Battery housing and battery pack

Abstract

Battery housing, characterized in that it comprises a base plate, a surrounding frame and a separator assembly, wherein the surrounding frame is provided around the base plate and wherein the surrounding frame is rigidly connected to the base plate, wherein the base plate and the surrounding frame form a receiving compartment, wherein the receiving compartment is used to receive a plurality of batteries, wherein the separator assembly comprises a first support body, a second support body and a first connecting element, wherein the first support body extends in a first direction while the second support body extends in a second direction, wherein the first direction and the second direction are provided at a first angle to each other, wherein the first angle is 85° to 95°, wherein the first direction and the second direction are both parallel to a large area of ​​the base plate.wherein the first support body and the second support body subdivide the receiving compartment into a plurality of sub-receiving compartments, wherein the first connecting element comprises a first base plate section and two first side plate sections connected to each other, wherein the first base plate section is rigidly connected to the first support body along the second direction, while the two first side plate sections are spaced apart from each other along the first direction and both first side plate sections are connected to the second support body along the first direction, wherein a projection of the second support body along the second direction covers the first base plate section.

Description

Technical field

[0001] The present invention relates to the technical field of battery housings, in particular a battery housing and a battery pack. Technical background

[0002] A partition assembly is incorporated into the battery housing of an electric vehicle. This assembly divides the interior of the battery housing into a number of relatively independent sub-compartments, each used to house a battery. In the related technology, the structural design of the partition assembly is inadequate, resulting in excessive intrusion into the interior of the battery housing and a tendency to interfere with the batteries, thus adversely affecting battery installation.

[0003] Therefore, it is a technical problem that urgently needs to be solved by experts in order to find a solution to overcome or mitigate the above shortcomings. Content of the invention

[0004] The purpose of the present invention is to provide a battery housing and a battery pack wherein a separator assembly within the battery housing can occupy relatively little interior space of the battery housing, does not easily conflict with the battery and can facilitate the installation of the battery.

[0005] To solve the above technical problems, the present invention provides a battery housing comprising a base plate, a surrounding frame, and a separator assembly, wherein the surrounding frame is provided around the base plate and is rigidly connected to the base plate, wherein the base plate and the surrounding frame form a receiving compartment, the receiving compartment being used to receive a plurality of batteries, wherein the separator assembly comprises a first support body, a second support body, and a first connecting element, wherein the first support body extends in a first direction, while the second support body extends in a second direction, the first direction and the second direction being at a first angle to each other, the first angle being 85° to 95°.wherein the first direction and the second direction both run parallel to a large area of ​​the base plate, wherein the first support body and the second support body divide the receiving compartment into a plurality of sub-receiving compartments, wherein the first connecting element comprises a first base plate section and two first side plate sections connected to each other, wherein the first base plate section is rigidly connected to the first support body along the second direction, while the two first side plate sections are spaced apart from each other along the first direction, and both first side plate sections are connected to the second support body along the first direction, wherein a projection of the second support body along the second direction covers the first base plate section.

[0006] In the solution above, the projection of the second support body along the second direction covers the first base plate section. This means the installation space of the second support body is used to accommodate the first base plate section, and the first base plate section will not protrude from the second support body along the first direction. This reduces the space occupied within the battery housing. Simultaneously, the possibility of interference between the first connecting element and the battery inside the battery housing is reduced. This facilitates battery installation and allows for more space within the battery housing, which also contributes to improving the energy density of the battery housing.

[0007] Optionally, the first side plate section is located within an inner cavity of the second support body.

[0008] Optionally, the second support body comprises two second support plates arranged opposite each other along a third direction, wherein the third direction is at a second angle to both the first and second directions, the second angle being 85° to 95°, one of the two second support plates being provided with a deflection notch, the first connecting element having a dimension of L1 in the second direction, the deflection notch having a dimension of L2 in the second direction, and the second support body having a dimension of L3 in the second direction, wherein 0.3×L3≥L2≥L1.

[0009] Optionally, the first side plate section is located on an outside of the second support body, with the first side plate section having a thickness of 0.5 mm to 3 mm.

[0010] Optionally, the first side plate section is provided with an insulating layer on at least one side facing away from the second support body along the first direction.

[0011] Optionally, the second direction is a forward-reverse direction of the vehicle, wherein the thickness of the first support body is greater than the thickness of the second support body, wherein the second support body is provided with a groove section extending along the third direction, the third direction being provided at a second angle to both the first direction and the second direction, wherein the first support body is inserted into the groove section along the third direction.

