Battery mounting box and battery package

Abstract

The present disclosure provides a battery mounting housing including a housing and a support structure, the housing having a decompression hole, the support structure being installed within the housing to support a battery pack, the support structure including a tray and at least one support rib installed on a bottom of the tray, the support rib being supported between the tray and a bottom plate of the housing to form a decompression cavity between the tray and the bottom plate, and the decompression cavity being in communication with the decompression hole, allowing gas to be discharged through the decompression hole.

Description

[Technical Field]

[0001] This disclosure claims priority to Chinese patent applications filed with the China Patent Office on March 31, 2023, bearing application numbers 202320697957.0 and 202320713458.6, respectively, the entire contents of which are incorporated herein by reference. The present disclosure relates to the technical field of batteries, and in particular to battery mounting housings and battery packages. [Background technology]

[0002] A power battery module according to the related art includes a housing and a tray installed within the housing. The tray supports a plurality of battery cells, forming a vacuum cavity between the tray and the housing. A bottom support is installed within the housing to support the tray. When installed, the bottom support must be aligned with the tray, which results in a complex internal structure of the housing, complicated installation, a large number of parts, and an increase in the weight of the housing. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure provides a battery mounting case and a battery package to solve the above problems. [Means for solving the problem]

[0004] In a first aspect, the battery mounting housing provided in the present disclosure includes a housing and a support structure, wherein a pressure reduction hole is provided in the housing, and the support structure is installed within the housing to support a battery pack, and the support structure includes a tray and at least one support rib installed on a bottom of the tray, and the support rib is supported between the tray and a bottom plate of the housing to form a pressure reduction cavity between the tray and the bottom plate, and the pressure reduction cavity is connected to the pressure reduction hole, so that gas can be discharged through the pressure reduction hole.

[0005] In a second aspect, the present disclosure provides a battery package including a battery pack and the battery mounting housing, wherein the support structure of the battery mounting housing is configured to support the battery pack. [Effects of the Invention]

[0006] In the battery mounting housing provided in the present disclosure, a support rib is installed on the bottom of the tray, which is supported between the bottom plate of the housing and the tray, forming a decompression cavity between the tray and the bottom plate. If the battery experiences thermal runaway, gas is released into the decompression cavity, and the air pressure is eventually released through the decompression hole in the housing. That is, by molding the support rib on the bottom of the tray, a decompression cavity can be formed between the tray and the bottom plate of the housing through the support of the support rib, thereby reducing the number of steps for attaching the bottom support and the tray, simplifying the molding of the housing, and reducing the bottom support and weight of the housing. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a structural schematic diagram of a battery mounting case provided in Example 1 of the present invention; [Figure 2] FIG. 2 is a structural schematic diagram of the battery mounting case after the top cover in FIG. 1 has been hidden. [Figure 3] 3 is a plan view of the battery mounting case after the top cover in FIG. 2 has been hidden. [Figure 4] FIG. 4 is a cross-sectional view taken along the direction AA in FIG. [Figure 5] FIG. 2 is a structural schematic diagram of the battery mounting case after the top cover and support structure in FIG. 1 are hidden. [Figure 6] FIG. 3 is a structural schematic diagram of one viewing angle of the support structure in FIG. 2. [Figure 7] 3 is a structural schematic diagram of the support structure in FIG. 2 from another viewing angle. [Figure 8] FIG. 8 is a top view of the support structure in FIG. 7. [Figure 9] FIG. 2 is a structural schematic diagram of the battery mounting case with the top cover, support structure, and part of the frame hidden in FIG. 1. [Figure 10]FIG. 3 is a structural schematic diagram of the frame and vertical beams in FIG. 2. [Figure 11] FIG. 10 is a structural schematic diagram of a battery mounting case provided in Example 2. [Figure 12] FIG. 12 is a top view of the battery mounting case of the present invention shown in FIG. 11. [Figure 13] 13 is a cross-sectional view taken along the AA direction in FIG. 12. FIG. [Figure 14] FIG. 14 is an enlarged schematic view of I in FIG. [Figure 15] FIG. 12 is an exploded schematic view of the cross beam and relay structure in FIG. [Figure 16] FIG. 12 is a structural schematic diagram of the relay structure in FIG. 11 at one viewing angle. [Figure 17] 12 is a structural schematic diagram of the relay structure in FIG. 11 at a different viewing angle. FIG. [Figure 18] 1 is an exploded structural schematic diagram of a battery mounting case provided in an embodiment of the present disclosure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Example 1 1 to 10, a battery mounting housing 100 provided in an embodiment of the present disclosure includes a housing 10 and a support structure 40.

[0009] 1 to 4 to 18 , a decompression hole 111 is provided in the housing 10. A support structure 40 is provided in the housing 10 to support the battery pack, the support structure 40 including a tray 41 and at least one support rib 42 provided on the bottom of the tray 41, the support rib 42 being supported between the tray 41 and the bottom plate 18 of the housing 10 to form a decompression cavity 43 between the tray 41 and the bottom plate 18, and the decompression cavity 43 and the decompression hole 111 are in communication with each other, allowing gas to be discharged through the decompression hole 111.

