Box structure frame and battery pack

Abstract

The invention provides a box body structure frame and a battery pack, and relates to the technical field of batteries, the box body structure frame comprises a middle longitudinal beam, a first cross beam and a second cross beam, the middle longitudinal beam is arranged in a battery box body in the Y direction and is used for dividing the battery box body into a first subarea and a second subarea, and a switching structure is arranged on the middle longitudinal beam; the first cross beam and the second cross beam are arranged on the two sides of the middle longitudinal beam in the X direction and connected to the switching structure, the first cross beam and the second cross beam are arranged in a staggered mode in the Y direction, and an installation support is arranged on the middle longitudinal beam and can fix an electric connection bar. Compared with the prior art, the box structure frame provided by the embodiment of the invention can be suitable for the design of different numbers of battery cell modules on the two sides, the applicability is improved, the space utilization rate of the whole bag is improved, meanwhile, the electric connection bars can be effectively integrated and fixed, and the fixing effect is better.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a box structure frame and a battery pack. Background Art

[0002] The middle longitudinal beam of the battery pack is generally set up crosswise with a cross beam that runs through the battery pack of CTP and is welded to the water cooling plate. Since the cross beam is an integrated through-design, this design can only meet the needs of left-right symmetrical battery packs. If the number of battery packs is arranged irregularly, only one more row of battery cells can be arranged to make up the space, which reduces the space utilization of the entire pack.

[0003] In addition, the electrical connection bars of conventional CTP battery packs need to be accommodated and supported by an additionally designed overall frame, while the electrical connection bars for busbar function are usually dispersedly arranged and attached to the battery cells for support. Such electrical connection bars have poor supporting effects and are prone to displacement or shaking. Summary of the invention

[0004] The object of the present invention is to provide a box structure frame and a battery pack, which can be suitable for designs with different numbers of battery cell modules on both sides, improve its applicability, and improve the space utilization of the whole package, while being able to effectively integrate and fix the electrical connection row, with a better fixing effect.

[0005] In a first aspect, the present invention provides a box structure frame for being set in a battery box, comprising an intermediate longitudinal beam, a first cross beam and a second cross beam, wherein the intermediate longitudinal beam is arranged in the battery box along the Y direction and is used to separate the battery box into a first partition and a second partition, and a transfer structure is provided on the intermediate longitudinal beam, the first cross beam and the second cross beam are arranged on both sides of the intermediate longitudinal beam along the X direction and are connected to the transfer structure, wherein the first cross beam is used to separate the first partition into a first battery compartment and a first electrical compartment, and the second cross beam is used to separate the second partition into a second battery compartment and a second electrical compartment.

[0006] In an optional embodiment, the transition structure includes a first transition protrusion and a second transition protrusion located on both sides of the middle longitudinal beam, the first transition protrusion and the second transition protrusion respectively protrude on both sides of the middle longitudinal beam along the X direction, the first transition protrusion is correspondingly assembled in the first cross beam, and the second transition protrusion is correspondingly assembled in the second cross beam.

[0007] In an optional embodiment, the first transfer protrusion and the second transfer protrusion are staggered along the Y direction, so that the first crossbeam and the second crossbeam are staggered.

[0008] In an optional embodiment, a limiting structure is also provided on the middle longitudinal beam, and the box structure frame also includes a third cross beam and a fourth cross beam, the third cross beam and the fourth cross beam are arranged on both sides of the middle longitudinal beam along the X direction and connected to the limiting structure, and the third cross beam is located in the first battery compartment, and the fourth cross beam is located in the second battery compartment.

[0009] In an optional embodiment, the limiting structure includes a first limiting protrusion and a second limiting protrusion located on both sides of the middle longitudinal beam, the first limiting protrusion and the second limiting protrusion respectively protrude toward both sides of the middle longitudinal beam along the X direction, and the first limiting protrusion is correspondingly assembled in the third cross beam, and the second limiting protrusion is correspondingly assembled in the fourth cross beam.

[0010] In an optional embodiment, the first limiting protrusion and the second limiting protrusion are symmetrically arranged on both sides of the middle longitudinal beam, so that the third cross beam and the fourth cross beam are located in the same straight line direction.

