Frame structure, battery pack and electric equipment

Abstract

The invention provides a frame structure, a battery pack and electric equipment, and relates to the technical field of batteries, the frame structure comprises a frame main body and a partition plate, the frame main body is provided with a cavity, the partition plate extends along a first horizontal direction and divides the cavity into at least two independent mounting areas, the frame main body is provided with independent exhaust channels which are in one-to-one correspondence with the mounting areas, and each exhaust channel is communicated with the corresponding mounting area; and the frame main body is configured as follows: under the condition that the battery modules are mounted in the mounting areas, the battery cell explosion-proof valves arranged in the mounting areas on the two sides of the partition plates are arranged oppositely. The fault out-of-control range of the battery pack can be effectively reduced.

Description

Technical Field

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

[0002] Currently, battery packs are mainly used to provide DC power to DC loads of electrical equipment such as energy storage systems or electric vehicles.

[0003] In related technologies, a battery pack primarily consists of a frame structure and two battery modules housed within it. The battery modules contain multiple battery cells, which are connected in series and parallel. Each cell is equipped with a cell explosion-proof valve. If a cell loses control due to a thermal fault or other cause and internal pressure increases, the high-pressure gas and high-temperature electrolyte within the cell are ejected from the valve to vent the explosion of the individual cell, reducing the possibility of explosion.

[0004] However, the inventors realized that in actual use, when some battery cells of a battery module thermally run away, the high-pressure gas and high-temperature electrolyte ejected from the battery cells are likely to be retained in the battery pack, triggering other battery cells of another adjacent battery module to run away, increasing the risk of the entire battery pack running away, thereby expanding the scope of the battery pack's failure and out-of-control. Summary of the Invention

[0005] One or more embodiments of the present application provide a frame structure, a battery pack, and an electrical device to solve or at least partially alleviate the problem in the related art that thermal runaway of a battery module of a battery pack triggers runaway of another battery module, resulting in a larger range of failure and runaway of the battery pack.

[0006] In a first aspect of the present application, a framework structure is provided, which adopts the following technical solution: A frame structure, applied to a battery pack, comprises a frame body and a partition, wherein the frame body is provided with a cavity, and the partition extends along a first horizontal direction and divides the cavity into at least two independent mounting areas; The frame body is provided with independent exhaust channels corresponding to the installation areas one by one, and each exhaust channel is communicated with the corresponding installation area; The frame body is configured such that when the battery modules are installed in the respective installation areas, the explosion-proof valves of the battery cells of the battery modules on both sides of the partition are arranged opposite to each other.

[0007] In some embodiments, the frame body includes two first side panels, and the two first side panels are spaced apart along the second horizontal direction; The first side plate is provided with a plurality of exhaust holes and a first exhaust flow channel integrated in the first side plate, and the exhaust holes are connected with the corresponding installation area and the first exhaust flow channel.

[0008] In some embodiments, the first side plate includes a first cavity and a second cavity, and the end of the first cavity along the vertical direction is connected to the second cavity; the first cavity is provided with the first exhaust channel and its outer side wall protrudes toward the installation area.

[0009] In some embodiments, the exhaust passage further includes a first explosion relief valve, which is fixed to the outer side wall of the first side plate and connected to the first exhaust flow channel.

[0010] In some embodiments, a plurality of first reinforcement plates are vertically spaced apart and arranged in a vertical manner in the first exhaust flow channel, and the plurality of first reinforcement plates divide the first exhaust flow channel into a plurality of independent first pressure relief spaces; At least part of the first reinforcing plates is provided with a through first notch at a position corresponding to the exhaust hole, so that the exhaust hole is communicated with the corresponding first pressure relief space through the first notch.

[0011] In some embodiments, at least a portion of the first reinforcing plate is provided with a bent portion at a position corresponding to the exhaust hole.

[0012] In some embodiments, the frame body further includes a second reinforcing plate, and the second reinforcing plate is fixed in the second cavity.

[0013] In some embodiments, the frame body further includes a second side plate, and the second side plate is fixed between the two first side plates; and both ends of the partition are respectively fixedly connected to the corresponding second side plates.

[0014] In some embodiments, the second side plate includes a third cavity and a fourth cavity, and an end portion of the third cavity in the vertical direction is connected to the fourth cavity; The outer side wall of the fourth cavity is convex relative to the third cavity toward a direction away from the installation area.

[0015] In some embodiments, the second side panel includes at least two second sub-side panels spaced apart along the second horizontal direction, and the second sub-side panels are fixedly connected to the partition panel; The exhaust channel also includes a second exhaust flow channel and a second explosion relief valve. Each second sub-side plate is respectively provided with the second exhaust flow channel, each second exhaust flow channel is connected to the first exhaust flow channel of the corresponding first side plate, and the second explosion relief valve is connected to the second exhaust flow channel.

[0016] In some embodiments, the second sub-side plate includes a fifth cavity and a sixth cavity, and the end of the fifth cavity in the vertical direction is connected to the sixth cavity; the fifth cavity is provided with the second exhaust flow channel; An outer side wall of the fifth cavity protrudes toward the installation area relative to the sixth cavity.

[0017] In some embodiments, the second explosion relief valve is fixed to the outer side wall of the fifth cavity.

[0018] In some embodiments, a plurality of third reinforcing plates arranged vertically at intervals are provided in the second exhaust flow channel, and the plurality of third reinforcing plates divide the second exhaust flow channel into a plurality of independent second pressure relief spaces.

[0019] In some embodiments, at least part of the third reinforcing plate is provided with a penetrating second notch at a position corresponding to the second explosion relief valve, so that at least part of the second pressure relief space is connected to the second explosion relief valve through the second notch.

[0020] In some embodiments, the frame body further includes a fourth reinforcing plate, and the fourth reinforcing plate is fixed in the sixth cavity.

[0021] In some embodiments, the partition includes a partition body and a plurality of fifth reinforcing plates. The partition body is a shell structure with a cavity inside and open ends. The plurality of fifth reinforcing plates are fixed in the cavity at intervals along the vertical direction.

[0022] In some embodiments, the partition further includes a sealing plate, which is sealed and connected to the end opening of the partition body.

[0023] In some embodiments, the end of the partition away from the second explosion relief valve is clamped with the corresponding second side plate.

[0024] In some embodiments, the frame body further includes a bottom plate, and ends of the first side plate and the second side plate along the vertical direction are respectively fixedly connected to the bottom plate.

[0025] Compared with the related art, one or more embodiments of the present application include at least one of the following beneficial technical effects: The battery pack may include a frame structure and a battery module. The cavity is divided into multiple installation areas by fixing a partition in the cavity of the frame body. A battery module can be installed in each installation area, and the battery modules in adjacent installation areas are separated by the partition.