[0010] The battery mounting housing 100 is supported between the tray 41 and the bottom plate 18 of the housing 10 by providing support ribs 42 on the bottom of the tray 41, and a decompression cavity 43 can be formed between the tray 41 and the bottom plate 18. If the battery experiences thermal runaway, gas will be released into the decompression cavity 43, and the air pressure will eventually be released through the decompression holes 111 of the housing 10. That is, by molding the support ribs 42 on the bottom of the tray 41, the decompression cavity 43 can be formed between the tray 41 and the bottom plate 18 of the housing 10 with the support of the support ribs 42, thereby reducing the number of steps required to attach the bottom support and the tray 41, simplifying the molding of the housing 10, and reducing the weight of the housing 10 by reducing the number of bottom supports.

[0011] Here, the battery in this embodiment is described as a cylindrical battery as an example, and the tray 41 is installed to support the cylindrical batteries, and positioning holes 411 are installed corresponding to the mounting positions of each cylindrical battery, and the positioning holes 411 are connected to the decompression cavity 43 along the height direction of the cylinder, so that the gas ejected when the cylindrical battery is decompressed can flow into the decompression cavity 43.

[0012] 2 to 5, in one embodiment of the present application, the housing 10 includes a frame 24, a bottom plate 18, at least one longitudinal beam 22, and at least one horizontal beam 23, the frame 24 and the bottom plate 18 are surrounded to form an accommodating space 11, the longitudinal beam 22 and the horizontal beam 23 are both installed in this accommodating space 11, a decompression hole 111 is formed in the frame 24, and a decompression communication port 221 that communicates with the decompression cavity 43 is formed in the vertical beam 22, the decompression communication port 221 communicates the decompression cavity 43 with the decompression hole 111, and the vertical beam 22, the horizontal beam 23, and the frame 24 are sequentially connected. That is, the longitudinal beam 22, the horizontal beam 23, the horizontal beam 23, and the frame 24 all have decompression passages 21 that communicate with each other formed in them. When gas is generated in the decompression cavity 43, the airflow passes through the decompression passages 21 in the vertical beams 22, the decompression passages 21 in the horizontal beams 23, and the decompression passages 21 in the frame 24, and is finally ejected from the communicating outlet on the frame 24.

[0013] Here, when the vertical beams 22 and the horizontal beams 23 are installed in the frame 24, the vertical beams 22 and the side walls of the frame 24 are installed in contact with each other, and the horizontal beam 23 is installed at one end of the vertical beam 22 so as to communicate with the vertical beam 22. In order to ensure the sealing of the decompression passage 21, the horizontal beam 23 and the vertical beam 22 are connected by welding, thereby ensuring the sealing of the communication between them.

[0014] Furthermore, in order to ensure the molding of the vertical beams 22 and the frame 24 and simplify the installation steps, in this embodiment the vertical beams 22 and the frame 24 are molded as a single unit, so that the vertical beams 22 can be molded simultaneously when the frame 24 is molded, thereby simplifying the subsequent installation steps of the frame 24 and the vertical beams 22, increasing the installation efficiency of the entire battery mounting case 100, and improving the overall structural strength of the frame 24 and the vertical beams 22.

[0015] 10 , the frame 24 and the bottom plate 18 are connected by welding. To ensure the connection strength of the frame 24 while reducing its weight, the frame 24 of this embodiment has a hollow structure. The hollow structure is provided with at least one first reinforcing rib 101 arranged along a first direction a and at least one second reinforcing rib 102 arranged along a second direction b. The second reinforcing rib 102 is connected between the bottom wall of the frame 24 and one of the first reinforcing ribs 101, and the first and second directions are perpendicular to each other. Specifically, the first direction a is parallel to the longitudinal beams 22 and the cross beams 23, and the second direction is the height direction of the frame 24. The provision of the first reinforcing rib 101 increases the structural strength of the frame 24, and the provision of the second reinforcing rib 102 ensures the structural strength of the entire frame 24 when welding the frame 24 and the bottom plate 18. At the same time, the frame 24 of this embodiment simplifies the cavity structure, facilitates extrusion molding, and improves molding efficiency.

[0016] 7 and 8, the vertical beams 22 are provided with decompression communication ports 221 that communicate with the decompression cavities 43. Therefore, when the support ribs 42 are installed on the tray 41, the support structure 40 includes a plurality of support ribs 42, and one exhaust passage 431 is formed between two adjacent support ribs 42. That is, the exhaust passage 431 is part of the decompression cavity 43, and the exhaust passage 431 is installed toward the vertical beams 22, thereby forming the exhaust passage 431 between the support ribs 42. This allows the support ribs 42 to guide gas generated when a cylindrical battery experiences thermal runaway to the vertical beams 22, allowing the gas to quickly reach the decompression communication ports 221 on the vertical beams 22 and thus quickly discharge the gas through the decompression holes 111 on the frame 24.

[0017] Here, when the decompression vent 221 is provided on the vertical beam 22, the decompression vent 221 may be provided on a side wall of the vertical beam 22 facing the tray 41, or in one embodiment, on a bottom wall of the vertical beam 22 facing the bottom plate 18, either of which can realize airflow conduction, and thereby the specific position of the decompression vent 221 can be set according to actual needs when molding the housing 10. At the same time, when the decompression vent 221 is provided on the vertical beam 22, multiple decompression vents 221 may be provided that are spaced apart from each other, or only one decompression vent 221 with a large opening area may be provided, and this is not limited thereto.

