Battery module and battery pack

Abstract

The application provides a battery module and a battery pack, the battery module comprising: a first side beam and a second side beam extending along a first direction, a busbar arranged between the first side beam and the second side beam, and a first fixing support fixedly connecting the first side beam and the busbar; the first fixing support comprising a first limiting part and a first fixing part formed integrally, the first limiting part being sleeved on the periphery of the busbar, and the first fixing part being arranged on one side of the first limiting part towards a third direction and fixed on the surface of one side of the first side beam towards the third direction. In the battery module and the battery pack provided by the application, the limiting part sleeved on the periphery of the busbar can limit the busbar in the horizontal and vertical directions, and since the first fixing part is fixed on the surface of one side of the first side beam towards the third direction, the assembly and fixation of the first fixing support and the first side beam in the vertical direction can be realized, so that the assembly space is saved, the assembly efficiency is improved, and the assembly difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a battery module and battery pack. Background Technology

[0002] In recent years, with people's increasing attention to environmental protection and the rapid development of the new energy industry, power batteries have begun to be rapidly promoted from electric vehicles to rail transit, shipping, industrial docks, warehousing and transportation, household power supply and other fields.

[0003] To maximize battery energy output, most batteries today are supplied in battery packs. Battery modules within a battery pack contain numerous structural components, such as busbars. During busbar assembly, these busbars need to be secured. Currently, this is typically done by binding them with cable ties. However, this method requires allowing sufficient space for the cable ties, and the limited internal space of the battery pack makes securing the busbars difficult and reduces battery module assembly efficiency. This problem urgently needs to be solved. Summary of the Invention

[0004] The embodiments of the present invention provide a battery module and battery pack, which can improve the technical problems of difficult busbar fixing and low battery module assembly efficiency.

[0005] In a first aspect, embodiments of the present invention provide a battery module, the battery module comprising: a first side beam extending along a first direction; a second side beam extending along the first direction and located on the side of the first side beam facing a second direction, wherein the second direction is perpendicular to the first direction; a busbar disposed between the first side beam and the second side beam; and a first fixing bracket fixedly connecting the first side beam and the busbar; wherein the first fixing bracket comprises an integrally formed first limiting part and a first fixing part, the first limiting part being sleeved on the periphery of the busbar, the first fixing part being disposed on the side of the first limiting part facing a third direction, and the first fixing part being fixed on the surface of the first side beam on the side facing the third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0006] In one embodiment, the first limiting part includes: a bottom wall and a top wall arranged in parallel, and two side walls arranged in parallel, wherein the bottom wall connects to the two side walls, and the top wall connects to one of the side walls; wherein the bottom wall, the top wall, and the two side walls respectively abut against the busbar.

[0007] In one embodiment, the sidewall closest to the first side beam among the two sidewalls is connected to the first fixing part, wherein the first fixing part is parallel to the surface of the first side beam facing the third direction, and the first fixing part includes a first portion that fits onto the surface of the first side beam facing the third direction.

[0008] In one embodiment, the bus includes a first bus and a second bus, wherein the vertical projection of the first bus on the plane defined by the first direction and the third direction does not coincide with the vertical projection of the second bus on the plane defined by the first direction and the third direction.

[0009] In one embodiment, the battery module further includes: a battery pack disposed between the first side beam and the second side beam; and an information acquisition component disposed between the first side beam and the second side beam, located on the side of the battery pack facing the third direction. The information acquisition component includes: a first output electrode and a second output electrode. The first busbar is disposed between the first side beam and the battery pack, the second busbar is disposed between the first side beam and the battery pack, the first output electrode and the second output electrode are both disposed on the edge of the information acquisition component facing the first side beam, the first busbar is electrically connected to the first output electrode via a first bend, and the second busbar is electrically connected to the second output electrode via a second bend, with the first bend and the second bend extending in the third direction.

[0010] In one embodiment, the first bent portion is welded and fixed to the first busbar, and the second bent portion is welded and fixed to the second busbar.

[0011] In one embodiment, the information acquisition component further includes a signal acquisition connector disposed on the edge of the information acquisition component facing the second side beam.

[0012] In one embodiment, the battery module further includes a management system for monitoring the state of the battery pack. The management system is electrically connected to the signal acquisition connector, wherein the management system is located on the side of the battery pack near the second side beam.

