through, and the second end of the cable tie body 510 can be fixedly matched with the first end to form a ring shape, which is used to tighten the low-voltage wiring harness 300 to ensure that the low-voltage wiring harness 300 is stably connected to the second connecting part 120.

[0051] like Figure 6-Figure 8 As shown, the battery management system 200 has a plug-in terminal 220 connected to the low-voltage wiring harness 300. After the low-voltage wiring harness 300 is fixed to the second connecting part 120, the low-voltage wires 301 in the low-voltage wiring harness 300 are respectively connected to the corresponding plug-in terminals 220, thereby realizing the pre-installation of the integrated bracket 100, the battery management system 200 and the low-voltage wiring harness 300.

[0052] The space utilization rate in the battery box 400 is high. In the existing connection process of the low-voltage wire harness 300, due to the flexibility of the low-voltage wire harness 300 itself, the layout space of the low-voltage wire harness 300 is easily ignored, resulting in a smaller space for placing the low-voltage wire harness 300 in the battery box 400, so that the connection process of the low-voltage wire harness 300 may be interfered with and blocked by other parts. Therefore, Figure 8 As shown, the bracket plate 101 is located on a side of the battery management system 200 away from the plug-in end 220, the axial direction of the first connecting hole 121 is perpendicular to the bracket plate 101, or the axial direction of the first connecting hole 121 has an acute angle or an obtuse angle with the bracket plate 101. In order to facilitate the cooperation between the second connecting portion 120 and the wiring harness fixing assembly 500, the axial direction of the first connecting hole 121 can be selected to be perpendicular to the bracket plate 101. In this way, the low-voltage wiring harness 300 is fixed inside the integrated bracket 100, providing a storage space for the low-voltage wiring harness 300. At the same time, it is convenient for the low-voltage wire 301 to dock with the corresponding plug-in end 220, thereby improving the docking efficiency of the low-voltage wiring harness 300 and the battery management system 200.

[0053] In order to further improve the convenience of connecting the low voltage harness 300, Figure 7 As shown, the second connecting part 120 is located at the top of the bracket plate 101, and there is an accommodating space for accommodating the low-voltage wire harness 300 between the second connecting part 120 and the battery management system 200, so that after the low-voltage wire harness 300 is connected to the second connecting part 120, the low-voltage wire 301 can be more conveniently connected to the corresponding plug-in terminal 220, and at the same time, the integrated bracket 100, the battery management system 200 and the low-voltage wire harness 300 can be integrated into a more compact integrated body, thereby improving the convenience of connecting the integrated body with the battery box 400 and further improving the installation efficiency.

[0054] like Figure 7-Figure 8 As shown, the battery management system 200 has at least two plug-in terminals 220, and the at least two plug-in terminals 220 are distributed in sequence along a first direction. The first direction is as follows: Figure 7-Figure 8 As shown along the length direction of the second connecting part 120, the low-voltage wiring harness 300 can be connected to the first connecting holes 121 in sequence along the first direction to pre-arrange the low-voltage wiring harness 300; in the second connecting part 120, there are at least two first connecting holes 121, and at least two first connecting holes 121 are distributed in sequence along the first direction. In this way, after the low-voltage wiring harness 300 is connected to the second connecting part 120, the low-voltage wire 301 can be connected to the corresponding plug-in terminal 220 in sequence along the first direction, shortening the connection length of the low-voltage wire 301 and improving the connection efficiency between the low-voltage wiring harness 300 and the battery management system 200.

[0055] like Figure 8 As shown, after the battery management system 200 and the integrated bracket 100 are installed, the low-voltage wiring harness 300 is fixed to the second connecting part 120 through the wiring harness fixing assembly 500, and the low-voltage wiring harness 300 and the battery management system 200 are connected, thereby realizing the pre-installation of the integrated bracket 100, the battery management system 200 and the low-voltage wiring harness 300.

[0056] The integrated bracket 100 is fixedly connected to the battery box 400 via the third connecting portion 130 , so that the integrated bracket 100 , the battery management system 200 and the low-voltage wiring harness 300 are synchronously fixed inside the battery box 400 .

[0057] like Figure 1 and Fig.10 As shown, the third connecting portion 130 is provided with a fixing hole 131, and a threaded hole matching the fixing hole 131 is provided inside the battery case 400. After the fixing hole 131 is positioned so as to correspond to the hole position inside the battery case 400, it is fixed by threaded fasteners to achieve a fixed connection between the integrated bracket 100 and the battery case 400.

