An embedded power battery mounting structure

Abstract

The application provides an embedded power battery mounting structure, wherein the power battery is fixedly mounted between two longitudinal beams of a vehicle frame through a mounting bracket, the height of the power battery extends to the lower side of the vehicle frame, and the mounting bracket comprises a battery bracket, a bracket connecting piece and a first bracket mounting seat; the battery bracket is provided with one or more; when the battery bracket is provided with multiple, the upper and lower arrangement is connected through the bracket connecting piece; the first bracket mounting seat is fixedly connected with the uppermost battery bracket; and the first bracket mounting seat is fixedly connected with the vehicle frame. The application effectively solves the problems of limited upper mounting space and poor chassis universality caused by unscientific power battery mounting position and structure in the prior art.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric commercial vehicle manufacturing, and particularly relates to an embedded power battery mounting structure. BACKGROUND

[0002] The electric commercial vehicle has become a key product of new energy vehicles due to energy saving, environmental protection and low noise. At present, the power battery is basically arranged on the outside of the frame or behind the cab on the market, and in order to meet the requirement of driving range, the power battery occupies more and more space, especially when the power battery is installed on the outside of the frame, the width of the chassis is greatly affected (i.e. the width of the chassis is increased), and when the power battery is installed behind the cab, the height of the chassis is greatly affected (i.e. the height of the chassis is increased), which inevitably affects the utilization of the space of the upper carriage and the installation space of the chassis modified as a special operation vehicle equipment, thereby leading to poor versatility of the chassis. With the popularization of electric drive axle technology, the space inside the frame is no longer limited by the arrangement space of the transmission system parts. It provides the possibility for the installation of the position of the chassis parts. SUMMARY

[0003] Based on the above-mentioned defects, the application provides an embedded power battery mounting structure, which effectively solves the problems of limited upper loading space and poor versatility of the chassis caused by unscientific power battery installation position and structure in the prior art.

[0004] The application is implemented by the following technical solutions:

[0005] An embedded power battery mounting structure, the power battery is fixedly installed between the two longitudinal beams of the frame through a mounting bracket, the height of the power battery extends downward to the frame, and the mounting bracket comprises a battery bracket, a bracket connecting piece and a first bracket mounting seat.

[0006] Further, the battery bracket comprises a U-shaped longitudinal beam, an L-shaped transverse beam, a few-shaped transverse beam and a rib plate, the U-shaped longitudinal beams are fixedly connected through the few-shaped transverse beam and the L-shaped transverse beam, the few-shaped transverse beam has two ends fixedly installed on the two ends of the U-shaped longitudinal beam respectively, and the rib plate is fixedly installed at the included angle between the few-shaped transverse beam and the U-shaped longitudinal beam.

[0007] Further, the bracket connecting piece is a sheet metal bending structure, a plurality of bolt mounting holes are equidistantly arranged on the bracket connecting piece, the bracket connecting piece is mounted on the H-shaped cross beam, one side of the first support mounting seat is mounted on the bracket connecting piece, and the other side is mounted on the H-shaped cross beam through another bracket connecting piece, and the bracket connecting pieces are distributed on the front and back sides of the first support mounting seat.

[0008] Further, the upper portion of the first support mounting seat is provided with an outward bending portion, a support mounting hole is arranged on the bending portion, and the support mounting hole is fixedly connected with the frame cross beam through a bolt.

[0009] Further, the frame is provided with a cross beam, the cross beam is fixedly connected with a second support mounting seat, and the first support mounting seat is fixedly connected with the second support mounting seat.

[0010] Further, a buffer connecting piece is arranged between the first support mounting seat and the second support mounting seat.

[0011] Further, the buffer connecting piece is a connecting piece with a rubber pad.

