Battery frame, battery system and vehicle

Abstract

The utility model provides a battery frame, a battery system and a vehicle. The battery frame comprises a supporting bottom plate and a three-side fence positioned on the supporting bottom plate, wherein the three-side fence comprises a back fence positioned on one side of the supporting bottom plate and two side fences which are respectively arranged on the other two sides of the supporting bottom plate and are oppositely arranged; one side, opposite to the back fence, of the battery frame is of an open structure, so that the back fence and the side fences enclose a protection space with an open side on the supporting bottom plate. The battery frame is simple in structure and light in weight, the total weight of a battery system can be reduced so as to enhance the cruising ability of equipment such as a vehicle configured with the battery system, the battery pack can be fixed and protected, meanwhile, the disassembly and assembly operation of connecting the battery pack to the battery frame is simplified, and the operation convenience of maintaining and replacing the battery pack is provided.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery frame, a battery system, and a vehicle. Background Art

[0002] New energy batteries are increasingly being used as power sources in various types of mechanical equipment, such as vehicles. Accordingly, the weight, protection, and ease of assembly and disassembly of the battery system on the equipment also need to be gradually improved. For pure electric vehicles, the required battery pack is large in size and needs to be fixed to the chassis through a connecting frame. The battery pack and the connecting frame are important components of the vehicle battery system. The current connecting frames usually include a skeleton and a wall panel wrapped around the skeleton. Some frames are also provided with multi-layer partitions for layering the battery packs. The connecting frame is complex in composition, heavy in weight, and the assembly operation is cumbersome, resulting in cumbersome operation for installing the battery pack on the connecting frame, and inconvenient for disassembly and assembly of the battery pack and subsequent maintenance and replacement of the battery pack. Utility Model Content

[0003] In view of this, the embodiments of the present application are committed to providing a battery frame with a simple structure and light weight, which can reduce the total weight of the battery system to enhance the endurance of equipment equipped with the battery system, such as vehicles. While being able to fix and protect the battery pack, it simplifies the disassembly and assembly of the battery pack to the battery frame, providing ease of operation for repairing and replacing the battery pack.

[0004] The present application provides a battery frame, comprising a support base and three fences located on the support base, wherein the three fences include a back fence located on one side of the support base and two side fences located on the other two sides of the support base and arranged opposite to each other;

[0005] The side of the battery frame opposite to the back rail is an open structure, so that the back rail and the side rails enclose a protective space with one side open on the support bottom plate.

[0006] In a possible implementation manner, the height of the side rails gradually increases as they gradually approach the back rail.

[0007] In a possible embodiment, the side rail includes at least two inclined plates that are arranged obliquely and spaced apart, one end of the inclined plate is connected to the supporting bottom plate, and the other end is connected to the back rail;

[0008] And / or, further comprising columns disposed on both sides of the opening of the battery frame, the columns being located at one end of the side rails close to the opening and connected to the support base plate or the side rails, for stopping the battery pack placed in the protective space;

[0009] And / or, the backrail includes a plurality of vertical panels arranged at intervals and used to be connected to the device body, and a horizontal panel connecting the vertical panels.

[0010] In a possible embodiment, the support base plate is provided with a plurality of connecting screw sleeves for fixing the battery pack and distributed along the circumference of the battery frame to be connected to the connecting screws passing through the battery pack.

[0011] The present application also provides a battery system, comprising a battery pack and a battery frame as described above, wherein the battery pack is connected to the battery frame.

[0012] In one possible embodiment, the battery frames are provided in two groups and are used to be arranged on both sides of the device body. The battery system further includes a connecting arm, the two ends of which are connected to the battery frames arranged on both sides of the device body.

[0013] The connecting arm includes a middle section, two inclined sections and two connecting ends. The middle section is concave relative to the connecting ends and is connected to the connecting ends through the inclined sections.

[0014] In one possible implementation, the battery pack includes a top cover plate and a plurality of battery cells;

[0015] The battery unit includes a box body and a battery cell module arranged in the box body, and the box body includes a box bottom plate and a circumferential side plate connected to the box bottom plate;

[0016] The plurality of battery cells are stacked and connected so that the bottom plate of the upper box of each two adjacent battery cells covers the top opening of the lower box;

[0017] The top cover plate covers the top opening of the box body of the uppermost battery unit.

