Slave control module, battery management system and battery pack

Abstract

The utility model provides a slave control module, a battery management system and a battery pack, the slave control module comprises a shell, a first assembly lug, a second assembly lug and a cover plate structure, and an accommodating groove of the shell is provided with a first notch; each first assembling lug is provided with a first assembling hole, and each second assembling lug is provided with a second assembling hole. The cover plate structure covers the first notch, part of the third assembling holes in the same side of the cover plate structure corresponds to the first assembling holes, and the other third assembling holes in the same side correspond to the second assembling holes; the shell is provided with a first buckle protrusion, and a fourth assembly hole in the cover plate structure is opposite to the first buckle protrusion. According to the utility model, the problems that the production cost of the battery pack is increased and the economy of the battery pack is not facilitated due to the fact that the slave control board in the prior art needs to be independently designed in an adaptive manner according to different mounting requirements are solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy technology, and in particular to a slave control module, a battery management system and a battery pack. Background Art

[0002] A battery pack usually includes multiple battery modules, each of which includes multiple battery cells. When a battery cell fails, such as overtemperature, overvoltage or undervoltage, thermal runaway of the battery pack may occur, leading to accidents such as combustion, explosion, and personal injury. Therefore, it is necessary to monitor the voltage of each battery cell, and the voltage monitoring of the battery cell needs to be achieved through a voltage sampling line. Therefore, the battery pack has a large number of voltage sampling lines. Based on this, the prior art provides a battery management system BMS (Battery Management System) in the battery pack to achieve voltage monitoring of each battery cell. The battery management system usually needs to be configured in a structural form including a main control board (BMS main board) and multiple slave control boards (BMS slave boards). The multiple slave control boards are electrically connected to the main control board, and the multiple slave control boards are arranged one-to-one with the multiple battery modules, and each slave control board is electrically connected to the multiple battery cells in each battery module through multiple voltage sampling lines.

[0003] However, due to the limited assembly space of the battery pack and the different materials of the boxes of different battery packs, the slave control board in the existing technology needs to be individually adapted according to different installation requirements, which increases the production cost of the battery pack and is not conducive to the economy of the battery pack. Utility Model Content

[0004] The main purpose of the present utility model is to provide a slave control module, a battery management system and a battery pack, so as to solve the problem in the prior art that the slave control board needs to be individually adapted according to different installation requirements, which increases the production cost of the battery pack and is not conducive to the economy of the battery pack.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a slave control module of a battery management system is provided, including a shell, a first assembly lug, a second assembly lug and a cover plate structure, the shell has a receiving groove, the receiving groove is used to accommodate a voltage monitoring element, and the receiving groove has a first notch; the first assembly lugs are N, and the N first assembly lugs are symmetrically distributed on the outer surface of the shell on both sides of the first notch, and each first assembly lug has a first assembly hole; the second assembly lugs are M, and the M second assembly lugs are symmetrically distributed on the outer surface of the shell at the receiving On the outer surfaces of both sides of the bottom of the groove, each second assembly lug has a second assembly hole; wherein, N / 2 first assembly lugs and M / 2 second assembly lugs on the same side are staggered; the cover structure is covered at the first slot, and K third assembly holes are opened on the cover structure, and the K third assembly holes are symmetrically distributed on both sides of the cover structure, and part of the K / 2 third assembly holes on the same side are arranged corresponding to the first assembly holes, and the remaining third assembly holes on the same side are arranged corresponding to the second assembly holes; wherein, a first card is provided on the surface of the side of the shell away from the first slot. The cover structure is provided with a buckle protrusion, and a fourth assembly hole is further provided on the cover structure, and the fourth assembly hole is arranged opposite to the first buckle protrusion; the first buckle protrusion is used to cooperate with the first limiting hole on the box body of the battery pack, or the first buckle protrusion is used to cooperate with the fourth assembly hole on the matching cover structure of the adjacent slave control module; wherein, when a single slave control module is installed on the box body, the first buckle protrusion is used to cooperate with the first limiting hole on the box body of the battery pack, so as to positively position the single slave control module on the box body; when multiple slave control modules are stacked and ... The connection method between the slave control module at the head and the box body is the same as the connection method of installing a single slave control module on the box body. The connection method of the second slave control module located after the head to the last slave control module at the tail is that the first snap protrusion is used to cooperate with the fourth assembly hole on the cover structure of the adjacent previous slave control module, so as to be used to stack and position multiple slave control modules in the forward direction on the box body; or, the third assembly hole and the first assembly hole arranged opposite to each other on the same side are sequentially passed through by the positioning column on the box body, so as to reversely position and install a single slave control module on the box body.

[0006] In an exemplary embodiment, the number N of the first assembly lugs, the number M of the second assembly lugs, and the number K of the third assembly holes satisfy: N<M=K.