[0012] Optionally, the battery housing further comprises a second connecting element, wherein the second connecting element comprises a second base plate section, two second side plate sections, and two wing plate sections, wherein the second base plate section is connected to the two wing plate sections by each of the two second side plate sections, wherein the second base plate section is provided on an upper part of the second support body and is firmly connected to the second support body, wherein a large area of ​​the second base plate section is parallel to a first surface of the second support body, wherein the second side plate section is provided parallel to a second surface of the second support body, wherein the first surface and the second surface are provided at a third angle to each other, wherein the third angle is 60° to 120°.wherein the two wing plate sections are provided on the upper part of the first support body and are firmly connected to the first support body, wherein the wing plate sections are provided parallel to the first surface, wherein the dimension of the second support body is larger than the dimension of the first support body along a third direction, wherein the third direction is provided at a second angle to both the first direction and the second direction, wherein the second angle is 85° and 95°.

[0013] Optionally, the projection of the groove section along the first direction is rectangular, with the sum of the dimensions of the first support body and the two first base plate sections in the second direction being adapted to the dimensions of the groove section in the second direction.

[0014] Optionally, the groove section comprises a first slot segment and a second slot segment, wherein the second slot segment is located relative to the first slot segment near a slot opening of the groove section, wherein the dimension of the second slot segment in the second direction is larger than the dimension of the first slot segment in the second direction, wherein the dimension of the first support body in the second direction is adapted to the dimension of the first slot segment in the second direction, while the sum of the dimensions of the second support body and the two first base plate sections in the second direction is adapted to the dimension of the second slot segment in the second direction.

[0015] Optionally, at least one of the first support body and the second support body is connected to the first connecting element by a combination of welding and connecting elements.

[0016] Optionally, the ratio of the dimension of the first connecting element in the third direction to the dimension of the first support body in the third direction is 0.6 to 1, wherein the third direction is provided at an angle to the first direction and the second direction, and wherein the projection of the first support body along the second direction covers the first connecting element.

[0017] Optionally, a reinforcement section is provided between the first base plate section and the first side plate section.

[0018] The present invention further provides a battery pack comprising a battery housing and a plurality of batteries provided within the battery housing, wherein the battery housing is a battery housing as described above. Images Fig. Figure 1 shows a schematic representation of the structure of a battery pack of an embodiment of the present invention; Fig. Figure 2 shows a schematic representation of the structure of a separator support assembly; Fig. Figure 3 shows a partially enlarged representation of a connection point between a first support body and a second support body in Fig. 2; Fig. Figure 4 shows a disassembled view of Fig. 3; Fig. Figure 5 shows a representation of the connection structure between a first connecting element and the first support body in Fig. 4; Fig. Figure 6 shows a representation of the interaction structure between the first connecting element and the second support body; Fig. Figure 7 shows a partially enlarged representation of the second support body at a groove section; Fig. Figure 8 shows a schematic representation of the structure of a deformed solution in Fig. 7; Fig. Figure 9 shows a schematic representation of the structure of a second connecting element; Fig. Figure 10 shows a schematic representation of the structure of the second support body, which is provided with a deflection notch; Fig. Figure 11 shows a partially enlarged view of the groove section and the deflection notch in Fig. 10. Reference symbol list:

[0019] 1000-Battery housing; 1100-Base plate; 1200-Enclosing frame; 1300-Divider assembly; 1400-Lower storage compartment; 2000 battery; 100th - first carrier body; 200-second support body; 200A-first surface; 200B-second surface; 210-second support plate; 211-defer notch; 220-groove section; 221-first slot segment; 222-second slot segment; 230-slot bottom connection section; 300-first connecting element; 310-first base plate section; 311-first base plate connection hole; 320-first side plate section; 321-first side plate connection hole; 330-reinforcement section; 400-second connecting element; 410-second base plate section; 411-second Base plate connection hole; 420-second side plate section; 421-second side plate connection hole; 430-wing plate section; 431-wing plate connection hole. Description of embodiments

[0020] In order to enable the person skilled in the art to better understand the technical solution of the present invention, a detailed description of the present invention follows in conjunction with the attached drawings and specific embodiments.

[0021] In the exemplary embodiments of the present invention, terms such as "first", "second", and "third", etc., serve only to describe the purpose and are not to be understood as indicating their relative importance or implicitly defining the number of the specified technical features. Consequently, features designated as "first", "second", or "third" may expressly or implicitly include one or more of these features.

[0022] In the description of the present embodiments of the present invention, it should be noted that the terms, e.g., "mounted", "connected" and "attached", are to be understood broadly, e.g., as either a detachable connection or a non-detachable connection, a direct connection or an indirect connection via an intermediate medium, unless expressly stated otherwise and limited.