[0013] In one embodiment, the battery module further includes: a second fixing bracket, the second fixing bracket being fixedly connected to the second side beam and the management system; wherein, the second fixing bracket includes a second limiting part and a second fixing part, the second fixing part being fixed on the surface of the second side beam facing the third direction, the second limiting part having an accommodating space, and the management system being disposed within the accommodating space.

[0014] Secondly, embodiments of the present invention provide a battery pack, the battery pack including at least one battery module as described in any of the preceding claims.

[0015] The beneficial effects of the embodiments of the present invention are as follows:

[0016] This invention provides a battery module and a battery pack. The battery module includes: a first side beam extending along a first direction; a second side beam extending along the first direction and located on the side of the first side beam facing a second direction, wherein the second direction is perpendicular to the first direction; a busbar disposed between the first side beam and the second side beam; and a first fixing bracket fixedly connecting the first side beam and the busbar. The first fixing bracket includes an integrally formed first limiting part and a first fixing part. The first limiting part is sleeved on the periphery of the busbar, and the first fixing part is disposed on the side of the first limiting part facing a third direction, and the first fixing part is fixed to the surface of the first side beam facing the third direction, wherein the third direction is perpendicular to both the first direction and the second direction. In the battery module and battery pack provided by this invention, the limiting part sleeved on the periphery of the busbar can limit the busbar in both the horizontal and vertical directions. Furthermore, since the first fixing part is fixed to the surface of the first side beam facing the third direction, the first fixing bracket and the first side beam can be assembled and fixed in the vertical direction, thereby saving assembly space, improving assembly efficiency, and reducing assembly difficulty. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the battery module provided in an embodiment of the present invention;

[0019] Figure 2 This is a top view schematic diagram of the battery module provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of the first fixing bracket provided in an embodiment of the present invention;

[0021] Figure 4 An assembly diagram of the first fixed bracket and the second busbar provided for an embodiment of the present invention;

[0022] Figure 5A schematic diagram showing the connection between the first bus and the first output terminal, and the second bus and the second output terminal, provided for embodiments of the present invention;

[0023] Figure 6 A schematic diagram of the structure of the second fixing bracket provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] Battery module 01; First side beam 10; First surface 11; First side 12; Busbar 20; First busbar 21; Second busbar 22; First fixing bracket 30; First limiting part 31; Bottom wall 311; Top wall 312; Side wall 313; First end 3131; First fixing part 32; First part 321; Battery pack 40; Information acquisition component 50; First output pole 51; First bending part 511; Second output pole 52; Second bending part 521; Signal acquisition connector 53; Second side beam 60; Second surface 61; Management system 70; Second fixing bracket 80; Second limiting part 81; Accommodation space 810; Bottom plate 811; Side plate 812; Second fixing part 82; Busbar connector 90; Battery pack circuit breaker unit 100; First direction X; Second direction Y; Third direction Z; Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0027] Figure 1 This is a three-dimensional schematic diagram of the battery module provided in an embodiment of the present invention; Figure 2 This is a top view schematic diagram of a battery module provided in an embodiment of the present invention. (Refer to...) Figure 1 and Figure 2As shown, in a first aspect, embodiments of the present invention provide a battery module 01, the battery module 01 comprising: a first side beam 10 extending along a first direction X; a second side beam 60 extending along the first direction X and located on the side of the first side beam 10 facing the second direction Y, wherein the second direction Y is perpendicular to the first direction X; a busbar 20 disposed between the first side beam 10 and the second side beam 60; and a first fixing bracket 30 fixedly connecting the first side beam 10 and the busbar 20; wherein the first fixing bracket 30 includes an integrally formed first limiting part 31 and a first fixing part 32, the first limiting part 31 being sleeved on the periphery of the busbar 20, the first fixing part 32 being disposed on the side of the first limiting part 31 facing a third direction Z, and the first fixing part 32 being fixed to the surface of the first side beam 10 facing the third direction Z, wherein the third direction Z is perpendicular to the first direction X and the second direction Y.

[0028] Specifically, the first direction X and the second direction Y are the transverse direction (or horizontal direction), the third direction Z is the longitudinal direction (or vertical direction), the surface of the first side beam 10 facing the third direction Z is the first surface 11, and the plane defined by the first direction X and the third direction Z is the first side surface 12.

