BDU module and battery system

Abstract

The utility model provides a BDU module and a battery system, the BDU module is used for the battery system, the battery system comprises the battery module, and the BDU module comprises a base and a plurality of wiring conducting bars. The base comprises a first bearing table and a second bearing table, and the first bearing table and the second bearing table are different in height in the height direction of the base. The plurality of wiring conducting bars comprise a first conducting bar and a second conducting bar, the first conducting bar is used for electrically connecting the positive electrode of the battery module and the positive electrode of the external equipment, the second conducting bar is used for electrically connecting the negative electrode of the battery module and the negative electrode of the external equipment, and the first conducting bar and the second conducting bar are arranged at an interval; one of the first bearing platform and the second bearing platform is selected to bear a first conducting bar, and one of the first bearing platform and the second bearing platform is selected to bear a second conducting bar. And the first conducting bar and the second conducting bar can be adjusted along the height direction of the base according to the position of the charging / discharging interface of the battery system, so that the problem that the BDU in the same project cannot be compatibly applied in the battery pack in different projects is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to a BDU module and a battery system. Background Art

[0002] A Battery Energy Distribution Unit (BDU) is a high-voltage power-off system in a new energy lithium battery module (or battery pack, battery package), which controls the current flow to different loads and is electrically connected to the high-voltage circuit of a new energy vehicle. It is an important accessory in the high-voltage circuit of a new energy vehicle and controls the power-on and power-off processes, pre-charging process, and charging process of the high-voltage electrical circuit.

[0003] Taking the battery pack as an example, in the related art, the charging / discharging interface positions for connecting peripheral electrical devices and power supply devices in battery packs of different projects are usually different. The different charging / discharging interface positions make the same BDU unable to be compatibly applied between battery packs of different projects. To achieve the target electrical functions of different battery packs, it is necessary to design a corresponding BDU for each project's battery pack that can match its charging / discharging interface position. However, generally, the BDUs between battery packs of different projects apply basically the same electrical principle. If a BDU that matches the charging / discharging interface position of different project battery packs is still designed under the condition that the electrical principle of the BDU is basically the same, it will inevitably increase the R & D investment cost of the enterprise. Summary of the Utility Model

[0004] An embodiment of the utility model provides a BDU module, which can improve the technical problem that in the related art, the BDU cannot be compatibly applied between battery packs of different projects under the condition that the electrical principle is basically the same.

[0005] In a first aspect, an embodiment of the utility model provides a BDU module for a battery system, the battery system including a battery module, the BDU module including:

[0006] A base including a first bearing platform and a second bearing platform, the heights of the first bearing platform and the second bearing platform being different along the height direction of the base;

[0007] A plurality of wiring conductive bars including a first conductive bar and a second conductive bar, the first conductive bar being used for electrically connecting the positive electrode of the battery module and the positive electrode of the peripheral device, and the second conductive bar being used for electrically connecting the negative electrode of the battery module and the negative electrode of the external device;

[0008] The first conductive bar and the second conductive bar are arranged at intervals,

[0009] The first carrier platform and the second carrier platform selectively carry the first conductive busbar;

[0010] The first carrier platform and the second carrier platform selectively carry the second conductive busbar.

[0011] In one embodiment, the wiring conductive busbar further includes a third conductive busbar and a fourth conductive busbar. The third conductive busbar is used for electrically connecting between the positive electrode of the battery module and the positive electrode of the peripheral device, and the fourth conductive busbar is used for electrically connecting between the negative electrode of the battery module and the negative electrode of the peripheral device;

[0012] Any two of the first conductive busbar, the second conductive busbar, the third conductive busbar, and the fourth conductive busbar are spaced apart. The first carrier platform and the second carrier platform selectively carry the third conductive busbar;

[0013] The first carrier platform and the second carrier platform selectively carry the fourth conductive busbar.

[0014] In one embodiment, along the height direction of the base, the first carrier platform is higher than the second carrier platform; the first carrier platform includes two first carrier positions, and the second carrier platform includes two second carrier positions. Along the length direction of the base, the two first carrier positions are located between the two second carrier positions;

[0015] Along the length direction of the base, the two ends of the base are respectively provided with a positive terminal and a negative terminal. The positive terminal, a second carrier position, the two first carrier positions, the other second carrier position, and the negative terminal are arranged in sequence; at one end close to the positive terminal, one first carrier position carries one of the first conductive busbar and the third conductive busbar, and one second carrier position carries the other of the first conductive busbar and the third conductive busbar. At the other end close to the negative terminal, the other first carrier position carries one of the second conductive busbar and the fourth conductive busbar, and the other second carrier position carries the other of the second conductive busbar and the fourth conductive busbar; the first conductive busbar and the third conductive busbar are connected to the positive terminal, and the second conductive busbar and the fourth conductive busbar are connected to the negative terminal.

[0016] In one embodiment, the first carrier platform further includes an insulating convex plate. The insulating convex plate is provided on the first carrier platform and is located between the two first carrier positions to separate two adjacent wiring conductive busbars.