[0007] In an exemplary embodiment, the surface of the first assembly lug facing away from the second assembly lug is flush with the plane where the first notch is located; and / or the surface of the second assembly lug facing away from the first assembly lug is flush with the surface of the housing facing away from the first notch.

[0008] In an exemplary embodiment, the cover structure is detachably connected to the housing.

[0009] In an exemplary embodiment, hook structures are provided on both sides of the cover structure, and slot structures are provided on both walls of the accommodating slot. The hook structures on the same side are engaged with the slot structures on the same side.

[0010] In an exemplary embodiment, the hook structure is located outside the fourth assembly hole.

[0011] In an exemplary embodiment, both sides of the cover structure have notches, and the hook structure is movably disposed in the notches.

[0012] In an exemplary embodiment, the hook structure includes a fixed arm, a transition arc segment and a movable arm, wherein the first end of the fixed arm is connected to the side wall surface of the notch; the first end of the transition arc segment is connected to the second end of the fixed arm, and the transition arc segment extends in a curved shape; the first end of the movable arm is connected to the second end of the transition arc segment, the second end of the movable arm forms a free end, and there is a movable gap between the second end of the movable arm and the fixed arm, and a hook head is provided on the surface of the movable arm facing the opening side of the notch.

[0013] In an exemplary embodiment, a mounting hole is formed on the bottom surface of the receiving groove, and the mounting hole passes through a surface of the housing facing away from the first notch, and the mounting hole is used to attach a thermally conductive silicone sheet.

[0014] In an exemplary embodiment, a second snap protrusion is provided on the bottom surface of the accommodating groove, and the voltage monitoring element has a second limiting hole for cooperating with the second snap protrusion.

[0015] According to another aspect of the present invention, a battery management system is provided, including a slave control module, where the slave control module is the above-mentioned slave control module.

[0016] According to another aspect of the present invention, a battery pack is provided, comprising a box body and a battery management system, wherein the box body is an extruded aluminum box body, and a first limiting hole is provided on the box body for cooperating with a first snap protrusion on the shell of the slave control module; the battery management system is the above-mentioned battery management system, and the battery management system includes a slave control module.

[0017] According to another aspect of the present invention, a battery pack is provided, comprising a box body, a mounting bracket and a battery management system, wherein the box body is a sheet metal box body; the mounting bracket is arranged on the box body, and the mounting bracket has a first limiting hole for cooperating with a first snap protrusion on the shell of the slave control module; the battery management system is the above-mentioned battery management system, and the battery management system includes a slave control module.

[0018] According to another aspect of the present invention, a battery pack is provided, comprising a box body, a positioning column and a battery management system, wherein the box body is a sheet metal box body; the positioning column is arranged on the box body, and the positioning column is used to cooperate with the third assembly hole on the cover structure of the slave control module and the first assembly hole on the first assembly lug; the battery management system is the above-mentioned battery management system, and the battery management system includes a slave control module.

[0019] By applying the technical solution of the present utility model, a slave control module adapted to different boxes is provided, specifically, the slave control module includes a shell, a first assembly lug, a second assembly lug and a cover plate structure, wherein the shell has a receiving groove, the receiving groove is used to accommodate a voltage monitoring element, and the receiving groove has a first notch; there are N first assembly lugs, and the N first assembly lugs are symmetrically distributed on the outer surfaces of the shell on both sides of the first notch, and each first assembly lug has a first assembly hole; there are M second assembly lugs, and the M second assembly lugs are symmetrically distributed on the outer surfaces of the shell on both sides of the groove bottom of the receiving groove, and each second assembly lug has a second assembly hole; wherein, the N / 2 first assembly lugs and the M / 2 second assembly lugs on the same side are staggered; the cover plate structure is covered at the first notch, and K third assembly holes are opened on the cover plate structure, and the K third assembly holes are symmetrically distributed on both sides of the cover plate structure, part of the K / 2 third assembly holes on the same side are arranged corresponding to the first assembly holes, and the remaining third assembly holes on the same side are arranged corresponding to the second assembly holes.

[0020] As an optional embodiment, when the case of the battery pack is an extruded aluminum case, since a first limiting hole is provided on the case for cooperating with a first snap protrusion on the shell of the slave control module, and at the same time, a first snap protrusion is provided on the surface of the shell facing away from the first slot, when a single slave control module needs to be installed on the case, the first snap protrusion is matched with the first limiting hole on the case of the battery pack, thereby achieving the purpose of positively positioning the single slave control module and installing it on the case. Since a single slave control module is relatively light in weight, the slave control module can be completely fixed directly by the cooperation between the first snap protrusion and the first limiting hole.

[0021] Of course, if after-sales services such as subsequent replacement and repair of the battery pack are required, the slave control module can also be fixed by passing a fastener through the second assembly hole on the second assembly lug and connecting it to the box body, which is convenient for subsequent disassembly and assembly.

