Battery box and battery pack

Abstract

The application provides a battery box and a battery pack. The battery box comprises a box body, the box body comprising a lower box body and an upper box cover, the upper box cover being combined with the lower box body to form a containing cavity, the containing cavity being used for arranging a battery module; a mounting frame, the mounting frame being mounted in the box body, the mounting frame comprising a support connected to the upper box cover, a plurality of support columns, one end of the support column being connected to the lower box body and the other end being connected to the support, and a plurality of connectors, the plurality of connectors being mounted on the support, at least part of the connectors being located on the side of the support facing the upper box cover and being arranged to pass through an opening provided at the top of the upper box cover. In the battery box provided by the application, the support is connected to the upper box cover and the plurality of support columns are connected to the lower box body, so that the mounting frame is connected to the upper box cover and the lower box body at the same time, and thus the connectors are stably and firmly mounted on the box body through the mounting frame.

Description

Technical Field

[0001] This application belongs to the field of battery pack technology, specifically relating to a battery housing and a battery pack. Background Technology

[0002] In recent years, people have increasingly focused on the research and development of new energy sources. Among them, electricity, as a new energy source, has been widely used, especially in the automotive industry. New energy vehicles powered by electricity all use battery packs as their power source. Due to requirements such as safety and sealing, battery modules are generally installed in battery boxes. The battery box has connectors that are electrically connected to the vehicle-side connectors to achieve power transmission. In related technologies, the connectors are directly mounted on the battery box. However, due to the limitations of the battery box's own structural strength and rigidity, the connection stability between the connectors and the battery box is relatively poor. Utility Model Content

[0003] This application provides a battery housing and a battery pack, including but not limited to solving the problem of poor connection stability between the connector and the housing.

[0004] The technical solution adopted in the embodiments of this application is: In a first aspect, this application provides a battery housing, comprising: The housing includes a lower housing and an upper housing cover, the upper housing cover being closed onto the lower housing to form a receiving cavity, the receiving cavity being used to house the battery module; Mounting bracket, which is installed inside the housing, includes: A bracket, which is connected to the upper box cover; Multiple support columns, one end of which is connected to the lower housing and the other end of which is connected to the bracket; and Multiple connectors are mounted on the bracket, with at least a portion of each connector located on the side of the bracket facing the upper cover and extending through an opening at the top of the upper cover.

[0005] In some embodiments, the support column includes an inner column and an insulating sleeve, one end of the inner column is connected to the lower housing, and the other end of the inner column is connected to the bracket, and the insulating sleeve covers the outer periphery of the inner column.

[0006] In some embodiments, the lower housing includes a base plate, side beams, and expansion beams. The side beams and expansion beams are located on the same side of the base plate and are spaced apart from each other to form an electrical compartment and a battery compartment separated by the expansion beams. The battery compartment is used to house the battery module. A portion of the support columns are connected to the side beams, and another portion of the support columns are connected to the expansion beams. The height of the support columns connected to the side beams is greater than the height of the support columns connected to the expansion beams.

[0007] In some embodiments, the side beam is provided with a boss protruding toward the expansion beam, and the boss is provided with a preset threaded hole for installing the support column.

[0008] In some embodiments, the mounting bracket further includes a sealing ring disposed between the bracket and the upper cover, and the sealing ring surrounds each of the connectors.

[0009] In some embodiments, the bracket has a groove on the side facing the upper cover that matches the shape of the sealing ring, and the sealing ring is disposed in the groove.

[0010] In some embodiments, the inner column is detachably connected to the bracket; and / or, the inner column is detachably connected to the housing.

[0011] In some embodiments, the bracket is a cast aluminum component.

[0012] In some embodiments, the mounting bracket further includes a first threaded member with external threads, the bracket has a first threaded hole, and the first threaded member passes through the upper cover and is screwed into the first threaded hole by threads; And / or, the mounting bracket further includes a second threaded member with external threads, the bracket having a second threaded hole, the second threaded member passing through the connector and being screwed into the second threaded hole by the threads; And / or, the mounting bracket further includes a third threaded component with external threads, the bracket has a first connecting hole, the support column includes an inner column, the inner column has a second connecting hole, the second connecting hole penetrates the inner column along the length direction of the inner column, the lower box has a preset threaded hole, and the third threaded component passes through the first connecting hole and the second connecting hole in sequence and is screwed into the preset threaded hole by threads.

