Battery frame, battery pack and vehicle

Abstract

The utility model discloses a battery frame, battery pack and vehicle, battery frame includes frame and be provided a plurality of beam body in the frame, the plurality of beam body is arranged along the interval of first direction, the frame and the plurality of beam body together define a plurality of holding cavity that the battery cell is held, the beam body is provided with first exhaust chamber, the first exhaust chamber is provided with second exhaust chamber, the beam body is provided with second exhaust chamber. The side face, opposite to the first direction, in the beam body is provided with receding holes communicated with the first exhaust cavities, the receding holes correspond to first anti-explosion valves in the battery cells contained in the containing cavities in a one-to-one mode and are oppositely arranged, the frame is provided with a second exhaust cavity, and the second exhaust cavity is communicated with all the first exhaust cavities. And a second anti-explosion valve communicated with the second exhaust cavity is mounted on the peripheral surface of the frame. The battery frame provided by the utility model effectively prevents high-temperature gas generated during thermal runaway of the battery cell from entering the areas where the high-low voltage copper bars and the wire harnesses are located, and further has the advantages of low electrical short circuit and arcing risks and low thermal diffusion risk.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a battery frame, a battery pack and a vehicle. Background Art

[0002] In the related art, some battery cells have explosion-proof valves set on the top cover of the battery cells, that is, the explosion-proof valves are set upward. At this time, the high-temperature gas generated when the battery cells in the battery pack have thermal runaway is in the same area as the high- and low-voltage copper bars and wiring harnesses in the battery pack. The high-temperature gas may cause the electrical insulation to melt, break, etc., thereby causing electrical short circuits or arcing, which makes the thermal diffusion risk of thermal runaway of the battery cells high. There are also battery cells that have explosion-proof valves set on the bottom wall of the battery cell shell, that is, the explosion-proof valves are set downward, but the area below the battery cell in the battery pack is still connected to the area above the battery cell where the high- and low-voltage copper bars and wiring harnesses are set. The high-temperature gas generated by the thermal runaway of the battery cell is easy to flow back to the area where the high- and low-voltage copper bars and wiring harnesses are located, which is also easy to cause the electrical insulation to melt, break, etc., and there is also the defect of high thermal diffusion risk of thermal runaway of the battery cell. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model proposes a battery frame, which effectively prevents the high-temperature gas generated during thermal runaway of the battery cell from entering the area where the high and low voltage copper bars and wiring harnesses are located, thereby having the advantages of low risk of electrical short circuit and arcing, and low risk of heat diffusion.

[0005] An embodiment of the present invention further provides a battery pack.

[0006] An embodiment of the present utility model further provides a vehicle.

[0007] The battery frame of the utility model embodiment includes a frame and a plurality of beams arranged in the frame, the plurality of beams are arranged at intervals along a first direction, the frame and the plurality of beams jointly define a housing cavity for accommodating a plurality of power cells, wherein the beam has a first exhaust cavity, and a side of the beam opposite to the first direction is provided with an avoidance hole connected to the first exhaust cavity, the avoidance hole corresponds to a first explosion-proof valve in the battery cell accommodated in the housing cavity one by one and is arranged relatively, the frame has a second exhaust cavity, the second exhaust cavity is connected to all the first exhaust cavities, and a second explosion-proof valve connected to the second exhaust cavity is installed on the outer peripheral surface of the frame.

[0008] According to the battery frame of the embodiment of the utility model, the multiple accommodating cavities defined by the frame and the multiple beams can accommodate the battery cells, and the first explosion-proof valve on the battery cells can be opposite to the avoidance hole on the beam. At this time, after the high-temperature gas generated by thermal runaway of the battery cell is discharged from the first explosion-proof valve, it can enter the first exhaust cavity through the avoidance hole, and then enter the second exhaust cavity, and finally be discharged from the battery pack through the second explosion-proof valve. In this way, the high-temperature gas generated by thermal runaway of the battery cell can be effectively prevented from entering the area where the high and low voltage copper busbars and wiring harnesses are located, thereby effectively reducing the risk of electrical short circuit and arcing, and the risk of thermal diffusion of thermal runaway of the battery cell is low.