[0011] In an optional embodiment, a mounting bracket is provided on one side of the middle longitudinal beam away from the inner bottom surface of the battery box along the Z direction, and the mounting bracket is used to fix the electrical connection row extending along the Y direction.

[0012] In an optional embodiment, a first tie structure is provided on the side of the mounting bracket along the Z direction away from the inner bottom surface of the battery box, and the first tie structure is used to fix the first electrical connection row. A second tie structure is provided on the side wall of the mounting bracket along the X direction, and the second tie structure is used to fix the second electrical connection row.

[0013] In an optional embodiment, the mounting bracket has an internal cavity, and a plurality of reinforcing plates are arranged at intervals in the internal cavity.

[0014] In an optional embodiment, the middle longitudinal beam between the first electrical compartment and the second electrical compartment has a mounting table, an electrical bracket is arranged on the mounting table, the mounting table is used to carry the first electrical component, and the electrical bracket is used to carry the second electrical component.

[0015] In a second aspect, the present invention provides a battery pack, comprising a first battery cell module, a second battery cell module, a battery case and a case structure frame as described in any one of the aforementioned embodiments, the intermediate longitudinal beam is arranged in the battery case along the Y direction, and divides the battery case into a first partition and a second partition, the first cross beam divides the first partition into a first battery compartment and a first electrical compartment, the second cross beam divides the second partition into a second battery compartment and a second electrical compartment, the first battery cell module is arranged in the first battery compartment, and the second battery cell module is arranged in the second battery compartment.

[0016] In an optional embodiment, the inner walls of the battery box on both sides along the X direction are respectively provided with relatively protruding first connecting members and second connecting members, and the first connecting member is correspondingly assembled at the end of the first cross beam away from the middle longitudinal beam, and the second connecting member is correspondingly assembled at the end of the second cross beam away from the middle longitudinal beam.

[0017] The beneficial effects of the embodiments of the present invention are: The box structure frame and battery pack provided by the embodiment of the present invention arrange the middle longitudinal beam in the battery box along the Y direction, and can divide the battery box into a first partition and a second partition, and a transfer structure is provided on the middle longitudinal beam, the first crossbeam and the second crossbeam are arranged on both sides of the middle longitudinal beam along the X direction and connected to the transfer structure, and the first crossbeam can divide the first partition into a first battery compartment and a first electrical compartment, the second crossbeam can divide the second partition into a second battery compartment and a second electrical compartment, and the first crossbeam and the second crossbeam are staggered along the Y direction, so that first battery compartments and second battery compartments of different sizes can be formed, which is suitable for situations where the number of battery cell modules on both sides is different, and the setting of the mounting bracket can effectively integrate and fix the electrical connection row directly together. Compared with the prior art, the box structure frame provided by the embodiment of the present invention can be suitable for designs with different numbers of battery cell modules on both sides, improve its applicability, and improve the space utilization of the whole package, and at the same time can effectively integrate and fix the electrical connection row, and the fixing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of the box structure frame provided by an embodiment of the present invention; Figure 2A schematic diagram of the structure of the box structure frame provided by an embodiment of the present invention assembled in a battery box from a first perspective; Figure 3 A schematic diagram of the structure of a battery pack provided by an embodiment of the present invention; Figure 4 for Figure 1 Schematic diagram of the structure of the middle longitudinal beam; Figure 5 The figure is a second perspective structural schematic diagram of a box structure frame provided by an embodiment of the present invention assembled in a battery box; Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle VI; Figure 7 for Figure 5 Schematic diagram of the structure of the middle longitudinal beam.

[0020] Icons: 100-box structure frame; 110-middle longitudinal beam; 120-first cross beam; 121-first battery compartment; 122-first electrical compartment; 130-second cross beam; 131-second battery compartment; 132-second electrical compartment; 140-transfer structure; 141-first transfer protrusion; 142-second transfer protrusion; 150-limiting structure; 151-first limiting protrusion; 152-second limiting protrusion; 160-third cross beam; 170-fourth cross beam; 180-mounting bracket; 181-first tie structure; 182-second tie structure; 183-reinforcement plate; 190-mounting table; 191-electrical bracket; 200-battery pack; 210-battery box; 230-first battery cell module; 240-second battery cell module; 250-first connecting piece. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0026] As disclosed in the background technology, the middle longitudinal beam of the battery pack in the prior art generally uses a cross beam structure that runs through the entire structure and divides the interior of the box into a battery compartment and an electrical compartment. The battery compartment is a symmetrical structure, so this cross beam structure is more suitable for left-right symmetrical battery packs. When the number of battery packs is arranged irregularly, only an additional row of battery cells can be arranged to make up the space, or a part of the space can be left empty, which reduces the space utilization of the entire battery pack.