[0018] 9, specifically, one pressure reduction vent 221 is provided on the vertical beam 22 in this embodiment, and the pressure reduction vent 221 is provided at one end of the vertical beam 22 and at one end away from the horizontal beam 23. In order for the support ribs 42 to fully realize their guiding function, the support ribs 42 are provided at an incline toward the pressure reduction vent 221. As a result, when the cylindrical battery emits gas, the airflow flows into the exhaust passage 431 formed between the support ribs 42 and flows toward the pressure reduction vent 221, allowing the gas to flow quickly into the pressure reduction vent 221.

[0019] When the inclined support ribs 42 are installed, in one embodiment, the support ribs 42 may be installed in a straight line, forming exhaust passages 431 between the parallel support ribs 42, and the straight support ribs 42 can achieve a flow guidance effect. Specifically, the housing 10 includes two opposing longitudinal beams 22, and the cross beam 23 is connected to one end of the two longitudinal beams 22, corresponding to the installation of the end ports of the two longitudinal beams 22. In this embodiment, the support ribs 42 are V-shaped, and the openings of the support ribs 42 face the pressure reduction ports 221. Therefore, when gas is released from the cylindrical batteries, the airflow flows into the V-shaped exhaust passage 431 and into the two pressure reduction ports 221 located at both ends, corresponding to the installation positions of the V-shaped support ribs 42 and the pressure reduction ports 221 at one end of the vertical beams 22.

[0020] Here, when the support structure 40 of this embodiment is mounted inside the housing 10, the first support plate 222 is installed on the vertical beams 22, and the first support plate 222 is installed to support the tray 41, thereby realizing support of the tray 41 in accordance with the support ribs 42 by installing the first support plate 222 on the vertical beams 22. In other words, the tray 41 is supported in accordance with the bottom plate 18, and the support strength of the housing 10 for the tray 41 can be increased. At this time, it can be understood that there is a first gap between the first support plate 222 and the bottom plate 18, which prevents airflow from flowing into the positioning holes 411 of the vertical beams 22 when the first support plate 222 and the bottom plate 18 are in direct contact with each other.

[0021] When the decompression opening 221 is installed on the vertical beam 22, the bottom surface of the vertical beam 22 can contact the bottom plate 18, and the vertical beam 22 is supported by the bottom plate 18. In this case, the decompression opening 221 is installed on the side wall within the height range corresponding to the first interval of the vertical beam 22, so that the gas in the decompression cavity 43 can flow into the decompression passage 21 of the vertical beam 22. Alternatively, in another embodiment, there is also a gap between the vertical beam 22 and the bottom plate 18, and the decompression opening 221 is installed toward the bottom wall of the bottom plate 18 of the vertical beam 22, so that the airflow can also flow from the decompression opening 221 into the decompression passage of the vertical beam 22.

[0022] Specifically, in order to ensure the heat dissipation effect during decompression, in this embodiment, when the decompression communication port 221 is installed on the vertical beam 22, there is a second gap between the vertical beam 22 and the bottom plate 18, and the decompression communication port 221 is installed on the bottom wall of the vertical beam 22 facing the bottom plate 18, so that the area between the vertical beam 22 and the bottom plate 18 is also part of the decompression cavity 43 and is also a gas flow area. Compared to the method in which the bottom surface of the vertical beam 22 and the bottom plate 18 are in direct contact and abutment, the vertical beam 22 and the bottom plate 18 are installed so that there is a second gap between them, which increases the airflow flow area, facilitates airflow heat dissipation, and improves the airflow heat dissipation effect.

[0023] Specifically, in order to increase the support strength of the entire housing 10, a third reinforcing rib 181 is provided on the bottom plate 18 in this embodiment, and the third reinforcing rib 181 is provided so as to support the support rib 42. By providing the third reinforcing rib 181, the support strength of the bottom plate 18 is improved, and impact resistance is ensured when the housing 10 is to be arranged as a battery pack.

[0024] As can be understood, the first distance in this embodiment may be set to be equal to or less than the second distance, and in either case, the effect of airflow flowing into the decompression communication port 221 of the vertical beam 22 can be achieved. When the first distance is set equal to the second distance, the bottom surface of the first support plate 222 and the bottom surface of the vertical beam 22 are flush with each other, and when the first distance is smaller than the second distance, the bottom surface of the first support plate 222 is lower than the bottom surface of the vertical beam 22.

[0025] Specifically, in this embodiment, the first support plate 222 is installed so that the first distance is equal to the second distance. That is, the vertical beams 22 and the first support plate 222 are supported by the third reinforcing rib 181 on the bottom plate 18, thereby increasing the overall support strength for the tray 41. That is, the third reinforcing rib 181 extends to the bottom of the vertical beams 22, and the height of the third reinforcing rib 181 is equal to the second distance between the vertical beams 22 and the bottom plate 18, thereby simultaneously supporting the vertical beams 22 and the first support plate 222, and thus indirectly strengthening the support effect for the tray 41.

[0026] 4, in order to enhance the structural strength of the vertical beam 22, at least one reinforcing plate 223 is installed in the vertical beam 22 in the longitudinal direction of the vertical beam 22, and the installation of the reinforcing plate 223 on the vertical beam 22 enhances the support strength of the vertical beam 22. Specifically, in this embodiment, the reinforcing plate 223 is installed in the vertical direction, and multiple reinforcing plates 223 are installed on the vertical beam 22, and the multiple reinforcing plates 223 are installed at a distance from each other, and the multiple reinforcing plates 223 enhance the structural strength of the vertical beam 22.