[0026] In which, each battery module may include multiple battery cells and multiple battery cell explosion-proof valves, and a battery cell explosion-proof valve is installed at the end of each battery cell; the frame body is provided with two exhaust channels in the same direction as the spacing arrangement of the two battery modules, and each exhaust channel is respectively connected to the corresponding installation area, so that each battery cell explosion-proof valve of the battery module in each installation area is respectively connected to the corresponding exhaust channel of the frame body. When some battery cells of the battery module generate high-pressure gas, high-temperature electrolyte and other fluids due to thermal runaway failure, the faulty battery cells discharge the fluid into the corresponding exhaust channel through the corresponding battery cell explosion-proof valve for pressure relief. Since the battery cell explosion-proof valves provided in the installation areas on both sides of the partition are arranged back to back, in other words, the directions of the fluids ejected by the battery cell explosion-proof valves of the two battery modules are opposite, and the two exhaust channels of the frame body are independent of each other, so that the partition and the two independent exhaust channels of the frame body are used to limit the fluid, effectively preventing the faulty battery cells from triggering the normal working battery module to lose control, thereby effectively reducing the failure and outage range of the battery pack.

[0027] In a second aspect of the present application, a battery pack is provided, which adopts the following technical solution: A battery pack includes a battery module and the frame structure as described above, wherein the battery module is installed in the installation area of ​​the frame structure, wherein the cell explosion-proof valve of each battery module is connected to the corresponding exhaust channel.

[0028] Therefore, since the battery pack includes a frame structure, the battery pack has at least all the technical effects of the frame structure, which will not be repeated here.

[0029] In some embodiments, the battery pack further includes An insulating plate is fixed between the end of the battery module along the first horizontal direction and the frame body of the frame structure, and a guide angle is provided on the side wall of the insulating plate away from the battery module.

[0030] and / or a buffer structure, fixed between the end of the battery module along the first horizontal direction and the frame body; and / or thermally conductive structural adhesive, used to fix the battery module to the bottom plate of the frame structure.

[0031] The third aspect of the present application provides an electrical device, which adopts the following technical solution: An electrical device includes the frame structure described above, or includes the battery pack described above.

[0032] Therefore, since the electrical equipment includes a frame structure or a battery pack, the electrical equipment at least has all the technical effects of the frame structure or the battery pack, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction to the drawings of the embodiments will be given below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not intended to limit the present application.

[0034] Figure 1 This is one of the structural schematic diagrams of a battery pack according to some embodiments of the present application.

[0035] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the GG section line.

[0036] Figure 3 for Figure 2 Enlarged view of part A.

[0037] Figure 4 This is one of the schematic diagrams of the explosion structure of a battery pack according to some embodiments of the present application.

[0038] Figure 5 This is one of the structural schematic diagrams of the frame structure according to some embodiments of the present application.

[0039] Figure 6 This is one of the schematic cross-sectional structural diagrams of the first side panel according to some embodiments of the present application.

[0040] Figure 7 for Figure 5 Magnified view of part B.

[0041] Figure 8 for Figure 6 Magnified view of part C.

[0042] Figure 9 This is the second schematic diagram of the cross-sectional structure of the first side panel according to some embodiments of the present application.

[0043] Figure 10 Schematic diagram of the structure of the second side panel according to some embodiments of the present application.

[0044] Figure 11 This is the second structural diagram of the frame structure according to some embodiments of the present application.

[0045] Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure along the HH section line.

[0046] Figure 13 This is the second schematic diagram of the explosion structure of the battery pack according to some embodiments of the present application.

[0047] Figure 14 Schematic diagram of the explosion structure of the second sub-side plate and the second explosion relief valve according to some embodiments of the present application.

[0048] Figure 15 Schematic diagram of the cross-sectional structure of the second sub-side panel according to some embodiments of the present application.

[0049] Figure 16 This is the third structural diagram of the framework structure according to some embodiments of the present application.

[0050] Figure 17 for Figure 16 Magnified view of part D.

[0051] Figure 18 Schematic diagram of the exploded structure of the frame body and the partition according to some embodiments of the present application.

[0052] Figure 19 for Figure 18 Enlarged view of part E.

[0053] Figure 20 Schematic diagram of the partial structure of a battery pack according to some embodiments of the present application.

[0054] Figure 21 Schematic diagram of a partial explosion structure of a battery pack according to some embodiments of the present application.

[0055] Figure 22 for Figure 21 Magnified view of part F.

[0056] Description of reference numerals: 1-partition; 11-partition body; 111-bayonet; 12-fifth reinforcement plate; 13-sealing plate; 2-frame body; 21-first side plate; 210-exhaust channel; 2101-first exhaust flow channel; 21011-first pressure relief space; 2102-first explosion relief valve; 2103-second exhaust flow channel; 21031-second pressure relief space; 2104-second explosion relief valve; 211-exhaust hole; 212-first cavity; 2121-first mounting hole; 213-second cavity; 22-first reinforcement plate; 221 -first notch; 222-bending portion; 23-second reinforcing plate; 24-second side panel; 241-third cavity; 242-fourth cavity; 243-second sub-side panel; 2431-fifth cavity; 24311-second mounting hole; 2432-sixth cavity; 25-third reinforcing plate; 251-second notch; 26-fourth reinforcing plate; 27-bottom plate; 28-cover; 29-sealing strip; 3-battery module; 31-battery cell; 32-battery cell explosion-proof valve; 4-insulating plate; 41-guide bevel; 5-adapter plate. DETAILED DESCRIPTION

[0057] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are for illustrative purposes only and are not intended to limit the scope of protection of the present application.

[0058] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the right side and the reverse direction of the X-axis representing the left side. The Y-axis in the accompanying drawings represents the front-to-back position, with the positive direction of the Y-axis representing the front side and the reverse direction of the Y-axis representing the back side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0059] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0060] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by one skilled in the art to which this application belongs. The terms used in this application's specification and claims are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including," "comprising," "having," "having," "containing," and "containing" in the specification and claims of this application and the accompanying drawings are open-ended terms. Thus, "including," "comprising," and "having" refer, for example, to a method or apparatus having one or more steps or elements, but are not limited to having only those one or more elements. The terms "first," "second," and "first" in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a specific order or priority. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features indicated. Thus, a feature designated "first" or "second" may explicitly or implicitly include one or more of the features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0061] It should be noted that the modifications of "one" and "multiple" mentioned in this application are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0062] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0064] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0065] Figure 1 This is one of the structural schematic diagrams of a battery pack according to some embodiments of the present application. Figure 2 for Figure 1 Schematic diagram of the cross-section structure along the GG section line, Figure 3 for Figure 2 The enlarged view of part A in the middle Figure 4 This is one of the schematic diagrams of the explosion structure of a battery pack according to some embodiments of the present application.

[0066] One or more embodiments of the present application disclose a frame structure, which is applied to a battery pack. Figures 1 to 4 The frame structure includes a frame body 2 and a partition 1, wherein the frame body 2 is provided with a chamber, and the partition 1 extends along a first horizontal direction and divides the chamber into at least two independent installation areas; wherein the frame body 2 is provided with independent exhaust channels 210 corresponding to the installation areas one by one, and each exhaust channel 210 is respectively connected to the corresponding installation area; The frame body 2 is configured such that when the battery modules 3 are installed in each installation area, the cell explosion-proof valves 32 of the battery modules 3 provided in the installation areas on both sides of the partition 1 are arranged opposite to each other.

[0067] In at least one embodiment, the frame body 2 may be a shell structure with a chamber provided therein, and the partition 1 may be fixedly installed in the frame body 2 by means of clamping, bolt fasteners, welding, bonding, or the like.

