CN220984762U

CN220984762U - Battery pack

Info

Publication number: CN220984762U
Application number: CN202322547024.6U
Authority: CN
Inventors: 许杰城; 吉志宽; 方俊峰; 李�杰; 赵文斌
Original assignee: Zhuhai Cosmx Power Co Ltd
Current assignee: Zhuhai Cosmx Power Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-17
Anticipated expiration: 2033-09-19

Abstract

The application provides a battery pack, which comprises a bottom plate and a plurality of side plates, wherein the side plates and the bottom plate are jointly enclosed to form a containing cavity; the bearing beam structure is arranged in the accommodating cavity and is respectively connected with the bottom plate and the side plate of the battery box; the battery module is connected with the bearing beam structure; the electric control assembly is electrically connected with the battery module and is connected with the bearing beam structure; and the electric control assembly is positioned outside the projection of the battery module on the bearing beam structure on the orthographic projection of the plane where the bottom plate is positioned. So set up, can strengthen the bearing capacity of battery box bottom through the carrier bar structure, promoted the bulk strength, the bearing capacity of battery box, automatically controlled subassembly and battery module all independent connection are on the carrier bar structure moreover to it is fixed for the battery box position, be favorable to promoting the structural integrity of battery package, be favorable to overhauling the maintenance to the circuit.

Description

Battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack.

Background

When the battery is used as energy power to be applied to a use scene, a plurality of battery modules are generally integrally installed in a battery box, and the battery box plays a role in protecting the internal battery modules and is convenient for the installation, replacement and maintenance of the battery modules.

In the battery box, the bottom of the box body is a main bearing part due to the integration of the battery module, and the structural strength of the battery box is very important. The bottom of the battery box in the prior art is of a single-plate structure, if the bottom is deformed, the arrangement position of the battery module is directly affected, and the battery module is separated from the original position to cause the other related electric conduction structures to be broken, so that the battery is invalid, potential safety hazards occur and the like.

Disclosure of utility model

In view of the above, the application provides a battery pack, which can solve the problem that the case body of the battery case is easy to deform in the prior art.

In order to achieve the above purpose, the present application provides the following technical solutions:

A battery pack, comprising:

The battery box comprises a bottom plate and a plurality of side plates arranged on the periphery of the bottom plate, and the side plates and the bottom plate are jointly enclosed to form a containing cavity;

The bearing beam structure is arranged in the accommodating cavity and is respectively connected with the bottom plate and the side plate of the battery box;

the battery module is connected with the bearing beam structure;

The electric control assembly is electrically connected with the battery module and is connected with the bearing beam structure;

And the electric control assembly is positioned outside the projection of the battery module on the bearing beam structure on the orthographic projection of the plane where the bottom plate is positioned.

Optionally, the method further comprises:

The first liquid cooling plate is connected with the bearing beam structure;

The liquid cooling plate is located between the bearing beam structure and the battery module.

Optionally, a first positioning structure and/or a second positioning structure are arranged on the bearing beam structure, the first liquid cooling plate is fixed on the bearing beam structure through the first positioning structure, and the battery module is fixed on the bearing beam structure through the second positioning structure.

Optionally, the carrier beam structure includes a plurality of side beams that connect respectively on a plurality of curb plate, at least one of a plurality of side beams is provided with first location structure, first location structure includes the bar boss, the bar boss with the side looks butt of first liquid cooling board.

Optionally, the second positioning structure comprises a positioning column arranged on the table top of the strip-shaped boss, and the battery module is fixed on the table top of the strip-shaped boss.

Optionally, the strip boss is protruding in the middle part of side roof beam and along the extension direction of side roof beam extends, just the automatically controlled subassembly with first liquid cooling board is located respectively the both sides of strip boss.

Optionally, the electric control assembly comprises a plurality of electric control elements connected with the side beams, and strip-shaped pits are arranged on the side beams and are positioned between two adjacent electric control elements.