[0012] Compared with the prior art, the present application has the following beneficial technical effects:

[0013] The present application solves the problems of limited upper mounting space and poor chassis universality caused by unscientific installation position and structure of the power battery in the prior art. By moving the unscientific installation position of the power battery in the traditional technology to between the frame longitudinal beams and extending the height of the power battery pack to the lower part of the frame, the entire battery pack becomes an embedded installation structure, leaving sufficient modification space for the upper part of the frame. By setting the bracket connecting piece as a bending structure, the bending strength of the bracket connecting piece can be increased, and equidistant bolt mounting holes are arranged on the bracket connecting piece, so that the battery bracket can be adaptively adjusted according to the size of the battery box. By setting the bracket connecting piece as the inner and outer sides of the first support mounting seat, when the inner bracket connecting piece is a support and the outer bracket connecting piece is a reinforcing piece, the outer bracket connecting piece can be easily disassembled for maintenance of the battery, and the operator can check the wiring harness of the battery and connect external equipment. By setting the upper part of the first mounting seat as an outward bending portion and arranging a support mounting hole thereon, the mounting bracket can be conveniently and firmly mounted on the frame cross beam. By installing a buffer connecting piece between the first mounting seat and the second mounting seat, the power battery pack is prevented from being affected by the torsional deformation of the frame and the vibration under vibration conditions, so that the power battery pack is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. Other related drawings can also be obtained by those of ordinary skill in the art without any creative effort, on the premise of not paying any creative effort.

[0015] Figure 1 A schematic diagram of a slot-form beam double-layer battery box and its mounting bracket mounting structure provided by an embodiment of the present application is shown in FIG. 1.

[0016] Figure 2 A schematic diagram of a circular tube-form beam double-layer battery box and its mounting bracket mounting structure provided by an embodiment of the present application is shown in FIG. 2.

[0017] Figure 3 A schematic diagram of a perspective view mounting bracket structure provided by an embodiment of the present application is shown in FIG. 3.

[0018] Figure 4 A schematic diagram of another perspective view mounting bracket structure provided by an embodiment of the present application is shown in FIG. 4.

[0019] Figure 5 A schematic diagram of a battery bracket structure provided by an embodiment of the present application is shown in FIG. 5.

[0020] Figure 6 A schematic diagram of a battery bracket and battery box mounting structure provided by an embodiment of the present application is shown in FIG. 6.

[0021] Figure 7 A schematic diagram of a mounting bracket and vehicle frame mounting structure provided by an embodiment of the present application is shown in FIG. 7.

[0022] Figure 8 A Figure 7 magnified view of part A of FIG. 7.

[0023] Explanation of reference signs:

[0024] 1 - battery bracket, 101 - U-shaped longitudinal beam, 102 - L-shaped beam, 103 - H-shaped beam, 104 - rib plate, 2 - first bracket mounting seat, 3 - bracket connecting piece, 4 - power battery box, 5 - second bracket mounting seat, 6 - vehicle frame longitudinal beam, 7 - vehicle frame circular tube-form beam, 8 - vehicle frame slot-form beam, 9 - buffer connecting piece. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Figure 1The schematic diagram of the installation structure of the groove type beam double-layer battery box and the mounting bracket thereof provided by an embodiment of the application is shown in the figure. Figure 2 The schematic diagram of the installation structure of the circular tube type beam double-layer battery box and the mounting bracket thereof provided by an embodiment of the application is shown in the figure.

[0032] As shown in the figures, Figure 1 and Figure 2 the installation structure comprises that the power battery is fixedly installed between the two longitudinal beams of the vehicle frame through the mounting bracket, the height of the power battery extends to the lower side of the vehicle frame, the mounting bracket comprises a battery bracket, a bracket connecting piece and a first bracket mounting seat, the battery bracket is provided with one or more, when the battery bracket is provided with multiple, the upper and lower arrangement is connected through the bracket connecting piece, the first bracket mounting seat is fixedly connected with the uppermost battery bracket, and the first bracket mounting seat is fixedly connected with the vehicle frame.

[0033] The following is described in detail through specific embodiments. The power battery box 4 has two layers, which are fixedly installed between the two longitudinal beams 6 of the vehicle frame through the mounting bracket, the height of the power battery box 4 extends to the lower side of the vehicle frame, but the length of the extension cannot be less than the minimum distance required by the vehicle chassis from the ground, the mounting bracket comprises a battery bracket 1, a bracket connecting piece 3 and a first bracket mounting seat 2, the battery bracket 1 is provided with two and is installed in an upper and lower arrangement through the bracket connecting piece 3, the installation mode is installed by bolts, the first bracket mounting seat 2 is fixedly connected with the uppermost battery bracket 1 through bolts, and the first bracket mounting seat 2 is fixedly connected with the vehicle frame groove type beam 8 through bolts, so as to fix the entire mounting bracket, further achieve the inlaid type power battery installation mode of the vehicle frame, and solve the problems of limited upper installation space and poor chassis universality caused by the unscientific installation position and structure of the power battery in the prior art. By moving the unscientific installation position of the power battery in the conventional technology to between the longitudinal beams of the vehicle frame and extending the height of the power battery pack to the lower side of the vehicle frame, the entire battery pack becomes an inlaid type installation structure, and sufficient modification space is left for the upper part of the vehicle frame.