[0023] The orientation terms mentioned in the embodiments of the present invention, such as "inside," "outside," and the like, are merely orientations with reference to the accompanying drawings. Therefore, the orientation terms used serve to better and more clearly illustrate and explain the embodiments of the present invention and do not imply that the device or element referred to must have a specific orientation or be designed and operated in a specific orientation, and therefore cannot be interpreted as limiting the embodiments of the present invention.

[0024] In the description of the present embodiments of the present invention, the terms "have," "comprise," or any other variant shall be understood to encompass their exclusive inclusion, such that a process, method, object, or device comprising a series of elements includes not only those elements but also other elements not expressly listed or belonging to such process, method, object, or device. Without further limitation, the fact that an element is defined by the phrase "with a ..." does not preclude the presence of another identical element in the process, method, object, or device comprising that element.

[0025] As in Fig. 1 shown, shows Fig. 1 A schematic representation of the structure of a battery pack of an embodiment of the present invention.

[0026] As in Fig. Figure 1 shows an embodiment of the present invention providing a battery pack comprising a battery housing 1000 and a plurality of batteries 2000.

[0027] The battery housing 1000 comprises a base plate 1100, an enclosure frame 1200, and a partition assembly 1300. The enclosure frame 1200 is provided around the base plate 1100 and is firmly connected to the base plate 1100, with specific methods of firm connection including, but not limited to, welding, bolting, riveting, and the like. The base plate 1100 and the enclosure frame 1200 enclose and form a receiving compartment, and the receiving compartment is used to receive a plurality of batteries 200. A partition assembly 1300 is provided within the receiving compartment and is used to connect to the enclosure frame 1200 to divide the receiving compartment into a plurality of sub-receiving compartments 1400, each of which is provided with a plurality of batteries 2000.

[0028] As described in the prior art, the structural design of the separator assembly in the related technology is inadequate, resulting in the separator assembly excessively encroaching on the interior of the battery housing and also tending to interfere with the batteries, which adversely affects battery installation. In light of this, an embodiment of the present invention further provides a new separator assembly 1300.

[0029] In particular, as in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. 11 shown, shows Fig. 2 a schematic representation of the structure of a separating support assembly; Fig. Figure 3 shows a partially enlarged representation of a connection point between a first support body and a second support body in Fig. 2; Fig. Figure 4 shows a disassembled view of Fig. 3; Fig. Figure 5 shows a representation of the connection structure between a first connecting element and the first support body in Fig. 4; Fig. Figure 6 shows a representation of the interaction structure between the first connecting element and the second support body; Fig. Figure 7 shows a partially enlarged representation of the second support body at a groove section; Fig. Figure 8 shows a schematic representation of the structure of a deformed solution in Fig. 7; Fig. Figure 9 shows a schematic representation of the structure of a second connecting element; Fig. Figure 9 shows a schematic representation of the structure of the second support body, which is provided with a deflection notch; Fig. Figure 11 shows a partially enlarged view of the groove section and the deflection notch in Fig. 10.

[0030] As in Fig. 2 to Fig. As shown in Figure 6, the separating support assembly 1300 in an embodiment of the present invention comprises a first support body 100, a second support body 200 and a first connecting element 300.

[0031] The first support body 100 extends along a first direction X, and the second support body 200 extends along a second direction Y. The structural forms of the first support body 100 and the second support body 200 are not limited here but can be determined in accordance with actual usage requirements and the like; for example, both the first support body 100 and the second support body 200 can be tubular beams. The first direction X and the second direction Y are arranged at a first angle to each other, with the first angle being between 85° and 95°, for example, 90°. Furthermore, both the first direction X and the second direction Y can run parallel to a large area of ​​the base plate 1100.It should be understood that the large area of ​​the base plate 1100 refers to the area of ​​the base plate 1100 which has a relatively large area, and in the embodiments of the present invention, the large area may refer to a side of the base plate 1100 facing the receiving compartment.

[0032] The first connecting element 300 can essentially be U-shaped, comprising a first base plate section 310 and two first side plate sections 320 connected to each other. The first base plate section 310 is rigidly connected to the first support body 100 along the second direction Y. At this point, the two first side plate sections 320 are spaced apart from each other along the first direction X, and both first side plate sections 320 are connected to the second support body 200 along the first direction X.