Optionally, the method comprises:

the liquid cooling pipeline assembly is communicated with the first liquid cooling plate;

The liquid cooling pipeline assembly is located outside the projection of the battery module on the bearing beam structure on the orthographic projection of the plane where the bottom plate is located, and the liquid cooling pipeline assembly and the electric control assembly are located on two sides of the battery module respectively.

Optionally, the method further comprises:

The second liquid cooling plate is positioned on the other side of the battery module, which is far away from the first liquid cooling plate, and the second liquid cooling plate is fixedly connected with the battery module.

Optionally, two battery modules are provided and are arranged along a direction perpendicular to the stacking direction of the battery cells.

According to the battery pack provided by the application, the bearing beam structure is arranged at the bottom of the battery box, and meanwhile, the bearing beam structure is connected with the side wall of the battery box, so that the bottom of the battery box can be reinforced through the design of the bearing beam structure, and the bearing capacity of the bottom of the battery box is improved. The battery module is connected with the electric control assembly to realize the control to the battery module, battery module and electric control assembly are all connected on the carrier bar structure, can promote the connection reliability of battery module and electric control assembly, promote structural strength. And the electric control assembly is positioned outside the projection of the battery module on the bearing beam structure, so that the projection of the electric control assembly and the projection of the battery module on the bearing beam structure are not overlapped, the connection of the electric control assembly and the battery module is relatively independent, the mutual interference of the electric control assembly and the battery module can be avoided, and the circuit is favorably overhauled and maintained.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first internal block diagram of a battery box shown in some embodiments;

FIG. 2 is a second internal block diagram of the battery box shown in some embodiments;

FIG. 3 is a mounting block diagram of a loadbeam structure shown in some embodiments;

FIG. 4 is a split block diagram of a loadbeam structure shown in some embodiments;

FIG. 5 is a block diagram of a first liquid cooling plate and a second liquid cooling plate shown in some embodiments;

fig. 6 is a first structural view of a battery module shown in some embodiments;

fig. 7 is a second structure diagram of a battery module shown in some embodiments;

Fig. 8 is a block diagram of a first side rail shown in some embodiments.

In the figure: 1. a battery box; 21. a first side rail; 211. a strip-shaped boss; 212. a strip-shaped pit; 213. folding edges; 22. a second side rail; 23. a third side rail; 24. a fourth side rail; 25. a cross beam; 26. a longitudinal beam; 3. a first liquid-cooled cold plate; 4. a battery module; 41. a side plate; 42. a top plate; 43. a bottom plate; 44. a spacer; 45. a collection plate; 46. nickel flakes; 5. a second liquid cooling plate; 61. a communication interface; 62. a charge-discharge interface; 63. BMS board; 64. a fuse; 65. a relay; 66. a shunt; 71. a liquid cooling interface; 72. a liquid inlet pipeline; 73. a liquid outlet pipeline; 8. an explosion-proof valve.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 8, an embodiment of the present application provides a battery pack including a battery box 1, a load beam structure, an electric control assembly, and a battery module 4.

The bearing beam structure, the electric control assembly and the battery module 4 are all arranged in the battery box 1, the battery box 1 plays a bearing role, and particularly, the battery box 1 is provided with a lower box body and a cover body, and the opening of the lower box body is covered by the cover body so as to seal the lower box body. The battery box comprises a bottom plate and a plurality of side plates, the plurality of side plates are arranged around the bottom plate and are sequentially connected, and the bottom plate and the plurality of side plates enclose together to form a containing cavity.

The carrier beam structure sets up in the holding chamber of battery case 1, and the carrier beam structure is connected with the bottom plate and the curb plate of battery case 1 simultaneously, through the design of carrier beam structure, can strengthen the bottom of battery case 1, promotes the bearing capacity of the bottom of battery case 1, and specifically, the carrier beam structure sets up to frame construction, and the side of carrier beam structure is connected with lateral wall (curb plate) of battery case 1, and the lower part of carrier beam structure is connected with the diapire (bottom plate) of battery case 1.