[0013] Secondly, this application also provides a battery pack, including a battery module and the aforementioned battery housing, wherein the battery module is disposed within the battery housing.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: In the battery box provided in this application, a bracket is connected to the upper cover, and multiple support columns are connected to the lower box, so that the mounting bracket is connected to both the upper cover and the lower box. This allows the connectors to be stably and securely mounted on the box via the mounting bracket. Furthermore, the connectors protrude from the opening at the top of the box. Compared to mounting them on the side of the box, this avoids occupying space along the length of the lower box, thereby increasing the volumetric energy density of the battery pack. It also facilitates direct connection between the connectors and the vehicle-side components, eliminating the need for wiring harnesses. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a battery pack provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the battery housing provided in an embodiment of this application.

[0018] Figure 3 for Figure 2 The diagram shows a partial cross-section of the battery casing.

[0019] Figure 4 for Figure 2 The diagram shown is an exploded view of the battery casing.

[0020] Figure 5 This is a diagram showing the installation relationship between the mounting bracket and connectors provided in the embodiments of this application.

[0021] Figure 6 This is an exploded view of the mounting bracket and connector provided in the embodiments of this application.

[0022] Figure 7 This is a schematic diagram of a support column provided in an embodiment of this application.

[0023] Figure 8 for Figure 5 The right view of the structure shown.

[0024] Figure 9 A schematic diagram of the inner column provided in an embodiment of this application.

[0025] Figure 10 This is a schematic diagram of the lower housing provided in an embodiment of this application.

[0026] Figure 11This is a diagram showing the installation relationship between the lower housing and the mounting bracket provided in an embodiment of this application.

[0027] Figure 12 This is a diagram showing the installation relationship between the mounting bracket, side beam, and expansion beam provided in the embodiments of this application.

[0028] Figure 13 This is a diagram showing the installation relationship between the bracket and the sealing ring provided in an embodiment of this application.

[0029] Figure 14 for Figure 2 The battery compartment shown is a top view.

[0030] Figure 15 for Figure 14 The battery box shown is a cross-sectional view along line AA.

[0031] Figure 16 for Figure 14 The battery box shown is a cross-sectional view along line BB.

[0032] Figure 17 This is a cross-sectional view of the installation relationship between the bracket, support column, and side beam of the box body provided in the embodiments of this application.

[0033] Figure 18 A schematic diagram of the electrical equipment provided in the embodiments of this application.

[0034] Explanation of key figure labels: Electrical equipment 100; battery pack 101; equipment body 102; battery box 103; battery module 104; box 11; lower box 111; base plate 1111; side beam 1112; boss 1112a; beam 1112b; expansion beam 1113; upper cover 112; mounting bracket 12; bracket 121; support column 122; inner column 1221; first section 1221a; middle section 1221b; second section 1221c; insulating sleeve 1222; sealing ring 123; first threaded component 124; second threaded component 125; third threaded component 126; connector 13; receiving cavity X1; electrical compartment X2; battery compartment X3; groove X4; first threaded hole X5; second threaded hole X6; first connecting hole X7; second connecting hole X8; preset threaded hole X9; mounting hole X10; opening X11. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0040] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0041] Please refer to Figure 1 This application provides a battery pack 101, which includes a battery module 104 and a battery housing 103 as described in any of the following embodiments, wherein the battery module 104 is disposed within the battery housing 103.

[0042] The battery pack 101 can also be referred to as an energy storage device, power supply device, etc., and can be applied, but is not limited to, the fields of transportation vehicles, digital products, home appliances, processing equipment, health monitoring equipment, electric toys, energy storage systems, etc. The following embodiments of this application are exemplified by vehicles used in the field of transportation vehicles.

[0043] It should be noted that the number of battery modules 104 installed in a battery housing 103 can be, but is not limited to, 1, 3, 4, 5, 7, 8, etc.

[0044] The battery housing 103 in the battery pack 101 is described in detail below with reference to the accompanying drawings.

[0045] Please refer to Figures 2 to 5 This application provides a battery housing 103, which includes: a housing 11, a mounting bracket 12, and a plurality of connectors 13. The housing 11 includes a lower housing 111 and an upper housing cover 112, the upper housing cover 112 covering the lower housing 111 to form a receiving cavity X1 (see...). Figure 3 The receiving cavity X1 is used to house the battery module 104. The mounting bracket 12 is installed inside the housing 11. The mounting bracket 12 includes: a bracket 121 and multiple support columns 122 (see...). Figure 5 The bracket 121 is connected to the upper cover 112. One end of the support column 122 is connected to the lower housing 111, and the other end is connected to the bracket 121. A plurality of connectors 13 are installed on the side of the bracket 121 facing the upper cover 112, and from an opening X11 provided on the upper cover 112 (see...). Figure 4 It emerged from the middle.