[0009] In some embodiments, the first exhaust cavity extends along a second direction, the second direction is perpendicular to the first direction, the frame includes a first frame beam and a second frame beam arranged at intervals along the second direction, at least one of the first frame beam and the second frame beam is provided with the second exhaust cavity, the first end of the beam body is connected to the first frame beam, and the second end of the beam body is connected to the second frame beam.

[0010] In some embodiments, two opposite end surfaces of the beam body along the second direction are respectively provided with a first opening and a second opening communicating with the first exhaust cavity;

[0011] Each of the first frame beam and the second frame beam is provided with the second exhaust cavity, the first frame beam is provided with a first connecting hole communicating with the second exhaust cavity on the side facing the second frame beam, and the second frame beam is provided with a second connecting hole communicating with the second exhaust cavity on the side facing the first frame beam, the first connecting hole, the second connecting hole and the beam body correspond one-to-one, the first connecting hole is communicated with the first opening on the corresponding beam body, and the second connecting hole is communicated with the second opening on the corresponding beam body.

[0012] In some embodiments, there are two second explosion-proof valves, one of which is installed on the side of the first frame beam facing away from the second frame beam, and the other second explosion-proof valve is installed on the side of the second frame beam facing away from the first frame beam.

[0013] In some embodiments, the first end surface of the beam body is welded to the side surface of the first frame beam facing the second frame beam, and the second end surface of the beam body is welded to the side surface of the second frame beam facing the first frame beam;

[0014] Alternatively, the first end of the beam body is connected to the first frame beam via a fastener, and the second end of the beam body is connected to the second frame beam via a fastener, and the battery frame also includes a first seal and a second seal, the first seal is clamped between the beam body and the first frame beam and surrounds the first opening and the first connecting hole, and the second seal is clamped between the beam body and the second frame beam and surrounds the second opening and the second connecting hole.

[0015] In some embodiments, on a projection plane perpendicular to the first direction, the area of ​​the projected outer contour of the beam body is S1, and the sum of the projected areas of the avoidance holes on the same side of the beam body is S2, wherein 0.1≤S2 / S1≤0.5.

[0016] In some embodiments, a dimension of the beam in the first direction is d, wherein 5 mm ≤ d ≤ 15 mm.

[0017] The battery pack according to an embodiment of the utility model includes a battery cell module and a battery frame as described in any of the above embodiments, the battery cell module includes a plurality of battery cell rows arranged at intervals along the first direction, each of the accommodating chambers is equipped with at least one of the battery cell rows, each of the battery cell rows includes a plurality of battery cells arranged along the second direction, the first explosion-proof valve is provided on the side of the battery cell facing the adjacent beam body, and a pole is provided on the side of the battery cell opposite to the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0018] The technical advantages of the battery pack according to the embodiment of the utility model are the same as the technical advantages of the battery frame of the above-mentioned embodiment, which will not be repeated here.

[0019] In some embodiments, the battery cell has a first side surface and a second side surface opposite to each other along the first direction, and among any two adjacent battery cells arranged along the second direction, one of the battery cells is provided with the first explosion-proof valve on the first side surface, and the other battery cell is provided with the first explosion-proof valve on the second side surface;

[0020] Each of the accommodating cavities is equipped with a battery cell row, and the multiple beam bodies include a first beam body and a second beam body located at the edge, and a plurality of third beam bodies located between the first beam body and the second beam body. The first beam body is provided with the avoidance hole on the side adjacent to the battery cell row, the second beam body is provided with the avoidance hole on the side adjacent to the battery cell row, and the third beam body is provided with the avoidance holes on two opposite sides along the first direction.