[0022] As an optional embodiment, when the box body of the battery pack is an extruded aluminum box body, since a first limiting hole for cooperating with a first snap protrusion on the shell of the slave control module is provided on the box body, and at the same time, a first snap protrusion is provided on the surface of the shell body facing away from the first slot, when multiple slave control modules need to be stacked and installed on the box body, the connection method between the slave control module located at the head and the box body is the same as the connection method of a single slave control module installed on the box body, and the connection method from the second slave control module located after the head to the last slave control module at the tail is that the first snap protrusion is used to cooperate with the fourth assembly hole on the cover structure of the adjacent previous slave control module, thereby achieving the purpose of positively stacking and positioning multiple slave control modules on the box body.

[0023] As an optional embodiment, when the case of the battery pack is a sheet metal case, since the battery pack also includes a mounting bracket, and the mounting bracket is arranged on the case, the mounting bracket has a first limiting hole for cooperating with the first snap protrusion on the shell of the slave control module. At the same time, a first snap protrusion is provided on the surface of the side of the shell away from the first slot. The installation method of a single slave control module on the sheet metal case is consistent with the installation method of a single slave control module on the aluminum extruded case, the difference is that an additional mounting bracket is provided on the sheet metal case, and the specific installation method will not be repeated here. The installation method of multiple slave control modules on the sheet metal case is also consistent with the installation method of multiple slave control modules stacked and installed on the aluminum extruded case, the difference is that an additional mounting bracket is provided on the sheet metal case, and the specific installation method will not be repeated here.

[0024] As an optional embodiment, when the case of the battery pack is a sheet metal case, since the battery pack also includes a positioning column, and the positioning column is arranged on the case, the positioning column is used to cooperate with the third assembly hole on the cover structure of the slave control module and the first assembly hole on the first assembly lug. When the slave control module is installed on the case, the third assembly hole on the cover structure is aligned with the first assembly hole of the first assembly lug, and then the positioning column passes through the third assembly hole and the first assembly hole in sequence, thereby realizing the reverse positioning installation of a single slave control module on the case. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic structural diagram of a slave control module according to an optional embodiment of the present utility model is shown;

[0027] Figure 2 Shown Figure 1 A schematic structural diagram of the housing of the slave control module;

[0028] Figure 3 Shown Figure 1 A structural diagram of the control module from the bottom perspective of the housing;

[0029] Figure 4 Shown Figure 1 A schematic structural diagram of the cover structure of the slave control module;

[0030] Figure 5 It shows a schematic structural diagram of the slave control module installed on the aluminum extruded box according to the first embodiment of the present utility model;

[0031] Figure 6 Shown Figure 5 Schematic diagram of the enlarged structure at B in FIG;

[0032] Figure 7 Shown Figure 6 A schematic diagram of the structure in which multiple slave control modules are stacked and installed on an aluminum extruded box, and a schematic diagram of the cross-sectional structure in which a single slave control module is installed on an aluminum extruded box;

[0033] Figure 8 A schematic diagram showing the structure of the slave control module installed on the aluminum extruded box according to the second embodiment of the present utility model is shown;

[0034] Figure 9 Shown Figure 8 Schematic diagram of the enlarged structure at B in FIG;

[0035] Figure 10 Shows the forward installation of a single slave module into Figure 8 The schematic diagram of the structure on the sheet metal box and the reverse installation of a single slave control module Figure 8 Schematic diagram of the structure on the sheet metal box;

[0036] Figure 11 It shows that multiple slave control modules are stacked and installed on Figure 8 The schematic diagram of the structure on the sheet metal box and the reverse installation of a single slave control module Figure 8 Schematic diagram of the structure on the sheet metal box.

[0037] The above drawings include the following reference numerals:

[0038] 1. Box; 2. Mounting bracket; 3. Positioning column; 4. Slave control module; 5. Blind rivet; 6. Nut; 7. Fastener;

[0039] 10. Housing; 11. Accommodating slot; 12. First notch; 13. First buckle protrusion; 14. Slot structure; 15. Mounting hole; 16. Thermal conductive silicone sheet; 17. Second notch; 18. Second buckle protrusion;

[0040] 20. Voltage monitoring element;

[0041] 30. First assembly lug; 31. First assembly hole; 32. First spacing area;

[0042] 40. Second assembly lug; 41. Second assembly hole; 42. Second spacing area;

[0043] 50. Cover plate structure; 51. Third assembly hole; 52. Fourth assembly hole; 53. Hook structure; 531. Fixed arm; 532. Transition arc segment; 533. Movable arm; 534. Hook head; 54. Notch. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] In order to solve the problem in the prior art that the slave control board needs to be individually adapted according to different installation requirements, which increases the production cost of the battery pack and is not conducive to the economy of the battery pack, the utility model provides a slave control module, a battery management system and a battery pack, wherein the battery management system includes a slave control module, which is the slave control module described above and below, and the battery pack includes a battery management system, which is the battery management system described above and below.