[0018] In one possible embodiment, the box bottom plate is a liquid cooling plate, the bottom of the circumferential side plate is provided with an overlapping connection portion and encloses a hollow area, the box bottom plate is laid in the hollow area and connected to the overlapping connection portion; and / or, the circumferential side plate is an integrated structure.

[0019] In a possible embodiment, a connecting rod is further included, and the connecting rod sequentially passes through the top cover plate and each layer of the stacked box body and is connected to the supporting bottom plate.

[0020] The present invention also provides a vehicle, comprising a vehicle body, on which is provided a battery frame as described in any one of the above items or a battery system as described in any one of the above items.

[0021] The battery frame provided in this application has a simple structure and is lightweight, capable of reducing the overall weight of the battery system and enhancing the range of equipment equipped with the battery system, such as vehicles. Furthermore, the battery frame is easy to assemble and can be assembled before being assembled with the battery pack. One side of the battery frame is open, and the battery pack is inserted directly through the open side. The battery pack is then fastened to the battery frame by fastening to a support base plate and the like, and is protected by fences on three sides. While securing and protecting the battery pack, the battery frame also simplifies its assembly and disassembly, facilitating repair and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure shows a schematic diagram of the composition of the battery frame in the embodiment of the present application;

[0023] Figure 2 Shown is a schematic diagram of the battery frame connected to the vehicle body in an embodiment of the present application;

[0024] Figure 3 The figure shows a connection diagram of the battery pack and the battery frame in an embodiment of the present application;

[0025] Figure 4 The figure shows a schematic structural diagram of a battery system in an embodiment of the present application;

[0026] Figure 5 Shown is a schematic diagram of a battery system connected to a vehicle body in an embodiment of the present application;

[0027] Figure 6 Shown is a schematic diagram of the composition of the battery pack in an embodiment of the present application;

[0028] Figure 7 Shown is an overall schematic diagram of the battery pack in an embodiment of the present application;

[0029] Figure 8 Shown is a schematic diagram of a battery unit in an embodiment of the present application;

[0030] Figure 9 The figure shows a schematic structural diagram of the box body in the embodiment of the present application;

[0031] Figure 10 Shown is a schematic diagram of the setting of the sealing strip in an embodiment of the present application.

[0032] Figures 1-10 middle:

[0033] 1. Top cover plate; 2. Box body; 21. Circumferential side plate; 211. Lug block; 212. Raised edge plate; 213. Avoidance groove; 22. Box bottom plate; 214. Overlap connection; 24. Sealing strip; 3. Battery module; 4. Connecting rod; 5. Battery frame; 51. Support bottom plate; 511. Connecting screw sleeve; 52. Side rail; 53. Back rail; 531. Vertical plate; 532. Horizontal plate; 54. Column; 6. Connecting arm. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] Please refer to the attached Figures 1-10 The embodiment of the present application first provides a battery frame 5, which is used to fix the battery pack and is used to connect to the main body of the equipment, such as the vehicle body, so as to assemble the battery pack on the vehicle body. The battery frame 5 includes a support base 51 and three fences located on the support base 51. The three fences include a back fence 53 located on one side of the support base 51 and two side fences 52 arranged on the other two sides of the support base 51 and opposite to each other. There is no fence on the side of the support base 51 opposite to the back fence 53, that is, the side of the battery frame 5 opposite to the back fence 53 is an open structure. The back fence 53 and the side fence 52 enclose a protective space with one side open on the support base 51, similar to a U-shape.

[0036] With such a configuration, the battery frame 5 has a simple structure and is lightweight, which can reduce the total weight of the battery system to enhance the endurance of equipment equipped with the battery system, such as vehicles. At the same time, the battery frame 5 is easy to assemble and can be assembled before being assembled with the battery pack. The battery pack is directly inserted from the open position and then fastened to the support base plate 51 and the like to be fixed to the battery frame 5, while being protected by the three-sided fence of the battery frame 5. When disassembling the battery pack, the connection between the battery pack and the support base plate 51 is directly disconnected to repair or replace the battery pack. The disassembly and assembly is convenient, and it is also convenient to repair and replace the battery pack. It can be seen that the battery frame 5 provided in the present application can not only fix and protect the battery pack, but also simplify the disassembly and assembly of the battery pack, and also facilitate the repair and replacement of the battery pack.