[0033] After the first support body 100, the second support body 200, and the first connecting element 300 are assembled, the projection of the second support body 200 along the second direction Y covers the first base plate section 310. In this way, the installation space of the second support body 200 is used to accommodate the first base plate section 310, and the first base plate section 310 will not protrude from the second support body 200 along the first direction X, which can reduce the occupancy of the space inside the battery housing 1000.At the same time, the possibility of interference between the first connecting element 300 and the battery 2000 inside the battery housing 1000 can be reduced, which can facilitate the installation of the battery 2000 inside the battery housing 1000 and allow more space for the installation of the battery 2000 inside the battery housing 1000, which also contributes to improving the energy density of the battery housing 1000.

[0034] In a specific installation, it may be that first the first base plate section 310 and the first support body 100 are connected in order to achieve the installation and fastening of the first connecting element 300 in the first support body 100, and then the first side plate section 320 and the second support body 200 are connected.

[0035] The embodiment of the present invention does not restrict the connection method between the first base plate section 310 and the first support body 100, nor the connection method between the first side plate section 320 and the second support body 200. In this specific embodiment, the person skilled in the art can choose according to their specific needs, as long as the requirements for the intended use can be met.

[0036] In a specific example, as in Fig. As shown in Figure 5, the first base plate section 310 can be provided with a first base plate connection hole 311, and the first side plate section 320 can be provided with a first side plate connection hole 321. The number of first base plate connection holes 311 and first side plate connection holes 321, as well as their distribution positions, are not limited here. During actual assembly, screws, rivets, and other fasteners can be prepared in advance and then used to pass through the first base plate connection hole 311 or the first side plate connection hole 321, respectively, to connect the fasteners between the first base plate section 310 and the first support body 100, or between the first side plate section 320 and the second support body 200, respectively.

[0037] Based on the connection described above using connecting elements, a secondary connection between the first base plate section 310 and the first support body 100, and between the first side plate section 320 and the second support body 200, can be made using a welding process to further improve the reliability of the connection between the first connecting element 300 and the first support body 100 and the second support body 200. This will further ensure the structural strength of the separating support assembly 1300 provided by the embodiment of the present invention. The above secondary connection is made using connecting elements, as the connection between the first base plate section 310 and the first support body 100, and between the first side plate section 320 and the second support body 200, was established using connecting elements.Therefore, there is essentially no relative displacement between the first base plate section 310 and the first support body 100 and between the first side plate section 320 and the second support body 200, which facilitates the execution of the welding process.

[0038] It should be understood that both the first base plate section 310 and the first side plate section 320 can also be mounted individually and fastened by means of a connection method such as a connection using fasteners, a welding, a snap connection or similar, as long as it is possible to ensure the requirements for the reliability of the connection.

[0039] In some optional embodiments, a reinforcement section 330 may also be provided between the first base plate section 310 and the first side plate section 320.

[0040] The reinforcing section 330 can increase the strength of the connection between the first base plate section 310 and the first side plate section 320, which in turn can effectively ensure the structural strength of the first connecting element 300 itself. During installation and subsequent use, the angle between the first base plate section 310 and the first side plate section 320 is less likely to change; that is, the possibility of relative rotation between the first side plate section 320 and the first base plate section 310 can be reduced. In this way, the strength of the connection between the first support body 100 and the second support body 200 can be better ensured.

[0041] The number, position, and structural form of the reinforcing section 330 are not limited herein, and in actual application, the person skilled in the art may determine them according to specific needs and the like. For example, the first bottom plate section 310 and the first side plate section 320 may be punched at a local position at the joint, so that an inward projection can be formed between the first bottom plate section 310 and the first side plate section 320, which can be used as the reinforcing section 330 above; Two (as in Fig. 5 shown) or more reinforcement sections 330 can be arranged between a first side plate section 320 and a first bottom plate section 310 to ensure the reinforcement effect of the reinforcement sections 330.

[0042] In some optional embodiments, the second support body 200 may be provided with a groove section 220 extending along the third direction Z, as shown in the Fig. 7 and Fig. Figure 8 shows that the second support body 200 can be inserted into the first support body 100 through the groove section 220 along the third direction Z and installed on the first connecting element 300 of the first support body 100.

[0043] The third direction Z is provided at a second angle to both the first direction X and the second direction Y, wherein the second angle can be 85° to 95°, e.g., 90° and the like. In a specific example, the battery housing 1000, provided in an embodiment of the present invention, is provided in a vehicle, and the vehicle is located on a horizontal surface. At this point, the first direction X and the second direction Y can both lie in the horizontal plane, and the third direction Z can be perpendicular to the horizontal plane, and the third direction Z can also be referred to as the upward-downward direction or the vertical direction.

