Bottom-mounted power battery frame hung on side of heavy truck frame

Abstract

The invention discloses a heavy truck frame side hanging and bottom power battery frame which comprises a bearing part arranged at the bottom of a truck frame and used for providing an installation foundation for a battery pack to meet the installation requirement of the battery pack. The rubber bushing is installed at the top of the bearing part, the soft connecting part is installed at the top of the bearing part, the bearing part is elastically connected with a vehicle frame through the soft connecting part, and the soft connecting part is used for buffering vibration impact between the vehicle frame and the bearing part in the vehicle running process. Vibration impact between the frame and the bearing part can be effectively absorbed when a vehicle runs, a buffer barrier is formed, the battery pack is protected against vibration damage, the bearing strip is matched with the rubber bushing and is stably connected with the fork arm through the fastener, the fork arm and the connecting strip are integrally formed and are connected with the vehicle frame through the fixing hole, the overall connecting structure is reliable, and the service life is long. And stable assembly among the flexible connecting piece, the frame and the bearing piece is ensured.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty truck battery frame technology, specifically a side-mounted and bottom-mounted power battery frame for heavy-duty trucks. Background Technology

[0002] With the increasing emphasis placed on environmental protection by the country, electric vehicles have become a development trend to replace gasoline vehicles. Trucks consume a large proportion of fuel and cause significant environmental pollution. Therefore, developing electric trucks has become an important part of solving environmental pollution problems.

[0003] Currently, the power battery frames for new energy heavy trucks are divided into two types: rear-mounted and side-mounted with bottom placement. Both types of power battery frames are generally welded structures. Due to the fixed length and width of the welded power battery frames, they can only be used with a single power battery configuration, resulting in a limited range of compatible products.

[0004] Furthermore, the connection between the power battery pack and the vehicle frame is a rigid bracket connection. When the vehicle is in motion, the vibration of the vehicle frame is directly transmitted to the battery pack, causing the internal cells and wiring of the battery pack to suffer from structural fatigue, loose contact, or even performance degradation or damage due to continuous vibration. Summary of the Invention

[0005] The purpose of this invention is to provide a side-mounted and bottom-mounted power battery frame for heavy-duty trucks, in order to solve the problems mentioned in the background art, which are limited by the fixed length and width of the welded power battery frame, which only adapts to a single power battery configuration and a single product category. At the same time, the connection between the power battery frame and the frame is a rigid bracket connection. When the vehicle is in motion, the vibration of the frame is directly transmitted to the battery pack, causing the cells and circuits inside the battery pack to suffer from structural fatigue, loose contact, or even performance degradation or damage due to continuous vibration.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A side-mounted and bottom-mounted power battery frame for heavy-duty trucks includes a carrier component located at the bottom of the vehicle frame to provide a mounting base for the battery pack and accommodate its installation requirements; a flexible connector mounted on top of the carrier component, which elastically connects the carrier component to the vehicle frame and buffers vibrations and impacts between the frame and the carrier component during vehicle operation; two sets of mounting members symmetrically arranged on both sides of the carrier component along its width to support the battery pack and provide lateral mounting support; a limiting member installed inside the carrier component, forming a limiting space adapted to the shape of the battery pack for circumferential limiting of the battery pack placed within the carrier component; and two sets of support members corresponding to the two sets of mounting members, providing bottom support and vertical limiting for the battery pack mounted inside.

[0008] As a preferred embodiment of the present invention, the carrier includes a plurality of connecting beams for carrying the battery pack disposed below the vehicle frame. The plurality of connecting beams are spaced apart along the length direction of the vehicle frame. Each set of connecting beams is provided with a limiting connector at the top for connecting a limiting component, and each set of connecting beams is provided with a fixing connector at both ends for connecting a corresponding side mounting component.

[0009] Each set of connecting beams has an integrally formed support on both sides of the top. Each set of supports has four sets of first connecting holes on the top. The four sets of first connecting holes on the top of the same support are arranged in a rectangle. The tops of the two sets of supports in the same position are provided with first support members for supporting the battery pack.

[0010] The sides of each set of connecting beams are hollowed out.

[0011] As a preferred embodiment of the present invention, the flexible connector includes rubber bushings respectively embedded in the upper surface of each set of supports, a bearing strip is inserted into the inner cavity of each set of rubber bushings, the two ends of each set of bearing strips extend to the outer side of the corresponding side rubber bushing, a first connecting hole is opened at the top of each end of each set of bearing strips, and a fixing member for connecting to the corresponding side surface of the vehicle frame is provided at the top of each set of bearing strips.

[0012] The fastener includes fork arms disposed at the top of both ends of each set of support bars. Each set of fork arms has a second connecting hole at its bottom. The first connecting hole is connected to the corresponding second connecting hole by fasteners, thereby connecting the two ends of the support bar to the corresponding side fork arms. A connecting strip is integrally formed between the upper parts of the two sets of fork arms at the same position. The surfaces of the fork arms and the connecting strip at the same position are provided with fixing holes for connecting to the vehicle frame.