[0034] Based on the technical solutions of the above embodiments, further scheme optimization can be made, specifically, Figure 5 The schematic diagram of the battery bracket structure provided by an embodiment of the application is shown in the figure, Figure 5As shown, the battery trolley 1 comprises a U-shaped longitudinal beam 101, an L-shaped transverse beam 102, a few-shaped transverse beam 103 and a rib plate 104, the U-shaped longitudinal beam 101 has two parallel settings, which are mutually welded and fixed by two few-shaped transverse beams 103 and an L-shaped transverse beam 102, the few-shaped transverse beam 103 has two front and back ends welded and fixed to the two ends of the U-shaped longitudinal beam respectively, and the few-shaped transverse beam 103 is fixed and welded with the rib plate 104 at the included angle of the U-shaped longitudinal beam 101. By setting the transverse beam as a few-shaped and oppositely setting the transverse beams, the strength of the frame body can be improved, and the flanging part can be bolted with other connecting pieces to reserve the installation position for installation. By setting the L-shaped transverse beam 102 as an L-shaped, the bending strength of the transverse beam is improved; by setting the rib plate at the included angle, the battery trolley 1 is not easy to deform when subjected to torsional force.

[0035] Figure 3 A view angle installation support structure schematic diagram provided by an embodiment of the present application is shown in the figure; Figure 4 Another view angle installation support structure schematic diagram provided by an embodiment of the present application is shown in the figure; Figure 3 and 4 As shown, the trolley connecting piece 3 is a sheet metal bending structure, and 10 bolt mounting holes are equidistantly arranged on a large area plate surface, the trolley connecting piece 3 is bolted on the few-shaped transverse beam 103, and is respectively arranged at the two ends of the trolley connecting piece 3, one side of the first support mounting seat 2 is bolted on the inner side of the trolley connecting piece 3, and the other side is bolted on the few-shaped transverse beam through another trolley connecting piece 3, at this time, the other trolley connecting piece 3 is located on the outer side of the first support mounting seat 2, that is, the trolley connecting pieces 3 are distributed on the front and back sides of the first support mounting seat 2.

[0036] By setting the trolley connecting piece as a bending structure, the bending strength of the trolley connecting piece can be increased, and by equidistantly arranging bolt mounting holes on the trolley connecting piece, the battery trolley can be adaptively adjusted according to the size of the battery box; by setting the trolley connecting piece on the inner and outer sides of the first support mounting seat, when the trolley connecting piece on the inner side is a supporting piece and the trolley connecting piece on the outer side is a reinforcing piece, the trolley connecting piece on the outer side can also be easily disassembled when the battery is maintained later, and the operator can easily check the wire harness of the battery and connect the external equipment.

[0037] As shown, Figure 1 and 2As shown, the frame is also provided with a cross beam, and the cross beam has two types, one of which is a frame round pipe cross beam 7; the other is a frame groove cross beam 8, and a second support mounting seat 5 is welded on the cross beam. Of course, according to different types of cross beams, the structure of the weldable second support mounting seat 5 is also different, and adaptive adjustment can be made according to actual needs. The first support mounting seat 2 and the second support mounting seat 5 can be fixedly connected by bolts. Of course, the upper part of the first support mounting seat 2 is also provided with an outward bending part, and a support mounting hole is formed in the bending part, which is fixedly connected with the second support mounting seat 5 by bolts. In this case, it can be preferred that, Figure 7 The mounting support and frame mounting structure schematic diagram provided by an embodiment of the application; Figure 8 The mounting support and frame mounting structure schematic diagram provided by an embodiment of the application; Figure 7 The A part enlarged view of the mounting support and frame mounting structure schematic diagram provided by an embodiment of the application. Figure 7 The A part enlarged view of the mounting support and frame mounting structure schematic diagram provided by an embodiment of the application. 8 As shown in the first support mounting seat 2 and the second support mounting seat 5, a buffer connecting piece 9 can also be installed between the first support mounting seat 2 and the second support mounting seat 5. The buffer connecting piece 9 can be a metal plate connecting piece with a rubber pad. At this time, the first support mounting seat 2 can be installed on one end face of the buffer connecting piece 9 through a bolt, and the other end face can be connected with the second support mounting seat 5 through a bolt. Of course, the first support mounting seat 2 and the second support mounting seat 5 are respectively pressed and installed on the two end faces of the rubber pad. In this way, the buffering effect can be achieved.