[0044] The second support body 200 can also be provided with a slotted bottom connection section 230 on the side of the groove section 220 along the third direction Z, i.e., the groove section 220 does not extend through the second support body 200 along the third direction Z. When the second support body 200 is inserted into the first support body 100, the second support body 200 can be supported in the third direction Z by the first support body 100 via the slotted bottom connection section 230. In this way, the relative position of the second support body 200 with the first support body 100 and the first connection element 300 in the third direction Z can be ensured, which in turn facilitates the connection between the second support body 200 and the first connection element 300. At the same time, the first support body 100 can support the second support body 200 along the third direction Z.It can also reduce the shear force along the third direction Z at the connection point between the first base plate section 310 and the first support body 100, as well as at the connection point between the first side plate section 320 and the second support body 200. This contributes to the reliability of the connection between the first base plate section 310 and the first support body 100, as well as the connection between the first side plate section 320 and the second support body 200, and is of positive importance for ensuring the strength and service life of the connection between the first support body 100 and the second support body 200.

[0045] In some optional embodiments, such as in the Fig. 3 and Fig. As shown in Figure 6, the first side plate section 320 can be located on the outside of the second support body 200 after the insertion of the second support body 200 and the first support body 100, i.e. the second support body 200 can be inserted as a single piece between two of the first side plate sections 320 in the first direction X.

[0046] In this way, it is less likely that the second support body 200 will collide with the first side plate section 320 during insertion into the first support body 100, which can increase the ease of insertion of the second support body 200 and the first support body 100. At the same time, there is no need to open a notch on the second support body 200 to avoid collisions with the first side plate section 320, which can reduce the impact on the structural strength of the second support body 200 and also helps to ensure the structural strength of the second support body 200 itself.

[0047] In the present embodiment, the thickness of the first side wall section 320 can be controlled between 0.5 mm and 3 mm. In this way, the first side plate section 320 can occupy relatively little space within the battery box body 1000.

[0048] In the present embodiment, the first side plate section 320 can further be provided with an insulating layer (not shown in the figures) on a side facing away from the second support body 200 along the first direction X. The insulating layer can, for example, be an insulating coating of silicon nitride, silicon oxide, silicon nitride oxide, etc., which can be formed in particular by a process such as electrospraying, electroplating, etc., in order to achieve electrical insulation from the battery 2000, etc., which can reduce the occurrence of short circuits and help to ensure the safety of the battery housing 1000 during use.

[0049] In a solution such as in Fig. As shown in Figure 7, the projection of the groove section 220 along the first direction X can be rectangular. The sum of the dimensions of the first support body 100 and the two first base plate sections 310 in the second direction Y can be adapted to the dimension of the groove section 220 in the second direction Y. It should be noted that "adapt" in this embodiment of the invention means "essentially the same".

[0050] Especially in connection with Fig. 5, Fig. 6 to Fig. 7. The dimension of the groove section 220 in the second direction Y can be D3, the dimension of the first support body 100 in the second direction Y can be D1, and the dimension of the first base plate section 310 in the second direction Y can be D2. The first support body 100 is provided on both sides in the second direction Y with the first connecting element 300. D3 and (D1+2D2) can be adjusted, i.e., they can be approximately equal, so that the second support body 200 can be inserted through the groove section 220 into the first support body 100 and the two first base plate sections 310. At the same time, the distance between the inner wall surface of the groove section 220 in the second direction Y and the first base plate section 310 can be relatively small, which ensures ease of insertion and stability of the structure after insertion.

[0051] In another solution, such as in Fig. As shown in Figure 8, the groove section 220 can be configured as a stepped groove comprising a first slot segment 221 and a second slot segment 222. The second slot segment 222 is located near a slot opening of the groove section 220 relative to the first slot segment 221. A dimension D5 of the second slot segment 222 in the second direction Y can be larger than a dimension D4 of the first slot segment 221 in the second direction Y.

[0052] The dimension D1 of the first support body 100 in the second direction Y is adapted to the dimension D4 of the first slot segment 221 in the second direction Y, i.e., D1 and D4 are approximately equal. In this way, the first support body 100 can be inserted into the first slot segment 221, and the distance between the inner wall surface of the first slot segment 221 in the second direction Y and the first support body 100 can be relatively small, which ensures smooth insertion and the stability of the structure after insertion.Since the distance between the inner wall surface of the first slot segment 221 in the second direction Y and the first support body 100 is relatively small, welding can also be carried out between this inner wall surface of the slot and the first support body 100, which increases the length of the weld seam and better ensures the reliability of the connection between the first support body 100 and the second support body 200.