[0027] In order to solve the above problems, an embodiment of the present invention provides a new box structure frame and a battery pack. It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict. Specific embodiments See also Figures 1 to 3 The embodiment of the present invention provides a box structure frame 100, which can be applicable to designs with different numbers of battery cell modules on both sides, thereby improving its applicability and further improving the space utilization of the entire package.

[0029] The box structure frame 100 provided in an embodiment of the present invention is used to be set in a battery box 210, and includes an intermediate longitudinal beam 110, a first cross beam 120 and a second cross beam 130. The intermediate longitudinal beam 110 is arranged in the battery box 210 along the Y direction and is used to divide the battery box 210 into a first partition and a second partition, and a transfer structure 140 is provided on the intermediate longitudinal beam 110. The first cross beam 120 and the second cross beam 130 are arranged on both sides of the intermediate longitudinal beam 110 along the X direction and are connected to the transfer structure 140, wherein the first cross beam 120 is used to divide the first partition into a first battery compartment 121 and a first electrical compartment 122, the second cross beam 130 is used to divide the second partition into a second battery compartment 131 and a second electrical compartment 132, and the first cross beam 120 and the second cross beam 130 are staggered along the Y direction.

[0030] It should be noted that the battery box 210 in this embodiment is a rectangular structure as a whole. The Y direction mentioned in this embodiment refers to the length direction of the battery box 210, the X direction mentioned in this embodiment refers to the width direction of the battery box 210, and the Z direction mentioned in this embodiment refers to the height direction of the battery box 210. Please refer to the figure for details. The middle longitudinal beam 110 can be welded and fixed on the bottom wall of the battery box 210, and the material can be an aluminum profile. The first partition and the second partition can be two rectangular areas symmetrically distributed along the X direction. Among them, the first crossbeam 120 can further divide the first partition into a first battery compartment 121 and a first electrical compartment 122, the first battery compartment 121 is used to accommodate the battery module, and the first electrical compartment 122 is used to accommodate some electrical control components; the second crossbeam 130 can divide the second partition into a second battery compartment 131 and a second electrical compartment 132, the second battery compartment 131 is used to accommodate the battery module, and the second electrical compartment 132 is used to accommodate the remaining electrical control components. Since the first crossbeam 120 and the second crossbeam 130 are designed to be staggered along the Y direction, the volumes of the first battery compartment 121 and the second battery compartment 131 are not the same, and can respectively accommodate different numbers of battery modules, wherein the staggered spacing of the first crossbeam 120 and the second crossbeam 130 along the Y direction can be determined according to the actual distribution of the battery modules, and preferably, the staggered spacing can be a multiple of the width of the battery cell in the battery module, which greatly improves the applicability of the box structure frame 100.

[0031] See also Figure 2 , Figures 4 to 7 The transfer structure 140 includes a first transfer protrusion 141 and a second transfer protrusion 142 located on both sides of the middle longitudinal beam 110. The first transfer protrusion 141 and the second transfer protrusion 142 protrude toward both sides of the middle longitudinal beam 110 along the X direction, respectively. The first transfer protrusion 141 is correspondingly assembled in the first crossbeam 120, and the second transfer protrusion 142 is correspondingly assembled in the second crossbeam 130. Specifically, the first transfer protrusion 141 and the second transfer protrusion 142 are staggered along the Y direction, so that the first crossbeam 120 and the second crossbeam 130 are staggered. The first crossbeam 120 is hollow, and a first assembly hole is formed on its end surface. The first transfer protrusion 141 can be correspondingly assembled in the first assembly hole, so that the connection and fixation between the transfer structure 140 and the first crossbeam 120 can be achieved. Similarly, a second assembly hole is formed on the end surface of the second cross beam 130 , and the second adapter protrusion 142 can be correspondingly assembled in the second assembly hole, so that the connection and fixation between the adapter structure 140 and the second cross beam 130 can be achieved.