[0017] In one embodiment, the first conductive busbar and the second conductive busbar are detachably connected to one of the first carrier platform or the second carrier platform, and the third conductive busbar and the fourth conductive busbar are detachably connected to the other of the first carrier platform or the second carrier platform; or,

[0018] The first conductive bar and the fourth conductive bar are detachably connected to one of the first carrier or the second carrier, and the second conductive bar and the third conductive bar are detachably connected to the other of the first carrier or the second carrier.

[0019] In one embodiment, the BDU module further includes a connecting member, and the connecting member includes a connecting column and a connecting end provided at one end of the connecting column;

[0020] The first carrier and / or the second carrier is provided with a first through hole, and a limiting structure is provided on a side of the first carrier and / or the second carrier facing away from the wiring conductive bar;

[0021] At least a part of the wiring conductive bar is provided with a connecting hole, the connecting column passes through the first through hole and the connecting hole, and the connecting end is clamped by the limiting structure.

[0022] In one embodiment, the limiting structure includes a limiting edge and a limiting protrusion. The limiting edge surrounds and forms the first through hole, and the limiting protrusion is spaced from the limiting edge; the limiting protrusion includes a limiting end face and a guiding inclined surface. The limiting end face faces the limiting edge, and the guiding inclined surface faces away from the limiting end face; the guiding inclined surface is used for enabling the connecting end of the connecting member to slide and be assembled between the limiting edge and the limiting protrusion along the guiding inclined surface.

[0023] In one embodiment, along the width direction of the base, the base further includes a first side and a second side arranged oppositely, and each wiring conductive bar extends from the first side to the second side.

[0024] In one embodiment, the BDU module further includes a plurality of adapter members, and the plurality of adapter members include a first adapter electric bar, a second adapter electric bar, a third adapter electric bar, and a fourth adapter electric bar.

[0025] At one end close to the positive electrode, one of the first adapter electric bar and the third adapter electric bar is bendably electrically connected to the positive electrode and a wiring conductive bar provided at a second bearing position. At the other end close to the negative electrode, one of the second adapter electric bar and the fourth adapter electric bar is bendably electrically connected to the negative electrode and a wiring conductive bar provided at another second bearing position.

[0026] In a second aspect, an embodiment of the present invention further provides a battery system, including: a battery module; and the BDU module according to any embodiment of the present application, and the battery module is electrically connected to the BDU module.

[0027] The beneficial effects of the embodiments of the present invention:

[0028] In this application, a first bearing platform and a second bearing platform with different heights are designed along the height direction of the base. The first conductive row and the second conductive row are arranged at intervals, and the first bearing platform and the second bearing platform alternately bear the first conductive row, and the first bearing platform and the second bearing platform alternately bear the second conductive row, so that the first conductive row and the second conductive row can be adjusted along the height direction of the base according to the positions of the charging / discharging interfaces of the battery system. Furthermore, in the case where the electrical principles are basically the same, the BDU modules of the same project can be applied to the battery systems of different projects, solving the technical problem that the BDU of the same project cannot be compatibly applied in the battery packs of different projects in the related art, avoiding re-design and mold opening, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of the BDU module provided by the embodiment of the present invention;

[0031] Figure 2 is an exploded schematic diagram of the BDU module provided by the embodiment of the present invention;

[0032] Figure 3 is an assembly schematic diagram between the BDU and the base provided by the embodiment of the present invention;

[0033] Figure 4 is a schematic top-side structure diagram of the base provided by the embodiment of the present invention;

[0034] Figure 5 is a schematic bottom-side structure diagram of the base provided by the embodiment of the present invention;

[0035] Figure 6 is Figure 5 an enlarged schematic diagram of part A in;

[0036] Figure 7 is a schematic cross-sectional diagram of the BDU module provided by the embodiment of the present invention;

[0037] Figure 8 is Figure 7 an enlarged schematic diagram of part B in;

[0038] Figure 9 is a schematic top-side structure diagram of the BDU module provided by the embodiment of the present invention.

[0039] Description of the reference numerals:

[0040] 1. BDU module; 10. Base; X. Height direction; Y. Length direction; Z. Width direction; 101. Installation space; 102. Accommodation space; 11. First carrier; 111. First carrier position; 12. Second carrier; 121. Second carrier position; 13. Positive terminal; 14. Negative terminal; 18. Insulating convex plate; 15. Connecting member; 151. Connecting column; 152. Connecting end; 16. First through hole; 17. Limiting structure; 171. Limiting edge; 172. Limiting protrusion; 1721. Limiting end face; 1722. Guide inclined plane; 173. Limiting enclosure wall; 1731. First sub-side wall; 1732. Notch; 1733. Elastic part; 20. BDU; 21. Wiring conductive busbar; 211. First conductive busbar; 212. Second conductive busbar; 213. Third conductive busbar; 214. Fourth conductive busbar; 201. Connecting hole; 22. Adapter; 221. First adapter electric busbar; 222. Second adapter electric busbar; 223. Third adapter electric busbar; 224. Fourth adapter electric busbar; 23. Electrical component; 30. Battery cluster management unit. Detailed implementation manners

[0041] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. In the present utility model, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0042] The battery energy distribution unit (BDU) is a high-voltage power-off system in a new energy lithium battery module (or battery pack, battery pack), controls the current flow direction, supplies different loads, and is electrically connected to the high-voltage circuit of a new energy vehicle. It is an important accessory in the high-voltage circuit of a new energy vehicle and controls the power-on and power-off processes, pre-charging process, and charging process of the high-voltage electrical circuit.