[0037] In some embodiments, such as Figure 1As shown, the height of the side rails 52 gradually increases as they approach the back rail 53. Specifically, the side rails 52 can be trapezoidal or triangular in shape. For example, the side rails 52 include at least two inclined plates arranged at an angle and spaced apart, one end of each inclined plate connected to the support base 51 and the other end connected to the back rail 53. This ensures a stable and strong structure for the side rails 52 while minimizing the overall weight of the battery frame 5.

[0038] In some embodiments, the battery frame 5 is further provided with two upright posts 54 connected to the support base 51. The two upright posts 54 are arranged on either side of the opening of the battery frame 5 (on either side of the distribution direction of the two side rails 52) and are located at the end of the side rail 52 closer to the opening (the end of the side rail 52 closer to the opening in the extension direction of the side rail 52), such as the shorter end of the side rail 52. The upright posts 54 are connected to the support base 51 or the side rail 52 and are used to stop the battery pack placed in the protective space and connected to the support base 51.

[0039] The column 54 can be an L-shaped corner plate, which wraps around the side corner of the battery pack box on the open side to protect the battery pack from tipping over. Of course, the column 54 can also be a plate or a column, which is set at the open position and is used to abut against the side wall of the battery pack box facing the open position to stop the battery pack. The column 54 can be fixedly connected to the support base 51 or the side rail 52, for example, by welding, or it can be an integral structure, such as the column 54 and the inclined plate of the side rail 52 are an integral casting, and the battery pack can be placed in the protective space from the top of the battery frame 5. Alternatively, the column 54 can be detachably arranged, for example, connected to the support base 51 or the side rail 52 by fasteners, so that the battery pack can be placed in the protective space from the side opening of the battery frame 5. After the battery pack is connected to the battery frame 5, the column 54 can be connected. When the battery pack needs to be removed, the column 54 can be removed first, and then the battery pack can be removed.

[0040] The back rail 53 includes a plurality of vertical plates 531 arranged at intervals and used to connect to the device body, and a horizontal plate 532 connecting the vertical plates 531. In this way, the battery frame 5 is firmly connected to the device body at multiple points, stably supporting and fixing the battery pack.

[0041] The support base 51 is provided with a connecting structure for securing the battery pack. Once the battery pack is placed on the support base 51, it is secured by directly connecting to the connecting structure. Specifically, in some embodiments, the connecting structure includes a plurality of connecting screws 511 distributed along the circumference of the battery frame 5, which are used to connect to the connecting screws that pass through the battery pack. In this way, the battery pack can be secured to the support base 51 by simply passing the connecting screws through the battery pack and connecting to the connecting screws 511, making it convenient to operate and easy to assemble and disassemble.

[0042] The present application also provides a battery system comprising a battery pack and a battery frame 5. The battery frame 5 is the battery frame 5 described in any of the above embodiments, and the battery pack is connected to the battery frame 5. The battery frame 5 is used to secure the battery pack and is connected to a device, such as a vehicle, on which the battery pack is mounted, so that the battery pack can be assembled onto the device. This battery system also has the advantages of being lightweight and easy to disassemble and maintain the battery pack, which will not be further described here.

[0043] Batteries are typically placed on either side of the device body to balance the center of gravity. Therefore, the battery system includes two battery frames 5, each positioned on either side of the device body. The battery system also includes connecting arms 6, each end of which connects the battery frames 5 on either side of the device body. This enhances the overall stability of the battery frames 5.

[0044] Specifically, in some embodiments, the connecting arm 6 includes a central section, two inclined sections, and two connecting ends. The central section is recessed relative to the connecting ends and is connected to the connecting ends via the inclined sections. Thus, the connecting arm 6 resembles an "X" shape, which helps avoid other components on the device body and facilitates traversal of the device body.

[0045] In some embodiments, the battery pack provided in this application is not an ordinary standard pack (universal standard battery pack), but is Figure 3 and Figure 6 As shown, the battery pack includes a top cover plate 1 and multiple battery cells; the battery cells include a case 2 and a cell module disposed within the case 2; the case 2 includes a bottom plate 22 and a circumferential side plate 21 connected to the bottom plate 22; the circumferential side plate 21 surrounds the cell module along the circumference of the cell module. Simultaneously, the multiple battery cells are stacked and connected, i.e., multiple layers of cases 2 are stacked and connected to each other in sequence, so that the bottom plate 22 of the upper case 2 of each adjacent two battery cells covers the top opening of the lower case 2, i.e., the bottom plate 22 of the upper case 2 is equivalent to the top plate of the lower case 2; and the top cover plate 1 is connected to the topmost case 2, covering the top opening of the topmost case 2. This arrangement allows the battery modules 3 to be stacked in layers, with each layer of battery modules 3 having its own dedicated enclosure 2 that fully encloses it. This provides high protection for the battery modules 3 and, overall, a stable and strong battery pack wall structure, significantly improving impact resistance, corrosion resistance, dust and water resistance, and other properties. Furthermore, the stacked multiple layers of enclosures 2, with each adjacent layer of battery modules 3 sharing a common enclosure bottom plate 22, enhances protection while streamlining the structure and reducing the overall weight of the battery pack.