[0053] The sum of the dimensions of the second support body 200 and the two first base plate sections 310 in the second direction Y can be adjusted to the dimension D5 of the second slot segment 222 in the second direction Y, i.e., D5 and (D3+2D2) can be approximately equal. In this way, the first support body 100 and the two first base plate sections 310 can be inserted into the second slot segment 222, and the distance between the inner wall surface of the second slot segment 222 in the second direction Y and the first base plate section 310 can be relatively small, which ensures ease of insertion and stability of the structure after insertion.

[0054] In some optional embodiments, the first side plate section 320 can also be located on the inside of the second support body 200, i.e. within the inner cavity of the second support body 200.In this way, the projection of the second carrier body 200 along the second direction Y can achieve complete coverage of the first connecting element 300, and the first connecting element 300 can be located as a single unit within the second carrier body 200, which can significantly reduce the occupancy of the interior of the battery housing 1000 by the first connecting element 300, and it can largely avoid the short-circuit problem caused by contact between the first connecting element 300 and the multitude of batteries 2000, which leads to the breakage of the outer insulating element of the batteries 2000, which triggers the overlap between the batteries 2000 and the housing, and it can ensure the safety of the battery housing 1000 when using the battery housing 1000.

[0055] As in the Fig. 10 and Fig. As shown in Figure 11, the second support body 200 can comprise two second support plates 210, which are arranged opposite each other along the third direction Z, and one of the two second support plates 210 can be provided with a bypass notch 211, the bypass notch 211 being connected to the groove section 220. When the second support body 200 is inserted into the first support body 100 through the groove section 220, the bypass notch 211 can bypass the first side plate section 320 of the first connecting element 300, which can ensure smooth insertion.

[0056] The dimension of the first connecting element 300 in the second direction Y is L1. The dimension of the clearance notch 211 in the second direction Y is L2. The dimension of the second support body 200 in the second direction Y is L3. L1, L2, and L3 can satisfy the following relationship: 0.3 × L3 ≥ L2 ≥ L1. In this way, the reliable clearance of the clearance notch 211 for the first connecting element 300 can be ensured, and it can be avoided that the dimension of the clearance notch 211 is too large, which could reduce the impact on the strength of the second support body 200 due to the opening of the clearance notch 211.

[0057] In some optional embodiments, the ratio between the dimension H1 of the first connecting element 300 in the third direction Z and the dimension H2 of the first support body 100 in the third direction Z can be 0.6 to 1. Furthermore, the projection of the first support body 100 along the second direction Y can cover the first connecting element 300.

[0058] In this way, it is avoided that the first connecting element 300 protrudes from the first support body 100 along the third direction Z. This prevents the second support body 200 from being hollowed out against the second support body 200 by the first connecting element 300 when it is inserted into the first support body 100. This avoids the problem of the slotted bottom connection section 230 not being able to abut the first support body 100 along the third direction Z, which is beneficial for ensuring the reliability of the connection between the first support body 100 and the second support body 200.At the same time, it is possible to avoid the problem that the dimension H1 of the first connecting element 300 is too small in the third direction Z, and the problem that the reliability of the connection between the first connecting element 300 and the first support body 100 and the second support body 200 is thereby reduced.

[0059] In some optional embodiments, the second direction Y can be a forward-backward direction of the vehicle, wherein the forward-backward direction refers in particular to a forward-backward direction which is also the direction of travel of the vehicle.

[0060] Generally, the battery housing 1000 is located in the middle and rear sections of the vehicle, and in the second direction Y, the front end of the vehicle and the like can be used as energy-absorbing components. In this way, when the vehicle is impacted along the second direction Y, the force on the battery housing 1000 in the second direction Y is not large, i.e., the force on the second support body 200 is not large. However, if the side section of the vehicle is struck, the impact force is essentially transmitted directly to the battery housing 1000. In response, in the embodiment of the present invention, the thickness of the first support body 100 can be greater than the thickness of the second support body 200 to increase the structural strength of the first support body 100.By not providing the first support body 100 with the aforementioned groove section 220 and the avoidance notch 211 and the similar structure that may impair strength, the first support body 100 can be manufactured essentially as a whole to improve the side impact strength of the battery housing 1000.

[0061] Based on the definition of the orientation in this embodiment, the first support body 100 can also be referred to as a crossbeam and the second support body 200 as a longitudinal beam.

[0062] In some optional embodiments, the separating support assembly 1300 according to the invention can also include a second connecting element 400. The second connecting element 400 can be connected to the slotted bottom connecting section 230 along the third direction Z. Furthermore, the second connecting element 400 can also be connected to the first support body 100 to further improve the reliability of the connection between the first support body 100 and the second support body 200.