[0043] Taking the battery pack as an example, in the related art, the charging / discharging interface positions for connecting peripheral electrical devices and power supply devices of battery packs in different projects are usually different. The different positions of the peripheral charging / discharging interfaces make the same BDU unable to be compatibly applied between battery packs of different projects. To achieve the target electrical functions of different battery packs, it is necessary to design corresponding BDUs for each project's battery pack that can match its charging / discharging interface position. However, usually, the BDUs between battery packs of different projects apply basically the same electrical principle. In the case where the electrical principle of the BDU is basically the same, if BDUs that match the charging / discharging interface positions of battery packs in different projects are still designed, it will inevitably increase the R & D investment cost of the enterprise.

[0044] Based on the technical problem that the BDU in the related art cannot be compatibly applied between battery packs of different projects, the embodiment of the present application provides a BDU module 1.

[0045] Please refer to Figures 1 to 3 , Figure 1 which is a schematic structural diagram of the BDU module 1 provided by the embodiment of the present application, Figure 2 which is an exploded schematic diagram of the BDU module 1 provided by the embodiment of the present application, Figure 3 which is an assembly schematic diagram between the BDU 20 and the base 10 provided by the embodiment of the present application.

[0046] The BDU module 1 provided by the present application is applied to a battery system, for example, it can be applied to a battery pack. The battery system may include a battery module (not shown in the figure). The BDU module 1 may include a base 10 and a BDU 20. The BDU 20 includes a plurality of wiring conductive bars 21. Among them, the base 10 is provided with an installation space 101. The base 10 may include a first bearing platform 11 and a second bearing platform 12. The BDU 20, the first bearing platform 11, and the second bearing platform 12 may be arranged in the installation space 101. Along the height direction X of the base 10, the heights of the first bearing platform 11 and the second bearing platform 12 are different. Each wiring conductive bar 21 may be a copper bar, an aluminum bar, or a plate-shaped structural member made of any other suitable conductive material, and is used for inputting or outputting high-voltage current. The plurality of wiring conductive bars 21 may include a first conductive bar 211 and a second conductive bar 212. The first conductive bar 211 is used for electrically connecting the positive electrode of the battery module and the positive electrode of the peripheral device, and the second conductive bar 212 is used for electrically connecting the negative electrode of the battery module and the negative electrode of the peripheral device. The peripheral device may be an electrical device or a power supply device. For example, the electrical device may be a motor, an in-vehicle air-conditioning compressor, or a PTC heater in a new energy vehicle, and the power supply device may be a charging pile for charging a new energy vehicle. The first conductive bar 211 and the second conductive bar 212 are arranged at intervals. The first bearing platform 11 and the second bearing platform 12 alternately bear the first conductive bar 211, and the first bearing platform 11 and the second bearing platform 12 alternately bear the second conductive bar 212.

[0047] By designing the first bearing platform 11 and the second bearing platform 12 with different heights along the height direction X of the base 10, the first conductive bar 211 and the second conductive bar 212 are arranged at intervals, and the first bearing platform 11 and the second bearing platform 12 alternately bear the first conductive bar 211, and the first bearing platform 11 and the second bearing platform 12 alternately bear the second conductive bar 212, so that both the first conductive bar 211 and the second conductive bar 212 can be adjusted along the height direction X of the base 10 according to the height position of the charge / discharge interface of the battery system. Furthermore, in the case where the electrical principle is basically the same, the BDU module 1 of the same project can be applied to the battery systems of different projects, solving the technical problem that the BDU of the same project cannot be compatibly applied in the battery packs of different projects in the related art, thereby avoiding the situation of re-designing and mold opening, and effectively saving the production cost.