[0029] In the battery module 01 provided by the present invention, the limiting part sleeved around the busbar 20 can limit the busbar 20 in the horizontal and vertical directions, thereby ensuring the fixing effect of the busbar 20, preventing the busbar 20 from shifting in the horizontal and vertical directions, and improving the safety performance of the battery module 01. Furthermore, since the first fixing part 32 is disposed on the side of the first limiting part 31 facing the third direction Z, and the first fixing part 32 is fixed to the surface of the first side beam 10 facing the third direction Z, the first fixing bracket 30 and the first side beam 10 can be assembled and fixed in the vertical direction, ensuring the fixing effect while saving assembly space, improving assembly efficiency, and reducing assembly difficulty.

[0030] Figure 3 A schematic diagram of the structure of the first fixing bracket provided in an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the assembly of the first fixing bracket and the second busbar according to an embodiment of the present invention. (In conjunction with...) Figures 1-4As shown, in some embodiments of the present invention, the first limiting part 31 includes: a bottom wall 311 and a top wall 312 arranged in parallel, and two side walls 313 arranged in parallel. The bottom wall 311 connects the two side walls 313, and the top wall 312 connects one of the side walls 313. The bottom wall 311, the top wall 312, and the two side walls 313 respectively abut against the busbar 20.

[0031] In the battery module 01 provided by the present invention, since the bottom wall 311 and the top wall 312 of the first limiting part 31 abut against the busbar 20, the busbar 20 can be limited in the longitudinal direction; since the two side walls 313 of the first limiting part 31 abut against the busbar 20, the busbar 20 can be limited in the transverse direction.

[0032] Furthermore, since the top wall 312 is connected to one of the side walls 313, that is, the top wall 312 is not connected to the other side wall 313, an opening can be formed between the top wall 312 and the unconnected side wall 313. This opening can be enlarged manually or mechanically to facilitate the installation of the busbar 20. Optionally, the side wall 313 connected to the top wall 312 can rotate relative to the side wall 313 to increase the opening. Optionally, the side wall 313 not connected to the top wall 312 is provided with a locking part (not shown in the figure), which is used to ensure the relative fixation between the top wall 312 and the unconnected side wall 313 after the busbar 20 is installed.

[0033] Further, the two sidewalls 313 are defined here as the first sidewall and the second sidewall, wherein the top wall 312 is connected to the first sidewall but not to the second sidewall, and the vertical projection of the top wall 312 on the plane where the first sidewall 12 is located does not overlap with the vertical projection of the second sidewall on the plane where the first sidewall 12 is located.

[0034] In the battery module 01 provided by the present invention, since the vertical projection of the top wall 312 on the plane where the first side wall 12 is located does not overlap with the vertical projection of the second side wall on the plane where the first side wall 12 is located, the top wall 312 and the second side wall are misaligned in a direction perpendicular to the plane where the first side wall 12 is located. This ensures that when the opening between the top wall 312 and the second side wall is adjusted manually or mechanically, there will be no interference between the top wall 312 and the second side wall. This makes it easier to enlarge the opening and improves the assembly efficiency of the battery module 01.

[0035] In some embodiments of the present invention, the first fixing bracket 30 can be formed by multiple bending processes using sheet metal technology to form the bottom wall 311 and top wall 312 of the first fixing part 32 and the first limiting part 31, as well as two opposing side walls 313. Optionally, the side wall 313 furthest from the first side beam 10 among the two side walls 313 is connected to the top wall 312; the side wall 313 closest to the first side beam 10 among the two side walls 313 has an opening with the top wall 312 and is connected to the first fixing part 32. It should be noted that the present invention does not limit the forming process of the first fixing bracket 30. In other embodiments of the present invention, the first fixing bracket 30 can also be formed by injection molding.

[0036] It should be noted that, in other embodiments of the present invention, the top wall 312 may also be connected to the two side walls 313 respectively, so that the bottom wall 311, the top wall 312, and the two side walls 313 form a closed structure. The assembly process corresponding to this structure is as follows: first, the first limiting part 31 in the first fixing bracket 30 is sleeved on the periphery of the busbar 20, then the busbar 20 is assembled into the battery module 01, and then the first fixing part 32 in the first fixing bracket 30 is fixed on the first surface 11 of the first side beam 10.