[0068] A plurality of installation areas may be arranged along the second horizontal direction, and the partition 1 is located between adjacent installation areas to isolate the battery modules in the adjacent installation areas.

[0069] The first horizontal direction can be Figure 4 The Y-axis direction in the coordinate system is parallel; the second horizontal direction can be parallel to Figure 4 The X-axis direction in the coordinate system is parallel. If the first horizontal direction refers to the length direction of the frame body 2, the second horizontal direction refers to the width direction of the frame body 2; conversely, if the first horizontal direction refers to the width direction of the frame body 2, the second horizontal direction refers to the length direction of the frame body 2.

[0070] The partition 1 can separate a frame body 2 into two installation areas arranged along the second horizontal direction. At least one battery module 3 is installed in each installation area. Each battery module 3 may include multiple battery cells 31 and multiple battery cell explosion-proof valves 32. Multiple battery cells 31 in the battery module 3 can be arranged along the first horizontal direction. A corresponding battery cell explosion-proof valve 32 is set at the end of each battery cell 31, and the connection terminals of the battery cell 31 and the battery cell explosion-proof valve 32 are at opposite ends of the battery cell 31, so that when the battery cell explosion-proof valve 32 sprays high-pressure gas, high-temperature electrolyte and other fluids, it will not affect the connection terminals of the corresponding battery cell 31, thereby reducing the risk of explosion caused by short circuit at the connection terminals of the battery cell 31.

[0071] The battery cell explosion-proof valves 32 on both sides of the partition 1 are arranged back to back, which can be understood as the battery cell explosion-proof valves 32 of the battery cell units 31 in the two installation areas are all arranged outward. For example, the battery cell explosion-proof valves 32 of each battery cell unit 31 of the battery module 3 in the installation area on the left side of the partition 1 are arranged to the left, and the battery cell explosion-proof valves 32 of each battery cell unit 31 of the battery module 3 in the installation area on the right side of the partition 1 are arranged to the right.

[0072] The frame body is provided with independent exhaust channels corresponding to the installation areas. This means that the frame body 2 is provided with at least two exhaust channels 210 spaced apart along the second horizontal direction. In other words, the at least two exhaust channels 210 of the frame body 2 are independent of each other and communicate with the corresponding installation areas. The explosion-proof valves 32 of the multiple battery cells 31 within each installation area are connected to the corresponding exhaust channels 210, allowing the fluid within a faulty battery cell 31 to be discharged through the explosion-proof valves 32 into the corresponding exhaust channels 210 for pressure relief.

[0073] The battery pack may include a frame structure and a battery module 3. The partition 1 is fixedly installed in the cavity of the frame body 2 to divide the cavity into multiple installation areas. The battery module 3 can be installed in each installation area to isolate the battery modules 3 in adjacent installation areas through the partition 1.

[0074] Among them, each battery module 3 may include multiple battery cells 31 and multiple battery cell explosion-proof valves 32, and a battery cell explosion-proof valve 32 is installed at the end of each battery cell 31; the frame body 2 is provided with two exhaust channels 210 with the same spacing arrangement direction as the two battery modules 3, and each exhaust channel 210 is respectively connected to the corresponding installation area, so that each battery cell explosion-proof valve 32 of the battery module 3 in each installation area is respectively connected to the exhaust channel 210 corresponding to the frame body 2, when some battery cells 31 of the battery module 3 generate high-pressure gas, high-temperature electrolyte and other fluids due to thermal runaway failure, a fault occurs. The battery cell single body 31 discharges the fluid into the corresponding exhaust channel 210 through the corresponding battery cell explosion-proof valve 32 for pressure relief. Since the battery cell explosion-proof valves 32 arranged in the installation area on both sides of the partition 1 are arranged back to back, in other words, the directions of the fluids ejected by the battery cell explosion-proof valves 32 of the two battery modules 3 are opposite, and the two exhaust channels 210 of the frame body 2 are independent of each other, so as to utilize the two independent exhaust channels 210 of the partition 1 and the frame body 2 to limit the fluid, effectively avoiding the faulty battery cell single body 31 from triggering the normally working battery module 3 to lose control, thereby effectively reducing the fault outage range of the battery pack.

[0075] Figure 5 This is one of the structural diagrams of the frame structure according to some embodiments of the present application. Figure 6 This is one of the schematic cross-sectional structural diagrams of the first side panel according to some embodiments of the present application.

[0076] In some embodiments, combined Figure 5 and Figure 6 As shown, the frame body 2 includes two first side panels 21, and the two first side panels 21 are spaced apart along the second horizontal direction; The first side plate 21 is provided with a plurality of exhaust holes 211 and a first exhaust channel 2101 integrated into the first side plate 21 . The exhaust holes 211 communicate with the corresponding installation area and the first exhaust channel 2101 .

[0077] In at least one embodiment, the two first side panels 21 are arranged along the second horizontal direction (eg Figure 5 The first side panels 21 are spaced apart from each other (in the X-axis direction in the coordinate system of ...

[0078] The side wall of the first side plate 21 facing the battery module 3 is provided with a plurality of exhaust holes 211 spaced apart along the first horizontal direction. The number of the exhaust holes 211 can match the number and position of the battery cell explosion-proof valves 32 of the battery cell monomers 31 of the battery module 3. Each battery cell explosion-proof valve 32 is sealed and connected to the exhaust hole 211 corresponding to the first side plate 21 to ensure that the fluid generated by thermal runaway of the battery cell monomer 31 can completely enter the corresponding first exhaust flow channel 2101 through the exhaust hole 211.

[0079] The first side plate 21 may adopt a plate-shaped structure with a hollow interior serving as the first exhaust flow channel 2101 , so that the fluid generated by the battery cell 31 can flow in the first exhaust flow channel 2101 of the first side plate 21 .

[0080] Figure 7 for Figure 5 Magnified view of part B.

[0081] In some embodiments, combined Figure 7 As shown, the first side plate 21 includes a first cavity 212 and a second cavity 213, and the first cavity 212 is connected to the second cavity 213 at its end along the vertical direction; the first cavity 212 is provided with the first exhaust channel 2101 and its outer side wall protrudes toward the installation area.

[0082] In at least one embodiment, the first side plate 21 may include a first cavity 212 and at least one second cavity 213, and the first cavity 212 and the second cavity 213 may be arranged in a vertical direction. If the first side plate 21 includes one second cavity 213, the bottom end of the first cavity 212 along the vertical direction is connected to the second cavity 213; if the first side plate 21 includes two second cavities 213, the two ends of the first cavity 212 along the vertical direction are respectively connected to the corresponding second cavity 213. In other words, the two second cavities 213 are based on Figure 7 The plane formed by the XY axes in the coordinate system has a vertically symmetrical structure.

[0083] The first cavity 212 and the second cavity 213 of the first side plate 21 can be formed by an extrusion molding process.

[0084] The outer side wall of the first cavity 212 can be understood as the side wall of the first cavity 212 away from the battery module 3 .