[0046] The battery pack provided in the present application is used in combination with the above-mentioned battery frame 5. Compared with the standard pack and the battery frame 5 with wall panels in the prior art, the overall structure is simple and light in weight without reducing the protection of the battery module. It can also be said that it is equivalent to integrating the wall panels on the battery frame 5 in the prior art into the battery pack and simplifying the structure and improving the integration through structural simplification (compared with the standard pack and the battery frame 5 with wall panels in the prior art, the entire battery system has only one layer of box wall), reducing the total weight, and facilitating its application in vehicles to improve the endurance of electric vehicles. At the same time, it also simplifies the disassembly and assembly of the battery system, simplifies the operation of assembling the battery pack on the battery frame 5, and simplifies the assembly operation of the battery frame 5, and facilitates disassembly and assembly and subsequent maintenance.

[0047] Multiple layers of battery cells are stacked in sequence, and each layer of casing 2 can be connected to each other in pairs. Alternatively, in some embodiments, the battery pack further includes a connecting rod 4. Each casing 2 is provided with a first connection hole for the connecting rod 4 to pass through. The connecting rod 4 sequentially passes through each layer of the stacked casing 2 to connect the battery cells together. In this way, the structure can be further streamlined and assembly and disassembly operations can be simplified: after each layer of battery cells is stacked, all the battery cells are directly connected through the connecting rod 4, which can be a screw. The entire battery pack can then be assembled by tightening the ends of the connecting rod 4. When the battery module 3 needs to be repaired or replaced, the battery module 3 can be disassembled by simply pulling out the connecting rod 4. The operation is very simple.

[0048] Furthermore, the top cover plate 1 is provided with a second connection hole for the connecting rod 4 to pass through. The connecting rod 4 connects the top cover plate 1 and each layer of the box body 2 in series. In addition, the supporting base plate 51 of the battery frame 5 is provided with a connection structure connected to the connecting rod 4. The connecting rod 4 sequentially passes through the top cover plate 1 and each layer of the stacked box body 2 and connects to the supporting base plate 51, thus completing the assembly of each battery cell and the assembly and fixation of the battery pack to the battery frame 5. By loosening the connection between the connecting rod 4 and the supporting base plate 51 and removing the connecting rod 4, the battery modules 3 of each layer can be disassembled, allowing direct repair and replacement of any battery module 3 on any layer. This is very simple to operate, further streamlining the structure and simplifying assembly and disassembly operations.

[0049] As described above, the connecting structure on the support base plate 51 can be a connecting screw 511, and the connecting rod 4 can be a connecting screw. The connecting rods and connecting screws 511 are arranged one-to-one and distributed along the circumference of the battery pack. In this way, the connecting rod 4 passes through the top cover plate 1 and each layer of the box body 2 and is directly screwed into the connecting screw 511 on the support base plate 51 for fastening and removal.

[0050] In some embodiments, the box bottom plate 22 is a liquid cooling plate. In this way, the box body 2 does not need to be additionally provided with a box bottom plate support plate. The liquid cooling plate is used as the box bottom plate 22, which can not only protect the battery module 3, but also effectively cool the battery module 3. Moreover, since the top and bottom of each layer of battery module 3 are paved with the box bottom plate 22, and the liquid cooling plate is directly used as the box bottom plate 22, or the box bottom plate 22 is directly set as the liquid cooling plate, each layer of battery module 3 can be in contact with two layers of liquid cooling plates, and the top and bottom are in contact with the liquid cooling plate for heat exchange, and the cooling effect is significant.

[0051] The box bottom plate 22 can specifically include a first plate body and a second plate body, and a flow channel structure is provided on either the first plate body and the second plate body, that is, a recessed portion extending on the plate body, and the first plate body and the second plate body are snap-fitted and connected so that the recessed portion forms a flow channel for the coolant to flow through.