[0037] In some embodiments of the present invention, the side wall 313 closest to the first side beam among the two side walls 313 is connected to the first fixing part 32, wherein the first fixing part 32 is parallel to the surface of the first side beam 10 facing the third direction Z (i.e., the first surface 11), and the first fixing part 32 includes a first portion 321 that fits against the surface of the first side beam 10 facing the third direction Z.

[0038] In the battery module 01 provided by the present invention, since the side wall 313 closest to the first side beam among the two side walls 313 is connected to the first fixing part 32, the extension length of the first fixing part 32 can be shortened, saving materials; and since the first fixing part 32 is parallel to the surface of the first side beam 10 facing the third direction Z, and the first part 321 of the first fixing part 32 is closely fitted to the surface of the first side beam 10 facing the third direction Z, the assembly stability of the first fixing part 32 and the first surface 11 is further improved.

[0039] For example, in this embodiment, the first fixing part 32 includes a first portion 321 that is in contact with the first surface 11, and other portions that are not in contact with the first surface 11. In this case, the side wall 313 closest to the first side beam 10 among the two side walls 313 is spaced apart from the first side beam 10. Of course, in other embodiments of this application, the side wall 313 closest to the first side beam 10 among the two side walls 313 can be in contact with the first side beam 10 to maximize the area of ​​the first portion 321 and further improve the assembly stability of the first fixing part 32.

[0040] Optionally, the first fixing part 32 is provided with a through hole, and the first fixing part 32 is fixedly connected to the first side beam 10 by welding, threaded connection, or riveting. Of course, the present invention does not limit the fixing connection method between the first fixing part 32 and the first side beam 10. In other embodiments of the present invention, the first fixing part 32 and the first side beam 10 can also be fixedly connected by other fixing methods such as snap-fit ​​fixing.

[0041] Figure 5 This is a schematic diagram showing the connection between the first bus and the first output terminal, and the second bus and the second output terminal, provided for embodiments of the present invention. (In conjunction with...) Figures 1-5 As shown, in some embodiments of the present invention, the busbar 20 includes a first busbar 21 and a second busbar 22. The first busbar 21 is fixedly connected to the first side beam 10 through at least one first fixing bracket 30; the second busbar 22 is fixedly connected to the first side beam 10 through at least one first fixing bracket 30.

[0042] In some embodiments of the present invention, the vertical projection of the first busbar 21 onto the plane defined by the first direction X and the third direction Z does not coincide with the vertical projection of the second busbar 22 onto the plane defined by the first direction X and the third direction Z. That is, the orthographic projections of the first busbar 21 and the second busbar 22 onto the plane where the first side 12 is located are misaligned.

[0043] In the battery module 01 provided by the present invention, since the first busbar 21 and the second busbar 22 are misaligned in their orthogonal projections on the plane where the first side 12 is located, the first busbar 21 and the second busbar 22 will not cause structural interference when they are fixedly connected to the first side beam 10, and can be fixedly connected to the first side beam 10 simultaneously, which is beneficial to improving assembly efficiency.

[0044] In some embodiments of the present invention, the battery module 01 further includes: a battery pack 40 and an information acquisition component 50, wherein the battery pack 40 includes a plurality of battery cells, the battery pack 40 is disposed between the first side beam 10 and the second side beam 60, and is located on the side of the busbar 20 away from the first side beam 10, and the vertical projection of the busbar 20 on the first side 12 overlaps with the vertical projection of the battery pack 40 on the first side 12; the information acquisition component 50 is disposed between the first side beam 10 and the second side beam 60, and is located on the side of the battery pack 40 facing the third direction Z, the information acquisition component 50 includes: a series busbar of a plurality of battery cells connected in series, a parallel busbar of a plurality of battery cells connected in parallel, an information acquisition device for acquiring battery cell voltage and temperature information, and a first output electrode 51 and a second output electrode 52, one of the first output electrode 51 and the second output electrode 52 being a positive output electrode, and the other of the first output electrode 51 and the second output electrode 52 being a negative output electrode.