[0085] The outer wall of the first cavity 212 protrudes toward the installation area. In other words, the outer wall of the first cavity 212 and the outer wall of the second cavity 213 are not in the same plane, and the outer wall of the first cavity 212 protrudes toward the installation area (or the battery module 3). Therefore, the first side plate 21 composed of multiple cavities can be used to improve the stiffness of the first side plate 21 along the vertical direction and the second horizontal direction, reduce the possibility of deformation of the frame structure, and accordingly extend the service life of the frame structure. It can also resist impact from outside the battery pack and protect the battery module 3 in the frame structure.

[0086] In some embodiments, combined Figure 5 and Figure 7 As shown, the exhaust channel 210 further includes a first explosion relief valve 2102 , which is fixed to the outer side wall of the first side plate 21 and communicates with the first exhaust flow channel 2101 .

[0087] In at least one embodiment, the first explosion relief valve 2102 can be installed in the following manner. For example, a first mounting hole 2121 can be opened in the first cavity 212, and the first explosion relief valve 2102 can be fixedly installed in the first mounting hole 2121 of the first cavity 212 in a sealed and embedded manner to achieve a fixed connection operation between the first explosion relief valve 2102 and the first side plate 21.

[0088] Since the outer wall of the first cavity 212 protrudes toward the installation area relative to the second cavity 213, and the first explosion-relief valve 2102 is fixed to the outer wall of the first cavity 212 which is concavely set in the first side plate 21, the first explosion-relief valve 2102 is hidden and installed relative to the first side plate 21, thereby saving the outer contour space of the battery pack and improving the product energy density of the battery pack.

[0089] Since the first exhaust flow channel 2101 is connected to the first explosion relief valve 2102, when some of the battery cells 31 of the battery module 3 on the left side thermally run away, the gas, electrolyte and other fluids generated by the thermal runaway are depressurized and released. The fluid in the battery cell 31 enters the first exhaust flow channel 2101 through the battery cell explosion-proof valve 32 and the exhaust hole 211 of the first cavity 212 of the first side plate 21 on the left, so that the fluid release channel path is smooth. The fluid generated by the battery cell 31 only accumulates and remains in the first exhaust channel 2101 of the corresponding first side plate 21. When the gas in the first exhaust channel 2101 reaches a certain pressure, it is discharged from the frame structure of the battery pack through the first explosion relief valve 2102 to achieve the purpose of rapid pressure relief; the fluid generated by thermal runaway will not escape to the battery module 3 in another installation area due to the partition 1 and the first exhaust channel 2101 of the two independent first side plates 21, which solves the problem that the outage of one battery module 3 may easily cause the outage of another battery module 3 next door, avoids aggravating the thermal runaway of the battery module 3, avoids the sudden explosion of thermal runaway of the battery cell, and achieves the purpose of safe use of the battery pack.

[0090] Figure 8 for Figure 6 The enlarged view of part C in the middle Figure 9 This is the second schematic diagram of the cross-sectional structure of the first side panel according to some embodiments of the present application.

[0091] In some embodiments, combined Figure 8 and Figure 9 As shown, the frame body 2 further includes a plurality of first reinforcing plates 22 , and the first exhaust flow channel 2101 is provided with a plurality of first reinforcing plates 22 arranged vertically at intervals. The plurality of first reinforcing plates 22 separate the first exhaust flow channel 2101 into a plurality of independent first pressure relief spaces 21011 ; At least part of the first reinforcing plate 22 is provided with a through first notch 221 at a position corresponding to the exhaust hole 211 , so that the exhaust hole 211 is connected to the corresponding first pressure relief space 21011 through the first notch 221 .

[0092] In at least one embodiment, the first reinforcing plate 22 may be a straight plate structure, or may be in other shapes such as an arc-shaped plate structure, or may be a combined structure of at least two plates arranged at an angle.

[0093] For example, if the number of the first reinforcing plates 22 in the first cavity 212 is less than the number of the first pressure relief spaces 21011, for example, if the number of the first reinforcing plates 22 in the first cavity 212 is three, the number of the first pressure relief spaces 21011 may be four (see FIG. Figure 9 shown).

[0094] The frame body 2 may include a plurality of first reinforcing plates 22, and the plurality of first reinforcing plates 22 may be arranged in the first cavity 212 at intervals along the vertical direction. Each first reinforcing plate 22 may extend along the first horizontal direction, not only dividing the first exhaust channel 2101 of the first cavity 212 into a plurality of first pressure relief spaces 21011, so as to increase the number of pressure relief channels for the fluid generated by thermal runaway of the battery cell 31 entering the first cavity 212 through the exhaust hole 211, so that the fluid pressure of the battery cell 31 is quickly reduced, thereby reducing the risk of explosion, and the plurality of first reinforcing plates 22 arranged at intervals along the vertical direction may also increase the mechanical stiffness of the first side plate 21 along the second horizontal direction and the vertical direction, thereby reducing the risk of deformation of the first side plate 21, and correspondingly extending the service life of the frame structure.

[0095] A first notch 221 is opened on the first reinforcing plate 22 in the first cavity 212 at a position corresponding to the exhaust hole 211, so that the fluid discharged from the battery cell 31 during thermal runaway can pass through the battery cell explosion-proof valve 32 and the exhaust hole 211 in sequence and then be diverted at the first notch 221 to enter the first pressure relief space 21011 on different sides of the first reinforcing plate 22, thereby increasing the cross-section of the exhaust path of the fluid generated by the battery cell 31 to improve the exhaust smoothness of the fluid.

[0096] In some embodiments, combined Figure 8 As shown, at least a portion of the first reinforcing plate 22 is provided with a bent portion 222 at a position corresponding to the exhaust hole 211 .

[0097] In at least one embodiment, a bent portion 222 may be provided at a corresponding position of the exhaust hole 211 on at least a portion of the first reinforcing plates 22 . The bent portion 222 may be formed by chamfering the first reinforcing plate 22 , and the bent portion 222 may be a part of the first reinforcing plate 22 .

[0098] Since a large amount of fluid is generated by the battery cell 31 during thermal runaway, the fluid pressure in the battery pack is relatively high. The side walls of the cavities of the first side plate 21 are instantly subjected to huge impact pressure, and deformation is easily generated at the weak structural strength of the first side plate 21. Therefore, by providing a bent portion 222 at the corresponding positions of at least a part of the first reinforcing plates 22 and the exhaust holes 211, stress concentration on the first reinforcing plates 22 by the fluid entering the first cavity 212 can be avoided. If the bend 222 is not chamfered to form the chamfer, when the external force of the fluid is relatively large, the frame structure of the entire battery pack will crack preferentially from the right-angled position. Therefore, chamfering the corresponding positions of the first reinforcing plates 22 and the exhaust holes 211 can effectively reduce or even avoid the risk of deformation and cracking of the frame structure.

[0099] In some embodiments, combined Figure 9As shown, the frame body 2 further includes a second reinforcing plate 23 , and the second reinforcing plate 23 is fixed in the second cavity 213 .

[0100] In at least one embodiment, at least one second reinforcing plate 23 may be disposed in the second cavity 213 of the first side plate 21 , and each second reinforcing plate 23 may extend along the first horizontal direction. Each second reinforcing plate 23 may be spaced apart in the vertical direction, or may be disposed at an angle to each other.