[0063] As in Fig. As shown in Figure 9, the second connecting element 400 can approximately take the form of “ "and comprise a second base plate section 410, two second side plate sections 420, and two wing plate sections 430, which are connected to each other. As in Fig. As shown in Figure 7, the second support body 200 can comprise a first surface 200A and two second surfaces 200B, the two second surfaces 200B being located on both sides of the first surface 200A in the first direction X. The first surface 200A and the second surface 200B can be arranged at a third angle to each other, the third angle being, in particular, 60° to 120°, for example, 90°, etc. A large surface (a surface with a larger area) of the second base plate section 410 can be parallel to the first surface 200A, and a large surface (a surface with a larger area) of the second side plate section 420 can be parallel to the second surface 200B. The second base plate section 410 can abut and be firmly connected to the first surface 200A, in particular, it can be connected to the slotted base connection section 230 along the third direction Z.At this point, the two second side plate sections 420 can be spaced apart from each other along the first direction X, and each of the two second side plate sections 420 can be connected to the second surface 200B of the slotted bottom connection section 230 to improve the connection security of the second connecting element 400 and the second support body 200. The two wing plate sections 430 can each be connected to the two second side plate sections 420, and both wing plate sections 430 can be located on a side of the corresponding second side plate section 420 facing away from the second bottom plate section 410, and both wing plate sections 430 can be connected to the first support body 100 along the third direction Z. In this way, the second connecting element 400 can be connected to the first support body 100 and the second support body 200 simultaneously.

[0064] With regard to its orientation and positional relationship in practical application, the second connecting element 400 is located on the top side of the first support body 100 and does not occupy the interior of the lower receiving space 1400. This makes it less likely to interfere with the battery 2000 and cause problems such as a battery safety failure. Since the first connecting element 300 is connected to the second support body 200 in the second direction γ, the portion of the second support body 200 located on the top side of the first support body 100—i.e., the slotted bottom connection section 230 above—is subject to a greater risk of deformation. This risk of deformation is particularly high if the second support body 200 is hollow.At this point, providing the second connecting element 400 above, to encompass the slotted bottom connection section 230 and connect it to the first support body 100, can increase the connection area and significantly reduce the risk of deformation failure at the slotted bottom connection section 230, thereby greatly improving the reliability of the connection between the first support body 100 and the second support body 200. Simultaneously, the second connecting element 400 is also helpful in ensuring that the relative positions of the first support body 100 and the second support body 200 in the third direction Z can be adjusted to accommodate the difference in dimensions between the first support body 100 and the second support body 200 in the third direction Z.

[0065] Furthermore, the second connecting element 400 also serves as a reinforcement, which can reduce the connection failure between the first support body 100 and the second support body 200 due to deformation failure of the first connecting element 300. Simultaneously, the second connecting element 400 and the first connecting element 300 can achieve the connection fastening of the first support body 100 and the second support body 200 in three directions, thereby improving the connection fastening between the first support body 100 and the second support body 200.

[0066] The second connecting element 400 can be connected to the first support body 100 and the second support body 200 in a manner consistent with the first connecting element 300 described above, and is not repeated here.

[0067] In a specific example in connection with Fig.9. The second base plate section 410 can be provided with a second base plate connection hole 411, the second side plate section 420 can be provided with a second side plate connection hole 421, and the wing plate section 430 can be provided with a wing plate connection hole 431. Screws, rivets, and other forms of fasteners can pass through the second base plate connection hole 411 and can be used to connect the second base plate section 410 to the second support body 200. Both the second side plate connection hole 421 and the wing plate connection hole 431 can be filled with solder to weld the second side plate section 420 to the second support body 200 and the wing plate section 430 to the first support body 100.

[0068] The foregoing is only a preferred embodiment of the present invention, and it should be noted that for a person of ordinary knowledge in the field, a number of improvements and embodiments can be made without derogation from the principles of the present invention, and these improvements and embodiments should also be considered as being within the scope of protection of the present invention.