[0045] The first busbar 21 is located between the battery pack 40 and the first side beam 10, and the second busbar 22 is located between the battery pack 40 and the first side beam 10. The first output pole 51 and the second output pole 52 are both located on the edge of the information acquisition component 50 facing the first side beam 10. That is, the first output pole 51 and the second output pole 52 are located on the same side, so that the connection structure connecting the first output pole 51 and the first busbar 21 is located on the same side as the connection structure connecting the second output pole 52 and the second busbar 22, which simplifies the assembly structure of the battery module 01 and improves the assembly efficiency.

[0046] Furthermore, the connection structure connecting the first output electrode 51 and the first bus 21 is a first bend 511, and the connection structure connecting the second output electrode 52 and the second bus 22 is a second bend 521. The first bus 21 is electrically connected to the first output electrode 51 through the first bend 511, and the second bus 22 is electrically connected to the second output electrode 52 through the second bend 521. The extension direction of the first bend 511 and the second bend 521 is the third direction Z.

[0047] In the battery module 01 provided by the present invention, since the extension direction of the first bending portion 511 and the second bending portion 521 is the third direction Z, that is, the first bending portion 511 and the second bending portion 521 extend in the longitudinal direction and their height is not higher than the surface of the information acquisition component 50 on the side away from the battery pack 40, the first bending portion 511 and the second bending portion 521 can utilize the existing space in the longitudinal direction to complete the electrical connection between the first output electrode 51 and the first busbar 21 and the second output electrode 52 and the second busbar 22, thereby improving the space utilization rate of the battery module 01.

[0048] In some embodiments of the present invention, in the direction of the information acquisition component 50 toward the battery pack 40, the first bent portion 511 and the second bent portion 521 have the same extension length.

[0049] In the battery module 01 provided by the present invention, since the first bending portion 511 and the second bending portion 521 have the same extension length, the first bending portion 511 and the second bending portion 521 can be manufactured with the same specifications, which facilitates the manufacturing of the information acquisition component 50 and helps to reduce production and manufacturing costs.

[0050] In some embodiments of the present invention, the first bent portion 511 is welded and fixed to the first busbar 21 and integrally formed with the first output electrode 51; the second bent portion 521 is welded and fixed to the second busbar 22 and integrally formed with the second output electrode 52.

[0051] In the battery module 01 provided by the present invention, since the first bent portion 511 is welded and fixed to the first busbar 21, and the second bent portion 521 is welded and fixed to the second busbar 22, the problem of increased assembly parts caused by bolt and rivet fixing can be avoided, thereby improving assembly efficiency.

[0052] Furthermore, since the vertical projection of the first busbar 21 onto the plane defined by the first direction X and the third direction Z does not coincide with the vertical projection of the second busbar 22 onto the plane defined by the first direction X and the third direction Z, the welding points of the first bent portion 511 and the first busbar 21, and the welding points of the second bent portion 521 and the second busbar 22, do not overlap. This allows for simultaneous welding and fixing of the first bent portion 511 and the first busbar 21, as well as the second bent portion 521 and the second busbar 22, further improving assembly efficiency.

[0053] In some embodiments of the present invention, the information acquisition component 50 further includes a signal acquisition connector 53, which is disposed on the edge of the information acquisition component 50 facing the second side beam 60.

[0054] In the battery module 01 provided by the present invention, the signal output by the signal acquisition connector 53 is a low-voltage signal; while the signals output by the first output pole 51 and the second output pole 52 are high-voltage signals. By setting the signal acquisition connector 53 on the edge of the information acquisition component 50 facing the second side beam 60, the present invention enables the signal acquisition connector 53 and the first output pole 51 and the second output pole 52 to be located on different sides of the information acquisition component 50, thereby separating the high-voltage high-current circuit and the low-voltage low-current circuit in the battery module 01 and improving the electrical safety of the battery module 01.

[0055] In some embodiments of the present invention, the battery module 01 further includes a management system 70, which is used to monitor the state of the battery pack 40. The management system 70 is electrically connected to the signal acquisition connector 53, wherein the management system 70 is disposed on the side of the battery pack 40 facing the second side beam 60.