[0013] As a preferred embodiment of the present invention, the mounting component includes connecting seats respectively disposed on the outer side of each set of supports, and each set of connecting seats has an outwardly extending cantilever beam fixedly connected to the bottom of the outer side. Each set of cantilever beams has a support connecting member for connecting the support member at the top. Each set of cantilever beams has a support seat integrally formed on the top of the outer side in the form of a vertical plate. The top of the support seat and the connecting seat on the same side are each provided with a second support member for carrying the battery pack.

[0014] The connecting seat is plate-shaped and has a rectangular weight-reducing hollow window. The side of the cantilever beam is hollow. The side of the support seat has multiple sets of long, waist-shaped holes extending vertically.

[0015] As a preferred embodiment of the present invention, the limiting member includes a first supporting angle steel disposed on the top of both sides of multiple sets of connecting beams. The two ends of the two sets of first supporting angle steels are respectively connected together by bottom angle steel to form a rectangle. Multiple sets of vertically arranged support bars are connected to the outer sides of the two sets of first supporting angle steels. A set of second supporting angle steels is connected to the top of the multiple sets of support bars on the same side. The two ends of the two sets of second supporting angle steels are respectively connected together by transverse angle steels.

[0016] As a preferred embodiment of the present invention, the support member includes six sets of side support angle irons disposed above multiple sets of cantilever beams on the same side. The six sets of side support angle irons are arranged at intervals along the length of the vehicle frame and are distributed in three layers in the vertical direction, forming a rectangular frame. The two ends of two sets of side support angle irons at the same height are connected together by horizontal bars to form a rectangular arrangement. Multiple sets of vertical bars are connected to the outer side of three sets of side support angle irons on the same side. The multiple sets of vertical bars on the same side are arranged at intervals along the length of the side support angle irons. The top of the multiple sets of vertical bars on the same side is connected to a longitudinal plate by fasteners. The opposite ends of the two sets of horizontal bars at the top are respectively connected to rectangular bars, and the two ends of the two sets of rectangular bars are respectively fixedly connected to the top of the corresponding side vertical bars.

[0017] As a preferred embodiment of the present invention, the first support includes a long beam plate disposed above two sets of supports at the same position. Both ends of the long beam plate are integrally formed with connecting ends. The top of both ends of the two sets of connecting ends are provided with end connection holes. The top of each set of supports is provided with four sets of first connecting holes arranged in a rectangle. The two sets of first connecting holes located on the inner side correspond one-to-one with the end connection holes of the corresponding side connecting ends. The first connecting holes can be connected together with the end connection holes at the corresponding positions by fasteners.

[0018] The limiting connector includes multiple sets of connecting platforms integrally formed on the top of the connecting beam and the long beam plate. The multiple sets of connecting platforms in the same position are equidistantly spaced, and each set of connecting platforms has an assembly hole at one end for connecting the first supporting angle steel.

[0019] As a preferred embodiment of the present invention, the fixed connector includes connecting lugs integrally formed at both ends of the connecting beam. The inner ends of the cantilever beam are fixedly connected with second lugs. Each set of second lugs has two sets of second mounting holes on its surface. Each set of connecting lugs and the second mounting holes at corresponding positions have through holes. The through holes and second mounting holes at the same position can be connected together by fasteners, thereby fixing the connecting beam and the corresponding side cantilever beam together.

[0020] As a preferred embodiment of the present invention, the second support member includes a connecting seat disposed at the same position and a mounting strip on the top of the support seat;

[0021] Each set of mounting strips has an integrally formed mounting block on its outer end. Each set of support bases has two sets of fourth mounting holes on its top. Each set of mounting blocks has a seventh mounting hole on its surface at the corresponding position of the two sets of fourth mounting holes. The fourth mounting holes and the seventh mounting holes at the same position are connected together by fasteners.

[0022] Each set of mounting strips has an integrally formed mounting plate at both ends of its inner side. Each set of connecting seats has holes at the top of both ends. Each set of mounting plates has a sixth mounting hole at the corresponding hole position. The sixth mounting holes and the holes at the same position are fixedly connected together by fasteners.

[0023] The supporting connector includes multiple sets of square plates integrally formed on the top of the cantilever beam and the mounting strip. The multiple sets of square plates are arranged at equal intervals, and each set of square plates has a fifth mounting hole on both sides of the top.

[0024] Each set of connecting seats has an integrally formed protrusion on the top inner side. Each set of protrusions has three sets of eighth mounting holes on its surface. Each set of supports has a round hole at the top center. The three sets of eighth mounting holes on the surface of each set of protrusions correspond one-to-one with the two sets of first connecting holes and the round hole on the top inner side of the support and can be connected together by fasteners.

[0025] As a preferred embodiment of the present invention, the peripheral surfaces of the limiting member and the support member are respectively provided with protective plates, and a step is fixedly connected to the outer surface of each set of support members. A square hole is opened on the outer surface of each set of support members at a position corresponding to the step.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. This invention, through the setting of flexible connectors, limiting components, and supporting components, utilizes the elastic properties of the rubber bushing to effectively absorb the vibration and impact between the vehicle frame and the load-bearing components during vehicle operation, forming a buffer barrier to protect the battery pack from vibration damage. The load-bearing strip cooperates with the rubber bushing and is securely connected to the fork arm through fasteners. The fork arm and connecting strip are integrally formed and connected to the vehicle frame through fixing holes. The overall connection structure is reliable, ensuring a stable assembly between the flexible connector and the frame and load-bearing components. Furthermore, the limiting components form a limiting space that adapts to the shape of the battery pack, which can circumferentially limit the battery pack and prevent lateral or longitudinal displacement. Combined with two sets of supporting components, the battery pack can be supported at the bottom and vertically limited to prevent vertical displacement. The overall structure provides multi-dimensional protection for the battery pack's installation stability and usage safety.