[0032] In some embodiments, the first transfer protrusion 141 and the second transfer protrusion 142 are integrally arranged on both sides of the middle longitudinal beam 110, and the first transfer protrusion 141 can be two first protrusions distributed up and down, and the two first protrusions can be correspondingly inserted into the first cross beam 120. Since the middle part of the first cross beam 120 is provided with a reinforcing rib, the gap between the two first protrusions just corresponds to the reinforcing rib, so the two first protrusions can be stuck on both sides of the reinforcing rib and be fixed. Similarly, the second transfer protrusion 142 can be two second protrusions distributed up and down, and the two second protrusions can be correspondingly inserted into the second cross beam 130. Since the middle part of the second cross beam 130 is also provided with a reinforcing rib, the gap between the two second protrusions just corresponds to the reinforcing rib, so the two second protrusions can be stuck on both sides of the reinforcing rib and be fixed.

[0033] It should be noted that, in this embodiment, the number of battery cells in the first battery compartment 121 and the second battery compartment 131 are arranged differently, and the number of battery cell columns on both sides of the middle longitudinal beam 110 of the whole package structure is different. Therefore, the first crossbeam 120 and the second crossbeam 130 may not be arranged on the same straight line. Specifically, the first crossbeam 120 and the second crossbeam 130 may be limited respectively by the staggered arrangement of the first adapter protrusion 141 and the second adapter protrusion 142.

[0034] In some embodiments, a limiting structure 150 is also provided on the middle longitudinal beam 110, and the box structure frame 100 also includes a third cross beam 160 and a fourth cross beam 170, and the third cross beam 160 and the fourth cross beam 170 are arranged on both sides of the middle longitudinal beam 110 along the X direction and connected to the limiting structure 150, and the third cross beam 160 is located in the first battery compartment 121, and the fourth cross beam 170 is located in the second battery compartment 131. Specifically, the third crossbeam 160 and the first crossbeam 120 are parallel and spaced apart, and the third crossbeam 160 is connected to the inner wall of the battery box 210, and the fourth crossbeam 170 and the second crossbeam 130 are parallel and spaced apart, and the fourth crossbeam 170 is connected to the inner wall of the battery box 210. The arrangement of the third crossbeam 160 and the fourth crossbeam 170, on the one hand, can enhance the structural strength of the overall frame and increase the reinforcement structure, so that when the expansion force of the battery cell is large, the structure of the battery box 210 can be made more stable, thereby increasing the strength of the entire battery pack 200; on the other hand, the first battery compartment 121 and the second battery compartment 131 can be divided again, thereby separating different areas for the placement of battery cell modules.

[0035] Further, the limiting structure 150 includes a first limiting protrusion 151 and a second limiting protrusion 152 located on both sides of the middle longitudinal beam 110, the first limiting protrusion 151 and the second limiting protrusion 152 protrude toward both sides of the middle longitudinal beam 110 along the X direction respectively, and the first limiting protrusion 151 is correspondingly assembled in the third cross beam 160, and the second limiting protrusion 152 is correspondingly assembled in the fourth cross beam 170. Specifically, the first limiting protrusion 151 and the second limiting protrusion 152 are integrally arranged on both sides of the middle longitudinal beam 110, and the third cross beam 160 is hollow, and a third assembly hole is formed on its end surface, and the first limiting protrusion 151 can be correspondingly assembled in the third assembly hole, so that the limiting structure 150 and the third cross beam 160 can be connected and fixed. Similarly, the fourth cross beam 170 is hollow and has a fourth assembly hole formed on the end surface. The second limiting protrusion 152 can be correspondingly assembled in the fourth assembly hole, thereby achieving connection and fixation between the limiting structure 150 and the fourth cross beam 170 .