[0046] like Figures 1 to 7As shown, the slave control module 4 of the battery management system includes a shell 10, a first assembly lug 30, a second assembly lug 40 and a cover structure 50, wherein the shell 10 has a receiving groove 11, the receiving groove 11 is used to accommodate the voltage monitoring element 20, and the receiving groove 11 has a first notch 12; there are N first assembly lugs 30, and the N first assembly lugs 30 are symmetrically distributed on the outer surfaces of the shell 10 on both sides of the first notch 12, and each first assembly lug 30 has a first assembly hole 31; there are M second assembly lugs 40, and the M second assembly lugs 40 are symmetrically distributed on both sides of the bottom of the shell 10 at the receiving groove 11. On the outer surface, each second assembly lug 40 has a second assembly hole 41; wherein, N / 2 first assembly lugs 30 and M / 2 second assembly lugs 40 on the same side are staggered; the cover structure 50 is covered at the first notch 12, and K third assembly holes 51 are opened on the cover structure 50, and the K third assembly holes 51 are symmetrically distributed on both sides of the cover structure 50, and part of the K / 2 third assembly holes 51 on the same side are arranged corresponding to the first assembly holes 31, and the remaining third assembly holes 51 on the same side are arranged corresponding to the second assembly holes 41; wherein, a first snap-fit ​​lug is provided on the surface of the side of the shell 10 away from the first notch 12 The cover structure 50 is provided with a fourth assembly hole 52, which is arranged opposite to the first snap protrusion 13; the first snap protrusion 13 is used to cooperate with the first limiting hole on the box body 1 of the battery pack, or the first snap protrusion 13 is used to cooperate with the fourth assembly hole 52 on the matching cover structure 50 of the adjacent slave control module; wherein, when a single slave control module 4 is installed on the box body 1, the first snap protrusion 13 is used to cooperate with the first limiting hole on the box body 1 of the battery pack, so as to positively position the single slave control module 4 on the box body 1; when multiple slave control modules 4 are stacked and installed on the box body 1, the first one located at the top is used to cooperate with the first limiting hole on the box body 1 of the battery pack. The connection method between the slave control module 4 at the head and the box body 1 is the same as the connection method of a single slave control module 4 installed on the box body 1. The connection method of the second slave control module 4 box body 1 located after the head to the last slave control module 4 box body 1 at the tail is that the first snap protrusion 13 is used to cooperate with the fourth assembly hole 52 on the cover structure 50 of the adjacent previous slave control module 4, so as to be used for stacking and positioning multiple slave control modules 4 in the forward direction on the box body 1; or, the third assembly hole 51 and the first assembly hole 31 arranged opposite to each other on the same side are sequentially passed through by the positioning column on the box body 1, so as to reversely position and install a single slave control module 4 on the box body 1.

[0047] The technical solution of the present invention is applied to provide a slave control module 4 adapted to different boxes 1. Specifically, the slave control module 4 includes a shell 10, a first assembly lug 30, a second assembly lug 40 and a cover structure 50, wherein the shell 10 has a receiving groove 11, the receiving groove 11 is used to accommodate the voltage monitoring element 20, and the receiving groove 11 has a first notch 12; there are N first assembly lugs 30, and the N first assembly lugs 30 are symmetrically distributed on the outer surface of the shell 10 on both sides of the first notch 12, and each first assembly lug 30 has a first assembly hole 31; there are M second assembly lugs 40, and M second The assembly lugs 40 are symmetrically distributed on the outer surfaces of both sides of the bottom of the accommodating groove 11 of the shell 10, and each second assembly lug 40 has a second assembly hole 41; wherein, N / 2 first assembly lugs 30 and M / 2 second assembly lugs 40 on the same side are staggered; the cover structure 50 is covered at the first slot 12, and K third assembly holes 51 are opened on the cover structure 50, and the K third assembly holes 51 are symmetrically distributed on both sides of the cover structure 50, and some of the K / 2 third assembly holes 51 on the same side are arranged corresponding to the first assembly holes 31, and the remaining third assembly holes 51 on the same side are arranged corresponding to the second assembly holes 41.

[0048] As an optional embodiment, when the case 1 of the battery pack is an extruded aluminum case, since a first limiting hole is provided on the case 1 for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4, and at the same time, a first snap protrusion 13 is provided on the side surface of the shell 10 away from the first slot 12, when a single slave control module 4 needs to be installed on the case 1, the first snap protrusion 13 is matched with the first limiting hole on the case 1 of the battery pack, thereby achieving the purpose of positively positioning the single slave control module 4 on the case 1. Since the weight of a single slave control module 4 is relatively light, the slave control module 4 can be completely fixed directly by the cooperation between the first snap protrusion 13 and the first limiting hole.

[0049] Of course, if after-sales services such as subsequent replacement and maintenance of the battery pack are required, the slave control module 4 can also be fixed by fasteners passing through the second assembly hole 41 on the second assembly lug 40 and connecting it to the box body 1, which is convenient for subsequent disassembly and assembly.