[0058] like Figure 3 As shown, the third connection part 130 is vertically connected to the bracket plate 101, and the integrated bracket 100 also includes a bending plate 160, and the bending plate 160 is perpendicular to the bracket plate 101 and the third connection part 130, and the bending plate 160 is fixedly connected to the bracket plate 101 and the third connection part 130, so that the bending plate 160, the bracket plate 101 and the third connection part 130 form a triangular structure, thereby increasing the connection strength of the integrated bracket 100.

[0059] In some other embodiments, a welding point 150 is welded at the connection between the bending plate 160 and the third connecting portion 130 to further enhance the connection strength of the integrated bracket 100 .

[0060] like Figure 8As shown, there is a clearance space 170 for using tools between the bending plate 160 and the battery management system 200, so that the staff can fix the integrated bracket 100 and the battery box 400 with threaded fasteners in the clearance space 170 to avoid interference in the installation process and further improve the installation efficiency.

[0061] In order to improve the connection stability between the integrated bracket 100 and the battery box 400, as Figure 1 As shown, there are two third connecting parts 130, and the two third connecting parts 130 are located at the two ends of the bottom of the bracket plate 101. In this way, the two ends of the integrated bracket 100 are fixed to the battery box 400, which improves the connection stability between the integrated bracket 100 and the battery box 400; there are two bending plates 160, and the two bending plates 160 are symmetrically distributed so that both ends of the integrated bracket 100 meet the strength requirements.

[0062] like Figure 1 and Figure 8 As shown, the third connection part 130 is arranged flush with one end of the bracket plate 101 and the first connection part 110 is arranged flush with the end of the bracket plate 101. In this way, a layout space for the low-voltage wiring harness 300 can be provided, so that the low-voltage wiring harness 300 and the third connection part 130 are staggered and distributed, avoiding interference between the low-voltage wiring harness 300 and the battery box 400 during the installation process, thereby improving the convenience of installation.

[0063] In order to improve the installation efficiency of the high voltage cut-off unit 700, as Figure 12-Figure 17 As shown, the integrated device provided in the embodiment of the present application further includes an integrated base 600, and the integrated base 600 is provided with a mounting structure for mounting the high-voltage cut-off unit 700, so as to integrate the high-voltage cut-off unit 700 and form a second integrated body. In this way, the high-voltage cut-off unit 700 is mounted on the integrated base 600 outside the battery box 400, so that it can be operated in a large space, which improves the convenience of the installation and connection process of the high-voltage cut-off unit 700 and improves the installation efficiency of the high-voltage cut-off unit 700.

[0064] like Fig.12 As shown, in order to adapt to the smaller installation space in the battery box 400, the integrated base 600 is sheet metal, which reduces the installation space of the integrated base 600. The four corners of the integrated base 600 are sheet metal bent to improve the strength of the integrated base 600, ensure the stability of the high-voltage cut-off unit 700 during installation on the integrated base 600, and also ensure the stability of the second integrated body during operation.

[0065] like Figure 12-13As shown, the high-voltage cut-off unit 700 includes a high-precision current sensor 702 for collecting current values, a low-precision current sensor 705 for assisting in collecting current values, a main positive relay 703 and a main negative relay 704 that can protect electrical components by automatically closing and opening, a pre-charge resistor 706 for storing capacitors to prevent instantaneous large current shocks from damaging electrical components, a heating fuse 707 for protecting the heating circuit, a high-voltage copper bus 708 for current passing between electrical components, and an insulating column 701 that can achieve insulation between the current and the integrated base 600.

[0066] The specific connection relationship between the above-mentioned electrical components is a commonly used connection in this field and will not be repeated here.

[0067] In order to ensure the connection strength of each electrical component in the high voltage cut-off unit 700, such as Figure 12-13 As shown, the installation position is the second connecting hole 610. In this way, before installing each electrical component, the positioning bolt 711 is fixed to the integrated base 600 through the second connecting hole 610, so that each electrical component can be pre-positioned by the positioning bolt 711 during the installation process, thereby improving the installation efficiency and convenience of the high-voltage cut-off unit 700; the integrated base 600 is also provided with mounting holes 620 for connecting to the battery box 400 at the four corners, so that the high-voltage cut-off unit 700 and the integrated base 600 can be installed in the battery box 400 through the mounting holes 620 after the second integrated body is integrated, thereby ensuring the installation strength of the second integrated body.