[0038] By setting the upper part of the first mounting support as an outward bending part, and forming a support mounting hole in the bending part, the mounting support can be conveniently and firmly installed on the frame cross beam. By installing a buffer connecting piece between the first mounting support and the second mounting support, the power battery pack can avoid the deformation influence caused by the torsional deformation of the frame, and the vibration influence caused by the vibration working condition, so that the power battery pack is more stable.

[0039] The mounting method of the application is as follows:

[0040] Step one: install the battery trailer and the battery box;

[0041] Step two: install the trailer connecting piece in the vertical direction at the four corners of the battery trailer, i.e. the two ends of the few-shaped cross beam;

[0042] Step three: fix and install the other layer of the installed battery trailer and the battery box on the upper end of the trailer connecting piece by bolts; at the same time, the first mounting support is also installed on the few-shaped cross beam with the trailer connecting piece.

[0043] Step four: install the buffer connecting piece on the second mounting support;

[0044] Step five: the double-layer battery installed in step three is lifted by a lifting device, transported to the frame, and fixedly connected with the buffer connecting piece, thus completing the whole installation process.

[0045] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An embedded power battery mounting structure, characterized in that, The power battery is fixedly mounted between the two longitudinal beams of the vehicle frame via a mounting bracket. The height of the power battery extends downwards from the vehicle frame, but the length of its extension cannot be less than the minimum distance required for the chassis to be off the ground. The mounting bracket includes: a battery trailer, a trailer connector, and a first bracket mounting seat. There are one or more battery trailers. When there are multiple battery trailers, they are connected vertically via the trailer connector. The first bracket mounting seat is fixedly connected to the uppermost battery trailer and also fixedly connected to the vehicle frame. The battery carrier includes: a U-shaped longitudinal beam, an L-shaped crossbeam, a Z-shaped crossbeam, and stiffeners. The U-shaped longitudinal beams are fixedly connected to each other by the Z-shaped crossbeams and the L-shaped crossbeams. There are two Z-shaped crossbeams, one at the front and one at the back, which are fixedly installed at both ends of the U-shaped longitudinal beams. Stiffeners are fixedly installed at the angle between the Z-shaped crossbeams and the U-shaped longitudinal beams. The trailer connector is a sheet metal bending structure. Several bolt mounting holes are equally spaced on the trailer connector. The trailer connector is installed on the Z-shaped crossbeam. One side of the first bracket mounting seat is installed on the trailer connector, and the other side is installed on the Z-shaped crossbeam through another trailer connector. The trailer connectors are distributed on the front and rear sides of the first bracket mounting seat. The upper part of the first bracket mounting base is provided with an outward bending part, and the bending part is provided with a bracket mounting hole, which is fixed to the vehicle frame crossbeam by bolts; The vehicle frame is provided with a crossbeam, and a second bracket mounting seat is fixedly connected to the crossbeam. The first bracket mounting seat and the second bracket mounting seat are fixedly connected. A buffer connector is also provided between the first bracket mounting base and the second bracket mounting base. The buffer connector is a connector with a rubber pad.

2. The installation method of the embedded power battery mounting structure according to claim 1, characterized in that... include: Step 1: Install the battery tray and battery box; Step 2: Install the bracket connectors vertically at the four corners of the battery bracket, that is, at both ends of the Z-shaped crossbeam; Step 3: Secure the other installed battery bracket and battery box to the upper end of the bracket connector using bolts; at the same time, install the first mounting bracket on the Z-shaped crossbeam along with the bracket connector; Step 4: Install the buffer connector onto the second mounting bracket; Step 5: Use a lifting device to lift the double-layer battery pack installed in Step 3 and transport it to the vehicle frame. Then, fix the first mounting bracket and the buffer connector in place. This completes the entire installation process.

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