[0028] 2. This invention, through the arrangement of load-bearing components, provides a uniform and stable load-bearing foundation for the battery pack by having multiple connecting beams spaced apart along the length of the vehicle frame. Furthermore, the limiting connectors at the top of the connecting beams facilitate connection with the limiting components, ensuring stable assembly of the limiting components. The fixing connectors at both ends of the connecting beams facilitate connection with the mounting components, ensuring reliable installation of the mounting components. The structure at the top of the support facilitates the installation of flexible connectors, and the first support component on the support can assist in supporting the battery pack, further improving the load-bearing stability of the battery pack. At the same time, the hollow design on the side of the connecting beams achieves lightweighting while ensuring structural strength, reducing the overall weight.

[0029] 3. By setting up the mounting component, the connecting seat and the outer side of the support are installed together, and the cantilever beam extends outward, which can effectively provide a lateral installation support foundation for the battery pack. At the same time, the connecting seat has a weight-reducing hollow window and the side of the cantilever beam has a hollow design, which can achieve lightweighting while ensuring structural strength and reducing the overall weight. In addition, the extension length of the cantilever beam can be adjusted or different sizes of connecting seats can be replaced according to the width specifications of the battery pack to adapt to the lateral installation support requirements of battery packs of different widths. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the heavy truck frame with side mounting and bottom-mounted power battery frame according to the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the present invention connected to the vehicle frame;

[0032] Figure 3 This is a schematic diagram of the fork arm structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the installation position of the bottom angle steel of the present invention;

[0034] Figure 5 This is a schematic diagram of the fixing hole structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the second connecting hole of the present invention;

[0037] Figure 8 This is a schematic diagram of the connecting beam of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the long beam plate of the present invention;

[0039] Figure 10 This is a schematic diagram of the cantilever beam structure of the present invention;

[0040] Figure 11This is a schematic diagram of the structure of the bearing strip of the present invention;

[0041] Figure 12 This is a schematic diagram of the structure of the present invention after installing 6 battery packs;

[0042] Figure 13 This is a schematic diagram of the structure of the present invention after installing four battery packs;

[0043] Figure 14 This is a schematic diagram of the installation structure of the protection plate of the present invention.

[0044] In the picture:

[0045] 100. Support; 101. Connecting beam; 102. Connecting platform; 103. Assembly hole; 104. Connecting lug; 105. Through hole; 106. First connecting hole; 107. Long beam plate; 111. Connecting end; 112. End connection hole; 113. Round hole;

[0046] 200. Connecting seat; 201. Hole; 202. Second ear plate; 203. Second mounting hole; 204. Cantilever beam; 207. Support seat; 208. Fourth mounting hole; 209. Mounting strip; 211. Square plate; 212. Fifth mounting hole; 213. Mounting plate; 214. Sixth mounting hole; 215. Mounting block; 216. Seventh mounting hole; 217. Eighth mounting hole;

[0047] 300, load-bearing strip; 301, first connecting hole; 302, rubber bushing; 303, fork arm; 304, fixing hole; 305, connecting strip; 306, second connecting hole;

[0048] 400. Stepping;

[0049] 500. Vertical bar; 502. Side support angle iron; 503. Horizontal bar; 504. Rectangular bar; 505. Vertical plate;

[0050] 600. Bottom angle steel; 601. First supporting angle steel; 602. Horizontal angle steel; 603. Second supporting angle steel; 604. Vertical bar;

[0051] 700, Battery pack; 703, Protection board; 704, Square hole. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please see Figure 1-14 This embodiment provides a side-mounted and bottom-mounted power battery frame for a heavy-duty truck frame, including a carrier component located at the bottom of the vehicle frame to provide an installation base for the battery pack 700 to meet its installation requirements; a flexible connector installed on top of the carrier component, which elastically connects the carrier component to the vehicle frame and buffers vibration and impact between the frame and the carrier component during vehicle operation; two sets of mounting components symmetrically arranged on both sides of the carrier component along its width to support the battery pack 700 and provide lateral mounting support; a limiting component installed inside the carrier component, forming a limiting space adapted to the shape of the battery pack 700 to circumferentially limit the battery pack 700 placed inside the carrier component; and two sets of support components corresponding to the two sets of mounting components to provide bottom support and vertical limitation for the battery pack 700 mounted inside them.

[0054] The flexible connector includes rubber bushings 302 respectively embedded in the upper surface of each set of supports 100. Each set of rubber bushings 302 has a bearing strip 300 inserted into its inner cavity. Both ends of each set of bearing strips 300 extend to the outer side of the corresponding side rubber bushing 302. Each set of bearing strips 300 has a first connecting hole 301 at the top of both ends. Each set of bearing strips 300 has a fixing member at the top for connecting to the corresponding side surface of the vehicle frame.