[0027] Furthermore, to increase the support strength of the entire housing 10, second support plates 232 are installed on the cross beams 23 in this embodiment, and the second support plates 232 and the first support plates 222 are installed to jointly support the tray 41. That is, when the support structure 40 is installed in the housing 10, two first support plates 222 on two vertical beams 22 and one second support plate 232 on one cross beam 23 are simultaneously arranged as a support tray 41 to increase the support strength for the tray 41. Here, when the second support plate 232 is installed, it is installed so that there is also a first gap between the second support plate 232 and the bottom plate 18; that is, the second support plate 232 can be supported by the third reinforcing rib 181.

[0028] 1 to 5 and 6, in one embodiment of the present application, the battery mounting housing 100 further includes a plurality of hook portions 50, which are spaced apart from one another on the outer wall of the housing 10. The hook portions 50 and the frame 24 can be molded separately. Compared to the current production method in which the hook portions 50 and the frame 24 are integrally extruded, molding the chamfered hook portions 50 is more convenient and the mold is simpler, thereby improving molding efficiency of the hook portions 50 and the frame 24.

[0029] Specifically, the hook portions 50 of this embodiment are formed by extrusion molding and are connected to the housing 10 by welding. Extrusion molding makes it easy to form each of the hook portions 50.

[0030] Furthermore, in order to reduce the weight of the hook portions 50, that is, to reduce the weight of the entire battery mounting housing 100, the hook portions 50 have a hollow structure, that is, a through-hole 501 is formed in each of the hook portions 50.

[0031] Here, in the method of decompressing the gas in this embodiment, as shown in FIG. 3, the gas flows from the vertical beams 22 to the horizontal beams 23 and is then discharged from the decompression holes 111 in the frame 24.

[0032] As can be seen, to ensure the integrity of the battery mounting housing 100, the battery mounting housing 100 further includes a top cover 60, which is positioned to cover the housing 10, and more particularly, is positioned to cover the frame 24 to protect the battery pack in the housing 10.

[0033] In another embodiment, the present application further provides a battery package, which includes a battery pack and the above-mentioned battery mounting case 100, and the support structure 40 in the battery mounting case 100 is installed to support the battery pack.

[0034] Specifically, a plurality of positioning holes 411 are provided in the tray 41 of the support structure 40, and a cylindrical battery is provided in each of the positioning holes 411. When the cylindrical battery experiences thermal runaway, gas discharged from the pressure reducing valve in the cylindrical battery flows to the pressure reducing hole 111 in the housing 10 via the pressure reducing cavity 43 connected to the positioning holes 411, and can then flow out through the pressure reducing hole 111.

[0035] Example 2 A power battery module according to the related art includes a frame and a beam body installed within the frame, the frame being higher than the beam body, the beam body being arranged to support a battery pack, a pressure reduction hole being installed in the frame, a pressure reduction passage being installed in the beam body, the pressure reduction hole and the pressure reduction passage being connected, and when the battery is experiencing thermal runaway, the generated gas can be discharged sequentially through the beam body and the frame.

[0036] In the related art, when the beam body and the frame are connected through a pipe, the position of the decompression hole on the frame is aligned with the position of the decompression passage on the beam body, and the size of the pipe with a small diameter is matched. At the same time, in order to ensure the structural strength of the frame, the position of the decompression hole opened on the frame is low, which reduces the area for opening a cavity where the frame and the pipe communicate. As a result, it is inconvenient to close both sides of the position for opening the cavity on the frame. In this case, the low position of the decompression hole opened on the frame reduces the strength when welding the frame to the bottom plate.

[0037] 11 to 18, a battery mounting case 100 provided for an embodiment of the present application includes a frame 24, a beam body 20, and a relay structure 30.

[0038] 11 to 13, a decompression hole 111 is provided in the frame 24, and the frame 24 forms the accommodation space 11. The beam body 20 is installed in the accommodation space 11, and a decompression passage 21 is formed in the beam body 20, connecting the accommodation space 11 and the decompression passage 21. The relay structure 30 is installed in the accommodation space 11, and both ends of the relay structure 30 are connected between the decompression passage 21 and the decompression hole 111. In addition, along the height direction h of the frame 24, the height at which the relay structure 30 is connected to one end of the decompression hole 111 is higher than the height at which the relay structure 30 is connected to the other end of the decompression passage 21.

[0039] It can be understood that if there is no decompression cavity in the housing 10 , the accommodation space 11 is directly connected to the decompression passage 21 in the beam body 20 .

[0040] When a decompression cavity 43 in Example 1 is formed between the tray 41 and the bottom plate 18 in the housing 10, all of the decompression cavities 43 formed between the tray 41 and the bottom plate 18 are located within the storage space 11, and in this case, the decompression cavities 43 are connected to the decompression passage 21 in the beam body 20.

[0041] In the battery mounting housing 100, the relay structure 30 is installed on the frame 24, and the height at which the relay structure 30 communicates with one end of the decompression hole 111 in the height direction h of the frame 24 is higher than the height at which the relay structure 30 communicates with the other end of the decompression passage 21. In this way, when the decompression hole 111 is installed on the frame 24 using the relay structure 30 having two communicating ends at different heights, the height of the decompression hole 111 can be installed higher than the height of the decompression passage 21. For example, in this case, the decompression hole 111 can be installed on the upper part of the frame 24 in the height direction h of the frame 24. If the decompression hole 111 can be installed as a main body or cavity at the lower part of the frame 24, a reinforcing rib can be installed in the cavity, thereby ensuring the overall strength of the frame 24. At the same time, while ensuring the structural strength of the frame 24, the opening position of the decompression hole 111 can be located in the upper half of the frame 24, so that when opening a cavity in the frame 24 that communicates with the decompression hole 111, a wider opening can be provided, and when closing the frame 24, a relatively large operating space is provided, making it easier to close the cavity on the frame 24. Therefore, the installation of the relay structure 30 improves the structural strength and manufacturing efficiency of the entire frame 24.