[0036] In some embodiments, the first limiting protrusion 151 and the second limiting protrusion 152 are integrally arranged on both sides of the middle longitudinal beam 110, and the first limiting protrusion 151 can be two third protrusions distributed up and down, and the two third protrusions can be correspondingly inserted in the three cross beams. Since the middle part of the third cross beam 160 is provided with a reinforcing rib, the gap between the two third protrusions just corresponds to the reinforcing rib, so the two third protrusions can be stuck on both sides of the reinforcing rib and fixed. Similarly, the second limiting protrusion 152 can be two fourth protrusions distributed up and down, and the two fourth protrusions can be correspondingly inserted in the fourth cross beam 170. Since the middle part of the fourth cross beam 170 is also provided with a reinforcing rib, the gap between the two fourth protrusions just corresponds to the reinforcing rib, so the two fourth protrusions can be stuck on both sides of the reinforcing rib and fixed.

[0037] In some embodiments, the first limiting protrusion 151 and the second limiting protrusion 152 are symmetrically arranged on both sides of the middle longitudinal beam 110, so that the third cross beam 160 and the fourth cross beam 170 are located in the same straight line direction. Specifically, the third cross beam 160 and the fourth cross beam 170 are located in the same straight line direction, which can further improve the structural strength.

[0038] See also Figure 5 and Figure 6In some embodiments, a mounting bracket 180 is provided on one side of the middle longitudinal beam 110 away from the inner bottom surface of the battery box 210 along the Z direction, and the mounting bracket 180 is used to fix the electrical connection bar extending along the Y direction. Specifically, the mounting bracket 180 is integrally arranged at the top of the middle longitudinal beam 110, and can directly integrate the electrical connection bar together, wherein the electrical connection bar can be a copper bar. Preferably, there can be multiple mounting brackets 180, and specifically, one mounting bracket 180 can be provided at intervals of 220 mm in the Y direction, and the mounting bracket 180 can fix two copper bars running through the Y direction.

[0039] Furthermore, the mounting bracket 180 can fix the copper bar by a tie. Specifically, a first tie structure 181 is provided on one side of the mounting bracket 180 away from the inner bottom surface of the battery box 210 along the Z direction. The first tie structure 181 is used to fix the first electrical connection bar. A second tie structure 182 is provided on the side wall of one side of the mounting bracket 180 along the X direction. The second tie structure 182 is used to fix the second electrical connection bar. The first tie structure 181 is located on the top side of the mounting bracket 180 and is fixed after being inserted through a hole punched in the top side. The second tie structure 182 is located on the side of the mounting bracket 180 and is fixed after being inserted through a hole punched in the side wall.

[0040] It should be noted that, in this embodiment, the mounting bracket 180 may be in a 7-shape, with a top width greater than a bottom width, so that the first tie structure 181 can be more stably installed and fixed. Specifically, the first tie structure 181 is provided with a first screw structure, which can be passed through the top side of the mounting bracket 180 and fixed; the second tie structure 182 is provided with a second screw structure, which can be passed through the side wall of the mounting bracket 180 and fixed.

[0041] In some embodiments, the mounting bracket 180 has an internal cavity, in which a plurality of reinforcing plates 183 are arranged at intervals. Specifically, by providing a plurality of reinforcing plates 183, the structural strength of the mounting bracket 180 can be improved.

[0042] See also Figure 6 and Figure 7In some embodiments, the middle longitudinal beam 110 between the first electrical compartment 122 and the second electrical compartment 132 has a mounting table 190, and an electrical bracket 191 is arranged on the mounting table 190. The mounting table 190 is used to carry the first electrical component, and the electrical bracket 191 is used to carry the second electrical component. Specifically, the first electrical compartment 122 and the second electrical compartment 132 can be connected to each other, and some electrical units, such as BMS control panels or BDUs, can be arranged in the first electrical compartment 122 and the second electrical compartment 132. These electrical units cannot directly contact the bottom wall of the battery box 210 due to heat dissipation requirements, so these electrical components can be supported by the mounting table 190 and the electrical bracket 191. Among them, the first electrical component and the second electrical component can be at least one of BMS / BDU. Preferably, the first electrical component can be an upper BMS, and the second electrical component can be a lower BMS, and the first electrical component is located on the upper side of the second electrical component. In actual installation, the first electrical component and the electrical bracket 191, and the second electrical component and the mounting table 190 can be installed by bolting.