[0055] The fasteners include fork arms 303 located at the top of both ends of each set of support bars 300. Each set of fork arms 303 has a second connecting hole 306 at its bottom. First connecting holes 301 are connected to the corresponding second connecting holes 306 via fasteners, thus connecting both ends of the support bar 300 to the corresponding side fork arms 303. A connecting strip 305 is integrally formed between the upper parts of two sets of fork arms 303 at the same position. Both the fork arms 303 and the connecting strip 305 at the same position have fixing holes 304 for connecting to the vehicle frame. Through the installation of flexible connectors, limiting components, and supporting components, the rubber bushing 302 utilizes its elastic properties to effectively absorb the vibration and impact between the frame and the support components during vehicle operation, forming a buffer. The impact barrier protects the battery pack 700 from vibration damage. The load-bearing bar 300 cooperates with the rubber bushing 302 and is firmly connected to the fork arm 303 by fasteners. The fork arm 303 and the connecting bar 305 are integrally formed and connected to the vehicle frame through the fixing hole 304. The overall connection structure is reliable and ensures that the soft connector is firmly assembled with the frame and load-bearing components. In addition, the limiting component forms a limiting space that matches the shape of the battery pack 700, which can limit the circumferential movement of the battery pack 700 and prevent the battery pack 700 from shifting laterally or longitudinally. Combined with two sets of support components, the battery pack 700 can be supported at the bottom and vertically limited to prevent the battery pack 700 from shifting up and down. The overall structure ensures the installation stability and use safety of the battery pack 700 from multiple dimensions.

[0056] The load-bearing component includes multiple connecting beams 101 located below the vehicle frame for supporting the battery pack 700. The multiple connecting beams 101 are spaced apart along the length of the vehicle frame. Each set of connecting beams 101 has a limiting connector at its top for connecting the limiting component, and each set of connecting beams 101 has a fixing connector at both ends for connecting the corresponding side mounting component.

[0057] Each set of connecting beams 101 has a support 100 integrally formed on both sides of the top. Each set of support 100 has four sets of first connecting holes 106 on the top. The four sets of first connecting holes 106 on the top of the same support 100 are arranged in a rectangular shape. The top of the two sets of support 100 in the same position is provided with a first support for supporting the battery pack 700.

[0058] The sides of each connecting beam 101 are hollowed out. Through the setting of the bearing components, multiple connecting beams 101 are spaced apart along the length of the vehicle frame, which can provide a uniform and stable bearing foundation for the battery pack 700. The limiting connector at the top of the connecting beam 101 facilitates connection with the limiting component, realizing the stable assembly of the limiting component. The fixing connectors at both ends of the connecting beam 101 facilitate connection with the mounting component, ensuring the reliable installation of the mounting component. The structure at the top of the support 100 facilitates the installation of the flexible connector. The first support component set on the support 100 can assist in supporting the battery pack 700, further improving the bearing stability of the battery pack 700. At the same time, the hollow design of the sides of the connecting beam 101 achieves lightweighting and reduces the overall weight while ensuring structural strength.

[0059] The mounting component includes a connecting seat 200 respectively disposed on the outside of each set of supports 100. Each set of connecting seats 200 has an outwardly extending cantilever beam 204 fixedly connected to the bottom of the outer side. Each set of cantilever beams 204 has a support connector for connecting the support component at the top. Each set of cantilever beams 204 has a support seat 207 integrally formed on the top of the outer side in the form of a vertical plate. The support seat 207 and the top of the connecting seat 200 on the same side are provided with a second support component for supporting the battery pack 700.

[0060] The connector 200 is plate-shaped with a rectangular weight-reducing perforated window. The cantilever beam 204 has a perforated side. The support 207 has multiple sets of elongated waist-shaped holes extending vertically on its side. With the mounting bracket, the connector 200 is installed in conjunction with the outer side of the support 100. The cantilever beam 204 extends outward, effectively providing a lateral installation support foundation for the battery pack 700. At the same time, the connector 200 with its weight-reducing perforated window and the cantilever beam 204 with its perforated side design achieve weight reduction while ensuring structural strength, thus reducing the overall weight. In addition, the extension length of the cantilever beam 204 can be adjusted or a connector 200 of a different size can be replaced according to the width of the battery pack 700 to adapt to the lateral installation support requirements of battery packs of different widths.

[0061] The limiting component includes first support angle steels 601 set on the top of both sides of multiple sets of connecting beams 101. The two ends of the two sets of first support angle steels 601 are connected together by bottom angle steels 600 to form a rectangle. Multiple sets of vertically arranged support bars 604 are connected to the outer side of the two sets of first support angle steels 601. A set of second support angle steels 603 is connected to the top of the multiple sets of support bars 604 on the same side. The two ends of the two sets of second support angle steels 603 are connected together by transverse angle steels 602. Through the setting of the limiting component, the first support angle steels 601, bottom angle steels 600, support bars 604, second support angle steels 603 and transverse angle steels 602 cooperate to form a rectangular frame structure, which encloses a limiting space that matches the shape of the battery pack 700. It can effectively limit the circumferential movement of the battery pack 700 placed in the carrier and restrict the lateral and longitudinal displacement of the battery pack 700 during vehicle operation.