[0101] The first side plate 21 can be extruded to form the first cavity 212, the second cavity 213 and the reinforcing plates in each cavity, thereby effectively improving the structural strength of the entire first side plate 21 and making the first side plate 21 less prone to deformation.

[0102] In some embodiments, combined Figure 5 As shown, the frame body 2 further includes a second side plate 24 , which is fixed between the two first side plates 21 ; and both ends of the partition 1 are fixedly connected to the corresponding second side plates 24 .

[0103] In at least one embodiment, the frame body 2 may include two second side panels 24, the two second side panels 24 may be arranged at intervals along the first horizontal direction, each second side panel 24 may extend along the second horizontal direction, each second side panel 24 is arranged between the two first side panels 21, and the two ends of the second side panels 24 along the second horizontal direction may be fixedly connected to the corresponding first side panels 21 by welding, bonding, clamping, bolt fasteners, etc.

[0104] The partition plate 1 can be installed between the two second side plates 24 , and both ends of the partition plate 1 along the first horizontal direction can be fixedly connected to the corresponding second side plates 24 .

[0105] The two first side panels 21 are arranged at intervals along the second horizontal direction, and the two second side panels 24 are arranged at intervals along the first horizontal direction, and can form a rectangular frame structure; the area between the rectangular frame structures is a chamber, and the partition 1 extending along the first horizontal direction is fixed in the rectangular frame structure to separate the chamber into two installation areas, and battery modules 3 are installed in each installation area to isolate adjacent battery modules 3 through the partition 1 to prevent the fluid generated by the thermal runaway of one battery module 3 from triggering the runaway of another adjacent battery module 3, thereby achieving isolation protection for each battery module 3.

[0106] Figure 10 Schematic diagram of the structure of the second side panel according to some embodiments of the present application.

[0107] In some embodiments, combined Figure 10As shown, the second side plate 24 includes a third cavity 241 and a fourth cavity 242 , and the end of the third cavity 241 along the vertical direction is connected to the fourth cavity 242 ; An outer sidewall of the fourth cavity 242 is convex relative to the third cavity 241 and is disposed away from the installation area.

[0108] In at least one embodiment, the second side plate 24 may include a third cavity 241 and at least one fourth cavity 242, and the third cavity 241 and the fourth cavity 242 may be arranged in a vertical direction. If the second side plate 24 includes one fourth cavity 242, the bottom end of the third cavity 241 along the vertical direction is connected to the top end of the fourth cavity 242; if the second side plate 24 includes two fourth cavities 242, the two ends of the third cavity 241 along the vertical direction are respectively connected to the corresponding fourth cavity 242. In other words, the two fourth cavities 242 are based on Figure 10 The plane formed by the XY axes in the coordinate system has a vertically symmetrical structure.

[0109] The third cavity 241 and the fourth cavity 242 of the second side plate 24 can be formed by an extrusion molding process.

[0110] The outer side wall of the fourth cavity 242 can be understood as the side wall of the fourth cavity 242 away from the battery module 3 .

[0111] The outer side wall of the fourth cavity 242 of the second side plate 24 may be stepped and beveled to improve the structural strength of the bottom of the second side plate 24 when the second side plate 24 is subjected to the expansion force of the battery cell 31 , such as during charging.

[0112] The outer wall of the fourth cavity 242 is convex relative to the third cavity 241 in a direction away from the installation area. In other words, the outer wall of the fourth cavity 242 and the outer wall of the third cavity 241 are not in the same plane, and the outer wall of the fourth cavity 242 is convex in a direction away from the installation area (or the battery module 3). Therefore, the second side plate 24 composed of multiple cavities can be used to improve the stiffness of the second side plate 24 in the vertical direction and the first horizontal direction, so that during the charging and discharging process of the battery module 3, the fourth cavity 242 of the second side plate 24 can be used to provide a reverse force. The fourth cavity 242 plays a role in structural reinforcement and reduces the deformation of the second side plate 24.

[0113] Figure 11 This is a second structural diagram of a frame structure according to some embodiments of the present application. Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure along the HH section line, Figure 13 This is the second schematic diagram of the explosion structure of the battery pack according to some embodiments of the present application.

[0114] In some embodiments, combined Figures 11 to 13 As shown, the second side plate 24 includes at least two second sub-side plates 243 spaced apart along the second horizontal direction, and the second sub-side plates 243 are fixedly connected to the partition 1; The exhaust channel 210 also includes a second exhaust channel 2103 and a second explosion relief valve 2104. Each second sub-side plate 243 is respectively provided with a second exhaust channel 2103. Each second exhaust channel 2103 is connected to the first exhaust channel 2101 of the corresponding first side plate 21, and the second explosion relief valve 2104 is connected to the second exhaust channel 2103.

[0115] In at least one embodiment, the end of the partition 1 along the first horizontal direction is connected to at least one second side panel 24 , and the second side panel 24 can be separated into two second sub-side panels 243 . In other words, at least one second side panel 24 includes two second sub-side panels 243 .

[0116] The second sub-side plate 243 and the partition plate 1 can be fixedly connected by welding, bonding, bolt fasteners, etc.

[0117] The second exhaust channel 2103 may be provided inside each second sub-side plate 243 , so the second sub-side plate 243 may be a cavity structure with the second exhaust channel 2103 provided therein.

[0118] The second exhaust channel 2103 of the second sub-side plate 243 on one side of the partition 1, for example, the left side, is connected to the first exhaust channel 2101 of the first side plate 21 on the left side, and the second exhaust channel 2103 of the second sub-side plate 243 on the other side of the partition 1, for example, the right side, is connected to the first exhaust channel 2101 of the first side plate 21 on the right side, thereby increasing the exhaust path length of the fluid generated by the battery cell 31 entering the frame body 2, so as to accelerate the pressure reduction speed of the fluid generated by the battery cell 31 and reduce the explosion risk of the battery cell 31.

[0119] A second explosion relief valve 2104 can be fixedly installed on the side wall of each second sub-side panel 243 away from the battery module 3. When the pressure of the second exhaust channel 2103 of the second sub-side panel 243 increases to the threshold value of the second explosion relief valve 2104, the second explosion relief valve 2104 opens, and the second exhaust channel 2103 is connected to the second explosion relief valve 2104 to discharge the fluid generated by the battery cell 31 to the outside of the frame structure.

[0120] Figure 14 Schematic diagram of the explosion structure of the second sub-side plate and the second explosion relief valve according to some embodiments of the present application.

[0121] In some embodiments, combined Figure 14As shown, the second sub-side plate 243 includes a fifth cavity 2431 and a sixth cavity 2432. The end of the fifth cavity 2431 in the vertical direction is connected to the sixth cavity 2432. The fifth cavity 2431 is provided with the second exhaust flow channel 2103. An outer wall of the fifth cavity 2431 protrudes toward the installation area relative to the sixth cavity 2432 .