[0050] As an optional embodiment, when the case 1 of the battery pack is an aluminum extruded case, since a first limiting hole is provided on the case 1 for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4, and at the same time, a first snap protrusion 13 is provided on the surface of the shell 10 facing away from the first slot 12, when multiple slave control modules 4 need to be stacked and installed on the case 1, the connection method between the slave control module 4 located at the head and the case 1 is the same as the connection method of a single slave control module 4 installed on the case 1, and the connection method from the second slave control module 4 located after the head to the last slave control module 4 at the tail is that the first snap protrusion 13 is used to cooperate with the fourth assembly hole 52 on the cover structure 50 of the adjacent previous slave control module 4, thereby achieving the purpose of stacking and positioning multiple slave control modules 4 in the forward direction on the case 1.

[0051] As an optional embodiment, when the case 1 of the battery pack is a sheet metal case, since the battery pack also includes a mounting bracket 2, and the mounting bracket 2 is arranged on the case 1, the mounting bracket 2 has a first limiting hole for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4. At the same time, a first snap protrusion 13 is provided on the surface of the shell 10 facing away from the first slot 12. The installation method of a single slave control module 4 on the sheet metal case is consistent with the installation method of a single slave control module 4 on the aluminum extruded case, except that an additional mounting bracket 2 is provided on the sheet metal case, and the specific installation method is not repeated here. The installation method of multiple slave control modules 4 on the sheet metal case is also consistent with the installation method of multiple slave control modules 4 stacked and installed on the aluminum extruded case, except that an additional mounting bracket 2 is provided on the sheet metal case, and the specific installation method is not repeated here.

[0052] As an optional embodiment, when the case 1 of the battery pack is a sheet metal case, since the battery pack also includes a positioning column 3, and the positioning column 3 is arranged on the case 1, the positioning column 3 is used to cooperate with the third assembly hole 51 on the cover structure 50 of the slave control module 4 and the first assembly hole 31 on the first assembly lug 30. When the slave control module 4 is installed on the case 1, the third assembly hole 51 on the cover structure 50 is aligned with the first assembly hole 31 of the first assembly lug 30, and then the positioning column 3 passes through the third assembly hole 51 and the first assembly hole 31 in turn, thereby realizing the reverse positioning installation of a single slave control module 4 on the case 1.

[0053] Optionally, the number N of the first assembly lugs 30 , the number M of the second assembly lugs 40 , and the number K of the third assembly holes 51 satisfy: N<M=K.

[0054] Preferably, M=K=6, N=4. Thus, the number of first assembly lugs 30 on the same side is 2, the number of second assembly lugs 40 is 6, and the number of third assembly holes 51 is 3. The advantages of this arrangement are explained in detail below:

[0055] It should be noted that, in the present application, the N / 2 first assembly lugs 30 and the M / 2 second assembly lugs 40 on the same side are staggered so that the projection of the first assembly lug 30 in the direction from the first notch 12 of the accommodating groove 11 to the groove bottom is located at the second spacing area 42 between the two adjacent second assembly lugs 40, and the projection of the second assembly lug 40 in the direction from the first notch 12 of the accommodating groove 11 to the groove bottom is located at the first spacing area 32 between the two adjacent first assembly lugs 30, so that when multiple slave control modules 4 are subsequently stacked and installed on the aluminum extruded box body, the connection method between the slave control module 4 at the head and the box body 1 is the same as the connection method of a single slave control module 4 installed on the box body 1, and the connection method from the second slave control module 4 located after the head to the last slave control module 4 at the tail is that the first snap protrusion 13 is used to connect with the corresponding The fourth assembly hole 52 on the cover structure 50 of the adjacent previous slave control module 4 cooperates, thereby achieving the purpose of stacking and positioning multiple slave control modules 4 in the forward direction on the box body 1. At the same time, in order to ensure the connection reliability between multiple slave control modules 4, the slave control module 4 located at the head, the fasteners sequentially pass through the third assembly holes 51 on the cover structure 50 located on the outside of both ends, and the first assembly holes 31 on the first assembly lug 30, thereby connecting the cover structure 50 and the shell 10. The connection method of the second slave control module 4 located after the head to the last slave control module 4 at the tail is that the fasteners sequentially pass through the second assembly hole 41 on the second assembly lug 40 of the second slave control module 4 and the third assembly hole 51 on the cover structure 50 located in the middle, thereby connecting the shell 10 of the second slave control module 4 to the cover structure 50 of the head slave control module 4.

[0056] It should be noted that, in the present application, the surface of the first mounting lug 30 facing away from the second mounting lug 40 is flush with the plane of the first notch 12; and / or the surface of the second mounting lug 40 facing away from the first mounting lug 30 is flush with the surface of the housing 10 facing away from the first notch 12. This ensures the overall compactness and aesthetic appearance of the slave control module.