The battery module is electrically connected with the electric control assembly to control the battery module, for example, the electric control assembly is arranged as a charging and discharging assembly and a communication assembly to realize the charging and discharging and communication functions of the battery module. The battery module and the electric control assembly are connected to the bearing beam structure, so that the connection reliability of the battery module and the electric control assembly can be improved, and the structural strength is improved. Moreover, on the orthographic projection of the plane of the bottom plate, the electric control assembly is positioned outside the projection of the battery module on the bearing beam structure, so that the projection of the electric control assembly and the battery module on the bearing beam structure (namely, the orthographic projection of the bottom plate on the plane of the bottom plate) are not overlapped, the connection of the electric control assembly and the battery module is relatively independent, the mutual interference of the electric control assembly and the battery module can be avoided, and the electric control assembly and the battery module are favorable for overhauling and maintaining a circuit.

The arrangement can strengthen the bearing capacity of the bottom of the battery box 1 through the bearing beam structure, thereby reducing the risk of failure caused by the influence of external factors such as vibration, impact and the like, improving the overall strength and bearing capacity of the battery box 1 and solving the problem that the box body of the battery box 1 is easy to deform in the prior art; and the electric control assembly and the battery module 4 are all independently connected on the bearing beam structure and fixed relative to the position of the battery box 1, so that the structural integrity of the battery pack is improved, and the circuit is overhauled and maintained.

In this scheme, automatically controlled subassembly includes charge-discharge module and communication module, the battery box has relative first lateral wall and second lateral wall (two relative in the polylith curb plate promptly), be provided with communication interface 61 and charge-discharge interface 62 on the first lateral wall of battery box 1, communication interface 61 passes through communication module (specifically including BMS board 63 and connecting wire etc.) and is connected with battery module 4 electricity, charge-discharge interface 62 passes through charge-discharge module (specifically including fuse 64, insulator, relay 65, shunt 66 and connecting wire etc.) and is connected with battery module 4 electricity, communication module and charge-discharge module integration set up between first lateral wall and battery module 4. Thus, by integrating the circuit components (the communication component and the charge-discharge component) in the space region between the first side wall and the battery module 4, the circuit is favorably overhauled and maintained, and the mutual influence between the circuit components and the battery module 4 is avoided.

Specifically, the battery module 4 comprises a battery cell group, a confluence piece and a collection piece, wherein the battery cell group is provided with a plurality of battery cells which are arranged in a stacked manner; the current collecting piece is positioned at the lug side of the battery cell group and is electrically connected with the lug of the battery cell and the charging and discharging assembly, specifically, the current collecting piece comprises a plurality of nickel sheets 46 and copper bars, the nickel sheets 46 are electrically connected with the lugs of two adjacent battery cells, and the copper bars are connected with the lugs of the battery cells at the end parts and the charging and discharging assembly; the collection piece is located the utmost point ear side of electric core group to the utmost point ear and the communication module of electricity connection electric core, specifically, the collection piece sets up to collection board 45, and collection board 45 is connected with the utmost point ear of a plurality of electric cores, and the one end of collection board 45 is buckled and is set up and laminating in curb plate 41 one side of keeping away from electric core group, and is connected with the communication module electricity.

In some embodiments, this battery package includes first liquid cooling board 3, first liquid cooling board 3 sets up between carrier bar structure and battery module 4 to be connected with carrier bar structure, in order to make first liquid cooling board 3 carry out cooling to battery module 4, still can strengthen the structural strength of carrier bar structure, further promote the bearing capacity of battery case 1 bottom, and then reduce the risk of inefficacy because of external factors such as vibration, impact influence, promoted the bulk strength, the bearing capacity of battery case 1, the problem of the box yielding of battery case 1 among the prior art is solved.

The battery module 4 is connected on the load beam structure to make the load beam structure, the first liquid cooling plate 3 and the battery module 4 connect into an organic whole, and for battery case 1 fixed in position, be favorable to guaranteeing battery case 1 inner structure's wholeness, and then promote the structural integrity of battery package, avoid rocking the skew because of the structure and cause quality and poor problem of stability.