[0062] The support structure includes six sets of side support angle irons 502 positioned above multiple sets of cantilever beams 204 on the same side. These six sets of side support angle irons 502 are spaced apart along the length of the vehicle frame and arranged in three layers vertically in a rectangular frame configuration. The ends of two sets of side support angle irons 502 at the same height are connected together by crossbars 503, forming a rectangular arrangement. Multiple sets of vertical bars 500 are connected to the outer sides of three sets of side support angle irons 502 on the same side. These vertical bars 500 are spaced apart along the length of the side support angle irons 502, and their tops are connected by fasteners. The longitudinal plate 505 has two sets of horizontal bars 503 located at the top, with rectangular bars 504 connected to opposite ends of each set. The two ends of the two sets of rectangular bars 504 are fixedly connected to the top of the corresponding side vertical bars 500. Through the setting of the support members, the side support angle irons 502 are arranged at intervals along the length of the vehicle frame and distributed in multiple layers in the vertical direction. Together with the horizontal bars 503, vertical bars 500, longitudinal plate 505 and rectangular bars 504, they form a stable rectangular frame structure. This frame structure can reliably support the bottom of the battery pack 700 mounted in the mounting member, and at the same time achieve vertical limit to prevent the battery pack 700 from shifting up and down during vehicle operation.

[0063] The first support includes a long beam plate 107 located above two sets of supports 100 at the same position. Both ends of the long beam plate 107 are integrally formed with connecting ends 111. The top of both ends of the two sets of connecting ends 111 are provided with end connection holes 112. The top of each set of supports 100 is provided with four sets of first connecting holes 106 arranged in a rectangle. The two sets of first connecting holes 106 located on the inner side correspond one-to-one with the end connection holes 112 of the corresponding side connecting ends 111. The first connecting holes 106 can be connected to the end connection holes 112 at the corresponding position by fasteners.

[0064] The limiting connector includes multiple sets of connecting platforms 102 integrally formed on the top of the connecting beam 101 and the long beam plate 107. The multiple sets of connecting platforms 102 in the same position are equidistantly spaced. Each set of connecting platforms 102 has an assembly hole 103 at one end for connecting the first support angle steel 601. Through the setting of the first support and the limiting connector, the long beam plate 107 cooperates with the first connecting hole 106 at the top of the support 100 through the connecting end 111, and a stable connection is achieved with the help of fasteners. This can effectively enhance the load-bearing effect of the battery pack 700 and improve the load-bearing stability. At the same time, the multiple sets of connecting platforms 102 in the limiting connector are spaced apart, and the assembly holes 103 at the top of the connecting platforms 102 facilitate connection with the first support angle steel 601 in the limiting connector, so as to achieve precise and stable assembly of the limiting connector and provide a reliable installation foundation for the limiting connector to perform its circumferential limiting function.

[0065] The fixing connector includes connecting lugs 104 integrally formed at both ends of the connecting beam 101. Second lugs 202 are fixedly connected to the inner ends of the cantilever beam 204. Each set of second lugs 202 has two sets of second mounting holes 203 on its surface. Each set of connecting lugs 104 and the corresponding second mounting holes 203 have through holes 105. Through holes 105 and second mounting holes 203 in the same position can be connected together by fasteners, thereby fixing the connecting beam 101 to the corresponding cantilever beam 204 together. By setting the fixed connector, the connecting ear plate 104 cooperates with the second ear plate 202 on the inner side of the cantilever beam 204, and a stable connection is achieved through the through hole 105, the second mounting hole 203 and the fastener. This can effectively fix the connecting beam 101 of the load-bearing component and the cantilever beam 204 of the mount component together, ensuring the connection stability between the load-bearing component and the mount component. It also prevents the lateral support effect of the mount component on the battery pack 700 from being affected by the loose connection during vehicle operation, providing a stable connection foundation for the lateral load of the battery pack 700, and facilitating assembly and subsequent maintenance.

[0066] The second support includes a connecting seat 200 and a mounting strip 209 on the top of the support seat 207, both located at the same position.

[0067] Each set of mounting strips 209 has an integrally formed mounting block 215 on its outer end. Each set of support bases 207 has two sets of fourth mounting holes 208 on its top. Each set of mounting blocks 215 has a seventh mounting hole 216 on its surface and at the corresponding positions of the two sets of fourth mounting holes 208. The fourth mounting holes 208 and the seventh mounting holes 216 at the same position are connected together by fasteners.

[0068] Each set of mounting strips 209 has an integrally formed mounting plate 213 at both ends of its inner side. Each set of connecting seats 200 has holes 201 at the top of both ends. Each set of mounting plates 213 and the corresponding holes 201 have a sixth mounting hole 214. The sixth mounting hole 214 and the holes 201 at the same position are fixedly connected together by fasteners.

[0069] The support connector includes multiple sets of square plates 211 integrally formed on the top of the cantilever beam 204 and the mounting strip 209. The multiple sets of square plates 211 are arranged at equal intervals, and each set of square plates 211 has a fifth mounting hole 212 on both sides of the top.