[0068] like Figure 15-16 As shown, the high-voltage cut-off unit 700 is connected to the battery management system 200 through the second low-voltage line 801 and the high-voltage line 802. The high-voltage cut-off unit 700 also includes a low-voltage connector 709 and a high-voltage connector 710, wherein the low-voltage connector 709 is used to plug with the second low-voltage line 801, and the high-voltage connector 710 is used to plug with the high-voltage line 802, so that the first assembly and the second assembly are integrated and installed in the battery box 400. In this way, the pre-installation of the battery management system 200, the low-voltage wiring harness 300, the integrated base 600, and the high-voltage cut-off unit 700 is realized outside the battery box 400, so that only the first assembly and the second assembly need to be installed in the battery box 400, reducing the operation process and improving the overall installation efficiency.

[0069] In the embodiments of the present application, Fig.16As shown, the battery management system 200 includes a main control module 2001 and a slave control module 2002, wherein the low voltage harness 300 is connected to the slave control module 2002 through the main control module 2001, and the slave control module 2002 and the module 410 are respectively connected via the first low voltage line 301 to realize the connection between the module 410 and the battery management system 200; the main control module 2001 is correspondingly connected to the high voltage cut-off unit 700 via the second low voltage line 801 and the high voltage line 802 to realize the connection between the battery management system 200 and the high voltage cut-off unit 700. In this way, the connection between the first assembly and the second assembly is realized, so that the first assembly and the second assembly can be installed into the battery box 400 synchronously.

[0070] In the integrated device provided in the embodiment of the present application, the first integrated body is installed first, firstly connected to the connection end 210 of the battery management system 200 through the first connection part 110 of the integrated bracket 100, and then the first low-voltage line 301 is bundled into a low-voltage wire harness 300 through the wire harness fixing assembly 500 and is engaged with the corresponding first connection hole 121 in the second connection part 120, and then the first low-voltage line 301 is docked with the corresponding plug-in end 220 of the battery management system 200 to realize the pre-installation of the integrated bracket 100, the battery management system 200, and the low-voltage wire harness 300 outside the battery box 400, and the integrated bracket 100, the battery management system 200, and the low-voltage wire harness 300 are integrated into the first integrated body, and then the second integrated body is installed, and the high-voltage cut-off unit 700 is installed in sequence through the second connection hole 610 on the integrated base 600 The electrical components in the battery box 400 are connected, and the electrical components are connected to form a second integration body, and the battery management system 200 and the high-voltage cut-off unit 700 are connected through the second low-voltage line 801 and the high-voltage line 802 to realize the connection between the first integration body and the second integration body, and then the third connecting part 130 of the integrated bracket 100 is fixedly connected to the battery box 400 and the mounting hole 620 of the integrated base 600 is fixedly connected to the battery box 400, so that the first integration body and the second integration body are simultaneously installed into the battery box 400. In this way, only one installation process is required in the battery box 400, which reduces the difficulty of installation. Then, the pre-connected low-voltage wiring harness 300 is connected to the module, so that the low-voltage wiring harness 300 has a clear wiring harness direction reference, which improves the convenience of connection and improves the overall installation efficiency of the battery management system 200 and the high-voltage cut-off unit 700.

[0071] like Fig.11 and Fig.17 As shown, an embodiment of the present application further provides a battery pack, including: a battery case 400 and an integrated assembly, wherein the integrated assembly is assembled outside the battery case 400 and installed inside the battery case 400.

[0072] In some embodiments, Fig.11As shown, the integrated assembly includes: a battery management system 200, a low-voltage wiring harness 300 and an integrated bracket 100 as in the above-mentioned integrated device. In this way, the integrated assembly includes at least one first integrated body and a low-voltage wiring harness 300 corresponding to the first integrated body. The installation is achieved through the integrated assembly and the battery box 400, making the installation more convenient.

[0073] In some other embodiments, such as Fig.17 As shown, the integrated assembly includes: a battery management system 200, a low-voltage wiring harness 300, a second low-voltage line 801, a high-voltage line 802, a high-voltage cut-off unit 700, and an integrated bracket 100 and an integrated base 600 as in the above-mentioned integrated device. In this way, the integrated assembly includes at least a first integrated body, a second integrated body, a low-voltage wiring harness 300, a second low-voltage line 801 and a high-voltage line 802, and the installation is achieved through the integrated assembly and the battery box 400, making the installation more convenient.