The arrangement can further strengthen the bearing capacity of the bottom of the battery box 1 through the first liquid cooling plate 3 and the bearing beam structure, so that the risk of failure due to the influence of external factors such as vibration, impact and the like is reduced, the overall strength and bearing capacity of the battery box 1 are improved, and the problem that the box body of the battery box 1 is easy to deform in the prior art is solved; and the bearing beam structure, the first liquid cooling plate 3 and the battery module 4 are integrally connected and fixed relative to the position of the battery box 1, so that the structural integrity of the battery pack is improved.

In this scheme, first liquid cooling board is connected with liquid cooling pipeline subassembly, wherein, on the planar orthographic projection that the bottom plate is located, liquid cooling pipeline subassembly is in outside the projection of battery module on the carrier beam structure, and liquid cooling pipeline subassembly and automatically controlled subassembly are located the both sides of battery module respectively, so that liquid cooling subassembly and automatically controlled subassembly set up respectively at the two opposite lateral walls of battery module 4, because the coolant temperature is lower, form condensation phenomenon easily on liquid cooling subassembly, set up liquid cooling subassembly and automatically controlled subassembly separately, can avoid liquid cooling subassembly and automatically controlled subassembly to influence each other, be favorable to guaranteeing the safety and stability of circuit.

Specifically, a liquid cooling interface 71 is disposed on the second side wall of the battery box 1, and the liquid cooling interface 71 is connected with the first liquid cooling plate 3 through a liquid cooling pipeline assembly (specifically including a liquid inlet pipeline 72, a liquid outlet pipeline 73, a control valve and the like), and the liquid cooling pipeline assembly is integrally disposed between the second side wall and the battery module 4.

The battery box 1 is provided with a third side wall and a fourth side wall which are oppositely arranged, and the third side wall and/or the fourth side wall are/is provided with the explosion-proof valve 8, so that the explosion-proof valve 8, the electric control component and the liquid cooling component are respectively located on three different sides of the battery module 4, mutual interference of the three is avoided, and the explosion-proof valve 8 corresponds to the lug side of the battery module 4, thereby being beneficial to improving the pressure relief efficiency.

The battery pack further comprises a second liquid cooling plate 5, wherein the second liquid cooling plate 5 is located at one side, far away from the first liquid cooling plate 3, of the battery module 4 and is connected with the battery module 4, so that the first liquid cooling plate 3 and the second liquid cooling plate 5 are located at two sides of the battery module 4 respectively, a double-layer liquid cooling structure is formed, the battery pack has larger heat exchange area and more uniform temperature distribution, heat dissipation performance is better, and the temperature imbalance phenomenon of the battery module 4 can be reduced.

Wherein, one side that second liquid cooling board 5 kept away from battery module 4 is provided with the flexible piece, and second liquid cooling board 5 passes through the flexible piece and contacts with battery box 1. Like this, when the lid is connected with lower box, through the flexible part flexible contact between lid and the second liquid cooling board 5, both can prevent to take place hard collision between second liquid cooling board 5 and the lid, can provide the pretightning force again, make to connect between second liquid cooling board 5 and the battery module 4 inseparabler, and then promote the structural integrity and the performance stability of battery package. Specifically, the flexible member is provided as foam and is adhered to the second liquid cooling plate 5.

In some embodiments, be provided with first location structure on the carrier bar structure, first liquid cooling board 3 fixes on the carrier bar structure through first location structure location, in the assembly process, can fix a position first liquid cooling board 3 and carrier bar structure through first location structure earlier, connect first liquid cooling board 3 and carrier bar structure again, first liquid cooling board 3 and carrier bar structure take place to rock or dislocation when can avoiding connecting, is favorable to promoting assembly efficiency and assembly quality.

The bearing beam structure is provided with a second positioning structure, the battery module 4 is fixed on the bearing beam structure through the second positioning structure, in the assembly process, the battery module 4 and the bearing beam structure can be positioned through the second positioning structure, the battery module 4 and the bearing beam structure are connected, the battery module 4 and the bearing beam structure can be prevented from shaking or misplacement during connection, and the assembly efficiency and the assembly quality are improved.