[0046] Specifically, the housing 11 serves to provide support and protection for components such as the battery module 104. The housing 11 includes an upper cover 112 and a lower housing 111, which can be closed together to define a space, namely a receiving cavity X1, for installing the battery module 104. Multiple battery modules 104 can be installed within the receiving cavity X1. The number of battery modules 104 can be, but is not limited to, 8, 10, 11, 32, or 51, etc., and is determined according to specific requirements.

[0047] The upper cover 112 and the lower body 111 can be either detachable or non-detachable. Detachable connections can be achieved, but are not limited to, snap-fit ​​connections or bolt connections, facilitating subsequent maintenance and component replacement. Non-detachable connections can be achieved, but are not limited to, welding or bonding, improving the overall strength of the body 11 and preventing separation of the lower body 111 and upper cover 112 due to vibration, impact, or other factors.

[0048] The upper cover 112 and the lower body 111 can be made of the same or different materials. The materials can be, but are not limited to, aluminum alloy, steel, carbon fiber, glass fiber, engineering plastics, etc.

[0049] The mounting bracket 12 is integrally housed within the receiving cavity X1 of the housing 11, and is used to mount multiple connectors 13. The connectors 13 mounted on the mounting bracket 12 are used to connect to the vehicle-side connectors, thereby establishing an electrical connection between the battery pack 101 and the vehicle. The number of connectors 13 can be, but is not limited to, 2, 3, 4, or 5. The multiple connectors 13 can include various different types. For example, if there are 3 connectors 13, 2 of them may be high-voltage connectors and 1 may be a low-voltage connector.

[0050] Mounting bracket 12 includes a bracket 121 and a plurality of support columns 122 connected to the bracket 121. The bracket 121 is used to mount the connector 13. The support columns 122 are used to support the bracket 121 to increase the rigidity of the bracket 121 and prevent excessive deformation during the insertion and connection of the connector 13 and the vehicle-end plug.

[0051] Please refer to Figure 6 The bracket 121 can be provided with multiple mounting holes X10, and multiple connectors 13 are installed one-to-one in the multiple mounting holes X10. That is, the number of mounting holes X10 and connectors 13 is the same, and one connector 13 is installed in one mounting hole X10. The assembled connectors 13 are at least partially located on the side of the bracket 121 facing the upper cover 112 (i.e., part of the connectors 13 are on the upper side of the bracket 121), so as to facilitate connection to the vehicle-side connectors. In addition, at least some of the connectors 13 can also be located on the side of the bracket 121 away from the upper cover 112 (i.e., part of the connectors 13 are on the lower side of the bracket 121), so as to facilitate electrical connection to other electrical control components (such as BDU, sensors, etc.) in the battery pack 101.

[0052] The bracket 121 can be a plate-like structure, and its general shape can be, but is not limited to, a rectangle, square, ellipse, pentagon, etc. For example, the bracket 121 is a plate-like structure with a certain length, and multiple spaced mounting holes X10 for mounting the connector 13 are provided along the length of the bracket 121. Figure 5 , Figure 6 As shown. The bracket 121 is attached to the inner wall of the upper cover 112 and connected to the upper cover 112. The connection between the two can be a non-detachable connection (such as welding or bonding) or a detachable connection (such as bolt connection). The bracket 121 can be attached to the inner wall of the upper cover 112. By attaching it, the contact area can be increased, thereby improving the connection stability.

[0053] The support column 122 is generally columnar, and this columnar shape can be, but is not limited to, a cylinder, a triangular prism, a square prism, etc. The support column 122 is connected to the bracket 121 and the lower housing 111 at opposite ends in the axial direction, respectively. With this configuration, during the process of the connector 13 and the vehicle-end plug-in being inserted into each other, after the connector 13 transmits the force to the bracket 121, the bracket 121 will also transmit the force to the lower housing 111 through the support column 122. In other words, the lower housing 111 provides support for the bracket 121 through the support column 122.

[0054] In related technologies, the connector 13 is located on the side of the lower housing 111. This arrangement will cause two problems. First, the connector 13 will occupy the space in the length direction of the lower housing 111, which will reduce the installation space of the battery module 104 and reduce the volumetric energy density of the battery pack 101. Second, the connector 13 located on the side requires the use of additional wiring harnesses to connect to the vehicle-end connectors, which increases the number of assembly steps and production costs. In addition, additional wiring harnesses need to reserve a channel for arrangement, occupying the space around the battery housing 103 or the vehicle chassis.