[0052] The circumferential side panels 21 can be an integral structure, i.e., a one-piece construction, such as a casting. This not only enhances the structural strength of the circumferential side panels 21 and the housing 2 as a whole, but also eliminates the need for assembly, further simplifying assembly and disassembly of the battery pack and making it easier to repair and replace the battery modules 3. It also enhances the sealing and waterproofing properties of the housing 2.

[0053] like Figure 9 As shown, the bottom of the circumferential side panel 21 is provided with an overlapping connection portion 214 and encloses a hollow area, and the box bottom plate 22 is laid in the hollow area and connected to the overlapping connection portion 214. The box bottom plate 22 can be connected to the overlapping connection portion 214 by fasteners, or it can be welded to the overlapping connection portion 214. The overlapping connection portion 214 includes an inner convex edge located at the bottom of the circumferential side panel 21, and a connecting plate body connecting two opposite side panels in the circumferential side panel 21. The connecting plate body divides the bottom of the space enclosed by the circumferential side panel 21 into two hollow areas. The box bottom plate 22 includes two separately arranged liquid cooling plates, and the two liquid cooling plates are respectively laid in the two hollow areas and connected to the connecting plate body and other inner convex edges. The two sides of the connecting plate body in the width direction are used to connect to the liquid cooling plates, and there is a wiring groove in the middle.

[0054] In order to enhance the structural strength of the box body 2, reinforcing ribs may be provided on the circumferential side panels 21 and the box bottom panel 22. In some embodiments provided in the present application, lug blocks 211 may be provided on the circumferential side panels 21, such as Figure 8As shown, the circumferential side plate 21 includes a plate body and a lug block 211 protruding from the plate body, and a first connecting hole for the connecting rod 4 to pass through is provided on the lug block 211; the lug block 211 is equivalent to a reinforcing block, which can not only enhance the structural strength of the box body 2, but also provide the first connecting hole on the lug block 211, which can also enhance the connection strength between the box bodies 2 and the overall fastening strength of the battery pack; at the same time, when the battery cells are stacked and aligned, the support stability of the upper battery cells can be enhanced.

[0055] like Figure 8 As shown, the bottom of the circumferential side plate 21 is connected to the bottom plate 22, and a convex plate 212 can be provided on the top. The convex plate 212 protrudes from the plate body of the circumferential side plate 21 and can be distributed at intervals along the circumference of the circumferential side plate 21, or can be provided along the entire circumference of the circumferential side plate 21. This can enhance the stacking alignment with the upper box 2 and provide more stable support for the upper battery cells.

[0056] Alternatively, in some embodiments, the top of the circumferential side plate 21 of the box body 2 may be provided with a positioning docking structure that is connected to the box bottom plate 22 of any other box body 2. In this way, the alignment of the stacked battery cells can be enhanced, and the assembly quality and convenience can be enhanced. The positioning docking structure may specifically include an annular protrusion provided on the box bottom plate 22, which is used to be inserted into the space inside the box or the annular protrusion forms a groove for the circumferential side plate 21 to be docked and inserted, and the side wall of the annular protrusion facing the circumferential side plate 21 is used to abut against the side plate of the circumferential side plate 21; or, the positioning docking structure may specifically include a docking groove provided on one of the box bottom plate 22 and the circumferential side plate 21, and a docking protrusion provided on the other and used to be inserted into the annular groove, and the docking protrusions are provided along the entire circumference of the annular side plate or are arranged at intervals.

[0057] If the battery pack is used in a vehicle, since it is installed on the vehicle chassis, there will be certain requirements for waterproofness.

[0058] Specifically, when the box bottom plate 22 and the circumferential side plate 21 are sealed and connected, such as the box bottom plate 22 and the circumferential side plate 21 are an integrated structure or welded or sealed and connected by setting a seal, the top cover plate 1 and the topmost box body 2 are sealed and connected by a seal, and a sealing structure such as a sealing strip 24 is set between each two adjacent stacked boxes 2, it can effectively enhance the sealing of the box body 2, improve the water-proof protection of the battery module 3, and improve the waterproof performance of the battery pack.