[0048] Please refer to Figure 2 and Figure 3, the wiring conductive bar 21 may further include a third conductive bar 213 and a fourth conductive bar 214. The third conductive bar 213 is used for electrically connecting between the positive electrode of the battery module and the positive electrode of the peripheral device (such as a power supply device), and the fourth conductive bar 214 is used for electrically connecting between the negative electrode of the battery module and the negative electrode of the peripheral device (such as a power supply device). Any two of the first conductive bar 211, the second conductive bar 212, the third conductive bar 213, and the fourth conductive bar 214 are arranged at intervals. The first carrier 11 and the second carrier 12 alternatively carry the third conductive bar 213, and the first carrier 11 and the second carrier 12 alternatively carry the fourth conductive bar 214. The conductive power of the third conductive bar 213 and the fourth conductive bar 214 can be set to be different from the conductive power of the first conductive bar 211 and the second conductive bar 212. In some embodiments, the conductive power of the third conductive bar 213 and the fourth conductive bar 214 is greater than the conductive power of the first conductive bar 211 and the second conductive bar 212. Exemplarily, the third conductive bar 213 and the fourth conductive bar 214 can form a part of the BDU20 fast charging circuit, and the first conductive bar 211 and the second conductive bar 212 can form a part of the normal charging / discharging circuit of the BDU. Either the third conductive bar 213 or the fourth conductive bar 214 can be alternatively arranged on the first carrier 11 or the second carrier 12. In other words, when the first conductive bar 211 and the second conductive bar 212 are both arranged on the first carrier 11, the third conductive bar 213 and the fourth conductive bar 214 are both arranged on the second carrier 12. When the first conductive bar 211 and the second conductive bar 212 are both arranged on the second carrier 12, the third conductive bar 213 and the fourth conductive bar 214 are both arranged on the first carrier 11. When the first conductive bar 211 and the third conductive bar 213 are both arranged on the first carrier 11, the second conductive bar 212 and the fourth conductive bar 214 are both arranged on the second carrier 12. When the first conductive bar 211 and the third conductive bar 213 are both arranged on the second carrier 12, the second conductive bar 212 and the fourth conductive bar 214 are both arranged on the first carrier 11. Thus, it can be made that the normal charging / discharging power connection terminal formed by the first conductive bar 211 and the second conductive bar 212 and the fast charging power connection terminal formed by the third conductive bar 213 and the fourth conductive bar 214 can be adaptively adjusted along the height position of the base 10 according to the different height positions of the charging / discharging power connection terminal of the battery system. Furthermore, in the case where the electrical principle is basically the same, the BDU module 1 of the same project can be made to match the battery systems with different numbers of charging / discharging interfaces.

[0049] Please refer to Figure 4 , Figure 4Schematic top view of the base 10 provided by the embodiments of the present application. In some embodiments of the present application, along the height direction X of the base 10, the first carrier platform 11 may be higher than the second carrier platform 12. The first carrier platform 11 may include two first carrier positions 111, and the second carrier platform 12 may include two second carrier positions 121. Along the length direction Y of the base 10, the two first carrier positions 111 may be located between the two second carrier positions 121. Exemplarily, along the height direction X of the base 10, the first carrier platform 11 may protrude from the second carrier platform 12. In the length direction Y of the base 10, the first carrier platform 11 may be disposed between the two ends of the second carrier platform 12, so that the first carrier platform 11 and the second carrier platform 12 are combined into a stepped shape with both ends low and the middle high along the length direction Y of the base 10. Along the length direction Y of the base 10, a positive terminal 13 and a negative terminal 14 may be respectively provided at both ends of the base 10. The positive terminal 13, a second carrier position 121, two first carrier positions 111, the other second carrier position 121, and the negative terminal 14 are arranged in sequence. At one end close to the positive terminal 13, one of the first carrier positions 111 may carry one of the first conductive busbar 211 and the third conductive busbar 213, and one of the second carrier positions 121 may carry the other of the first conductive busbar 211 and the third conductive busbar 213. At the other end close to the negative terminal 14, the other first carrier position 111 may carry one of the second conductive busbar 212 and the fourth conductive busbar 214, and the other second carrier position 121 may carry the other of the second conductive busbar 212 and the fourth conductive busbar 214. And the first conductive busbar 211 and the third conductive busbar 213 may be connected to the positive terminal 13, and the second conductive busbar 212 and the fourth conductive busbar 214 may be connected to the negative terminal 14. In other words, in the direction from the positive terminal 13 to the negative terminal 14, the first conductive busbar 211, the third conductive busbar 213, the fourth conductive busbar 214, and the second conductive busbar 212 are arranged in sequence along the length direction Y of the base 10, or the third conductive busbar 213, the first conductive busbar 211, the second conductive busbar 212, and the fourth conductive busbar 214 are arranged in sequence along the length direction Y of the base 10, or the first conductive busbar 211, the third conductive busbar 213, the second conductive busbar 212, and the fourth conductive busbar 214 are arranged in sequence along the length direction Y of the base 10, or the third conductive busbar 213, the first conductive busbar 211, the fourth conductive busbar 214, and the second conductive busbar 212 are arranged in sequence along the length direction Y of the base 10. By making the ordinary charge / discharge connection terminals and the fast charge connection terminals of the BDU module 1 adjustable along the height direction X, different project battery packs can be compatible.