[0055] In this application, the top of the upper cover 112 is also provided with an opening X11, that is, the orientation of the opening X11 is the direction from which the lower housing 111 faces the upper cover 112. The bracket 121 is provided corresponding to the opening X11, and the connector 13 mounted on the bracket 121 passes through the opening X11, thus being exposed to the outside, so as to facilitate the connection of the connector 13 with the vehicle-end plug-in. It can be understood that since the opening X11 is located at the top of the upper cover 112, the connector 13 is exposed from the top of the housing 11, which facilitates the direct connection of the connector 13 with the vehicle-end plug-in, avoiding the use of a wiring harness to connect the connector 13 and the vehicle-end plug-in. In addition, the connector 13 is exposed from the opening X11 at the top of the upper cover 112, avoiding occupying the space in the length direction of the lower housing 111, so that the lower housing 111 can accommodate more battery modules 104 or larger volume battery modules 104, thereby increasing the volumetric energy density of the battery pack 101.

[0056] It should be noted that, in one embodiment, the number of openings X11 can be one, with all connectors 13 passing through one opening X11. In another embodiment, the number of openings X11 can also be multiple, with multiple connectors 13 corresponding one-to-one and passing through multiple openings X11. That is, the number of openings X11 is the same as the number of connectors 13, with one connector 13 passing through one opening X11. This application is only illustratively described with an example having the same number of openings X11 as the number of connectors 13.

[0057] In summary, in the battery box 103 provided in this application, the bracket 121 is connected to the upper cover 112, and multiple support columns 122 are connected to the lower box 111. This allows the mounting bracket 12 to be connected to both the upper cover 112 and the lower box 111 simultaneously, thus ensuring that the connector 13 is stably and securely mounted on the box 11 via the mounting bracket 12. Furthermore, the connector 13 protrudes from the opening X11 at the top of the box 11. Compared to placing it on the side of the box 11, this avoids occupying space along the length of the lower box 111, thereby increasing the volumetric energy density of the battery pack 101. It also facilitates direct connection between the connector 13 and the vehicle-side connectors, avoiding the need for wiring harnesses.

[0058] Please refer to Figure 7 In some embodiments, the support column 122 includes an inner column 1221 and an insulating sleeve 1222. One end of the inner column 1221 is connected to the lower housing 111, and the other end of the inner column 1221 is connected to the bracket 121, that is, the opposite ends of the inner column 1221 are respectively connected to the bracket 121 and the lower housing 111. The insulating sleeve 1222 covers the outer periphery of the inner column 1221.

[0059] Specifically, the inner column 1221 is columnar in shape, and can be, but is not limited to, a cylinder, a triangular prism, or a square prism. The inner column 1221 is made of a rigid material and serves to connect the support 121 and the lower housing 111. The material of the inner column 1221 can be, but is not limited to, metal, such as stainless steel, copper, or aluminum. Optionally, the inner column 1221 can be made of cast aluminum.

[0060] The insulating sleeve 1222 has a hollow structure and is fitted onto the outer surface of the inner cylinder 1221. The insulating sleeve 1222 is made of insulating material, which can be, but is not limited to, plastic, rubber, glass, ceramic, etc. The insulating sleeve 1222 can be formed on the outer periphery of the inner cylinder 1221 by injection molding, or it can be made independently and then fitted onto the outer periphery of the inner cylinder 1221.

[0061] Please refer to Figure 8 When the inner column 1221 is made of conductive material, if it is not wrapped with an insulating sleeve 1222, the electrical clearance between the inner column 1221 and the connector 13 is the first dimension H1; after wrapping with the insulating sleeve 1222, the electrical clearance between the inner column 1221 and the connector 13 is the second dimension H2. As can be seen from the figure, the second dimension H2 is larger than the first dimension H1. Therefore, wrapping the outer surface of the inner column 1221 with an insulating sleeve 1222 can increase the electrical clearance between the inner column 1221 and the connector 13, thereby improving electrical safety.

[0062] Please refer to Figure 9In some embodiments, the inner column 1221 includes a first segment 1221a, an intermediate segment 1221b, and a second segment 1221c. The first segment 1221a and the second segment 1221c are respectively connected to opposite ends of the intermediate segment 1221b. The radial dimensions of both the first segment 1221a and the second segment 1221c are larger than the radial dimension of the intermediate segment 1221b. The insulating sleeve 1222 covers the outer periphery of the intermediate segment 1221b. This arrangement confines the insulating sleeve 1222 between the first segment 1221a and the second segment 1221c, preventing it from detaching.