[0043] See also Figure 3 The embodiment of the present invention further provides a battery pack 200, including a first battery cell module 230, a second battery cell module 240, a battery box 210 and the aforementioned box structure frame 100, the box structure frame 100 includes an intermediate longitudinal beam 110, a first cross beam 120 and a second cross beam 130, the intermediate longitudinal beam 110 is arranged in the battery box 210 along the Y direction, and divides the battery box 210 into a first partition and a second partition, the first cross beam 120 divides the first partition into a first battery compartment 121 and a first electrical compartment 122, the second cross beam 130 divides the second partition into a second battery compartment 131 and a second electrical compartment 132, the first battery cell module 230 is arranged in the first battery compartment 121, and the second battery cell module 240 is arranged in the second battery compartment 131.

[0044] Please continue to see Figure 2In some embodiments, the inner side walls of the battery box 210 on both sides along the X direction are respectively provided with relatively protruding first connectors 250 and second connectors (not numbered in the figure), the first connector 250 is correspondingly mounted on the end of the first beam 120 away from the middle longitudinal beam 110, and the second connector is correspondingly mounted on the end of the second beam 130 away from the middle longitudinal beam 110. Specifically, one end of the first connector 250 is fixedly connected to the inner wall of the battery box 210, and the connection method can be welding or screw connection, preferably screw connection, and the other end of the first connector 250 is partially inserted into the cavity of the first beam 120, and the size of the first connector 250 at this end is adapted to the size of the cavity of the first beam 120. In order to meet the connection strength and enhance the structural strength of the first beam 120, the length of the first connector 250 inserted into the first beam 120 is not fixed, and can be appropriately adjusted according to actual needs. At the same time, the connection structure between the second connector and the second beam 130 is similar, and no further introduction is given here.

[0045] In some embodiments, the portion of the first connecting member 250 extending into the first beam 120 and the first beam 120 may be reinforced by screw connection. Similarly, the portion of the second connecting member extending into the second beam 130 and the second beam 130 may be reinforced by screws.

[0046] It should be noted that in this embodiment, other connecting parts can also be set on the inner wall of the battery box 210, and correspondingly connected to the third cross beam 160, the fourth cross beam 170 and the middle longitudinal beam 110, and their connection structure can refer to the connection structure between the first connecting part 250 and the first cross beam 120.

[0047] In summary, the box structure frame 100 and the battery pack 200 provided by the embodiment of the present invention arrange the middle longitudinal beam 110 in the battery box 210 along the Y direction, and can divide the battery box 210 into a first partition and a second partition, and a transfer structure 140 is provided on the middle longitudinal beam 110, and the first cross beam 120 and the second cross beam 130 are arranged on both sides of the middle longitudinal beam 110 along the X direction and connected to the transfer structure 140, and the first cross beam 120 can divide the first partition into a first battery compartment 121 and a first electrical compartment 122, and the second cross beam 130 can divide the second partition into a second battery compartment 131 and a second electrical compartment 132, and the first cross beam 120 and the second cross beam 130 are staggered along the Y direction, so that first battery compartments 121 and second battery compartments 131 of different sizes can be formed, which is suitable for situations where the number of battery cell modules on both sides is different. Compared with the prior art, the box structure frame 100 provided in the embodiment of the present invention can be applicable to designs with different numbers of battery cell modules on both sides, thereby improving its applicability and improving the space utilization of the entire package.

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A box structure frame, used to be arranged in a battery box (210), characterized in that: The battery box (210) comprises an intermediate longitudinal beam (110), a first cross beam (120) and a second cross beam (130), wherein the intermediate longitudinal beam (110) is arranged in the battery box (210) along the Y direction and is used to separate the battery box (210) into a first partition and a second partition, and a switching structure (140) is provided on the intermediate longitudinal beam (110), and the first cross beam (120) and the second cross beam (130) are arranged on both sides of the intermediate longitudinal beam along the X direction and are connected to the switching structure (140), wherein the first cross beam (120) is used to separate the first partition into a first battery compartment (121) and a first electrical compartment (122), and the second cross beam (130) is used to separate the second partition into a second battery compartment (131) and a second electrical compartment (132), and the first cross beam (120) and the second cross beam (130) are staggered along the Y direction; A mounting bracket (180) is provided on one side of the middle longitudinal beam (110) away from the inner bottom surface of the battery box (210) along the Z direction, and the mounting bracket (180) is used to fix the electrical connection row extending along the Y direction.