Specifically, the first positioning structure and the second positioning structure may be set in the form of positioning columns, where the positioning columns protrude from the carrier beam structure and can be penetrated and positioned in the first liquid cooling plate 3 or the battery module 4 (correspondingly, positioning holes matched with the positioning columns are provided on the first liquid cooling plate 3 and the battery module 4, and the positioning columns are penetrated and positioned in the positioning holes), so as to form the positioning of the carrier beam structure and the first liquid cooling plate 3, and the positioning of the carrier beam structure and the battery module 4. Of course, the first positioning structure and the second positioning structure may be provided in other forms.

As shown in fig. 3 and 4, the carrier structure includes a plurality of side beams, longitudinal beams 26 and cross beams 25, where the number of the side beams is identical to the number of the side walls of the battery box 1 (for example, four), the plurality of side beams are connected to the side walls of the battery box 1 one by one, two adjacent side beams are connected, the longitudinal beams 26 and the cross beams 25 are disposed in the middle of the battery box 1 and are cross-connected, two ends of the longitudinal beams 26 are connected to two opposite side beams, and two ends of the cross beams 25 are connected to two opposite side beams. Specifically, the battery box 1 is provided in a square structure having four side walls, four side beams are provided, and the longitudinal beams 26 and the transverse beams 25 are crisscrossed, and the above connection means include, but are not limited to, welding and riveting.

So, a closed ring frame structure is constituteed to a plurality of side beams to consolidate in the inner wall of battery case 1, strengthened the shape stability of battery case 1, and cross connection's longeron 26 has good bearing capacity with crossbeam 25, and then has realized setting up a set of integrated bearing beam structure in the bottom of battery case 1, reduces the risk that inefficacy was influenced because of external factors such as vibration, impact, has promoted the bulk strength, the bearing capacity of battery case 1, solves the problem of the box yielding of battery case 1 among the prior art.

The side beams are provided with four side beams, namely, a first side beam 21, a second side beam 22, a third side beam 23 and a fourth side beam 24, the first side beam 21 and the second side beam 22 are oppositely arranged, the third side beam 23 and the fourth side beam 24 are oppositely arranged, the first side beam 21, the second side beam 25 and the cross beam 25 are respectively overlapped on the longitudinal beam 26, the third side beam 23 and the fourth side beam 24, in the assembling process, the third side beam 23, the fourth side beam 24 and the cross beam 25 are firstly arranged at the bottom of the battery box 1 and are welded, and then the first side beam 21, the second side beam 22 and the longitudinal beam 26 are overlapped on the longitudinal beam 26, the third side beam 23 and the fourth side beam 24 and are welded, wherein the longitudinal beam 26 and the cross beam 25 are fully welded to form an integrated structure, so that the degree of matching of the layout structure is good, and the degree of stability of the structure is optimized.

In combination with the first positioning structure and the second positioning structure, at least one (at least one of the first side beam 21, the second side beam 22, the third side beam 23 and the fourth side beam 24 may be one, two, three or four) of the plurality of side beams (for example, the first side beam 21, for example, the first side beam 21 and the second side beam 22) is provided with a strip-shaped boss 211, the first positioning structure includes the strip-shaped boss 211, the extension direction of the strip-shaped boss 211 is consistent with the extension direction of the side beam, which is favorable for improving the structural strength of the side beam, and in the assembly process, the side edge of the first liquid cooling plate 3 is abutted against the strip-shaped boss 211 to limit the first liquid cooling plate 3, thereby forming the first positioning structure, which is favorable for improving the positioning accuracy and stability.

The second positioning structure comprises a positioning column arranged on the table top of the strip-shaped boss 211, and the battery is not accurate to penetrate through the positioning column so as to fix the battery module on the table top of the strip-shaped boss 211. In the assembly process, the strip-shaped boss 211 is used for positioning the first liquid cooling plate 3 and lifting the battery cell module, so that the connection positions of the first liquid cooling plate 3 and the battery cell module are misplaced, the first liquid cooling plate 3 and the battery cell module can be respectively positioned, and the stability of the connection structure is improved. The battery pack is beneficial to reasonable arrangement in space, space waste in the height direction inside the battery pack is effectively avoided, and gravity born by the battery module can be released to the battery box through the strip-shaped boss 211 instead of directly acting on the first liquid cooling plate, so that the battery module can generate downward force to have certain absorption and buffer effects.