[0063] In some embodiments, the inner column 1221 and the bracket 121 are detachably connected. This detachable connection facilitates mass production and subsequent disassembly and maintenance. The detachable connection between the inner column 1221 and the bracket 121 can be, but is not limited to, threaded connections, snap-fit ​​connections, etc. For example, a hole can be drilled at the end / bottom of the inner column 1221 on the mating surface of the bracket 121. An internal thread can be cut into the inner wall of the drilled hole using a matching tap (manual or pneumatic tapping machine) (or a hole can be drilled on the mating surface of the bracket 121 and an internal thread can be cut into the inner wall). The through holes of the inner column 1221 and the bracket 121 can be completely aligned (or aligned with the through holes of the inner column 1221). A bolt can be passed through the through hole and screwed into the internal threaded hole of the inner column 1221 (or the bracket 121) to lock it in place. This method not only ensures the positional accuracy of the connection but also allows the inner column 1221 and the bracket 121 to be separated by loosening the bolt, facilitating maintenance and replacement.

[0064] In some embodiments, the inner column 1221 and the lower housing 111 are detachably connected. This detachable connection facilitates mass production and subsequent disassembly and maintenance. The detachable connection between the inner column 1221 and the lower housing 111 can be, but is not limited to, threaded connections, snap-fit ​​connections, etc. For example, a hole can be drilled at the end / bottom of the inner column 1221 on the mating surface with the bracket 121, and an internal thread can be cut on the inner wall of the hole using a matching tap (or a hole can be drilled on the mating surface of the lower housing 111 and an internal thread can be cut on the inner wall). The through holes of the inner column 1221 and the lower housing 111 can be fully aligned (or aligned with the through holes of the inner column 1221). A bolt can be passed through the through hole and screwed into the internal threaded hole of the inner column 1221 (or the lower housing 111) to lock it in place. This method not only ensures the positional accuracy of the connection but also allows the inner column 1221 and the bracket 121 to be separated by loosening the bolt, facilitating maintenance and replacement.

[0065] In some embodiments, the opposite ends of the inner column 1221 are detachably connected to the bracket 121 and the lower housing 111, respectively. This allows the support column 122 to be manufactured independently, facilitating installation and after-sales service. The detachable connection method is described above.

[0066] Please refer to Figure 10 and Figure 11 In some embodiments, the lower housing 111 includes a base plate 1111, side beams 1112, and expansion beams 1113. The side beams 1112 and the expansion beams 1113 are located on the same side of the base plate 1111 and are spaced apart from each other, forming an electrical compartment X2 and a battery compartment X3 separated by the expansion beams 1113. The battery compartment X3 is used to house the battery module 104. A portion of the support columns 122 are connected to the side beams 1112, and another portion of the support columns 122 are connected to the expansion beams 1113.

[0067] Specifically, the base plate 1111 is a plate-like structure, and its general shape can be rectangular, square, etc. The material of the base plate 1111 can be, but is not limited to, metal, plastic, etc. The interior of the base plate 1111 can have flow channels for coolant to flow through, thus cooling the battery module 104. The side beams 1112 and expansion beams 1113 are both strip-like structures, and their materials can be, but are not limited to, metal, plastic, etc. There can be multiple side beams 1112, which are respectively set at different edges of the base plate 1111 to form the frame of the lower housing 111. The multiple side beams 1112, the base plate 1111, and the upper housing cover 112 together define the receiving cavity X1 for accommodating the battery module 104. For example, the base plate 1111 is a square structure, and there are four side beams 1112, which are respectively set at the four edges of the base plate 1111.

[0068] Multiple side beams 1112 and the base plate 1111 together form a receiving space, within which an expansion beam 1113 is located. The expansion beam 1113 is spaced apart from one of the side beams 1112, dividing the receiving space into an electrical compartment X2 and a battery compartment X3. The battery compartment X3 is used to house the battery module 104, while the electrical compartment X2 is used to house other electrical control components (such as BDU, sensors, BMS, etc.). A bracket 121 is positioned directly above the electrical compartment X2, with some support columns 122 connected to the top of the side beams 1112 and others connected to the top of the expansion beam 1113. This arrangement avoids the mounting bracket 12 occupying space in the electrical compartment X2, providing more space for other electrical control components, improving space utilization, and increasing the volumetric energy density of the battery pack 101.