[0070] Each set of connecting seats 200 has an integrally formed protrusion on its top inner side. Each protrusion has three sets of eighth mounting holes 217 on its surface. Each set of supports 100 has a circular hole 213 at its top center. The three sets of eighth mounting holes 217 on the surface of each protrusion correspond one-to-one with the two sets of first connecting holes 106 and the circular hole 213 on the inner top of the support 100, and can be connected together by fasteners. Through the setting of the second support member and the supporting connecting member, the mounting strip 209 in the second support member engages with the fourth mounting hole 208 of the support seat 207 via the mounting block 215, and the mounting plate 213 engages with the hole 201 of the connecting seat 200. A stable connection is achieved with the help of fasteners. The lateral bearing capacity of the connector 200 and support 207 for the battery pack 700 is further strengthened, improving bearing reliability. In addition, multiple sets of square plates 211 in the support connector are spaced apart, and the fifth mounting hole 212 on the top of the square plate 211 facilitates connection with the support, realizing precise assembly of the support and ensuring the support's effect of supporting the bottom of the battery pack 700 and vertically limiting it. Furthermore, the protrusion on the top of the connector 200 cooperates with the first connecting hole 106 and the round hole 213 of the support 100 through the eighth mounting hole 217, which can further enhance the connection stability between the connector 200 and the support 100, and improve the overall reliability of the coordinated work of the mounting component, the bearing component, and the support component.

[0071] The limiting component and the support component are each provided with a protective plate 703 on their peripheral surfaces. A step 400 is fixedly connected to the outer surface of each support component. The step 400 is installed on the outside of the corresponding support component by bolt connection. A square hole 704 is opened on the outer surface of each support component and at the position corresponding to the step 400. Through the setting of the protective plate 703 and the step 400, the protective plate 703 on the peripheral surface of the limiting component and the support component can physically isolate external debris, avoid the collision of debris and damage to the limiting component and the support component or scratching of the battery pack 700, improve the protection effect of the components and the battery pack 700, and provide convenient stepping points for workers to install and maintain the battery pack 700, solving the problem of no foothold during operation.

[0072] The protective plate is connected to the limiting component. The second supporting angle steel 603 and the transverse angle steel 602 in the limiting component are respectively provided with mounting holes that match the diameter of the angle steel at the corresponding positions of the protective plate, and are fixed by bolts.

[0073] The protective plate is connected to the support component. Corresponding to the vertical strip 500 and rectangular strip 504 in the support component, a flange is reserved on the edge of the protective plate. Mounting holes are opened on the flange. The original assembly holes of the support component or newly added adapter holes can be reused to connect with the preset holes of the vertical strip and rectangular strip.

[0074] The fasteners can be one or more of the following: high-strength bolts, lock nuts, flat washers, spring washers, etc. The specific selection will not be further limited here.

[0075] Working principle;

[0076] To prevent frame vibration from being directly transmitted to the battery pack 700 during vehicle operation, a rubber bushing 302 is embedded in the upper surface of the support bracket 100. The support strip 300 is inserted into the inner cavity of the rubber bushing 302 and extends to the outer side of the bushing at both ends. The two ends of the support strip 300 are connected to the bottom connection holes of the fork arm 303 through their own reserved connection holes, and are fixed to the fork arm 303 with the help of fasteners. The fork arm 303 and the connecting strip 305 are integrally formed and then connected to the vehicle frame through the fixing holes 304 on the surface of the fork arm 303 and the connecting strip 305. When the vehicle is in motion, the rubber bushing 302 uses its own elastic properties to absorb the vibration impact between the frame and the support, forming a buffer barrier to protect the battery pack 700 from vibration damage.

[0077] Meanwhile, the mounting components are symmetrically arranged on both sides along the width direction of the bearing component, and the connecting seat 200 is set on the outside of the support 100. The cantilever beam 204 is fixed to the connecting seat 200 and extends outward. The cantilever beam 204 has a hollow side and the connecting seat 200 has a weight-reducing hollow window, which takes into account both lightweight and strength.

[0078] The outer top of the cantilever beam 204 is integrally formed with a support base 207. The top of the connecting seat 200 and the support base 207 are further reinforced by the second support member mounting strip 209. The mounting strip 209 is fixed by the mounting plates 213 at both ends cooperating with the holes 201 of the connecting seat 200 and the outer mounting block 215 cooperating with the mounting holes of the support base 207, together providing a lateral load-bearing foundation for the battery pack 700. The long strip-shaped waist-shaped hole reserved on the side of the support base 207 can be adapted to the installation fine adjustment requirements.

[0079] Meanwhile, the support components are installed in the two sets of mounting components. Multiple sets of side support angle irons 502 are arranged at intervals along the length of the frame and distributed in multiple layers along the vertical direction. The side support angle irons 502 at the same height form a rectangular frame through the horizontal bars 503. Multiple sets of vertical bars 500 are connected to the outside of the side support angle irons 502. The top of the vertical bars 500 is fixed to the top of the vertical bars 500 through the longitudinal plates 505 and the rectangular bars 504 to form a stable frame structure.

[0080] Furthermore, the support member is fixed to the mounting member by pre-reserved mounting holes through the cantilever beam 204 of the support connector and multiple sets of square plates 211 at the top of the mounting strip 209, ultimately providing bottom support and vertical limitation for the mounted battery pack 700, preventing the battery pack 700 from shifting up and down.