[0042] In this embodiment, the opening height of the decompression hole 111 may be higher than the opening height of the decompression passage 21, and the height of the center position of the decompression hole 111 may be higher than the height of the center position of the decompression passage 21, or the height of the upper end of the decompression hole 111 along the height direction of the frame 24 may be higher than the height of the upper end of the decompression passage 21. It can be understood that in these two methods, the projection of the decompression hole 111 on the decompression passage 21 along the longitudinal direction of the frame 24 may partially overlap or may not completely overlap.

[0043] 13, when the decompression hole 111 and the decompression passage 21 are installed in this embodiment, the center of the decompression hole 111 is higher than the center of the decompression passage 21. A first cavity 121 is also formed in the frame 24 at a position corresponding to the decompression hole 111, and the first cavity 121 and the decompression hole 111 are connected to each other, so that the air pressure sent from the relay structure 30 first passes through the first cavity 121 and is then discharged along the decompression valve attached to the decompression hole 111. Since the projection of the decompression hole 111 on the decompression passage 21 partially overlaps with the projection of the decompression hole 111 along the height direction h of the frame 24, the first cavity 121 can have a relatively large opening area to achieve a rapid decompression effect.

[0044] 11, 12 and 15, in one embodiment of the present application, when the beam body 20 is installed in the frame 24, the beam body 20 includes a vertical beam 22 and a horizontal beam 23, and the vertical beam 22 and the horizontal beam 23 are both provided with a pressure reduction passage 21, the corresponding pressure reduction passages 21 of the vertical beam 22 and the horizontal beam 23 are sequentially connected, the vertical beam 22 is provided with a pressure reduction communication port 221 that communicates with the pressure reduction cavity 43, the horizontal beam 23 is provided with a first communication port 231 that communicates with the relay structure 30, and the relay structure 30 is connected between the horizontal beam 23 and the pressure reduction hole 111. Since the installation areas for the water cooling system, wiring harness, and BMS are formed between the cross beam 23 and the frame 24, the relay structure 30 is arranged to communicate with the cross beam 23, i.e., to correspond to the installation areas for the water cooling system, wiring harness, and BMS, thereby enabling a reasonable match between the space occupied by the relay structure 30 and the installation space for the water cooling system, wiring harness, and BMS. Compared to the method of connecting the relay structure 30 between the vertical beam 22 and the frame 24, in this case it is necessary to increase the extension width along the extension direction of the cross beam 23. As a result, connecting the relay structure 30 between the cross beam 23 and the frame 24 contributes to a reasonable reduction in the space occupied by the battery mounting case 100.

[0045] Specifically, the extending direction of the vertical beams 22 is the longitudinal direction a of the frame 24, the extending direction of the horizontal beams 23 is the width direction b of the frame 24, and the frame 24 further has a height direction h.

[0046] 15 to 17, when an intermediate structure 30 is installed to connect the decompression holes 111 and the decompression passage 21 at different heights, the intermediate structure 30 extends along the longitudinal direction of the vertical beam 22, i.e., along the longitudinal direction a of the frame 24. The intermediate structure 30 is provided with a second communication port 311 and a third communication port 321 that are connected to each other, the opening height of the third communication port 321 is higher than that of the second communication port 311, the second communication port 311 is connected to the cross beam 23, and the third communication port 321 is connected to the frame 24. In other words, by installing the intermediate structure 30 so that it extends along the longitudinal direction a of the vertical beam 22, the space occupied by the intermediate structure 30 can be reduced to fit the space of the frame 24. Furthermore, compared to an intermediate structure 30 that is formed by bending, an intermediate structure 30 that is installed along the linear length direction of the vertical beam 22 can easily be formed, thereby improving production efficiency.

[0047] Specifically, in accordance with the installation method of the second communication port 311 and the third communication port 321, the relay structure 30 of this embodiment includes a first communication portion 31 and a second communication portion 32 that are connected to each other, and along the height direction h of the frame 24, the second communication portion 32 is installed at the top of the first communication portion 31, the first communication portion 31 is installed with the second communication port 311, and the second communication portion 32 is installed with the third communication port 321. In other words, the first communication portion 31 is connected to the cross beam 23, and the second communication portion 32 is connected to the frame 24. That is, the relay structure 30 is arranged to include a first communication section 31 and a second communication section 32 at different heights, thereby adapting to the structures of the cross beam 23 and the frame 24. When pressure reduction is required, the pressure flows sequentially from the cross beam 23 to the first communication section 31, then to the second communication section 32, and finally to the pressure reduction hole 111 on the frame 24, thereby achieving pressure reduction. At the same time, the relay structure 30 installed in this embodiment simplifies the pressure reduction method, reduces the pressure drop, and contributes to the rapid release of pressure in the accommodation space 11 through the pressure reduction hole 111. In another embodiment, to save the overall space occupied by the relay structure 30 along the height direction of the frame 24, the relay structure 30 may be tubular, with one pipe connected to the cross beam 23 and one pipe connected to the frame 24, and a corner piece connected between the two pipes, thereby achieving pressure reduction from the cross beam 23 to the frame 24.