[0122] In at least one embodiment, the second sub-side plate 243 may include a fifth cavity 2431 and at least one sixth cavity 2432, and the fifth cavity 2431 and the sixth cavity 2432 may be arranged in a vertical direction. If the second sub-side plate 243 includes one sixth cavity 2432, the bottom end of the fifth cavity 2431 along the vertical direction is connected to the sixth cavity 2432; if the second sub-side plate 243 includes two sixth cavities 2432, the two ends of the fifth cavity 2431 along the vertical direction are respectively connected to the corresponding sixth cavity 2432. In other words, the two sixth cavities 2432 are based on Figure 14 and Figure 15 The plane formed by the XY axes in the coordinate system is symmetrical in the vertical direction.

[0123] The fifth cavity 2431 and the sixth cavity 2432 of the second side plate 24 can be formed by an extrusion molding process.

[0124] The outer side wall of the fifth cavity 2431 can be understood as the side wall of the fifth cavity 2431 away from the battery module 3 .

[0125] The outer wall of the sixth cavity 2432 of the second sub-side plate 243 may be stepped and beveled to improve the structural strength of the bottom of the second sub-side plate 243 when the second sub-side plate 243 is subjected to the expansion force of the battery cell 31 , such as during charging.

[0126] The outer wall of the fifth cavity 2431 protrudes toward the installation area relative to the sixth cavity 2432. In other words, the outer wall of the fifth cavity 2431 and the outer wall of the sixth cavity 2432 are not in the same plane, and the outer wall of the fifth cavity 2431 protrudes toward the installation area (or the battery module 3). Therefore, the second sub-side plate 243 composed of multiple cavities can be used to improve the stiffness of the second sub-side plate 243 along the vertical direction and the first horizontal direction, so that during the charging and discharging process of the battery module 3, the sixth cavity 2432 of the second sub-side plate 243 can be used to provide a reverse force. The sixth cavity 2432 plays a role of structural reinforcement, reduces the deformation of the second side plate 24, and correspondingly extends the service life of the frame structure. It can also resist impact from outside the battery pack and protect the battery module 3 in the frame structure.

[0127] In some embodiments, combined Figure 14As shown, the second explosion relief valve 2104 is fixed to the outer wall of the fifth cavity 2431 .

[0128] In at least one embodiment, the second explosion relief valve 2104 can be installed in the following manner. For example, a second mounting hole 24311 can be opened in the fifth cavity 2431, and the second explosion relief valve 2104 can be fixedly installed in the second mounting hole 24311 of the fifth cavity 2431 in a sealed and embedded manner to achieve a fixed connection operation between the second explosion relief valve 2104 and the second sub-side plate 243.

[0129] Since the outer wall of the fifth cavity 2431 protrudes toward the battery module 3 relative to the sixth cavity 2432, and the second explosion relief valve 2104 is fixed to the outer wall of the fifth cavity 2431 which is concavely arranged in the second sub-side plate 243, the second explosion relief valve 2104 is hiddenly installed relative to the second sub-side plate 243, thereby saving the outer contour space of the battery pack and improving the product energy density of the battery pack.

[0130] In some embodiments, combined Figure 14 As shown, the frame body 2 also includes a plurality of third reinforcing plates 25 , and a plurality of the third reinforcing plates 25 are vertically spaced and arranged in the second exhaust channel 2103 . The plurality of third reinforcing plates 25 separate the second exhaust channel 2103 into a plurality of second pressure relief spaces 21031 .

[0131] In at least one embodiment, the third reinforcing plate 25 may be a straight plate structure, or may be in other shapes such as an arc-shaped plate structure, or may be a combined structure of at least two plates arranged at an angle.

[0132] For example, if the number of the third reinforcing plates 25 in the fifth cavity 2431 is less than the number of the second pressure relief spaces 21031, for example, if the number of the third reinforcing plates 25 in the fifth cavity 2431 is three, the number of the second pressure relief spaces 21031 may be four (see FIG. Figure 14 and Figure 15 shown).

[0133] The frame body 2 may include a plurality of third reinforcing plates 25, and the plurality of third reinforcing plates 25 may be arranged in the fifth cavity 2431 at intervals along the vertical direction. Each fifth reinforcing plate 12 may extend along the second horizontal direction, not only dividing the second exhaust channel 2103 of the fifth cavity 2431 into a plurality of second pressure relief spaces 21031, so as to increase the number of pressure relief channels for the fluid generated by thermal runaway of the battery cell 31 entering the fifth cavity 2431 through the exhaust hole 211, so that the fluid pressure of the battery cell 31 is quickly reduced, thereby reducing the risk of explosion, but also the plurality of third reinforcing plates 25 arranged at intervals along the vertical direction can also increase the mechanical stiffness of the second sub-side plate 243 along the first horizontal direction and the vertical direction, reduce the risk of deformation of the second sub-side plate 243, and accordingly extend the service life of the frame structure.

[0134] Figure 15 Schematic diagram of the cross-sectional structure of the second sub-side panel according to some embodiments of the present application.

[0135] In some embodiments, combined Figure 15 As shown, at least part of the third reinforcing plate 25 is provided with a penetrating second notch 251 at a position corresponding to the second explosion relief valve 2104 , so that at least part of the second pressure relief space 21031 is connected to the second explosion relief valve 2104 through the second notch 251 .

[0136] In at least one embodiment, the position of the second notch 251 of the third reinforcing plate 25 may correspond to the position of the second mounting hole 24311 (or the second explosion relief valve 2104 ), so that each second pressure relief space 21031 can be connected to the second explosion relief valve 2104 through the second notch 251 .

[0137] By opening a second notch 251 on the third reinforcing plate 25 in the fifth cavity 2431 at a position corresponding to the second explosion relief valve 2104, the fluid discharged from the battery cell 31 during thermal runaway can be diverted at the first notch 221 after passing through the battery cell explosion-proof valve 32 and the exhaust hole 211, and enter the first pressure relief space 21011 on different sides of the first reinforcing plate 22, and communicate with the first exhaust flow channel 2101 through the second exhaust flow channel 2103, so that each second pressure relief space 21031 is respectively connected to each corresponding first pressure relief space 21011. The fluid in the first pressure relief space 21011 enters the second pressure relief space 21031 of the corresponding second sub-side plate 243, and then flows to the second explosion relief valve 2104 through the second gap 251. When the pressure in the second exhaust flow channel 2103 exceeds the pressure threshold of the second explosion relief valve 2104, the fluid in the exhaust channel 210 of the frame body 2 is discharged from the second explosion relief valve 2104, so as to increase the cross-section, length and number of exhaust paths of the fluid generated for the battery cell 31, and further improve the exhaust smoothness of the fluid.

[0138] In some embodiments, combined Figure 14 As shown, the frame body 2 further includes a fourth reinforcing plate 26 , and the fourth reinforcing plate 26 is fixed in the sixth cavity 2432 .

[0139] In at least one embodiment, at least one fourth reinforcing plate 26 may be disposed in the sixth cavity 2432 of the second sub-side plate 243 , and each fourth reinforcing plate 26 may extend along the second horizontal direction. Each fourth reinforcing plate 26 may be arranged at intervals along the vertical direction, or may be arranged at an angle to each other.