[0050] Please continue to refer to Figure 4, in some embodiments of the present application, to avoid incorrect connection between the positive and negative connection conductive bars 21 and ensure the safe and reliable operation of the BDU 20, the base 10 may further include an insulating convex plate 18. The insulating convex plate 18 is provided on the first bearing platform 11 and located between two first bearing positions 111 to separate two adjacent connection conductive bars 21. For example, when the first conductive bar 211 and the second conductive bar 212 are respectively arranged at two first bearing positions 111, the insulating convex plate 18 separates the first conductive bar 211 and the second conductive bar 212, which can prevent the short - circuit caused by the incorrect connection between the first conductive bar 211 and the second conductive bar 212 during the operation of the BDU. In some embodiments, to better prevent incorrect connection, the height of the insulating convex plate 18 protruding from the first bearing position 111 can be set to be greater than the thickness of the connection conductive bar 21, so as to eliminate the situation that the two connection conductive bars 21 arranged on the first bearing platform 11 may become loose and mis - connected under working conditions such as impact and shaking.

[0051] Please refer to Figures 4 to 8 , Figure 5 which is a schematic diagram of the bottom structure of the base 10 provided by the embodiment of the present application, Figure 6 and Figure 5 is an enlarged schematic diagram of part A in Figure 7 which is a schematic cross - sectional view of the BDU module 1 provided by the embodiment of the present application, Figure 8 and Figure 7An enlarged schematic view of part B. In the embodiments of the present application, to facilitate the flexible adjustment of the installation of the first conductive busbar 211, the second conductive busbar 212, the third conductive busbar 213, and the fourth conductive busbar 214 according to the position and / or quantity of the charging / discharging interface of the battery pack, each wiring conductive busbar 21 can be detachably arranged on the base. For example, the first conductive busbar 211 and the second conductive busbar 212 are detachably connected to one of the first carrier 11 or the second carrier 12, and the third conductive busbar 213 and the fourth conductive busbar 214 are detachably connected to the other of the first carrier 11 or the second carrier 12; or, the first conductive busbar 211 and the fourth conductive busbar 214 are detachably connected to one of the first carrier 11 or the second carrier 12, and the second conductive busbar 212 and the third conductive busbar 213 are detachably connected to the other of the first carrier 11 or the second carrier 12. In some embodiments, the BDU module 1 (or BDU 20) may further include a connecting member 15. The connecting member 15 may include a connecting column 151 and a connecting end 152 provided at one end of the connecting column 151, and the radial dimension of the connecting end 152 is greater than the radial dimension of the connecting column 151. The first carrier 11 and / or the second carrier 12 are provided with a first through hole 16, and the radial dimension of the first through hole 16 is smaller than the radial dimension of the connecting end 152. A limiting structure 17 may be provided on the side of the first carrier 11 and / or the second carrier 12 facing away from the wiring conductive busbar 21. At least part of the wiring conductive busbar 21 is provided with a connecting hole 201. During the process of connecting the wiring conductive busbar 21 to the base 10, the connecting column 151 can pass through the first through hole 16 and the connecting hole 201, and then the connecting end 152 can abut against the edge forming the first through hole 16 or be clamped in the limiting structure 17, so that the first conductive busbar 211, the second conductive busbar 212, the third conductive busbar 213, and the fourth conductive busbar 214 can be detachably arranged on the first carrier 11 and the second carrier 12.

[0052] Please refer to Figure 6 and Figure 8 , in some embodiments, the limiting structure 17 may include a limiting edge 171 and a limiting protrusion 172. The limiting edge 171 surrounds and forms the first through hole 16. The limiting protrusion 172 is arranged opposite to the wiring conductive busbar 21, and the limiting protrusion 172 may be spaced from the limiting edge 171. The limiting protrusion 172 includes a limiting end face 1721 and a guiding inclined surface 1722. The limiting end face 1721 faces the limiting edge 171, and the guiding inclined surface 1722 faces away from the limiting end face 1721. The guiding inclined surface 1722 is used to enable the connecting end 152 of the connecting member 15 to slide and be assembled between the limiting edge 171 and the limiting end face 1721 along the guiding inclined surface 1722. Please refer to Figure 6, Exemplarily, the limiting structure 17 may further include a limiting enclosure wall 173. The limiting enclosure wall 173 is disposed on a side of the limiting edge 171 away from the wiring conductive row 21 and is arranged around the first through hole 16, so that at least part of the limiting edge 171 is located within the range surrounded by the limiting enclosure wall 173. The limiting enclosure wall 173 may include at least two oppositely arranged first sub-side walls 1731. On the inner wall of each first sub-side wall 1731 facing the first through hole 16, the above-mentioned limiting protrusion 172 may be provided. For the convenience of assembling the connecting member 15, in some embodiments, each first sub-side wall 1731 may further be provided with at least two notches 1732. The portion of the first sub-side wall 1731 located between two adjacent notches 1732 forms an elastic portion 1733. The elastic portion 1733 has a first end close to the limiting edge 171 and a second end away from the limiting edge 171. The limiting protrusion 172 may be provided at the first end or the second end of the elastic portion 1733, or may be provided at any position between the first end and the second end of the elastic portion 1733. When using the connecting member 15 to connect the wiring conductive row 21 to the base 10, the connecting end 152 of the connecting member 15 slides along the guiding inclined surface 1722 and has an assembly interference therewith. The elastic portion 1733 deforms in a direction deviating from the connecting member 15, so as to facilitate the connecting end 152 of the connecting member 15 to be clamped between the limiting edge 171 and the limiting protrusion 172. Finally, the connecting column 151 passes through the first through hole 16 and the connecting hole 201, thereby realizing the detachable connection of the connecting member 15 to the base 10 and the wiring conductive row 21. In the embodiment of the present application, by providing at least two notches 1732 in the first sub-side wall 1731, the portion between two adjacent notches 1732 of the first sub-side wall 1731 forms an elastic portion 1733, and the limiting protrusion 172 is provided on the elastic portion 1733. When assembling and disassembling the connecting member 15, an interference occurs between the connecting member 15 and the limiting protrusion 172, so that the elastic portion 1733 can undergo elastic deformation. The advantage of such a design is that the difficulty of assembling and disassembling the connecting member 15 on the base 10 can be reduced, and the convenience of assembling and disassembling is greatly improved. It can be understood that the installation method of the wiring conductive row 21 on the base 10 is not limited to the above-mentioned detachable connection method proposed in this specification. In some alternative embodiments, threaded holes may also be provided in the first through hole 16 and / or the connecting hole 201, and then other threaded connecting members 15 such as screws and bolts are used to be screwed to the first through hole 16 and / or the connecting hole 201, and the detachable connection of each wiring conductive row 21 to the base 10 can also be realized.