[0074] Since the above-mentioned integrated device has the above-mentioned technical effects, and the above-mentioned battery pack includes the above-mentioned integrated device, the above-mentioned battery pack also has the corresponding technical effects, which will not be repeated here.

[0075] In some embodiments, in the first integrated body, Figure 8 As shown, there is one integrated bracket 100 , one battery management system 200 , and the low-voltage wiring harness 300 includes a plurality of first low-voltage wires 301 , which are connected to the plug-in end 220 of the battery management system 200 .

[0076] In the first integrated body of some other embodiments, there are at least two integrated brackets 100, at least two battery management systems 200, at least two integrated brackets 100 are distributed up and down in the vertical direction, and at least two battery management systems 200 are distributed up and down in the vertical direction; the low-voltage wiring harness 300 includes a trunk 310 and at least two branches 320, each branch 320 is connected to the trunk 310, and the branches 320 correspond to the battery management system 200 one by one; any two branches 320 are distributed in sequence in the vertical direction; among all the integrated brackets 100 distributed up and down in the vertical direction, the integrated bracket 100 located at the top is the first integrated bracket, and all the integrated brackets 100 located on the bottom side of the first integrated bracket are the second integrated brackets; the second connecting portion 120 of the first integrated bracket is connected to the trunk 310; in the vertical direction, the second connecting portion 120 of each second integrated bracket corresponds to a branch 320; and the second connecting portion 120 of the second integrated bracket is connected to the corresponding branch 320.

[0077] For example, Fig. 9As shown, an integrated body includes two integrated brackets 100 and two battery management systems 200. The two integrated bodies are distributed vertically up and down. The trunk 310 of the low-voltage wiring harness 300 is connected to the second connecting portion 120 of the first integrated bracket located above. The trunk 310 is divided into two branches 320, one of which is connected to the second connecting portion 120 of the second integrated bracket located below, and the other branch 320 is located at the bottom of the second integrated bracket, so that the low-voltage wiring harness 300 is arranged circumferentially around the battery management system 200 to avoid interference between the low-voltage wiring harness 300 and other parts during the connection process, while making the entire integrated body more compact.

[0078] like Fig.11 As shown, according to actual needs, first assemblies of different specifications can be installed in the battery box 400, so that the assemblies of different specifications can be matched and connected with each other, thereby improving the practicality of the battery pack.

[0079] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated device, characterized in that: It comprises an integrated bracket (100), the integrated bracket (100) being used to integrate a battery management system (200) and a low-voltage wiring harness (300) to form a first integrated body, so that the first integrated body can be installed on a battery box (400); The integrated bracket (100) comprises: a bracket plate (101), a first connecting portion (110), a second connecting portion (120), and a third connecting portion (130) all connected to the bracket plate (101); The first connection portion (110) is used for fixedly connecting to the battery management system (200), the second connection portion (120) is used for fixedly connecting to the low-voltage wire harness (300) via a wire harness fixing assembly (500), and the third connection portion (130) is used for fixedly connecting to the battery box (400).

2. The integrated device according to claim 1, characterized in that: The low-voltage wire harness (300) comprises at least two first low-voltage wires (301), the at least two first low-voltage wires (301) are fastened by a cable tie, and the wire harness fixing assembly (500) comprises the cable tie.

3. The integrated device according to claim 2, characterized in that: The second connecting portion (120) comprises at least one first connecting hole (121); The cable tie comprises a cable tie body (510) and a buckle (520) fixed to one end of the cable tie body (510); the buckle (520) can pass through the first connection hole (121) and be buckled with the first connection hole (121).

4. The integrated device according to claim 3, characterized in that: The battery management system (200) has a plug-in terminal (220) connected to the low-voltage wiring harness (300), the bracket plate (101) is located on a side of the battery management system (200) away from the plug-in terminal (220), and the axial direction of the first connection hole (121) forms an angle with the bracket plate (101); And / or, the second connection portion (120) is located on the top of the bracket plate (101).

5. The integrated device according to claim 4, characterized in that: There are at least two plug ends (220), and at least two of the plug ends (220) are distributed in sequence along the first direction; there are at least two first connection holes (121), and at least two of the first connection holes (121) are distributed in sequence along the first direction.