[0048] In addition, in order to facilitate rapid release of pressure, an intermediary structure decompression cavity 34 is formed in the intermediary structure 30 along the height direction of the frame 24, and the intermediary structure decompression cavity 34 is connected to the decompression hole 111 and the decompression passage 21 of the cross beam 23, respectively. The placement of the intermediary structure decompression cavity 34 in the frame 24 contributes to rapid release of pressure, and at the same time, the cross-sectional area of ​​the intermediary structure decompression cavity 34 along the height direction h of the frame 24 can be increased, further contributing to pressure release. In addition, the manner in which the cavity is arranged in the intermediary structure 30 reduces the weight of the intermediary structure 30 and contributes to making it easier to form the intermediary structure 30.

[0049] Specifically, the relay structure has a first reinforcing plate 33 installed in the decompression cavity 34, and the first reinforcing plate 33 divides the relay structure decompression cavity 34 into an upper cavity 322 and a lower cavity 312 that communicate vertically. The lower cavity 312 corresponding to the second communication port 311 is installed in the first communication portion 31, and the upper cavity 322 corresponding to the third communication port 321 is installed in the second communication portion 32. In other words, a cavity is formed inside the first communication portion 31, and the cavity extends in the height direction h of the frame 24. This can increase the cross-sectional area of ​​the lower cavity 312 in the height direction h of the frame 24, contributing to rapid pressure release and reducing the weight of the first communication portion 31. At the same time, a cavity is formed inside the second communicating portion 32, and this cavity extends in the height direction h of the frame 24, i.e., an upper cavity 322 is formed, which can increase the cross-sectional area of ​​the upper cavity 322 along the height direction h of the frame 24, contributing to rapid release of pressure and reducing the weight of the second communicating portion 32.

[0050] Specifically, the direction of air pressure flow in the frame 24 is shown in Figure 4. At the same time, the first reinforcing plates 33 extend in the extension direction of the vertical beams 22, that is, are installed along the longitudinal direction of the frame 24 between the first communicating portion 31 and the second communicating portion 32, and by increasing the number of first reinforcing plates 33, the structural strength of the entire relay structure 30 can be increased.

[0051] In order to facilitate the support and installation of the water cooling system, wire harness, and BMS, it can be seen that the upper surface of the relay structure 30 in this embodiment is flat, so as to conform to the shape of the cross beam 23 that is arranged to support components such as the water cooling system, wire harness, and BMS within the battery mounting housing 100.

[0052] Specifically, in this embodiment, the side walls of the first communicating portion 31 and the second communicating portion 32 are both flat, which makes it easy to attach them to the water cooling system, wire harness, and BMS, and provides a support effect.

[0053] As can be seen, since structures such as a water cooling system and piping wiring harnesses need to be installed above the cross beam 23, to avoid this and rationalize the spatial layout, a portion of the relay structure 30 forms a stepped notch 323 toward the upper cavity 322, and the stepped notch 323 communicates with the upper surface of the relay structure 30. Specifically, the second communicating portion 32 forms a notch 323 in the first communicating portion 31 toward the cross beam 23. That is, the length of the second communicating portion 32 is shorter than the length of the first communicating portion 31 along the extension direction of the vertical beam 22, so that the stepped notch 323 formed in the second communicating portion 32 facilitates the installation of the wiring harness structure. Specifically, referring to FIG. 4 , the opening of the stepped notch 323 formed in the second communicating portion 32 in this embodiment is closed by a first closing plate.

[0054] 13 and 17, a gap d is provided between the first reinforcing plate 33 and the frame 24 so that the upper cavity 322 and the lower cavity 312 are connected to each other, allowing air pressure to flow smoothly from the cross beam 23 to the frame 24. This gap d allows air pressure to flow from the lower cavity 312 to the flow space of the upper cavity 322, allowing air pressure to flow smoothly from the cross beam 23 to the frame 24. In another embodiment, to ensure the structural strength of the entire relay structure 30, a through-hole may be provided in the first reinforcing plate 33 to form a flow space through which air flows from the second communication port 311 to the third communication port 321. Accordingly, the first reinforcing plate 33 may be provided so as to connect to opposing side walls along the longitudinal direction of the vertical beam 22 of the relay structure 30, thereby achieving the effect of strengthening the entire relay structure 30.

[0055] Here, in this embodiment, the first reinforcing plate 33 and the relay structure 30 are integrally molded, which facilitates molding of the entire relay structure 30. Specifically, since the second communicating portion 32 forms a stepped notch 323 in the first communicating portion 31, in order to facilitate attachment of the first communicating portion 31 and the second communicating portion 32, the first reinforcing plate 33 in this embodiment is connected to the first communicating portion 31 and integrally molded with the first communicating portion 31. That is, in this case, when closing the second communicating portion 32, attachment of the first closing plate is facilitated, and the first closing plate is welded to the end of the first reinforcing plate 33 at the same time. Furthermore, the first reinforcing plate 33 and the second communicating portion 32 are integrally molded, which facilitates molding of the entire relay structure 30.