[0140] The second sub-side plate 243 can be extruded to form a fifth cavity 2431, a sixth cavity 2432 and reinforcing plates in each cavity, thereby effectively improving the structural strength of the entire second sub-side plate 243 and making the second sub-side plate 243 less prone to deformation.

[0141] Figure 16 This is a third structural diagram of a frame structure according to some embodiments of the present application. Figure 17 for Figure 16 Magnified view of part D.

[0142] In some embodiments, combined Figure 16 and Figure 17 As shown, the partition 1 includes a partition body 11 and a plurality of fifth reinforcing plates 12. The partition body 11 is a shell structure with a cavity inside and open ends. The plurality of fifth reinforcing plates 12 are fixed in the cavity at intervals along the vertical direction.

[0143] In at least one embodiment, a plurality of fifth reinforcing plates 12 may be provided in the shell structure of the partition body 11. The plurality of fifth reinforcing plates 12 may be spaced apart in the vertical direction, and the fifth reinforcing plates 12 may extend in the first horizontal direction. Figure 17 The plane formed by the XY axes of the coordinate system is parallel to, or is set at an angle to, the stiffness of the partition 1 along the vertical direction and along the second horizontal direction can be improved, which not only improves the service life of the partition 1, but also can cooperate with the first side plate 21 and the second sub-side plate 243 to improve the protection effect on the battery module 3.

[0144] In some embodiments, combined Figure 17 As shown, the partition 1 further includes a sealing plate 13 , and the sealing plate 13 is sealedly connected to the end opening of the partition body 11 .

[0145] In at least one embodiment, an end opening may be preset at the end of the partition body 11 along the first horizontal direction to facilitate processing the interior of the partition 1 to form a shell structure with a cavity and the fifth reinforcing plate 12 inside.

[0146] The sealing plate 13 and the end opening of the partition body 11 can be sealed and connected by bonding, welding, etc., which can prevent water vapor outside the battery pack from flowing along the cavity of the partition body 11 to the front end of the partition 1, thereby achieving sealed protection for the battery pack.

[0147] Figure 18 Schematic diagram of the exploded structure of the frame body and the partition according to some embodiments of the present application. Figure 19 for Figure 18 Enlarged view of part E.

[0148] In some embodiments, combined Figure 18 and Figure 19 As shown, the end of the partition 1 away from the second explosion relief valve 2104 is clamped with the corresponding second side plate 24.

[0149] In at least one embodiment, the end of the partition 1 away from the second explosion relief valve 2104 can be clamped with the second side plate 24 in the following manner. For example, a clamping slot 111 is opened at the lower part of the end of the partition 1 away from the second explosion relief valve 2104, so that the partition 1 is clamped with the second side plate 24 at the clamping slot 111. In this way, the clamping method of the two can be used to not only reduce the tilt amplitude of the partition 1 along the second horizontal direction, but also the second side plate 24 can be upper-limited from above by the partition 1, thereby further improving the assembly stability of the partition 1 and the frame body 2.

[0150] In some embodiments, combined Figure 13 As shown, the frame body 2 further includes a bottom plate 27 , and the ends of the first side plate 21 and the second side plate 24 along the vertical direction are fixedly connected to the bottom plate 27 respectively.

[0151] In at least one embodiment, the ends of the first side plate 21 and the second side plate 24 in the vertical direction, such as the bottom ends, can be fixedly connected to the bottom plate 27 by welding or bonding. The battery module 3 is installed in the installation area of ​​the frame body 2 and is connected to the bottom plate 27 so that the bottom plate 27 can support the battery module 3 from below.

[0152] In addition, the frame body 2 also includes a cover body 28 and a sealing strip 29. The cover body 28 and the base plate 27 can be arranged opposite to each other and spaced apart in the vertical direction. The cover plate can be fixedly connected to the first side plate 21 and the second side plate 24 by multiple bolt fasteners to encapsulate the battery module 3 in the frame structure from above the battery module 3.

[0153] A sealing strip 29 is provided between the top ends of the first side plate 21 and the second side plate 24 and the cover body 28 to improve the sealing effect between the cover body 28 and the first side plate 21 and the second side plate 24, reduce the intrusion of external impurities such as dust and water vapor into the frame structure, and correspondingly reduce the risk of failure of the battery module 3.

[0154] Figure 20 Schematic diagram of the partial structure of a battery pack according to some embodiments of the present application.

[0155] One or more embodiments of the present application also disclose a battery pack. Figure 2 、 Figure 4 、 Figure 13 and Figure 20 As shown, the battery pack includes a battery module 3 and the frame structure described in the above embodiment, and the battery module 3 is installed in the installation area of ​​the frame structure, wherein the cell explosion-proof valve 32 of each battery module is connected to the corresponding exhaust channel 210.

[0156] In at least one embodiment, at least one battery module 3 is installed in each installation area of ​​the frame structure. Each battery module 3 may include a plurality of battery cells 31 , and the battery cells 31 may be electrically connected in series or parallel.

[0157] The beneficial effects of the battery pack of this embodiment relative to the related art are the same as those of the above-mentioned frame structure and will not be repeated here.

[0158] Figure 21 Schematic diagram of a partial explosion structure of a battery pack according to some embodiments of the present application.

[0159] In some embodiments, combined Figure 21 As shown, the battery pack further includes an insulating plate 4, and the insulating plate 4 is fixed between the end of the battery module 3 along the first horizontal direction and the frame body 2 of the frame structure.

[0160] In at least one embodiment, the insulating plate 4 may be a plate-shaped structure made of insulating material.

[0161] By fixing the insulating plate 4 between the end of the battery module 3 along the first horizontal direction and the frame body 2, the insulating plate 4 not only increases the insulation effect between the battery module 3 and the frame body 2, but also reduces the risk of the frame structure scratching the battery cell 31 of the battery module 3.

[0162] Figure 22 for Figure 21 Magnified view of part F.

[0163] In some embodiments, combined Figure 22 As shown, the side wall of the insulating plate 4 away from the battery module 3 is provided with a guide bevel 41 .

[0164] In at least one embodiment, the side wall of the insulating plate 4 away from the battery module 3 refers to a side wall of the insulating plate 4 along the first horizontal direction, and the side wall is away from the battery module 3 .

[0165] The guide angle 41 can be understood as the thickness of the insulating plate 4 gradually increasing from the bottom to the middle area or the top. The thickness of the insulating plate 4 refers to the dimension of the insulating plate 4 along the first horizontal direction.

[0166] Since the side wall of the insulating plate 4 away from the battery module 3 is provided with a guiding angle 41, the guiding angle 41 can guide the insulating plate 4 and the battery module 3 to be installed together in the frame structure, thereby improving the assembly convenience of the battery module 3 and the insulating plate 4 to the frame structure.

[0167] In some embodiments, the battery pack further includes a buffer structure, and the buffer structure is fixed between the end of the battery module 3 along the first horizontal direction and the frame body 2 of the frame structure.

[0168] In at least one embodiment, the buffer structure may be a plate-shaped structure made of a flexible material, such as rubber, silicone, foam, or the like.

[0169] By fixing the buffer structure between the end of the battery module 3 along the first horizontal direction and the frame body 2, the buffer structure avoids hard contact between the battery module 3 and the frame body 2, thereby providing safety protection for the battery module 3 during transportation of the battery pack or during normal charging and discharging.