[0021] In some embodiments, on a projection plane perpendicular to the first direction, the projection of the first explosion-proof valve overlaps the projection of the corresponding avoidance hole, and a gap between the projected outer contour of the first explosion-proof valve and the projected outer contour of the corresponding avoidance hole is L, where 0.5mm≤L≤3mm.

[0022] The vehicle according to the embodiment of the present invention includes the battery frame as described in the above embodiment or the battery pack as described in the above embodiment.

[0023] The technical advantages of the vehicle according to the embodiment of the utility model are the same as the technical advantages of the battery frame and the battery pack of the above-mentioned embodiment, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 4 is a top view of a battery pack according to an embodiment of the present utility model.

[0025] Figure 2 is an exploded view of a battery pack according to an embodiment of the present utility model.

[0026] Figure 3 Schematic diagram of a battery frame according to an embodiment of the utility model.

[0027] Figure 4 It is a schematic diagram of the third beam in the battery frame according to an embodiment of the utility model.

[0028] Figure 5 It is a schematic diagram of a battery cell in a battery pack according to an embodiment of the utility model.

[0029] Figure 6 It is a partial cross-sectional view of a battery frame according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] 1. Battery frame; 11. Frame; 111. First frame beam; 1111. Second exhaust cavity; 1112. First connection hole; 112. Second frame beam; 1121. Second connection hole; 12. First beam body; 13. Second beam body; 14. Third beam body; 141. Avoidance hole; 142. First exhaust cavity; 143. First opening; 144. Second opening; 15. Second explosion-proof valve; 2. Battery cell module; 21. Battery cell; 211. First explosion-proof valve; 212. Pole; 3. First seal; 4. Second seal. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0033] Combine the following Figure 1-Figure 6 A battery frame 1 according to an embodiment of the present invention is described.

[0034] The battery frame 1 of the embodiment of the utility model includes a frame 11 and a plurality of beams arranged in the frame 11, the plurality of beams are arranged at intervals along the first direction, and the frame 11 and the plurality of beams together define a housing cavity for accommodating a plurality of power supply cores 21. Among them, the beam has a first exhaust cavity 142, and a side of the beam opposite to the first direction is provided with an avoidance hole 141 connected to the first exhaust cavity 142, the avoidance hole 141 corresponds to the first explosion-proof valve 211 in the power core 21 accommodated in the housing cavity and is arranged relatively, the frame 11 has a second exhaust cavity 1111, the second exhaust cavity 1111 is connected to all the first exhaust cavities 142, and the outer peripheral surface of the frame 11 is installed with a second explosion-proof valve 15 connected to the second exhaust cavity 1111.

[0035] According to the battery frame 1 of the embodiment of the utility model, the multiple accommodating cavities defined by the frame 11 and the multiple beams can accommodate the battery cell 21, and the first explosion-proof valve 211 on the battery cell 21 can be opposite to the avoidance hole 141 on the beam. At this time, after the high-temperature gas generated by the thermal runaway of the battery cell 21 is discharged from the first explosion-proof valve 211, it can enter the first exhaust cavity 142 through the avoidance hole 141, and then enter the second exhaust cavity 1111, and finally be discharged from the battery pack through the second explosion-proof valve 15. In this way, the high-temperature gas generated by the thermal runaway of the battery cell 21 is effectively prevented from entering the area where the high and low voltage copper busbars and wiring harnesses are located, thereby effectively reducing the risk of electrical short circuit and arcing, and the risk of thermal diffusion of thermal runaway of the battery cell 21 is low.

[0036] It should be noted that the first direction is the length direction of the battery frame 1, and the second direction is the width direction of the battery frame 1. For ease of understanding, Figure 6 The direction indicated by the arrow A is the first direction of the battery frame 1 according to the embodiment of the utility model. Figure 6 The direction indicated by the middle arrow B is the second direction of the battery frame 1 according to the embodiment of the present utility model.