Specifically, the first side beam 21 (i.e., the inner side of the bar-shaped boss 211) and the bar-shaped boss 211 are provided with positioning columns, the positioning column on the inner side of the bar-shaped boss 211 (the side facing the middle of the battery box 1) is used for positioning the first liquid cooling plate 3, and the positioning column on the table top of the bar-shaped boss 211 is used for positioning the battery module 4. The second side beam 22 is also provided with a positioning column, and the positioning column can be arranged in the first liquid cooling plate 3 and the battery module 4 in a penetrating way so as to realize simultaneous positioning of the first liquid cooling plate 3 and the battery module 4. The first side beam 21, the second side beam 22 and the cross beam 25 may be provided with threaded holes, and bolts penetrate through the first liquid cooling plate 3 or the battery module 4 and are connected in the threaded holes, so as to fix the first liquid cooling plate 3 or the battery module 4 relative to the carrier beam structure.

In this scheme, bar boss 211 is protruding for the hem that sets up at the side rail (first side rail 21) middle part, and bar boss 211 is protruding in the middle part of side rail promptly to extend along the extending direction of side rail, can separate into two parts with the side rail through bar boss 211 like this, when strengthening structural stability, can also separate the stress of both sides, avoid both sides stress mutual interference. Here, automatically controlled subassembly and first liquid cooling board are located the both sides of bar boss 211 respectively, and when the installation, automatically controlled subassembly and first liquid cooling board are connected with the side roof beam through pressing riveting or bolt, because the tie point is many, can lead to the panel to appear crackle, bad phenomenon such as deformation if the flat board design, separate automatically controlled subassembly and first liquid cooling board's connection stress through bar boss 211, can solve above-mentioned problem.

Further, the electrical control assembly includes a plurality of electrical control elements (such as fuses 64, insulators, relays 65, shunts 66, BMS boards, etc.) connected to the side rail, and the side rail is provided with a bar-shaped recess 212, where the bar-shaped recess 212 is located between two adjacent electrical control elements. Like this, can strengthen the intensity of side roof beam through bar pit 212 to can separate each automatically controlled component's hookup point position, reduce stress concentration's phenomenon, promote the stability that side roof beam and automatically controlled subassembly are connected.

Specifically, the extension directions of the bar-shaped concave pits 212 and the bar-shaped convex lands 211 are perpendicular, and strength reinforcement of the plate material can be performed in various directions.

One side that the side roof beam is close to the lateral wall of battery box is provided with hem 213, and the lateral wall at the battery box is connected in the laminating of hem 213, is favorable to promoting connection stability.

In some embodiments, the battery module 4 is provided with a third positioning structure, and the second liquid cooling plate 5 is positioned on the battery module 4 through the third positioning structure. In the assembly process, the second liquid cooling plate 5 and the battery module 4 can be positioned through the third positioning structure, then the second liquid cooling plate 5 and the battery module 4 are connected, and the second liquid cooling plate 5 and the battery module 4 can be prevented from shaking or misplacement during connection, so that the assembly efficiency and the assembly quality are improved.

As shown in fig. 6 and 7, the battery module 4 includes a battery cell group, a side plate 41, a top plate 42, and a bottom plate 43, wherein the battery cell group has a plurality of battery cells stacked; the two side plates 41 are arranged, and in the stacking direction of the battery cells, the two side plates 41 are respectively positioned at two sides of the battery cell group, so that the two side plates 41 are stacked with the plurality of battery cells; the top plate 42 and the bottom plate 43 are located at the upper and lower sides of the cell group, respectively, and are connected to the side plates 41. Thus, the top plate 42, the bottom plate 43 and the two side plates 41 are enclosed into a frame shape and encircle the periphery of the battery cell group, so as to fix the battery cell group, specifically, the outer Zhou Tujiao of the battery cell group, and the top plate 42, the bottom plate 43 and the two side plates 41 are adhered to the periphery of the battery cell group.