[0057] Optionally, the cover plate structure 50 is detachably connected to the housing 10 , thereby ensuring that the cover plate structure 50 and the housing 10 are easily assembled and disassembled.

[0058] like Figures 1 to 4 As shown, hook structures 53 are provided on both sides of the cover structure 50, and slot structures 14 are provided on both sides of the receiving slot 11. The hook structures 53 on the same side engage with the slot structures 14 on the same side. This ensures that the cover structure 50 and the housing 10 are easy to assemble and disassemble, while also ensuring a simple and quick connection between the two.

[0059] It should be noted that, in this application, the shape and structure compatibility between the cover structure 50 and the housing 10 is taken into consideration. Figure 4 As shown, the hook structure 53 is located outside the fourth assembly hole 52. In this way, the adaptability between the hook structure 53 and the slot structure 14 is ensured to be high, thereby ensuring the reliability of the matching between the hook structure 53 and the slot structure 14.

[0060] like Figure 4 As shown, both sides of the cover structure 50 have notches 54, and the hook structure 53 is movably disposed in the notches 54, with the hook head 534 of the hook structure 53 oriented in the same direction as the opening of the notches 54. This ensures that the hook head 534 can reliably engage with the slot structure 14 and can reliably exit from the slot structure 14.

[0061] like Figure 4 As shown, the hook structure 53 includes a fixed arm 531, a transition arc segment 532 and a movable arm 533, wherein the first end of the fixed arm 531 is connected to the side wall surface of the notch 54; the first end of the transition arc segment 532 is connected to the second end of the fixed arm 531, and the transition arc segment 532 extends in a curved shape; the first end of the movable arm 533 is connected to the second end of the transition arc segment 532, the second end of the movable arm 533 forms a free end, and there is a movable gap between the second end of the movable arm 533 and the fixed arm 531, and a hook head 534 is provided on the surface of the opening side of the movable arm 533 facing the notch 54. In this way, by setting the hook structure 53 to a structural form including a fixed arm 531, a transition arc segment 532 and a movable arm 533, the setting of the fixed arm 531 ensures the reliability of the connection between the fixed arm 531 and the side wall surface at the notch 54, the setting of the transition arc segment 532 ensures the reliability of the connection between the fixed arm 531 and the movable arm 533, and the setting of the movable arm 533 ensures the reliability of the movement of the hook head 534 driven by the movable arm 533, so that the hook head 534 is engaged with the slot structure 14 along with the movable arm 533 to achieve a snap fit, or withdraws from the slot structure 14 to release the snap fit.

[0062] It should be noted that, in this application, the voltage monitoring element 20 and other components of the slave control module 4 are considered to be seriously heated. Figures 1 to 3 As shown, a mounting hole 15 is formed in the bottom surface of the receiving groove 11, and the mounting hole 15 extends through the side surface of the housing 10 facing away from the first notch 12. The mounting hole 15 is used to attach a thermally conductive silicone sheet 16. In this way, the installation of the thermally conductive silicone sheet 16 can transfer heat to the housing 1, thereby achieving the purpose of cooling the slave control module 4 and ensuring that the slave control module 4 can operate normally at the appropriate ambient temperature.

[0063] like Figures 1 to 3As shown, the receiving groove 11 further has a second notch 17, which is communicated with the first notch 12 and faces the side of the housing 10. In this way, the second notch 17 is provided to facilitate the lead-out of the pressure line.

[0064] like Figure 2 As shown, the bottom surface of the receiving groove 11 is provided with a second buckle protrusion 18, and the voltage monitoring element 20 has a second limiting hole for cooperating with the second buckle protrusion 18. In this way, the voltage monitoring element 20 is ensured to be easy to assemble and disassemble.

[0065] It should be noted that in an embodiment not shown in the figures of the present application, the battery pack includes a box body 1 and a battery management system, wherein the box body 1 is an aluminum extruded box body, and the box body 1 is provided with a first limiting hole for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4; the battery management system is the battery management system described above and below, and the battery management system includes the slave control module 4.

[0066] Example 1

[0067] like Figures 5 and 6 As shown, when the case 1 of the battery pack is an aluminum extruded case, since a first limiting hole is provided on the case 1 for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4, and at the same time, a first snap protrusion 13 is provided on the surface of the shell 10 away from the first slot 12, when a single slave control module 4 needs to be installed on the case 1, the first snap protrusion 13 is matched with the first limiting hole on the case 1 of the battery pack, thereby achieving the purpose of positively positioning the single slave control module 4 on the case 1. Since the weight of a single slave control module 4 is relatively light, the slave control module 4 can be completely fixed directly by the cooperation between the first snap protrusion 13 and the first limiting hole.

[0068] Example 2

[0069] like Figure 7 As shown, if after-sales services such as subsequent replacement and repair of the battery pack are required, the slave control module 4 can also be fixed by passing the fastener 7 through the second assembly hole 41 on the second assembly lug 40 and connecting it to the box body 1, which is convenient for subsequent disassembly and assembly.