[0056] Referring to Figure 14, in one embodiment of the present application, the battery mounting case 100 further includes a partition plate 19, and the frame 24 is divided by the partition plate 19 into an upper communicating section 12 and a lower support section 13. The frame 24 is installed in the upper communicating section 12 in a first cavity 121 that is connected to the decompression hole 111. By arranging the frame 24 to include the upper communicating section 12 in the upper part and the lower support section 13 in the lower part, the decompression hole 111 is formed in the upper communicating section 12, and the lower support section 13 can be installed separately to increase the structural strength of the lower support section 13, thereby increasing the structural strength of the weld between the frame 24 and the bottom plate 18. For example, the lower support section 13 can be installed as a main body structure, or the lower support section 13 can be installed so as to form a cavity structure with a reinforcing structure.

[0057] Specifically, in order to reduce the weight of the entire frame 24 and the entire battery pack, as well as to facilitate welding between the lower support portion 13 and the bottom plate 18, a second cavity 131 is formed in the lower support portion 13 and a second reinforcing plate 132 is installed in the lower support portion 13, so that a cavity is formed in the lower support portion 13, thereby reducing the weight of the entire frame 24, and installing the second reinforcing plate 132 in the second cavity 131 ensures the structural strength of the frame 24 when it is welded to the bottom plate 18.

[0058] Here, since the lower end of the lower support part 13 needs to be welded to the bottom plate 18, in order to ensure the structural strength of the lower support part 13 when it is welded, the second reinforcing plate 132 is extended in the height direction of the frame 24, that is, the second reinforcing plate 132 is connected to the lower end of the lower support part 13, thus achieving the characteristic of increasing the structural strength of the frame 24.

[0059] In addition, in order to increase the structural strength of the upper communicating portion 12, a reinforcing plate may be provided in the upper communicating portion 12.

[0060] Specifically, referring to Figure 11, when sealing the first cavity 121 of the upper communicating portion 12, one second sealing plate 14 and one third sealing plate 15 are welded to opposite ends of the first cavity 121, and the first cavity 121 is sealed by the two sealing plates.

[0061] Here, the second closing plate 14 is installed at the position where the water inlet and outlet on the corresponding frame 24 are to be installed, which not only makes it easy to open the water inlet and outlet, but also makes the welding operation of the second closing plate 14 easier and provides a larger operating space. The third closing plate 15 is installed between the separated first sub-frame 16 and second sub-frame 17, so that the first sub-frame 16 and second sub-frame 17 are welded together after the welding of the first sub-frame 16 and the third closing plate 15 is completed. In this way, a larger operating space is provided when welding the third closing plate 15, making the welding operation of the third closing plate 15 easier.

[0062] In another embodiment, the present disclosure further provides a battery package, which includes a battery pack and the battery mounting case 100, the battery mounting case 100 being installed to mount the battery pack. [Explanation of symbols]

[0063] 100: Battery mounting box 10: Housing 101: First reinforcing rib 102: Second reinforcing rib 11: Containment space 111: Decompression hole 12: Upper communication part 121: First cavity 13: Lower support part 131: Second cavity 132: Second reinforcing plate 14: Second blocking plate 15: Third blocking board 16: First subframe 17: Second subframe 18: Bottom plate 181: Third reinforcing rib 19: Partition board 20:Beam body 21: Decompression passage 22: Vertical beam 221: Pressure reducing communication port 222: 1st support plate 223: First reinforcement plate 23: Horizontal beam 231: 1st communication port 232:Second support plate 24: Frame 30: Relay structure 31: 1st communication part 311:Second communication port 312: Lower cavity 32:Second communication part 321: 3rd communication port 322: Upper cavity 323: Stepped notch 324: First blocking plate 33: First reinforcing plate 34: Relay structure decompression cavity 40:Support structure 41: Tray 411: Positioning hole 42: Support rib 43: Decompression cavity 431: Exhaust passage 50: Hook part 501: Through hole 60: Upper lid

Claims

1. A battery mounting case (100), A housing (10) and a support structure (40), A decompression hole (111) is provided in the housing (10), The support structure (40) is installed within the housing (10) to support the battery pack; The support structure (40) includes a tray (41) and at least one support rib (42) located on the bottom of the tray (41); The support rib (42) is supported between the tray (41) and the bottom plate (18) of the housing (10), thereby forming a vacuum cavity (43) between the tray (41) and the bottom plate (18); The decompression cavity (43) and the decompression hole (111) are in communication with each other, so that gas can be discharged through the decompression hole (111). A battery mounting case characterized by:

2. The decompression cavity (43) includes an exhaust passage (431), The housing (10) includes a frame (24) and at least one longitudinal beam (22) installed within the frame (24); the support structure (40) includes a plurality of the support ribs (42); One exhaust passage (431) is formed between two adjacent support ribs (42), The exhaust passage (431) is installed toward the longitudinal beam (22), A decompression communication port (221) that communicates the exhaust passage (431) with the decompression hole (111) is installed in the vertical beam (22).

2. The battery housing according to claim 1.

3. The pressure reduction communication port (221) is installed at one end of the longitudinal beam (22), The support rib (42) is installed inclined toward the pressure reduction communication port (221).

3. The battery housing according to claim 2.

4. The housing (10) includes two longitudinal beams (22) disposed opposite to each other, The support rib (42) has a V-shape, and an opening of the support rib (42) faces the pressure reduction communication port (221).

4. The battery housing according to claim 3.

5. A first support plate (222) is installed on the longitudinal beam (22), The first support plate (222) is installed to support the tray (41).

3. The battery housing according to claim 2.

6. A gap is formed between the vertical beam (22) and the first support plate (222) and the bottom plate (18), The pressure reduction communication port (221) is installed on the bottom wall of the longitudinal beam (22) facing the bottom plate (18).