6. The integrated device according to claim 1, characterized in that: The first connection portion (110) comprises a first side connection portion (111) and a first lower connection portion (112); the first side connection portion (111) is used to be fixedly connected to a side surface of the battery management system (200); and the first lower connection portion (112) is used to be fixedly connected to a bottom surface of the battery management system (200).

7. The integrated device according to claim 6, characterized in that: The first lower connection portion (112) is located at the bottom of the support plate (101), and the first side connection portion (111) is located at the top of the support plate (101).

8. The integrated device according to claim 7, characterized in that: The integrated bracket (100) further comprises a support portion (180) connected to the bracket plate (101), the support portion (180) being used to support the battery management system (200); wherein the first connection portion (110) is distributed at both ends of the support portion (180).

9. The integrated device according to claim 1, characterized in that: The third connection portion (130) is vertically connected to the support plate (101); The integrated bracket (100) further comprises a bending plate (160), wherein the bending plate (160) is perpendicular to the bracket plate (101) and the third connecting portion (130), and the bending plate (160) is fixedly connected to the bracket plate (101) and the third connecting portion (130).

10. The integrated device according to claim 9, characterized in that There are two third connection parts (130), and the two third connection parts (130) are located at two ends of the bottom of the bracket plate (101); There are two bending plates (160), and the two bending plates (160) are symmetrically distributed.

11. The integrated device according to claim 1, characterized in that: An end of the third connection portion (130) away from the support plate (101) and an end of the first connection portion (110) away from the support plate (101) are arranged flush with each other.

12. The integrated device according to claim 1, characterized in that The first connection portion (110) is snap-connected with a connection end (210) of the battery management system (200); Alternatively, the first connection portion (110) is connected to the connection end (210) of the battery management system (200) via a threaded fastener.

13. The integrated device according to any one of claims 1 to 12, characterized in that: The integrated device further comprises an integrated base (600), wherein the integrated base (600) is provided with a mounting structure for mounting a high-voltage cut-off unit (700), so as to integrate the high-voltage cut-off unit (700) and form a second integrated body; The high-voltage cut-off unit (700) is connected to the battery management system (200) via a second low-voltage line (801) and a high-voltage line (802); the high-voltage cut-off unit (700) comprises a low-voltage plug connector (709) and a high-voltage plug connector (710); the low-voltage plug connector (709) is used for plugging with the second low-voltage line (801); and the high-voltage plug connector (710) is used for plugging with the high-voltage line (802), so that the first integrated body and the second integrated body are integrated and installed in the battery box (400).

14. The integrated device according to claim 13, characterized in that The mounting structure is a second connecting hole (610); The integrated base (600) is also provided with a mounting hole (620) for connecting with the battery box (400).

15. A battery pack, characterized in that: include: A battery box (400) and an integrated assembly, wherein the integrated assembly is assembled outside the battery box (400) and installed inside the battery box (400); The integrated assembly comprises: a battery management system (200), a low-voltage wiring harness (300), and an integrated device according to any one of claims 1 to 12; Alternatively, the integrated assembly comprises: a battery management system (200), a low-voltage wiring harness (300), a second low-voltage line (801), a high-voltage line (802), a high-voltage disconnection unit (700), and the integrated device according to claim 13 or 14.

16. The battery pack according to claim 15, characterized in that: In the first integrated body, there are at least two integrated brackets (100), there are at least two battery management systems (200), at least two integrated brackets (100) are distributed vertically up and down, and at least two battery management systems (200) are distributed vertically up and down; The low-voltage wiring harness (300) comprises a trunk (310) and at least two branches (320), each of the branches (320) being connected to the trunk (310), and the branches (320) corresponding to the battery management system (200) one by one; any two of the branches (320) are distributed in sequence along the vertical direction; Among all the integrated brackets (100) distributed vertically up and down, the integrated bracket (100) located at the top is a first integrated bracket, and all the integrated brackets (100) located at the bottom side of the first integrated bracket are second integrated brackets; The second connection portion (120) of the first integrated bracket is connected to the trunk (310); In the vertical direction, the second connection portion (120) of each second integrated bracket corresponds to the branch (320); and the second connection portion (120) of the second integrated bracket is connected to the branch (320) corresponding thereto.

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