[0081] The limiting component is fixed by the limiting connector connecting platform 102 and the assembly hole 103 of the bearing component. The first supporting angle steel 601 on both sides of the top of the multiple sets of connecting beams 101 is connected to form a rectangular frame by the bottom angle steel 600. Multiple supporting bars 604 are connected to the outside of the first supporting angle steel 601. The top of the supporting bars 604 is connected to the second supporting angle steel 603. The two ends of the second supporting angle steel 603 are connected by the transverse angle steel 602, finally forming a complete rectangular limiting space. This space is adapted to the shape of the battery pack 700 and can limit the circumferential displacement of the battery pack 700 during vehicle operation, such as lateral and longitudinal movement, to ensure the installation stability of the battery pack 700.

[0082] The protective plate 703 is set on the periphery of the limiting member and the support member, which can provide physical protection for the limiting member, the support member and the internal battery pack 700 to avoid damage from external debris. The step 400 is fixedly connected to the outer surface of the support member, which is convenient for personnel to step on during maintenance and installation. The square hole 704 is opened on the outer side of the support member at the position corresponding to the step 400, which can achieve weight reduction while ensuring structural strength, and can also serve as an interface for auxiliary installation or heat dissipation.

[0083] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy truck frame side-hung underpinned power battery frame, characterized in that, The application relates to a battery pack mounting device for a vehicle, which comprises the following components: a bearing part arranged at the bottom of a vehicle frame and used for providing a mounting base for a battery pack (700) to adapt the mounting requirements of the battery pack (700); a soft connecting part mounted at the top of the bearing part, which is elastically connected with the vehicle frame through the soft connecting part and used for buffering the vibration impact between the vehicle frame and the bearing part during vehicle driving; two groups of hanging parts symmetrically arranged at the two sides of the bearing part along the width direction of the bearing part and used for bearing the battery pack (700) and providing lateral mounting support for the battery pack (700); a limiting part mounted at the inner side of the bearing part, which forms a limiting space matched with the outer shape of the battery pack (700) and used for circumferentially limiting the battery pack (700) placed in the bearing part; and two groups of supporting parts one-to-one corresponding mounted in the two groups of hanging parts and used for bottom supporting and vertically limiting the battery pack (700) hung in the supporting parts. The bearing part comprises a plurality of connecting beams (101) arranged below the vehicle frame and used for bearing the battery pack (700), the plurality of connecting beams (101) are arranged at intervals along the length direction of the vehicle frame, the top of each group of the connecting beams (101) is respectively provided with a limiting connecting part used for connecting the limiting part, and the two ends of each group of the connecting beams (101) are respectively provided with a fixing connecting part used for connecting the corresponding side hanging part. The top of each group of the connecting beams (101) is integrally formed with a support (100), the top of each group of the supports (100) is provided with four first connecting holes (106), the four first connecting holes (106) arranged on the top of the same support (100) are arranged in a rectangular shape, and the top of the two groups of supports (100) at the same position is provided with a first bearing part used for bearing the battery pack (700). The side surface of each group of the connecting beams (101) is arranged in a hollow mode. The soft connecting part comprises rubber bushings (302) respectively embedded on the upper surfaces of each group of supports (100), the inner cavities of each group of the rubber bushings (302) are respectively inserted with bearing strips (300), the two ends of each group of the bearing strips (300) respectively extend to the outer sides of the corresponding side rubber bushings (302), the two ends of each group of the bearing strips (300) are respectively provided with first connecting holes (301), and the top of each group of the bearing strips (300) is provided with a fixing part used for connecting the corresponding side surface of the vehicle frame. ​ 2. The heavy truck frame side-hung underbody battery box of claim 1, wherein: ​ ​ ​ 3. The heavy truck frame side-hung underbody battery box of claim 1, wherein: ​ The fixing piece includes fork arms (303) arranged at the top of both ends of each group of bearing strips (300), the bottom of each group of fork arms (303) is provided with a second connecting hole (306), the first connecting hole (301) is connected with the corresponding second connecting hole (306) through a fastener, thereby connecting the two ends of the bearing strip (300) with the corresponding side fork arm (303), the upper portions of the two groups of fork arms (303) at the same position are integrally formed with a connecting strip (305), and the surfaces of the fork arms (303) and the connecting strip (305) at the same position are provided with fixing holes (304) connected with the vehicle frame.

4. The heavy truck frame side-hung underbody battery box of claim 3, wherein: The mounting piece includes connecting seats (200) arranged outside each group of supports (100), the outer bottom of each group of connecting seats (200) is fixedly connected with an outwardly extending cantilever beam (204), the top of each group of cantilever beams (204) is provided with a support connecting piece for connecting the support piece, the outer top of each group of cantilever beams (204) is integrally formed with a support seat (207) arranged in a vertical plate shape, and the top of the support seat (207) and the connecting seat (200) on the same side is provided with a second supporting piece for supporting the battery pack (700). The connecting seat (200) is arranged in a plate shape with a rectangular weight-reducing hollow window, the side of the cantilever beam (204) is arranged in a hollow shape, and the side of the support seat (207) is provided with a plurality of long strip-shaped waist-shaped holes extending in the vertical direction.