6. The battery housing according to claim 5.

7. At least one reinforcing plate (223) is installed in the longitudinal beam (22) along the longitudinal direction of the longitudinal beam (22).

3. The battery housing according to claim 2.

8. The longitudinal beam (22) and the frame (24) are integrally molded.

3. The battery housing according to claim 2.

9. The housing (10) further includes a cross beam (23), The longitudinal beams (22), the horizontal beams (23), and the housing (10) are sequentially connected to each other, A second support plate (232) is installed on the cross beam (23), The second support plate (232) and the first support plate (222) are installed to jointly support the tray (41).

6. The battery housing according to claim 5.

10. The frame (24) has a hollow structure, The hollow structure is provided with at least one first reinforcing rib (101) arranged along a first direction and at least one second reinforcing rib (102) arranged along a second direction; The second reinforcing rib (102) is connected between the bottom wall of the housing (10) and one of the first reinforcing ribs (101); The first direction and the second direction are perpendicular to each other.

10. The battery housing according to claim 2, wherein the battery housing is made of a material that is not oxidized.

11. A third reinforcing rib (181) is provided on the bottom plate (18), The third reinforcing rib (181) is installed to support the support rib (42).

10. The battery housing according to claim 1, wherein the battery housing is a housing having a plurality of openings.

12. The battery mounting housing (100) further includes a plurality of hook portions (50), The plurality of hook portions (50) are installed on the outer wall of the housing (10) at intervals from each other.

10. The battery housing according to claim 1, wherein the battery housing is a housing having a plurality of openings.

13. The hook portion (50) is formed by extrusion molding and is connected to the housing (10) by welding.

13. The battery housing according to claim 12.

14. At least one through hole (501) is opened in the hook portion (50).

13. The battery housing according to claim 12.

15. The battery mounting case (100) further includes a beam body (20) and a relay structure (30); A decompression passage (21) is formed in the beam body (20), and the decompression cavity (43) and the decompression passage (21) are in communication with each other; Both ends of the relay structure (30) are connected between the pressure reduction passage (21) and the pressure reduction hole (111), and along the height direction of the housing (10), the height at which the relay structure (30) is connected to one end of the pressure reduction hole (111) is higher than the height at which the relay structure (30) is connected to the other end of the pressure reduction passage (21).

15. The battery housing according to claim 1, wherein the battery housing is made of a material that is not oxidized.

16. The beam body (20) includes a longitudinal beam (22) and a transverse beam (23), The pressure reducing passage (21) is installed in both the longitudinal beam (22) and the transverse beam (23), The pressure reducing passages (21) corresponding to the longitudinal beams (22) and the transverse beams (23) are sequentially connected to each other, A decompression communication port (221) communicating with the decompression cavity (43) is installed in the vertical beam (22), The relay structure (30) is connected between the decompression passage (21) of the cross beam (23) and the decompression hole (111).

16. The battery housing according to claim 15.

17. The relay structure (30) extends along the longitudinal direction of the longitudinal beam (22), The relay structure (30) is provided with a second communication port (311) and a third communication port (321) that are in communication with each other, The opening height of the third communication port (321) is higher than that of the second communication port (311), The second communication port (311) is connected to the pressure reduction passage (21) of the cross beam (23), The third communication port (321) is connected to the decompression hole (111).

17. The battery housing according to claim 16.

18. A relay structure decompression cavity (34) is formed within the relay structure (30), The relay structure decompression cavity (34) is connected to the decompression hole (111) and the decompression passage (21) of the cross beam (23), respectively.

18. The battery housing according to claim 17.

19. The relay structure (30) has a first reinforcing plate (33) installed in the relay structure decompression cavity (34); Along the height direction of the housing (10), the first reinforcing plate (33) divides the relay structure decompression cavity (34) into an upper cavity (322) and a lower cavity (312) that communicate with each other vertically, The upper cavity (322) includes the third communication port (321), and the lower cavity (312) includes the second communication port (311).

20. The battery housing according to claim 18.

20. There is a gap between the first reinforcing plate (33) and the housing (10) so that the upper cavity (322) and the lower cavity (312) are in communication with each other.

20. The battery housing according to claim 19.

21. The first reinforcing plate (33) and the relay structure (30) are integrally molded.

20. The battery housing according to claim 19.

22. The relay structure (30) has a stepped notch (323) formed on the side facing the cross beam (23).

22. The battery housing according to claim 16, wherein the battery housing is made of a material that is not oxidized.

23. The battery mounting case (100) further includes a partition plate (19), The interior of the housing (10) is divided into an upper communication section (12) and a lower support section (13) by the partition plate (19), A first cavity (121) communicating with the decompression hole (111) is provided in the upper communication portion (12), The lower support (13) is installed to be connected to the bottom plate (18).

22. The battery housing according to claim 15, wherein the battery housing is made of a material that is not oxidized.

24. A second cavity (131) is formed in the lower support portion (13), A second reinforcing plate (132) is installed in the second cavity (131).

24. The battery housing according to claim 23.

25. The second reinforcing plate (132) extends in the height direction of the housing (10).

25. The battery housing according to claim 24.

26. A battery package comprising: A battery pack and a battery mounting housing (100) according to any one of claims 1 to 25, The support structure (40) of the battery mounting housing (100) is installed to support the battery pack. A battery package characterized by:

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