[0037] In some embodiments, Figure 3 and Figure 6 As shown, the first exhaust cavity 142 extends along the second direction, and the second direction is perpendicular to the first direction. The frame 11 includes a first frame beam 111 and a second frame beam 112 arranged at intervals along the second direction. At least one of the first frame beam 111 and the second frame beam 112 is provided with a second exhaust cavity 1111. The first end of the beam body is connected to the first frame beam 111, and the second end of the beam body is connected to the second frame beam 112.

[0038] At this time, the second explosion-proof valve 15 can be set on at least one of the first frame beam 111 and the second frame beam 112. After the high-temperature gas enters the second exhaust cavity 1111 on at least one of the first frame beam 111 and the second frame beam 112 from the first exhaust cavity 142, it can be discharged from the battery frame 1 by the second explosion-proof valve 15. Compared with setting the second exhaust cavity 1111 on other frame beams of the frame 11 except the first frame beam 111 and the second frame beam 112, the high-temperature gas in the frame 11 in this embodiment has a smaller travel path, thereby effectively avoiding the high-temperature gas from moving for too long in the frame 11, which causes the frame 11 to be overheated and causes an increased risk of heat diffusion.

[0039] Moreover, the first end and the second end of the beam body are respectively connected to the first frame beam 111 and the second frame beam 112. In addition to providing a path for the high-temperature gas to pass through, the beam body also serves as a reinforcing beam, effectively improving the structural strength of the battery frame 1 and effectively improving the space utilization of the battery pack in the length direction.

[0040] Specifically, the beam body is located between the first frame beam 111 and the second frame beam 112, the second exhaust cavity 1111 extends along the first direction, and the size of the second exhaust cavity 1111 in the first direction is greater than or equal to the distance between the two beam bodies located at the edge, and the first exhaust cavity 142 in each beam body is directly connected to the second exhaust cavity 1111.

[0041] In some embodiments, Figure 6 As shown, the two end surfaces of the beam body opposite to each other along the second direction are respectively provided with a first opening 143 and a second opening 144 communicating with the first exhaust cavity 142. Each of the first frame beam 111 and the second frame beam 112 is provided with a second exhaust cavity 1111, and the side of the first frame beam 111 facing the second frame beam 112 is provided with a first connection hole 1112 communicating with the second exhaust cavity 1111, and the side of the second frame beam 112 facing the first frame beam 111 is provided with a second connection hole 1121 communicating with the second exhaust cavity 1111, and the first connection hole 1112, the second connection hole 1121 and the beam body correspond to each other, and the first connection hole 1112 is communicated with the first opening 143 on the corresponding beam body, and the second connection hole 1121 is communicated with the second opening 144 on the corresponding beam body.

[0042] That is, each beam body is connected to the first connection hole 1112 and the second connection hole 1121 respectively through the first opening 143 and the second opening 144, so as to realize the connection between each first exhaust cavity 142 and the two exhaust cavities. At this time, the high-temperature gas generated by the thermal runaway of the battery cell 21 can enter the two second exhaust cavities 1111 at the same time through the corresponding first exhaust cavity 142, so as to facilitate the rapid diffusion of the high-temperature gas, effectively avoid the excessive pressure in the first exhaust cavity 142 and the second exhaust cavity 1111, which causes the high-temperature gas to overflow from the gap between the battery cell 21 and the beam body to the area where the high and low voltage copper busbars and the wiring harness are located, and further reduce the risk of electrical short circuit and arcing.

[0043] Specifically, the first end surface of the beam body can be in contact with the side of the first frame beam 111 toward the second frame beam 112, and the second end surface of the beam body can be in contact with the side of the second frame beam 112 toward the first frame beam 111 to ensure the connection and sealing between the first exhaust cavity 142 and the two second exhaust cavities 1111.

[0044] In addition, the beam body can be formed by extrusion of a profile, and then the avoidance hole 141 can be formed on the corresponding side surface thereof.