[0053] Please refer to Figure 9 , Figure 9Schematic top view structure of the BDU module 1 provided by the embodiments of the present application. In some embodiments, along the width direction Z of the base 10, the base 10 further includes a first side and a second side that are oppositely arranged, and each wiring conductive row 21 extends from the first side to the second side. Compared with the implementation manner of only designing the power connection end on one side, in the embodiments of the present application, by extending each wiring conductive row 21 from the first side to the second side, power connection ends can be formed at both ends of the BDU module 1 in its width direction Z. Furthermore, the BDU module 1 can be compatible with battery packs with different charging / discharging interface layout positions in the width direction Z. Specifically, when the charging / discharging interface of the battery pack is located at one end of the width direction of the battery pack, the wiring end formed on one side of the BDU module 1 can adapt to the position of the charging / discharging interface at one end of the battery pack. When the charging / discharging interface of the battery pack is located at the other end of the width direction of the battery pack, the power connection end formed on the other side of the BDU module 1 can adapt to the position of the charging / discharging interface at the other end of the battery pack. In the BDU module 1 provided by the embodiments of the present application, each wiring conductive row 21 extends along the width direction Z of the base 10, so that it can adapt to the change and adjustment of the external charging / discharging interface of the battery pack along the width direction Z, and solves the problem that the BDU in the related technology cannot be compatibly applied in battery packs of different projects.

[0054] Please refer to Figure 2 and Figure 3, the BDU module 1 (or BDU 20) may further include a plurality of adapters 22 and various electrical components 23 (such as a main positive relay, a main negative relay, a pre-charge relay, a fast charge positive relay, a fast charge negative relay, etc.). The plurality of adapters 22 may include a first adapter busbar 221, a second adapter busbar 222, a third adapter busbar 223, and a fourth adapter busbar 224. Each adapter busbar may be reasonably routed according to the distribution of the electrical components 23 of the BDU. Specifically, at one end close to the positive terminal 13, one of the first adapter busbar 221 and the third adapter busbar 223 is bendably electrically connected to the positive terminal 13 and a wiring conductive busbar 21 provided at a second carrier position 121. At the other end close to the negative terminal 14, one of the second adapter busbar 222 and the fourth adapter busbar 224 is bendably electrically connected to the negative terminal 14 and a wiring conductive busbar 21 provided at another second carrier position 121. In other words, in some embodiments, the first adapter busbar 221 is bendably electrically connected between the positive terminal 13 and the first conductive busbar 211, the second adapter busbar 222 is bendably electrically connected between the negative terminal 14 and the second conductive busbar 212, the third adapter busbar 223 is electrically connected between the positive terminal 13 and the third conductive busbar 213, and the fourth adapter busbar 224 is electrically connected between the negative terminal 14 and the fourth conductive busbar 214; or, the first adapter busbar 221 is electrically connected between the positive terminal 13 and the first conductive busbar 211, the second adapter busbar 222 is electrically connected between the negative terminal 14 and the second conductive busbar 212, the third adapter busbar 223 is bendably electrically connected between the positive terminal 13 and the third conductive busbar 213, and the fourth adapter busbar 224 is bendably electrically connected between the negative terminal 14 and the fourth conductive busbar 214; or, the first adapter busbar 221 is bendably electrically connected between the positive terminal 13 and the first conductive busbar 211, the second adapter busbar 222 is electrically connected between the negative terminal 14 and the second conductive busbar 212, the third adapter busbar 223 is electrically connected between the positive terminal 13 and the third conductive busbar 213, and the fourth adapter busbar 224 is bendably electrically connected between the negative terminal 14 and the fourth conductive busbar 214; or, the first adapter busbar 221 is electrically connected between the positive terminal 13 and the first conductive busbar 211, the second adapter busbar 222 is bendably electrically connected between the negative terminal 14 and the second conductive busbar 212, the third adapter busbar 223 is bendably electrically connected between the positive terminal 13 and the third conductive busbar 213, and the fourth adapter busbar 224 is electrically connected between the negative terminal 14 and the fourth conductive busbar 214.