[0070] Example 3

[0071] like Figures 5 to 7As shown, when the box body 1 of the battery pack is an aluminum extruded box body, since a first limiting hole is provided on the box body 1 for cooperating with the first snap protrusion 13 on the shell body 10 of the slave control module 4, and at the same time, a first snap protrusion 13 is provided on the side surface of the shell body 10 away from the first notch 12. When multiple slave control modules 4 need to be stacked and installed on the box body 1, the connection method between the slave control module 4 located at the head and the box body 1 is the same as the connection method of a single slave control module 4 installed on the box body 1. The connection method from the second slave control module 4 located after the head to the last slave control module 4 at the tail is that the first snap protrusion 13 is used to cooperate with the fourth assembly hole 52 on the cover structure 50 of the adjacent previous slave control module 4, thereby achieving the purpose of stacking and positioning multiple slave control modules 4 in the forward direction on the box body 1.

[0072] Example 4

[0073] like Figures 8 to 10 As shown, the battery pack includes a box body 1, a mounting bracket 2 and a battery management system, wherein the box body 1 is a sheet metal box body; the mounting bracket 2 is arranged on the box body 1, and the mounting bracket 2 has a first limiting hole for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4; the battery management system is the battery management system described above and below, and the battery management system includes the slave control module 4. When the case 1 of the battery pack is a sheet metal case, since the battery pack also includes a mounting bracket 2, and the mounting bracket 2 is arranged on the case 1, the mounting bracket 2 has a first limiting hole for cooperating with the first snap protrusion 13 on the shell 10 of the slave control module 4. At the same time, a first snap protrusion 13 is provided on the surface of the shell 10 facing away from the first slot 12. The installation method of a single slave control module 4 on the sheet metal case is consistent with the installation method of a single slave control module 4 on the aluminum extruded case, except that an additional mounting bracket 2 is provided on the sheet metal case, and the specific installation method is not repeated here. The installation method of multiple slave control modules 4 on the sheet metal case is also consistent with the installation method of multiple slave control modules 4 stacked and installed on the aluminum extruded case, except that an additional mounting bracket 2 is provided on the sheet metal case, and the specific installation method is not repeated here.

[0074] Example 5

[0075] like Figure 11As shown, a battery pack includes a housing 1, positioning posts 3, and a battery management system. The housing 1 is a sheet metal housing; the positioning posts 3 are disposed on the housing 1 and are configured to mate with third mounting holes 51 on the cover structure 50 of the slave module 4 and first mounting holes 31 on the first mounting lug 30. The battery management system is the battery management system described above and below, and includes a slave module 4. When the battery pack housing 1 is a sheet metal housing, the battery pack further includes positioning posts disposed on the housing 1 and is configured to mate with the third mounting holes 51 on the cover structure 50 of the slave module 4 and first mounting holes 31 on the first mounting lug 30. When the slave module 4 is installed on the housing 1, the third mounting hole 51 on the cover structure 50 is aligned with the first mounting hole 31 on the first mounting lug 30. The positioning posts then pass through the third mounting holes 51 and first mounting holes 31, sequentially, thereby achieving reverse positioning and installation of a single slave module 4 on the housing 1.

[0076] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0077] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0078] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0080] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A slave control module of a battery management system, characterized in that: include: A housing (10), the housing (10) having a receiving groove (11), the receiving groove (11) being used to receive a voltage monitoring element (20), the receiving groove (11) having a first notch (12); First assembly lugs (30), the number of the first assembly lugs (30) being N, the N first assembly lugs (30) being symmetrically distributed on the outer surfaces of both sides of the housing (10) located at the first notch (12), and each first assembly lug (30) having a first assembly hole (31); Second assembly lugs (40), the number of the second assembly lugs (40) being M, the M second assembly lugs (40) being symmetrically distributed on both sides of the outer surface of the housing (10) at the bottom of the accommodating groove (11), and each second assembly lug (40) having a second assembly hole (41); Wherein, N / 2 of the first assembly lugs (30) and M / 2 of the second assembly lugs (40) on the same side are arranged alternately; A cover plate structure (50), the cover plate structure (50) is arranged to cover the first notch (12), the cover plate structure (50) is provided with K third assembly holes (51), the K third assembly holes (51) are symmetrically distributed on both sides of the cover plate structure (50), part of the K / 2 third assembly holes (51) on the same side are arranged corresponding to the first assembly hole (31), and the remaining third assembly holes (51) on the same side are arranged corresponding to the second assembly hole (41); A first buckle protrusion (13) is provided on a surface of the housing (10) facing away from the first notch (12), and a fourth assembly hole (52) is further provided on the cover structure (50), wherein the fourth assembly hole (52) is arranged opposite to the first buckle protrusion (13); The first snap-fit ​​protrusion (13) is used to cooperate with the first limiting hole on the box (1) of the battery pack, or the first snap-fit ​​protrusion (13) is used to cooperate with the fourth assembly hole (52) on the matching cover structure (50) of the adjacent slave control module; When a single slave control module is mounted on the box (1), the first buckle protrusion (13) is used to cooperate with the first limiting hole on the box (1) of the battery pack, so as to be used to positively position the single slave control module and mount it on the box (1); When a plurality of the slave control modules are stacked and installed on the box (1), the connection method of the slave control module located at the head and the box (1) is the same as the connection method of a single slave control module installed on the box (1), and the connection method of the slave control modules located at the second slave control module box (1) next to the head to the last box (1) at the tail is that the first buckle protrusion (13) is used to cooperate with the fourth assembly hole (52) on the cover structure (50) of the adjacent previous slave control module, so as to stack and position the plurality of slave control modules in a positive direction on the box (1); or, The third assembly hole (51) and the first assembly hole (31) arranged opposite to each other on the same side are sequentially passed through by the positioning column on the box body (1) to reversely position and install the single slave control module on the box body (1).