[0045] In some embodiments, Figure 1 As shown, there are two second explosion-proof valves 15 , one of which is installed on the side of the first frame beam 111 away from the second frame beam 112 , and the other second explosion-proof valve 15 is installed on the side of the second frame beam 112 away from the first frame beam 111 .

[0046] At this time, when any battery cell 21 thermally runs away and produces high-temperature gas, two gas discharge paths can be generated, which can be discharged out of the battery pack through the two second explosion-proof valves 15 at the same time. The discharge efficiency of the high-temperature gas is higher, and the high-temperature gas can be effectively prevented from accumulating in the first exhaust chamber 142 and the second exhaust chamber 1111 for too long, thereby increasing the risk of secondary injury.

[0047] Specifically, the two second explosion-proof valves 15 are respectively disposed at the center positions of the first frame beam 111 and the second frame beam 112 in the first direction.

[0048] In some embodiments, the first end surface of the beam body is welded to the side of the first frame beam 111 facing the second frame beam 112, and the second end surface of the beam body is welded to the side of the second frame beam 112 facing the first frame beam 111. This makes the communication and sealing between the first exhaust cavity 142 and the second exhaust cavity 1111 higher.

[0049] Alternatively, the first end of the beam body is connected to the first frame beam 111 via a fastener, and the second end of the beam body is connected to the second frame beam 112 via a fastener, and the battery frame also includes a first seal 3 and a second seal 4, the first seal 3 is clamped between the beam body and the first frame beam 111 and surrounds the first opening 143 and the first connecting hole 1112, and the second seal 4 is clamped between the beam body and the second frame beam 111 and surrounds the second opening 144 and the second connecting hole 1121.

[0050] The fasteners include but are not limited to bolts, rivets or clamps. The first seal 3 and the second seal 4 may be sealing rings, thereby further ensuring the connection and sealing between the first exhaust cavity 142 and the two second exhaust cavities 1111.

[0051] In some embodiments, on a projection plane perpendicular to the first direction, the area of ​​the projected outer contour of the beam body is S1, and the sum of the projected areas of the avoidance holes 141 on the same side of the beam body is S2, wherein 0.1≤S2 / S1≤0.5.

[0052] That is, on the basis of ensuring that the first explosion-proof valve 211 on each battery cell 21 has a corresponding avoidance hole 141, the total area of ​​the avoidance holes 141 located on the same side of the beam body will not affect the structural strength of the beam body due to being set too large, thereby effectively ensuring the structural strength of the battery frame 1.

[0053] Specifically, the beam body has a first side surface and a second side surface opposite to each other along a first direction, and the avoidance hole 141 can be arranged on at least one of the first side surface and the second side surface of the beam body. Taking the example that both the first side surface and the second side surface of the beam body are provided with avoidance holes 141, the ratio of the total area of ​​the avoidance holes 141 on the first side surface to the area of ​​the first side surface, and the ratio of the total area of ​​the avoidance holes 141 on the second side surface to the area of ​​the second side surface are both between 0.1 and 0.5.

[0054] For example, the ratio of the total area of ​​the avoidance holes 141 on the first side surface to the area of ​​the first side surface, and the ratio of the total area of ​​the avoidance holes 141 on the second side surface to the area of ​​the second side surface are both 0.1, 0.3 or 0.5.

[0055] In some embodiments, a dimension of the beam body in the first direction is d, wherein 5 mm≤d≤15 mm.

[0056] The beam body of the above thickness can not only provide the first exhaust cavity 142 for smooth passage of high temperature gas, but also ensure that it has high structural strength, thereby ensuring the structural strength of the battery frame 1 and effectively improving the space utilization of the battery pack in the length direction.

[0057] Specifically, the thickness d of the beam body may be 5 mm, 10 mm, and 15 mm.