[0069] In one embodiment, the side beam 1112 and the expansion beam 1113 have the same height. In another embodiment, the height of the side beam 1112 is greater than the height of the expansion beam 1113. In yet another embodiment, the height of the side beam 1112 is less than the height of the expansion beam 1113. As long as the height of the side beam 1112 is sufficient to withstand lateral impacts, the height of the expansion beam 1113 effectively constrains the expansion of the battery module 104. In this application, the height of the side beam 1112 is less than the height of the expansion beam 1113 to reduce the height of the side beam 1112 and increase the height of the expansion beam 1113. The height of the expansion beam 1113 is close to the height of the individual battery cells in the battery module 104 to ensure sufficient support for the battery cells, while the height of the side beam 1112 is less than the height of the individual battery cells to achieve a protective function. Here, height refers to the dimension of the lower housing 111 towards the upper housing cover 112.

[0070] Please refer to Figure 12 In some embodiments, the height of the side beam 1112 is less than the height of the expansion beam 1113, and the height of the support column 122 connecting the side beam 1112 is greater than the height of the support column 122 connecting the expansion beam 1113. This arrangement, with support columns 122 of different heights, ensures that the bracket 121 is parallel to the base plate 1111, preventing the connector 13 from tilting. The appropriate height difference also facilitates airflow, thereby aiding in heat dissipation for the connector 13, and allows the bracket 121 to avoid obstructing the space of the electrical compartment X2, thus not interfering with the installation of other electrical control components. Here, height refers to the dimension of the lower housing 111 towards the upper housing cover 112.

[0071] It should be noted that the number of support columns 122 connected to the edge beam 1112 can be the same as or different from the number of support columns 122 connected to the expansion beam 1113, and this is not limited here. For example, there may be 3 support columns 122 connected to the edge beam 1112 and 3 support columns 122 connected to the expansion beam 1113. Alternatively, there may be 2 support columns 122 connected to the edge beam 1112 and 3 support columns 122 connected to the expansion beam 1113.

[0072] Please refer to Figure 10 In some embodiments, the side beam 1112 is provided with a boss 1112a protruding toward the expansion beam 1113, and the boss 1112a is provided with a preset threaded hole X9, which is used to install the support column 122.

[0073] Specifically, the side beam 1112 includes a beam body 1112b and a boss 1112a. The beam body 1112b is connected to the base plate 1111, and the boss 1112a protrudes from the side of the beam body 1112b facing the expansion beam 1113. The boss 1112a and the beam body 1112b can be an integral structure or a separate structure. The top of the boss 1112a and the beam body 1112b can be flush or not flush. The boss 1112a is provided with multiple preset threaded holes X9, which are arranged at intervals. These preset threaded holes X9 are used to connect the support column 122 and the side beam 1112. When the upper cover 112 is closed on the lower cover 111, the upper cover 112 is connected to the beam body 1112b. In this embodiment, by providing the boss 1112a, the position on the beam 1112b used for connecting the upper box cover 112 can be avoided, thus ensuring that the upper box cover 112 and the lower box 111 have better connection stability.

[0074] Please refer to Figure 13 In some embodiments, the mounting bracket 12 further includes a sealing ring 123, which is disposed between the bracket 121 and the upper cover 112, such that opposite sides of the sealing ring 123 abut against the bracket 121 and the upper cover 112 respectively. The sealing ring 123 surrounds each connector 13. The material of the sealing ring 123 may be, but is not limited to, fluororubber, silicone rubber, polytetrafluoroethylene, polyurethane, etc.

[0075] Understandably, to facilitate the insertion of connector 13, the size of opening X11 can be larger than the size of connector 13. However, this results in a gap between the sidewall of opening X11 and the sidewall of connector 13 (defined here as the first gap). Furthermore, since the bracket 121 and the upper cover 112 are in hard contact, a small gap inevitably exists between them (defined here as the second gap). In some cases, external liquids (such as water) may seep into the battery case 103 through the first gap and then the second gap, potentially causing short circuits or other problems.

[0076] In this embodiment, a sealing ring 123 is provided between the bracket 121 and the upper cover 112, and the sealing ring 123 also surrounds the periphery of each connector 13. This arrangement creates a soft contact between the upper cover 112, the sealing ring 123, and the bracket 121. Specifically, the sealing ring 123 can isolate the second gap between the bracket 121 and the upper cover 112. Even if external liquid enters through the first gap, it is difficult for it to further penetrate into the battery case 103 through the sealing ring 123. Therefore, the sealing ring 123 can ensure the normal operation of the battery pack 101.