2. The slave control module according to claim 1, characterized in that: The number N of the first assembly lugs (30), the number M of the second assembly lugs (40), and the number K of the third assembly holes (51) satisfy: N<M=K.

3. The slave control module according to claim 1, wherein: The surface of the first assembly lug (30) facing away from the second assembly lug (40) is flush with the plane where the first notch (12) is located; and / or, The surface of the second assembly lug (40) facing away from the first assembly lug (30) is flush with the surface of the housing (10) facing away from the first notch (12).

4. The slave control module according to claim 1, wherein: The cover plate structure (50) is detachably connected to the housing (10).

5. The slave control module according to claim 1, wherein: Both sides of the cover plate structure (50) are provided with hook structures (53), and both groove wall surfaces of the accommodating groove (11) are provided with groove structures (14), and the hook structures (53) on the same side are engaged with the groove structures (14) on the same side.

6. The slave control module according to claim 5, characterized in that: The hook structure (53) is located outside the fourth assembly hole (52).

7. The slave control module according to claim 6, characterized in that: Both sides of the cover plate structure (50) are provided with notches (54), and the hook structure (53) is movably disposed in the notches (54).

8. The slave control module according to claim 7, characterized in that: The hook structure (53) comprises: a fixed arm (531), wherein a first end of the fixed arm (531) is connected to a side wall surface of the notch (54); a transition arc segment (532), wherein a first end of the transition arc segment (532) is connected to a second end of the fixed arm (531), and the transition arc segment (532) extends in a curved shape; A movable arm (533), wherein the first end of the movable arm (533) is connected to the second end of the transition arc segment (532), the second end of the movable arm (533) forms a free end, and a movable gap is provided between the second end of the movable arm (533) and the fixed arm (531), and a hook head (534) is provided on the surface of the movable arm (533) on the opening side facing the notch (54).

9. The slave control module according to any one of claims 1 to 8, characterized in that: A mounting hole (15) is provided on the bottom surface of the receiving groove (11), and the mounting hole (15) passes through the side surface of the housing (10) facing away from the first notch (12), and the mounting hole (15) is used to attach a thermally conductive silicone sheet (16).

10. The slave control module according to any one of claims 1 to 8, characterized in that: A second snap-fit ​​protrusion (18) is provided on the bottom surface of the accommodating groove (11), and the voltage monitoring element (20) has a second limiting hole for cooperating with the second snap-fit ​​protrusion (18).

11. A battery management system, characterized in that: It comprises a slave control module (4), wherein the slave control module (4) is the slave control module according to any one of claims 1 to 10.

12. A battery pack, characterized in that: include: A box body (1), wherein the box body (1) is an aluminum extruded box body, and a first limiting hole is provided on the box body (1) for cooperating with a first snap-fit ​​protrusion (13) on a housing (10) of a slave control module (4); A battery management system, wherein the battery management system is the battery management system according to claim 11, and the battery management system includes the slave control module (4).

13. A battery pack, characterized in that: include: A box body (1), wherein the box body (1) is a sheet metal box body; A mounting bracket (2), the mounting bracket (2) being arranged on the box body (1), the mounting bracket (2) having a first limiting hole for cooperating with a first snap-fit ​​protrusion (13) on a housing (10) of the slave control module (4); A battery management system, wherein the battery management system is the battery management system according to claim 11, and the battery management system includes the slave control module (4).

14. A battery pack, characterized in that: include: A box body (1), wherein the box body (1) is a sheet metal box body; A positioning column (3), the positioning column (3) being arranged on the box body (1), the positioning column (3) being used to cooperate with a third assembly hole (51) on a cover plate structure (50) of a slave control module (4) and a first assembly hole (31) on a first assembly lug (30); A battery management system, wherein the battery management system is the battery management system according to claim 11, and the battery management system includes the slave control module (4).

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