The third positioning structure is disposed on the top plate 42, specifically, the third positioning structure may be disposed in a form of a positioning column, where the positioning column protrudes from the top plate 42 and can be disposed through and positioned in the second liquid cooling plate 5 (correspondingly, a positioning hole matched with the positioning column is disposed on the second liquid cooling plate 5, and the positioning column is disposed through the positioning hole), so as to form positioning of the battery module 4 and the second liquid cooling plate 5. Of course, the third positioning structure may be provided in other forms.

Further, the side plates 41 are connected to the load beam structure. Specifically, a connecting seat is disposed on a side of the side plate 41 away from the battery cell group, and bolts sequentially penetrate through the connecting seat and the bottom plate 43 and are connected to the carrier beam structure.

The battery module 4 further comprises a spacer 44, the spacer 44 is located in the middle of the battery cell group and is arranged between two adjacent battery cells in a stacked mode, the spacer 44 has a hollow structure, and the upper side and the lower side of the spacer 44 are respectively connected with the top plate 42 and the bottom plate 43. Like this, the hollow structure of spacer 44 makes it have supporting and buffering effect, when battery case 1 produced the vibration, spacer 44 absorbs the vibration, and make the relative position between a plurality of electric cores stable, and make battery module 4 constitute stable monolithic structure through division board, roof 42, bottom plate 43 and two curb plates 41 moreover, be favorable to designing battery module 4 into large-scale module, not only improved the space utilization of battery case 1 through large-scale module design, the volume energy is bigger, simplify the PACK structure, greatly reduced cost.

Specifically, the spacer 44 is an aluminum profile covered with an insulating film on the surface. Therefore, the aluminum profile is provided with the hollow structure, the aluminum profile is light in weight, and can meet certain strength requirements, and the surface of the aluminum profile is coated with the insulating film, so that certain insulating and pressure-resistant requirements can be met.

The battery module 4 is provided with two to vertically arrange along the range upon range of direction of electric core, reduce the quantity of battery module 4 like this, increase the size of battery module 4, not only improved the space utilization of battery case 1 through large-scale module design, volumetric energy is bigger, simplifies the PACK structure, very big reduce cost.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are used for more clearly describing the technical solutions, and are not intended to limit the scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims

1. A battery pack, comprising:

the battery module is connected with the bearing beam structure;

2. The battery pack of claim 1, further comprising:

The first liquid cooling plate is connected with the bearing beam structure;

3. The battery pack according to claim 2, wherein a first positioning structure and/or a second positioning structure are provided on the carrier structure, the first liquid cooling plate is fixed on the carrier structure through the first positioning structure, and the battery module is fixed on the carrier structure through the second positioning structure.

4. The battery pack of claim 3, wherein the carrier bar structure comprises a plurality of side bars respectively connected to a plurality of the side plates, at least one of the plurality of side bars is provided with the first positioning structure, and the first positioning structure comprises a bar-shaped boss abutted against a side edge of the first liquid cooling plate.

5. The battery pack of claim 4, wherein the second positioning structure comprises a positioning post disposed on a top surface of the bar-shaped boss, and the battery module is fixed on the top surface of the bar-shaped boss.

6. The battery pack according to claim 4, wherein the bar-shaped boss protrudes from the middle of the side beam and extends along the extending direction of the side beam, and the electric control assembly and the first liquid cooling plate are respectively located at both sides of the bar-shaped boss.

7. The battery pack of claim 6, wherein the electrical control assembly comprises a plurality of electrical control elements coupled to the side rails, the side rails having a bar-shaped recess disposed therein, the bar-shaped recess being positioned between adjacent ones of the electrical control elements.

8. The battery pack according to claim 2, comprising:

9. The battery pack according to claim 2, further comprising:

10. The battery pack according to claim 1, wherein the battery modules are provided in two and are arranged in a direction perpendicular to the stacking direction of the battery cells.