2. The box structure frame according to claim 1, characterized in that: The transition structure (140) comprises a first transition protrusion (141) and a second transition protrusion (142) located on both sides of the middle longitudinal beam (110); the first transition protrusion (141) and the second transition protrusion (142) respectively protrude towards both sides of the middle longitudinal beam along the X direction; the first transition protrusion (141) is correspondingly assembled in the first crossbeam (120); the second transition protrusion (142) is correspondingly assembled in the second crossbeam (130); and the first transition protrusion (141) and the second transition protrusion (142) are staggered along the Y direction, so that the first crossbeam (120) and the second crossbeam (130) are staggered.

3. The box structure frame according to claim 1, characterized in that: A limiting structure (150) is also provided on the middle longitudinal beam (110), and the box structure frame further comprises a third cross beam (160) and a fourth cross beam (170), the third cross beam (160) and the fourth cross beam (170) being arranged on both sides of the middle longitudinal beam along the X direction and connected to the limiting structure (150), and the third cross beam (160) is located in the first battery compartment (121), and the fourth cross beam (170) is located in the second battery compartment (131).

4. The box structure frame according to claim 3, characterized in that: The limiting structure (150) comprises a first limiting protrusion and a second limiting protrusion located on both sides of the middle longitudinal beam (110), the first limiting protrusion and the second limiting protrusion respectively protrude towards both sides of the middle longitudinal beam along the X direction, and the first limiting protrusion is correspondingly mounted in the third cross beam (160), and the second limiting protrusion is correspondingly mounted in the fourth cross beam (170).

5. The box structure frame according to claim 4, characterized in that: The first limiting protrusion and the second limiting protrusion are symmetrically arranged on both sides of the middle longitudinal beam (110), so that the third cross beam (160) and the fourth cross beam (170) are located in the same straight line direction.

6. The box structure frame according to claim 1, characterized in that: A first tie structure (181) is provided on a side of the mounting bracket (180) away from the inner bottom surface of the battery box (210) along the Z direction, and the first tie structure (181) is used to fix the first electrical connection row, and a second tie structure (182) is provided on a side wall of one side of the mounting bracket (180) along the X direction, and the second tie structure (182) is used to fix the second electrical connection row.

7. The box structure frame according to claim 1, characterized in that: The mounting bracket (180) has an internal cavity, and a plurality of reinforcing plates (183) are arranged at intervals in the internal cavity.

8. The box structure frame according to claim 1, characterized in that: The middle longitudinal beam (110) between the first electrical compartment (122) and the second electrical compartment (132) has a mounting table (190), and an electrical bracket (191) is arranged on the mounting table (190). The mounting table (190) is used to carry a first electrical component, and the electrical bracket (191) is used to carry a second electrical component.

9. A battery pack (200), characterized in that: The invention comprises a first battery cell module (230), a second battery cell module (240), a battery box (210), and a box structure frame according to any one of claims 1 to 8, wherein the middle longitudinal beam (110) is arranged in the battery box (210) along the Y direction and divides the battery box (210) into a first partition and a second partition, the first cross beam (120) divides the first partition into a first battery compartment (121) and a first electrical compartment (122), the second cross beam (130) divides the second partition into a second battery compartment (131) and a second electrical compartment (132), the first battery cell module (230) is arranged in the first battery compartment (121), and the second battery cell module (240) is arranged in the second battery compartment (131).

10. The battery pack (200) according to claim 9, characterized in that: A first connecting member (250) and a second connecting member that are relatively protruding are respectively provided on the inner side walls of both sides of the battery box (210) along the X direction; the first connecting member (250) is correspondingly mounted on an end of the first cross beam (120) away from the middle longitudinal beam (110); and the second connecting member is correspondingly mounted on an end of the second cross beam (130) away from the middle longitudinal beam (110).

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