[0055] Please refer to Figure 3, in the description of this application, the second conductive row 212 and the third conductive row 213 are arranged on the first carrier 11, and the first conductive row 211 and the fourth conductive row 214 are arranged on the second carrier 12. That is, taking the embodiment in which the first transfer busbar 221 and the fourth transfer busbar 224 are bendably connected as an example, the specific connection method of the transfer member 22 proposed in this application is described schematically. For other arrangement methods formed by multiple wiring conductive rows 21, specific references can be made to the relevant descriptions of this embodiment. Specifically, the first transfer busbar 221, the second transfer busbar 222, the third transfer busbar 223, and the fourth transfer busbar 224 can be arranged along the surface of the electrical component 23. Some electrical components 23 of the BDU 20 may have a surface flush with the first carrying position 111. At least part of the first transfer busbar 221 can be arranged on this part of the surface of some electrical components 23, and the first transfer busbar 221 is electrically connected to at least part of the electrical components 23. Another part of the first transfer busbar 221 can be bent towards the wiring conductive row 21 (such as the first conductive row 211) arranged on the second carrier 12 and electrically connected to it. At least part of the second conductive row 212 can be arranged on the surface of some electrical components 23 and electrically connected to at least part of the electrical components 23. Another part of the second transfer busbar 222 can be bent towards the wiring conductive row 21 (such as the second conductive row 212) arranged on the second carrier 12 and electrically connected to it. Thus, the first transfer busbar 221, the second transfer busbar 222, the first conductive row 211, and the second conductive row 212 can be electrically connected to the target electrical component 23 to form at least part of the normal charge / discharge circuit. The connection method of the fourth transfer busbar 224 is similar to that of the first transfer busbar 221, and the connection method of the third transfer busbar 223 is similar to that of the second transfer busbar 222. Specific references can be made to the relevant descriptions of the connection methods of the first transfer busbar 221 and the second transfer busbar 222 respectively. In this embodiment, according to the spatial distribution of the electrical components 23, at least part of the transfer member 22 is bent and designed. One of the beneficial aspects is that it can reasonably utilize the internal space of the BDU module 1 on the premise of ensuring the realization of the target electrical function, thereby improving the structural compactness of the BDU module 1.

[0056] Please refer to Figure 2 and Figure 3, in some embodiments of the present application, the BDU module 1 may further include a battery cluster management unit 30 (Battery cluster unit, BCU). The battery cluster management unit 30 is electrically connected to the circuit of the BDU to monitor the electrical signals during the operation of the BDU and control the on / off of some electrical components 23 in real time according to the acquired electrical signals, so that the BDU can achieve various target electrical functions. The base 10 provided in the embodiments of the present application further includes a bottom side facing away from the first carrier 11 and / or the second carrier 12. The bottom side is provided with a receiving space 102. The battery cluster management unit 30 is installed in the receiving space 102. By separately arranging the battery cluster management unit 30 and the BDU 20 in the installation space 101 and the receiving space 102 of the base 10, the battery cluster management unit 30 and the BDU are integrally designed, which is beneficial to shortening the wiring harness, facilitating the electrical connection between the BDU and the BCU, reducing the difficulty of offline detection of the BDU, and reducing the occupied space.

[0057] The present application also provides a battery system, which may include: a battery module and the BDU module 1 provided in any embodiment of the present application. The battery module is electrically connected to the BDU module 1.

[0058] In summary, the BDU module and the battery system provided in the embodiments of the present application have at least the following beneficial effects: In the first aspect, through the first carrier and the second carrier, the first conductive row and the second conductive row are arranged at intervals, and any one of the first conductive row and the second conductive row can be selectively arranged on the first carrier or the second carrier, so that both the first conductive row and the second conductive row can be adjusted along the height direction of the base according to the height position of the charge / discharge interface of the battery system. Furthermore, in the case where the electrical principle is basically the same, the BDU module of the same project can be applied to the battery systems of different projects, solving the technical problem that the BDU of the same project cannot be compatibly applied in the battery packs of different projects in the related art; In the second aspect, by detachably arranging each wiring conductive row on the base, it is convenient to flexibly adjust the installation of each wiring conductive row on the base according to the position and / or quantity of the charge / discharge interface of the battery pack; Finally, by extending each wiring conductive row in the BDU module provided in the embodiments of the present application along the width direction of the base, it can adapt to the change and adjustment of the external charge / discharge interface of the battery pack along the width direction, further solving the problem that the BDU of the same project cannot be compatibly applied in the battery packs of different projects in the related art.