[0058] The battery pack according to an embodiment of the utility model includes a battery cell module 2 and a battery frame 1 as in any of the above embodiments, the battery cell module 2 includes a plurality of battery cell rows arranged at intervals along a first direction, each accommodating cavity is equipped with at least one battery cell row, each battery cell row includes a plurality of battery cells 21 arranged along a second direction, a first explosion-proof valve 211 is provided on the side of the battery cell 21 facing the adjacent beam body, a pole 212 is provided on the side of the battery cell 21 opposite to the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0059] The technical advantages of the battery pack according to the embodiment of the utility model are the same as the technical advantages of the battery frame 1 of the above-mentioned embodiment, which will not be repeated here.

[0060] It should be noted that the third direction is the height direction of the battery pack, and the pole 212 is arranged on the upper end surface of the battery cell 21 .

[0061] In some embodiments, Figure 1-Figure 5 As shown, the battery cell 21 has a first side surface and a second side surface that are opposite to each other along a first direction. Among any two adjacent battery cells 21 arranged along the second direction, a first explosion-proof valve 211 is provided on the first side surface of one of the battery cells 21, and a first explosion-proof valve 211 is provided on the second side surface of the other battery cell 21. A battery cell row is matched in each accommodating cavity, and a plurality of beam bodies include a first beam body 12 and a second beam body 13 located at the edge, and a plurality of third beam bodies 14 located between the first beam body 12 and the second beam body 13. The side surface of the first beam body 12 adjacent to the battery cell row is provided with an avoidance hole 141, the side surface of the second beam body 13 adjacent to the battery cell row is provided with an avoidance hole 141, and the two opposite sides of the third beam body 14 along the first direction are provided with avoidance holes 141.

[0062] This arrangement enables the plurality of avoidance holes 141 on the third beam body 14 to be arranged in half on both sides of the third beam body 14, thereby further improving the structural strength of the third beam body 14. At the same time, the number of avoidance holes 141 on the first beam body 12 and the second beam body 13 is half the number of avoidance holes 141 on the third beam body 14, which also improves the structural strength of the first beam body 12 and the second beam body 13.

[0063] Specifically, Figure 4 As shown, the plurality of avoidance holes 141 located on one side surface of the third beam body 14 and the plurality of avoidance holes 141 located on the other side surface are alternately arranged along the second direction.

[0064] In some embodiments, on a projection plane perpendicular to the first direction, the projection of the first explosion-proof valve 211 overlaps the projection of the corresponding avoidance hole 141, and a gap between the projected outer contour of the first explosion-proof valve 211 and the projected outer contour of the corresponding avoidance hole 141 is L, where 0.5mm≤L≤3mm.

[0065] The projected outer contour shape of the avoidance hole 141 is the same as that of the first explosion-proof valve 211 , and the former is slightly larger than the latter, thereby effectively eliminating assembly errors and ensuring accurate alignment of the first explosion-proof valve 211 and the corresponding avoidance hole 141 .

[0066] The vehicle according to the embodiment of the present invention includes the battery frame 1 as described in the above embodiment or the battery pack as described in the above embodiment.

[0067] The technical advantages of the vehicle according to the embodiment of the utility model are the same as the technical advantages of the battery frame 1 and the battery pack of the above-mentioned embodiment, which will not be repeated here.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A battery frame, characterized in that: It comprises a frame and a plurality of beams arranged in the frame, the plurality of beams are arranged at intervals along a first direction, the frame and the plurality of beams jointly define a receiving cavity for accommodating a plurality of power supply cores, wherein: The beam body has a first exhaust cavity, and a side of the beam body opposite to the first direction is provided with an avoidance hole connected to the first exhaust cavity. The avoidance hole corresponds to the first explosion-proof valve in the battery cell accommodated in the accommodating cavity and is arranged relatively to each other. The frame has a second exhaust cavity, and the second exhaust cavity is connected to all the first exhaust cavities. The outer peripheral surface of the frame is equipped with a second explosion-proof valve connected to the second exhaust cavity.