[0077] Please refer to Figure 13In some embodiments, the bracket 121 has a groove X4 on the side facing the upper cover 112 that matches the shape of the sealing ring 123, and the sealing ring 123 is disposed in the groove X4.

[0078] Understandably, by placing the sealing ring 123 in the groove X4, the sealing ring 123 can be prevented from deviating from its correct position during the connection process between the bracket 121 and the upper cover 112. Therefore, the groove X4 serves to position the sealing ring 123. Furthermore, since the bracket 121 and the upper cover 112 jointly compress the sealing ring 123, the sealing ring 123 will deform laterally under the compression. Thus, the sealing ring 123 can not only abut against the bottom wall of the groove X4 but also against the two side walls of the groove X4, thereby increasing the contact area between the sealing ring 123 and the bracket 121, and thus improving the sealing effect.

[0079] In some embodiments, preferably, the bracket 121 is a cast aluminum component. Casting the bracket 121 with aluminum reduces weight, contributing to the lightweight design of the battery pack 101. Furthermore, the casting process avoids stress concentration caused by welding, resulting in stronger overall torsional and compressive strength. Aluminum alloy has excellent corrosion resistance, eliminating the need for additional anti-rust coatings (such as galvanizing or painting), and can withstand the humid and temperature-sensitive environment inside the battery pack 101, extending the service life of the bracket 121. Simultaneously, casting allows for precise molding of complex structures, directly pre-drilling mounting holes X10 for the connector 13 (eliminating the need for subsequent secondary drilling and tapping when using a tapped connection method), improving installation accuracy. Of course, in other embodiments, the bracket 121 can also be made of other materials, such as steel or copper.

[0080] Please refer to Figure 14 and Figure 15 In some embodiments, the mounting bracket 12 further includes a first threaded component 124 with external threads, which can be a bolt, screw, etc. The support 121 has a first threaded hole X5 with internal threads, which can be a through hole or a blind hole. The first threaded component 124 passes through the upper cover 112 and is screwed into the first threaded hole X5. This forms a secure connection between the support 121 and the upper cover 112. The number of first threaded components 124 connecting the support 121 and the upper cover 112 can be, but is not limited to, 1, 2, 3, 4, 5, 6, 7, 8, etc. When there are multiple first threaded components 124, they are evenly arranged.

[0081] Please refer to Figure 14 and Figure 16In some embodiments, the mounting bracket 12 further includes a second threaded component 125 with external threads, which can be a bolt, screw, etc. The bracket 121 has a second threaded hole X6 with internal threads, which can be a through hole or a blind hole. The second threaded component 125 passes through the connector 13 and is screwed into the second threaded hole X6. This forms a secure connection between the bracket 121 and the connector 13. The number of second threaded components 125 connecting the bracket 121 and the connector 13 can be, but is not limited to, 1, 2, 3, 4, 5, 6, 7, 8, etc. When there are multiple second threaded components 125, they are evenly arranged.

[0082] Please refer to Figure 17 In some embodiments, the mounting bracket 12 further includes a third threaded component 126 with external threads, which can be a bolt, screw, etc. The support 121 has a first connecting hole X7, which may or may not be a threaded hole. The support column 122 includes an inner column 1221, which has a second connecting hole X8, which may or may not be a threaded hole. The second connecting hole X8 penetrates the inner column 1221 along its length. The lower housing 111 has a preset threaded hole X9 with internal threads. The preset threaded hole X9 can be a through hole or a blind hole. The third threaded component 126 passes sequentially through the first connecting hole X7 and the second connecting hole X8 and is screwed into the preset threaded hole X9. Thus, the support 121, the support column 122, and the lower housing 111 are firmly connected. The number of third threaded parts 126 is the same as the number of support columns 122, and the specific number can be, but is not limited to, 1, 2, 3, 4, 5, 6, 7, 8, etc. The first connecting hole X7 can be a countersunk hole, so that the head of the third threaded part 126 is recessed into the first connecting hole X7, thereby avoiding interference with the upper cover 112 and improving the fit between the bracket 121 and the upper cover 112.

[0083] Understandably, the above-mentioned components are connected and fixed by setting threaded holes and threaded parts, which can reduce the number of rivet nuts used and reduce manufacturing costs.