5. The heavy truck frame side-hung underbody battery box of claim 1, wherein: The limiting piece includes first support angle steels (601) arranged at the top of both sides of the plurality of connecting beams (101), the two ends of the two groups of first support angle steels (601) are connected together in a rectangular shape through bottom angle steels (600), the outer sides of the two groups of first support angle steels (601) are connected with a plurality of vertically arranged support strips (604), the top of the plurality of support strips (604) on the same side is connected with a group of second support angle steels (603), and the two ends of the two groups of second support angle steels (603) are connected together through horizontal angle steels (602).

6. The heavy truck frame side-hung underbody battery box of claim 1, wherein: The support piece comprises six groups of side support angle irons (502) arranged above the cantilever beams (204) on the same side, the six groups of side support angle irons (502) are arranged at intervals along the length direction of the vehicle frame and are distributed in three layers in the vertical direction, are arranged in a rectangular frame, the two ends of the two groups of side support angle irons (502) at the same height are connected together by a horizontal bar (503) to form a rectangular arrangement, the outer sides of the three groups of side support angle irons (502) on the same side are connected with a plurality of vertical bars (500), the plurality of vertical bars (500) on the same side are arranged at intervals along the length of the side support angle iron (502), the top of the plurality of vertical bars (500) on the same side is connected with a longitudinal plate (505) through a fastener, the opposite ends of the two groups of horizontal bars (503) above are respectively connected with a rectangular bar (504), and the two ends of the two groups of rectangular bars (504) are respectively fixedly connected to the top of the corresponding vertical bar (500).

7. The heavy truck frame side-hung underbody battery box of claim 4, wherein: The first supporting piece comprises a long beam plate (107) arranged above the two groups of supports (100) at the same position, the two ends of the long beam plate (107) are integrally formed with a connecting end (111), the top of the two ends of the two groups of connecting ends (111) is provided with a terminal hole (112), the top of each group of supports (100) is provided with four groups of first connecting holes (106) arranged in a rectangular shape, the two groups of first connecting holes (106) on the inner side are one-to-one corresponding to the terminal holes (112) of the corresponding side connecting ends (111), and the first connecting holes (106) can be connected together with the terminal holes (112) at the corresponding position through a fastener. The limiting connecting piece comprises a plurality of connecting tables (102) integrally formed on the top of the connecting beam (101) and the long beam plate (107), the plurality of connecting tables (102) at the same position are arranged at intervals, and the top of one end of each group of connecting tables (102) is provided with an assembly hole (103) for connecting the first support angle steel (601).

8. The heavy truck frame side-hung underbody battery box of claim 7, wherein: The fixed connecting piece comprises a connecting lug plate (104) integrally formed at the two ends of the connecting beam (101), the inner side end of the cantilever beam (204) is fixedly connected with a second lug plate (202), the surface of each group of second lug plates (202) is provided with two groups of second mounting holes (203), each group of connecting lug plates (104) and the second mounting holes (203) at the corresponding position are provided with a through hole (105), and the through holes (105) and the second mounting holes (203) at the same position can be connected together through a fastener, so that the connecting beam (101) and the corresponding side cantilever beam (204) are fixedly connected together.

9. The heavy truck frame side-hung underbody battery box of claims 1-8, wherein: The second supporting piece comprises a mounting strip (209) arranged on the top of the connecting seat (200) and the supporting seat (207) at the same position. The outer end of each of the mounting strips (209) is integrally formed with a mounting block (215), the top of each of the support seats (207) is provided with two groups of fourth mounting holes (208), the surface of each of the mounting blocks (215) and the position of the corresponding two groups of fourth mounting holes (208) are provided with seventh mounting holes (216), and the fourth mounting holes (208) and the seventh mounting holes (216) at the same position are connected together through fasteners; The inner ends of each of the mounting strips (209) are integrally formed with mounting plates (213), the top of each of the connecting seats (200) is provided with holes (201), the surface of each of the mounting plates (213) and the position of the corresponding holes (201) are provided with sixth mounting holes (214), and the sixth mounting holes (214) and the holes (201) at the same position are fixedly connected together through fasteners; The support connecting pieces comprise a plurality of square plates (211) integrally formed on the top of the cantilever beams (204) and the mounting strips (209), the plurality of square plates (211) are arranged at equal intervals, and the top of the two sides of each of the square plates (211) is provided with fifth mounting holes (212); The inner side of the top of each of the connecting seats (200) is integrally formed with a protrusion, the surface of each of the protrusions is provided with three groups of eighth mounting holes (217), the top center of each of the support seats (100) is provided with a circular hole (113), and the three groups of eighth mounting holes (217) on the surface of each of the protrusions correspond to the two groups of first connecting holes (106) and the circular hole (113) on the inner side of the top of the support seat (100) and can be connected together through fasteners.

10. The heavy truck frame side-hung underbody battery box of any one of claims 1-9, wherein: The circumferential surfaces of the limiting pieces and the support pieces are respectively provided with protective plates (703), the outer side surfaces of each of the support pieces are fixedly connected with steps (400), and the outer side surfaces of each of the support pieces and the positions corresponding to the steps (400) are provided with square holes (704).

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