Claims

[1] Battery casing, characterized bythat it comprises a base plate, a surrounding frame and a separating support assembly, wherein the surrounding frame is provided around the base plate, and wherein the surrounding frame is rigidly connected to the base plate, the base plate and the surrounding frame forming a receiving compartment, the receiving compartment being used to receive a plurality of batteries, the separating support assembly comprising a first support body, a second support body and a first connecting element, the first support body extending in a first direction while the second support body extending in a second direction, the first direction and the second direction being provided at a first angle to each other, the first angle being 85° to 95°, the first direction and the second direction both being parallel to a large area of ​​the base plate,wherein the first support body and the second support body subdivide the receiving compartment into a plurality of sub-receiving compartments, wherein the first connecting element comprises a first base plate section and two first side plate sections connected to each other, the first base plate section being rigidly connected to the first support body along the second direction, while the two first side plate sections are spaced apart from each other along the first direction and both first side plate sections are connected to the second support body along the first direction, a projection of the second support body along the second direction covering the first base plate section. [2] Battery housing according to claim 1, characterized by that the first side plate section is located within an inner cavity of the second support body. [3] Battery housing according to claim 2, characterized by, that the second support body comprises two second support plates arranged opposite each other along a third direction, the third direction being at a second angle to both the first and second directions, the second angle being 85° to 95°, one of the two second support plates being provided with a deflection notch; the first connecting element having a dimension of L1 in the second direction, the deflection notch having a dimension of L2 in the second direction, the second support body having a dimension of L3 in the second direction, where 0.3×L3≥L2≥L1. [4] Battery housing according to claim 1, characterized by , that the first side plate section is located on an outside of the second support body, wherein the first side plate section has a thickness of 0.5 mm to 3 mm. [5] Battery housing according to claim 4, characterized bythat the first side plate section is provided with an insulating layer on at least one side facing away from the second support body along the first direction. [6] Battery housing according to claim 4, characterized by , that the second direction is a forward-reverse direction of the vehicle, wherein the thickness of the first support body is greater than the thickness of the second support body; wherein the second support body is provided with a groove section extending along the third direction, the third direction being provided at a second angle to both the first direction and the second direction, wherein the first support body is inserted into the groove section along the third direction. [7] Battery housing according to any one of claims 1 to 6, characterized bythat it further comprises a second connecting element, wherein the second connecting element comprises a second base plate section, two second side plate sections, and two wing plate sections, wherein the second base plate section is connected to the two wing plate sections by the two second side plate sections, wherein the second base plate section is provided on an upper part of the second support body and is firmly connected to the second support body, wherein a large area of ​​the second base plate section is parallel to a first surface of the second support body, wherein the second side plate section is provided parallel to a second surface of the second support body, wherein the first surface and the second surface are provided at a third angle to each other, wherein the third angle is 60° to 120°,wherein the two wing plate sections are provided on the upper part of the first support body and are firmly connected to the first support body, wherein the wing plate sections are provided parallel to the first surface, wherein the dimension of the second support body is larger than the dimension of the first support body along a third direction, wherein the third direction is provided at a second angle to both the first direction and the second direction, wherein the second angle is 85° and 95°. [8] Battery housing according to claim 6, characterized by , that the projection of the groove section along the first direction is rectangular, wherein the sum of the dimensions of the first support body and the two first base plate sections in the second direction is adapted to the dimensions of the groove section in the second direction. [9] Battery housing according to claim 6, characterized by, that the groove section comprises a first slot segment and a second slot segment, wherein the second slot segment is located relative to the first slot segment near a slot opening of the groove section, wherein the dimension of the second slot segment in the second direction is larger than the dimension of the first slot segment in the second direction; wherein the dimension of the first support body in the second direction is adapted to the dimension of the first slot segment in the second direction, while the sum of the dimensions of the second support body and the two first base plate sections in the second direction is adapted to the dimension of the second slot segment in the second direction. [10] Battery housing according to any one of claims 1 to 6, 8, 9, characterized by, that at least one of the first support body and the second support body is connected to the first connecting element by a combination of welding and connecting elements. [11] Battery housing according to any one of claims 1 to 6, 8, 9, characterized by , that the ratio of the dimension of the first connecting element in the third direction to the dimension of the first support body in the third direction is 0.6 to 1, wherein the third direction is provided at an angle to the first direction and the second direction, and wherein the projection of the first support body along the second direction covers the first connecting element. [12] Battery housing according to any one of claims 1 to 11, characterized by , that a reinforcement section is further provided between the first base plate section and the first side plate section. [13] Battery housing according to claim 12, characterized bythat the reinforcement section is an inward projection formed between the first base plate section and the first side plate section, wherein the projection is preferably formed by punching a localized position at the junction of the first base plate section and the first side plate section. [14] Battery housing according to one of claims 12 to 13, characterized by that two or more of the reinforcement sections are arranged between the first side plate section and the first bottom plate section. [15] Battery pack, characterized by , comprising a battery housing and a plurality of batteries provided within the battery housing, wherein the battery housing is a battery housing according to any one of claims 1 to 14.

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