[0170] In some embodiments, the battery pack further includes a thermally conductive structural adhesive, and the battery module 3 is fixed to the bottom plate 27 of the frame structure through the thermally conductive structural adhesive.

[0171] In at least one embodiment, by arranging a thermally conductive structural adhesive between the bottom of the battery module 3 and the bottom plate 27 of the frame structure, the battery module 3 can be firmly fixed by relying on the viscosity of the thermally conductive structural adhesive after the adhesive is cured, thereby ensuring the stability of the battery module 3 in the battery pack, and also increasing the heat conduction effect between the battery module 3 and the bottom plate 27 of the frame structure, thereby ensuring the heat dissipation and cooling effect of the battery module 3.

[0172] Combine Figure 5 and Figure 13 As shown, the battery pack also includes an adapter plate 5, on which a connector is provided. The connector can be used to electrically connect the battery module 3 in the battery pack with an external electronic device such as a monitoring device (including but not limited to collecting electrical parameters such as voltage, current, etc., temperature and humidity parameters).

[0173] One or more embodiments of the present application further disclose an electrical device, which includes the frame structure described in the above embodiment, or includes the battery pack described in the above embodiment.

[0174] Specifically, the electrical equipment may be an electric vehicle, an energy storage system, etc., and the energy storage system may be an energy storage cabinet or an energy storage container.

[0175] The beneficial effects of the electrical equipment of this embodiment relative to the related art are the same as those of the above-mentioned frame structure or battery pack, and will not be repeated here.

[0176] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A frame structure, applied to a battery pack, characterized in that: include a frame body having a cavity, and a partition extending along a first horizontal direction and dividing the chamber into at least two independent installation areas; The frame body is provided with independent exhaust channels corresponding to the installation areas one by one, and each exhaust channel is communicated with the corresponding installation area; The frame body is configured such that when the battery modules are installed in the respective installation areas, the explosion-proof valves of the battery cells of the battery modules are arranged opposite to each other in the installation areas on both sides of the partition.

2. The frame structure according to claim 1, characterized in that: The frame body includes two first side panels, and the two first side panels are spaced apart along the second horizontal direction; The first side plate is provided with a plurality of exhaust holes and a first exhaust flow channel integrated in the first side plate, and the exhaust holes are connected with the corresponding installation area and the first exhaust flow channel.

3. The frame structure according to claim 2, characterized in that: The first side plate includes a first cavity and a second cavity, and the end of the first cavity in the vertical direction is connected to the second cavity; the first cavity is provided with the first exhaust channel and its outer side wall protrudes toward the installation area.

4. The frame structure according to claim 2, characterized in that: The exhaust passage further includes a first explosion relief valve, which is fixed to the outer side wall of the first side plate and communicates with the first exhaust flow channel.

5. The frame structure according to claim 3, characterized in that: A plurality of first reinforcement plates are arranged vertically and spaced apart in the first exhaust flow channel, and the plurality of first reinforcement plates divide the first exhaust flow channel into a plurality of independent first pressure relief spaces; At least part of the first reinforcing plates is provided with a through first notch at a position corresponding to the exhaust hole, so that the exhaust hole is communicated with the corresponding first pressure relief space through the first notch.

6. The frame structure according to claim 5, characterized in that: At least part of the first reinforcing plate is provided with a bent portion at a position corresponding to the exhaust hole.

7. The frame structure according to claim 3, characterized in that: The frame body further includes a second reinforcing plate, and the second reinforcing plate is fixed in the second cavity.

8. The frame structure according to claim 4, characterized in that: The frame body further includes a second side plate, which is fixed between the two first side plates; and both ends of the partition are fixedly connected to the corresponding second side plates.

9. The frame structure according to claim 8, characterized in that: The second side plate includes a third cavity and a fourth cavity, and an end portion of the third cavity in the vertical direction is connected to the fourth cavity; The outer side wall of the fourth cavity is convex relative to the third cavity toward a direction away from the installation area.

10. The frame structure according to claim 8, characterized in that: The second side panel comprises at least two second sub-side panels spaced apart along the second horizontal direction, and the second sub-side panels are fixedly connected to the partition panel; The exhaust channel also includes a second exhaust flow channel and a second explosion relief valve. Each second sub-side plate is respectively provided with the second exhaust flow channel, each second exhaust flow channel is connected to the first exhaust flow channel of the corresponding first side plate, and the second explosion relief valve is connected to the second exhaust flow channel.

11. The frame structure according to claim 10, characterized in that: The second sub-side plate includes a fifth cavity and a sixth cavity, wherein an end portion of the fifth cavity in the vertical direction is connected to the sixth cavity; the fifth cavity is provided with the second exhaust flow channel; The outer side wall of the fifth cavity protrudes toward the installation area relative to the sixth cavity.

12. The frame structure according to claim 11, characterized in that: The second explosion relief valve is fixed to the outer side wall of the fifth cavity.

13. The frame structure according to claim 11, characterized in that: A plurality of third reinforcing plates are vertically spaced apart and arranged in the second exhaust flow channel. The plurality of third reinforcing plates divide the second exhaust flow channel into a plurality of independent second pressure relief spaces.

14. The frame structure according to claim 13, characterized in that: At least part of the third reinforcing plates is provided with a penetrating second notch at a position corresponding to the second explosion relief valve, so that at least part of the second pressure relief space is communicated with the second explosion relief valve through the second notch.

15. The frame structure according to claim 11, characterized in that: The frame body further includes a fourth reinforcing plate, and the fourth reinforcing plate is fixed in the sixth cavity.

16. The frame structure according to claim 10, characterized in that The partition includes a partition body and a plurality of fifth reinforcing plates. The partition body is a shell structure with a cavity inside and open ends. The plurality of fifth reinforcing plates are fixed in the cavity at intervals along the vertical direction.

17. The frame structure according to claim 16, characterized in that: The partition further includes a sealing plate, which is sealed and connected to the end opening of the partition body.

18. The frame structure according to claim 10, characterized in that The end of the partition away from the second explosion relief valve is clamped with the corresponding second side plate.

19. The frame structure according to claim 8, characterized in that The frame body further includes a bottom plate, and ends of the first side plate and the second side plate in the vertical direction are respectively fixedly connected to the bottom plate.

20. A battery pack, characterized in that: include The frame structure according to any one of claims 1 to 19; and The battery module is installed in the installation area of ​​the frame structure. Wherein, the cell explosion-proof valve of each battery module is connected to the corresponding exhaust channel.

21. The battery pack according to claim 20, characterized in that: Also includes an insulating plate fixed between an end portion of the battery module along a first horizontal direction and the frame body of the frame structure, wherein a guide angle is provided on a side wall of the insulating plate away from the battery module; and / or a buffer structure, fixed between the end of the battery module along the first horizontal direction and the frame body; and / or thermally conductive structural adhesive, used to fix the battery module to the bottom plate of the frame structure.

22. An electrical device, characterized in that: The frame structure comprises the frame structure according to any one of claims 1 to 19, or the battery pack comprises the battery pack according to any one of claims 20 to 21.

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