[0084] Please refer to Figure 18The battery pack 101 is applied to the electrical device 100 to power the device body 102 of the electrical device 100. The electrical device 100 may be, but is not limited to, vehicles (such as vehicles, cruise ships, airplanes, etc.), digital products (such as computers, audio equipment, digital cameras, etc.), home appliances (such as vacuum cleaners, robot vacuum cleaners, washing machines, etc.), processing equipment (such as cutting machines, electric drills, angle grinders, etc.), health monitoring equipment (such as portable electrocardiographs, blood glucose meters, etc.), electric toys (such as remote control cars, drones, remote control boats, etc.), etc.

[0085] In the embodiments of this application, the electrical equipment 100 is only illustrated by way of a vehicle, which may be, but is not limited to, cars, buses, trucks, SUVs, electric bicycles, etc. For a vehicle, its equipment body 102 may include a frame, various electrical loads (such as power systems, lighting systems, etc.).

[0086] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A battery housing, characterized in that, The battery housing (103) includes: The housing (11) includes a lower housing (111) and an upper housing cover (112), the upper housing cover (112) covering the lower housing (111) to form a receiving cavity (X1), the receiving cavity (X1) being used to house the battery module (104). Mounting bracket (12), which is installed inside the housing (11), includes: A bracket (121) is connected to the upper cover (112). Multiple support columns (122), one end of each support column (122) being connected to the lower housing (111) and the other end being connected to the bracket (121); and Multiple connectors (13) are mounted on the bracket (121), and at least a portion of the connectors (13) are located on the side of the bracket (121) facing the upper cover (112) and protrude from the opening (X11) provided at the top of the upper cover (112).

2. The battery housing as described in claim 1, characterized in that, The support column (122) includes an inner column (1221) and an insulating sleeve (1222). One end of the inner column (1221) is connected to the lower housing (111), and the other end of the inner column (1221) is connected to the bracket (121). The insulating sleeve (1222) covers the outer periphery of the inner column (1221).

3. The battery housing as described in claim 1, characterized in that, The lower housing (111) includes a base plate (1111), side beams (1112), and expansion beams (1113). The side beams (1112) and the expansion beams (1113) are located on the same side of the base plate (1111) and are spaced apart from each other, so as to form an electrical compartment (X2) and a battery compartment (X3) separated by the expansion beams (1113). The battery compartment (X3) is used to house the battery module (104). A portion of the support columns (122) are connected to the side beams (1112), and another portion of the support columns (122) are connected to the expansion beams (1113). The height of the support column (122) connecting the side beam (1112) is greater than the height of the support column (122) connecting the expansion beam (1113).

4. The battery housing as described in claim 3, characterized in that, The side beam (1112) is provided with a boss (1112a) protruding toward the expansion beam (1113), and a preset threaded hole (X9) is provided on the boss (1112a), which is used to install the support column (122).

5. The battery housing as described in claim 1, characterized in that, The mounting bracket (12) also includes a sealing ring (123), which is located between the bracket (121) and the upper cover (112), and the sealing ring (123) surrounds each of the connectors (13).

6. The battery housing as described in claim 5, characterized in that, The bracket (121) has a groove (X4) on the side facing the upper cover (112) that matches the shape of the sealing ring (123), and the sealing ring (123) is located in the groove (X4).

7. The battery housing as described in claim 2, characterized in that, The inner column (1221) is detachably connected to the bracket (121); and / or, the inner column (1221) is detachably connected to the box (11).

8. The battery housing as described in any one of claims 1 to 7, characterized in that, The bracket (121) is a cast aluminum part.

9. The battery housing as described in any one of claims 1 to 7, characterized in that, The mounting bracket (12) further includes a first threaded component (124) with external threads. The bracket (121) has a first threaded hole (X5). The first threaded component (124) passes through the upper cover (112) and is screwed into the first threaded hole (X5) by threads. And / or, the mounting bracket (12) further includes a second threaded member (125) with external threads, the bracket (121) has a second threaded hole (X6), the second threaded member (125) passes through the connector (13) and is screwed into the second threaded hole (X6) by threads; And / or, the mounting bracket (12) further includes a third threaded component (126) with external threads, the bracket (121) is provided with a first connecting hole (X7), the support column (122) includes an inner column (1221), the inner column (1221) is provided with a second connecting hole (X8), the second connecting hole (X8) passes through the inner column (1221) along the length direction of the inner column (1221), the lower box (111) is provided with a preset threaded hole (X9), and the third threaded component (126) passes through the first connecting hole (X7) and the second connecting hole (X8) in sequence and is screwed into the preset threaded hole (X9) by threads.

10. A battery pack, characterized in that, The battery pack (101) includes a battery module (104) and a battery housing (103) as described in any one of claims 1 to 9, wherein the battery module (104) is disposed within the battery housing (103).

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