[0059] The above has introduced the embodiments of the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A BDU module for a battery system, the battery system comprising a battery module, characterized in that: The BDU module includes: The base comprises a first bearing platform and a second bearing platform, wherein along the height direction of the base, the first bearing platform and the second bearing platform have different heights; A plurality of wiring conductive bars, including a first conductive bar and a second conductive bar, wherein the first conductive bar is used to electrically connect the positive electrode of the battery module and the positive electrode of the external device, and the second conductive bar is used to electrically connect the negative electrode of the battery module and the negative electrode of the external device; The first conductive row and the second conductive row are arranged at intervals. One of the first carrying platform and the second carrying platform selectively carries the first conductive bar; Either the first carrying platform or the second carrying platform carries the second conductive bar.

2. The BDU module according to claim 1, characterized in that: The wiring conductive bar further includes a third conductive bar and a fourth conductive bar, wherein the third conductive bar is used to electrically connect between the positive electrode of the battery module and the positive electrode of the external device, and the fourth conductive bar is used to electrically connect between the negative electrode of the battery module and the negative electrode of the external device; Any two of the first conductive row, the second conductive row, the third conductive row and the fourth conductive row are arranged at intervals, and one of the first carrying platform and the second carrying platform selectively carries the third conductive row; Either the first carrying platform or the second carrying platform carries the fourth conductive bar.

3. The BDU module according to claim 2, characterized in that: Along the height direction of the base, the first bearing platform is higher than the second bearing platform; the first bearing platform includes two first bearing positions, the second bearing platform includes two second bearing positions, and along the length direction of the base, the two first bearing positions are located between the two second bearing positions; Along the length direction of the base, the two ends of the base are respectively provided with a positive terminal and a negative terminal, and the positive terminal, a second bearing position, two first bearing positions, another second bearing position and the negative terminal are arranged in sequence; at one end close to the positive terminal, a first bearing position carries one of the first conductive row and the third conductive row, and a second bearing position carries the other of the first conductive row and the third conductive row; at the other end close to the negative terminal, another first bearing position carries one of the second conductive row and the fourth conductive row, and another second bearing position carries the other of the second conductive row and the fourth conductive row; the first conductive row and the third conductive row are connected to the positive terminal, and the second conductive row and the fourth conductive row are connected to the negative terminal.

4. The BDU module according to claim 3, characterized in that: The first carrying platform further includes an insulating convex plate, which is disposed on the first carrying platform and between two of the first carrying positions to separate two adjacently disposed wiring conductive bars.

5. The BDU module according to any one of claims 2 to 4, characterized in that: The first conductive bar and the second conductive bar are detachably connected to one of the first supporting platform and the second supporting platform, and the third conductive bar and the fourth conductive bar are detachably connected to the other of the first supporting platform and the second supporting platform; or, The first conductive bar and the fourth conductive bar are detachably connected to one of the first supporting platform and the second supporting platform, and the second conductive bar and the third conductive bar are detachably connected to the other of the first supporting platform and the second supporting platform.

6. The BDU module according to claim 5, characterized in that: The BDU module further includes a connecting member, wherein the connecting member includes a connecting column and a connecting end provided at one end of the connecting column; The first carrying platform and / or the second carrying platform is provided with a first through hole, and a limiting structure is provided on a side of the first carrying platform and / or the second carrying platform away from the wiring conductive bar; At least part of the wiring conductive bars are provided with connection holes, the connection posts are passed through the first through holes and the connection holes, and the connection ends are clamped to the limiting structures.

7. The BDU module according to claim 6, characterized in that: The limiting structure includes a limiting edge and a limiting protrusion, the limiting edge is arranged to surround the first through hole, and the limiting protrusion is spaced apart from the limiting edge; the limiting protrusion includes a limiting end face and a guiding inclined surface, the limiting end face is arranged toward the limiting edge, and the guiding inclined surface is arranged away from the limiting end face; the guiding inclined surface is used to enable the connecting end of the connecting member to be slidably assembled along the guiding inclined surface between the limiting edge and the limiting protrusion.

8. The BDU module according to any one of claims 1 to 4, characterized in that: Along the width direction of the base, the base further includes a first side and a second side that are oppositely arranged, and each of the wiring conductive bars extends from the first side to the second side.

9. The BDU module according to claim 3 or 4, characterized in that: The BDU module further includes a plurality of adapters, wherein the plurality of adapters include a first adapter bus, a second adapter bus, a third adapter bus, and a fourth adapter bus. At one end close to the positive terminal, one of the first adapter bus and the third adapter bus can be bent and electrically connected to the positive terminal and a wiring conductive bus arranged at a second supporting position, and at the other end close to the negative terminal, one of the second adapter bus and the fourth adapter bus can be bent and electrically connected to the negative terminal and a wiring conductive bus arranged at another second supporting position.

10. A battery system, characterized in that: include: Battery module; And the BDU module according to any one of claims 1 to 9, wherein the battery module is electrically connected to the BDU module.

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