[0056] In the battery module 01 provided by the present invention, the management system 70 and the signal acquisition connector 53 are electrically connected by a wire harness. Since the management system 70 is located between the battery pack 40 and the second side beam 60, the management system 70 can be installed in the gap area between the second side beam 60 and the battery pack 40, thereby improving the space utilization rate of the battery module 01.

[0057] Furthermore, since the management system 70 is located on the side of the battery pack 40 facing the second side beam 60, and the signal acquisition connector 53 is located on the edge of the information acquisition component 50 facing the second side beam 60, the distance between the management system 70 and the signal acquisition connector 53 can be greatly shortened, the length of the wiring harness can be shortened, space in the battery module 01 can be saved, and the wiring difficulty and production cost can be reduced.

[0058] Figure 6 A schematic diagram of the structure of the second fixing bracket provided in an embodiment of the present invention. (In conjunction with...) Figures 1-6As shown, in some embodiments of the present invention, the second side beam 60 includes a second surface 61, which is the surface of the second side beam 60 facing the third direction Z. The second surface 61 is parallel to the first surface 11. The battery module 01 further includes a second fixing bracket 80, which fixes the second side beam 60 and the management system 70. The second fixing bracket 80 includes a second limiting part 81 and a second fixing part 82. The second limiting part 81 has an accommodating space 810, and the management system 70 is disposed in the accommodating space 810. The second fixing part 82 fixes the surface of the second side beam 60 facing the third direction Z.

[0059] In the battery module 01 provided by the present invention, the second fixing bracket 80 limits the management system 70 by the second limiting part 81, and keeps the management system 70 and the second side beam 60 relatively fixed by the second fixing part 82. Since the second fixing part 82 is fixed on the second surface 61 parallel to the first surface 11, the second fixing bracket 80 can be fixed in the longitudinal direction when assembled with the second side beam 60, which saves assembly space, improves assembly efficiency, and reduces assembly difficulty while ensuring the fixing effect.

[0060] Optionally, the first surface 11 and the second surface 61 are coplanar. This arrangement allows the top surface heights of the first side beam 10 and the second side beam 60 to be consistent, which helps to reduce the variation of component structural parameters and improve assembly efficiency.

[0061] In some embodiments of the present invention, the second limiting part 81 includes a base plate 811 and two side plates 812 disposed on the base plate 811. The base plate 811 and the two side plates 812 form a semi-open accommodating space 810. The connection port of the management system 70 and the wire harness is located on the side of the management system 70 away from the base plate 811.

[0062] Optionally, the side plate 812 closest to the second side beam 60 among the two side plates 812 includes a second end flush with the second surface 61, and the second fixing part 82 extends from the second end toward the second side beam 60 and includes a second part that fits against the second surface 61.

[0063] In the battery module 01 provided by the present invention, since the second end of the side plate 812 closest to the second side beam 60 is flush with the second surface 61, the second fixing part 82 extending from the second end to the second side beam 60 can be tightly fitted with the second surface 61, thereby further improving the assembly stability of the second fixing part 82 and the second surface 61.

[0064] In some embodiments of the present invention, the battery module 01 further includes a bus connector 90, one end of the first bus 21 and the second bus 22 are electrically connected to the bus connector 90, the other end of the first bus 21 is electrically connected to the first output terminal 51, and the other end of the second bus 22 is electrically connected to the second output terminal 52.

[0065] In some embodiments of the present invention, the battery module 01 further includes a battery disconnect unit (BDU), which is disposed between the bus connector 90 and the first bus 21 and the second bus 22, and is used to control the circuit connection and disconnection between the bus connector 90 and the first bus 21 and the second bus 22.

[0066] Since the voltage signals output by the first busbar 21 and the second busbar 22 are high-voltage signals, there is a certain safety risk during use. The battery pack circuit breaker unit 100 can disconnect the connection between the busbar connector 90 and the first busbar 21 and the second busbar 22 in a timely manner when needed, thereby ensuring the safety of the battery module 01.

[0067] In a second aspect, the present invention also provides a battery pack, the battery pack comprising at least one battery module 01 as described in any of the preceding claims.

[0068] Furthermore, the battery pack also includes a battery box, wherein the first side beam 10 and the second side beam 60 in the battery module 01 are fitted to the inner wall of the battery box.