2. The battery frame according to claim 1, characterized in that: The first exhaust cavity extends along a second direction, and the second direction is perpendicular to the first direction. The frame includes a first frame beam and a second frame beam arranged at intervals along the second direction. At least one of the first frame beam and the second frame beam is provided with the second exhaust cavity. The first end of the beam body is connected to the first frame beam, and the second end of the beam body is connected to the second frame beam.

3. The battery frame according to claim 2, characterized in that: The two end surfaces of the beam body opposite to each other along the second direction are respectively provided with a first opening and a second opening communicating with the first exhaust cavity; Each of the first frame beam and the second frame beam is provided with the second exhaust cavity, the first frame beam is provided with a first connecting hole communicating with the second exhaust cavity on the side facing the second frame beam, and the second frame beam is provided with a second connecting hole communicating with the second exhaust cavity on the side facing the first frame beam, the first connecting hole, the second connecting hole and the beam body correspond one-to-one, the first connecting hole is communicated with the first opening on the corresponding beam body, and the second connecting hole is communicated with the second opening on the corresponding beam body.

4. The battery frame according to claim 3, characterized in that: There are two second explosion-proof valves, one of which is installed on the side of the first frame beam away from the second frame beam, and the other of which is installed on the side of the second frame beam away from the first frame beam.

5. The battery frame according to claim 3, characterized in that: The first end surface of the beam body is welded to the side surface of the first frame beam facing the second frame beam, and the second end surface of the beam body is welded to the side surface of the second frame beam facing the first frame beam; Alternatively, the first end of the beam body is connected to the first frame beam via a fastener, and the second end of the beam body is connected to the second frame beam via a fastener, and the battery frame also includes a first seal and a second seal, the first seal is clamped between the beam body and the first frame beam and surrounds the first opening and the first connecting hole, and the second seal is clamped between the beam body and the second frame beam and surrounds the second opening and the second connecting hole.

6. The battery frame according to claim 1, characterized in that: On a projection plane perpendicular to the first direction, the area of ​​the projected outer contour of the beam body is S1, and the sum of the projected areas of the avoidance holes on the same side of the beam body is S2, wherein 0.1≤S2 / S1≤0.

5.

7. The battery frame according to claim 1, characterized in that: The dimension of the beam body in the first direction is d, wherein 5 mm≤d≤15 mm.

8. A battery pack, characterized in that: It comprises a battery cell module and a battery frame as described in any one of claims 1 to 7, wherein the battery cell module comprises a plurality of battery cell rows arranged at intervals along the first direction, each of the accommodating cavities is equipped with at least one of the battery cell rows, each of the battery cell rows comprises a plurality of battery cells arranged along the second direction, the first explosion-proof valve is provided on the side of the battery cell facing the adjacent beam body, a pole is provided on the side of the battery cell opposite to the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

9. The battery pack according to claim 8, characterized in that: The battery cell has a first side surface and a second side surface opposite to each other along the first direction, and among any two adjacent battery cells arranged along the second direction, one of the battery cells is provided with the first explosion-proof valve on the first side surface, and the other battery cell is provided with the first explosion-proof valve on the second side surface; Each of the accommodating cavities is equipped with a battery cell row, and the multiple beam bodies include a first beam body and a second beam body located at the edge, and a plurality of third beam bodies located between the first beam body and the second beam body. The first beam body is provided with the avoidance hole on the side adjacent to the battery cell row, the second beam body is provided with the avoidance hole on the side adjacent to the battery cell row, and the third beam body is provided with the avoidance holes on two opposite sides along the first direction.

10. The battery pack according to claim 8, characterized in that: On a projection plane perpendicular to the first direction, the projection of the first explosion-proof valve overlaps the projection of the corresponding avoidance hole, and a gap between the projected outer contour of the first explosion-proof valve and the projected outer contour of the corresponding avoidance hole is L, wherein 0.5 mm ≤ L ≤ 3 mm.

11. A vehicle, characterized in that: It comprises a battery frame as described in any one of claims 1 to 7 or a battery pack as described in any one of claims 8 to 10.

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