[0069] In summary, the present invention provides a battery module and a battery pack. The battery module includes: a first side beam extending along a first direction; a second side beam extending along the first direction and located on the side of the first side beam facing a second direction, wherein the second direction is perpendicular to the first direction; a busbar disposed between the first side beam and the second side beam; and a first fixing bracket fixedly connecting the first side beam and the busbar. The first fixing bracket includes an integrally formed first limiting part and a first fixing part. The first limiting part is sleeved around the busbar, and the first fixing part is disposed on the side of the first limiting part facing a third direction, and the first fixing part is fixed to the surface of the first side beam facing a third direction, wherein the third direction is perpendicular to the first and second directions. In the battery module and battery pack provided by the present invention, the limiting part sleeved around the busbar can limit the busbar in both the horizontal and vertical directions. Furthermore, since the first fixing part is fixed to the surface of the first side beam facing a third direction, the first fixing bracket and the first side beam can be assembled and fixed in the vertical direction, thereby saving assembly space, improving assembly efficiency, and reducing assembly difficulty.

[0070] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery module, characterized by, The battery module includes: The first side beam extends along the first direction; The second side beam extends along the first direction and is located on the side of the first side beam facing the second direction, wherein the second direction is perpendicular to the first direction; A busbar is disposed between the first side beam and the second side beam; The battery pack is disposed between the first side beam and the second side beam, and is located on the side of the busbar away from the first side beam; The first fixed bracket is fixedly connected to the first side beam and the busbar; The first fixed bracket includes an integrally formed first limiting part and a first fixing part. The first limiting part is sleeved on the periphery of the busbar, and the first fixing part is disposed on the side of the first limiting part facing the third direction. The first fixing part is fixed on the surface of the first side beam facing the third direction, wherein the third direction is perpendicular to the first direction and the second direction. The first limiting part includes: a bottom wall and a top wall arranged in parallel, and two side walls arranged in parallel, wherein the bottom wall connects the two side walls, and the top wall connects to one of the side walls; The bottom wall, the top wall, and the two side walls respectively abut against the busbar; The plane defined by the first direction and the third direction is the first side surface. The vertical projection of the top wall on the plane of the first side surface does not overlap with the vertical projection of the side wall not connected to the top wall on the plane of the first side surface.

2. The battery module of claim 1, wherein, The sidewall closest to the first side beam among the two sidewalls is connected to the first fixing part, wherein the first fixing part is parallel to the surface of the first side beam facing the third direction, and the first fixing part includes a first portion that fits onto the surface of the first side beam facing the third direction.

3. The battery module of claim 1, wherein, The busbar includes a first busbar and a second busbar. The vertical projection of the first busbar onto the plane defined by the first direction and the third direction does not coincide with the vertical projection of the second busbar onto the plane defined by the first direction and the third direction.

4. The battery module of claim 3, wherein, The battery module also includes: An information acquisition component is disposed between the first side beam and the second side beam, and located on the side of the battery pack facing the third direction. The information acquisition component includes: a first output pole and a second output pole. The first busbar is disposed between the first side beam and the battery pack, the second busbar is disposed between the first side beam and the battery pack, the first output electrode and the second output electrode are both disposed on the edge of the information acquisition component facing the first side beam, the first busbar is electrically connected to the first output electrode through a first bend, the second busbar is electrically connected to the second output electrode through a second bend, and the extension direction of the first bend and the second bend is the third direction.

5. The battery module of claim 4, wherein, The first bent portion is welded and fixed to the first busbar, and the second bent portion is welded and fixed to the second busbar.

6. The battery module of claim 4, wherein, The information acquisition component further includes a signal acquisition connector, which is disposed on the edge of the information acquisition component facing the second side beam.

7. The battery module of claim 6, wherein, The battery module further includes a management system for monitoring the status of the battery pack. The management system is electrically connected to the signal acquisition connector, and the management system is located on the side of the battery pack near the second side beam.

8. The battery module of claim 7, wherein, The battery module further includes: a second fixing bracket, which is fixedly connected to the second side beam and the management system; The second fixed bracket includes a second limiting part and a second fixing part. The second fixing part is fixed on the surface of the second side beam facing the third direction. The second limiting part has an accommodating space, and the management system is disposed in the accommodating space.

9. A battery pack, characterized by, The battery pack includes the battery module as described in any one of claims 1-8.

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