[0059] like Figure 10As shown, the top surface of the circumferential side panel 21 is provided with a sealing strip 24 extending circumferentially along the circumferential side panel 21. The sealing strip 24 is squeezed to form a seal between each adjacent stacked box 2. After the top cover 1 is fastened to the topmost box 2, it is also squeezed to form a seal with the box 2. This arrangement ensures that each box 2 has the same structure. During battery pack assembly, the battery modules 3 and box 2 can be matched arbitrarily, and any box 2 can be placed on the top layer, simplifying production and assembly operations.

[0060] Of course, the sealing strip 24 can also be located on the bottom end surface of the box bottom plate 22, such as in the area of ​​the bottom end surface of the box bottom plate 22 that abuts the top end surface of the circumferential side plate 21. Or, when the box bottom plate 22 is provided with an annular protrusion for inserting into the space inside the box, the sealing strip 24 can be located on the side wall of the annular protrusion and used to abut against the side wall of the circumferential side plate 21. Or, when an annular groove is provided on one of the box bottom plate 22 and the circumferential side plate 21, and an annular protrusion for inserting into the annular groove is provided on the other, the sealing strip 24 can be provided in the annular groove and used to abut against the annular protrusion. In these cases, the inner plate surface of the top cover plate 1 facing the battery module 3 also needs to be provided with a sealing strip 24 for sealingly connecting with the topmost box body 2. In this way, on the basis of being able to effectively seal, the structures of each box body 2 can also be made consistent.

[0061] In some embodiments, a portion of the circumferential side panel 21 is recessed toward the battery module 3 to form a relief groove 213 on the outer wall of the housing 2. The relief groove 213 has a groove wall, such as a side wall, provided with a threading hole for connecting the battery module 3. With this arrangement, the relief groove 213 can accommodate portions of wiring connecting the battery module 3 located outside the housing 2, such as connectors, thereby protecting the wiring outside the housing 2. The relief groove 213 also provides space for wiring connection operations. For example, after placing each layer of the housing 2 units on the battery frame, the relief groove 213 facilitates wiring connection operations between the battery modules 3 outside the housing 2.

[0062] The embodiments of the present application further provide a vehicle, including a vehicle body, on which is disposed a battery frame as described in any one of the above items or a battery system as described in any one of the above items. The vehicle has the structure and beneficial effects described in the above embodiments, which will not be repeated here.

[0063] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0064] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the accompanying drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, or configured in any manner. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0065] It should also be noted that in the device of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as equivalent solutions of the present application.

[0066] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0067] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

[0068] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery frame, characterized in that: It includes a support base and three fences located on the support base, wherein the three fences include a back fence located on one side of the support base and two side fences located on the other two sides of the support base and arranged opposite to each other; The side of the battery frame opposite to the back rail is an open structure, so that the back rail and the side rails enclose a protective space with one side open on the support bottom plate.

2. The battery frame according to claim 1, wherein: The height of the side rails gradually increases as the side rails approach the back rail.

3. The battery frame according to claim 1 or 2, characterized in that: The side rail comprises at least two inclined plates arranged obliquely and spaced apart, one end of the inclined plate being connected to the supporting bottom plate and the other end being connected to the back rail; And / or, further comprising columns disposed on both sides of the opening of the battery frame, the columns being located at one end of the side rails close to the opening and connected to the support base plate or the side rails, for stopping the battery pack placed in the protective space; And / or, the backrail includes a plurality of vertical panels arranged at intervals and used to be connected to the device body, and a horizontal panel connecting the vertical panels.

4. The battery frame according to claim 1, wherein: The support base plate is provided with a plurality of connecting screw sleeves for fixing the battery pack and distributed along the circumference of the battery frame to be connected to the connecting screws passing through the battery pack.

5. A battery system, characterized in that: The invention comprises a battery pack and the battery frame according to any one of claims 1 to 4, wherein the battery pack is connected to the battery frame.

6. The battery system according to claim 5, wherein: The battery frames are provided in two groups and are used to be arranged on both sides of the device body. The battery system further includes a connecting arm, both ends of which are connected to the battery frames arranged on both sides of the device body. The connecting arm includes a middle section, two inclined sections and two connecting ends. The middle section is concave relative to the connecting ends and is connected to the connecting ends through the inclined sections.

7. The battery system according to claim 5, wherein: The battery pack includes a top cover plate and a plurality of battery cells; The battery unit includes a box body and a battery cell module arranged in the box body, and the box body includes a box bottom plate and a circumferential side plate connected to the box bottom plate; The plurality of battery cells are stacked and connected so that the bottom plate of the upper box of each two adjacent battery cells covers the top opening of the lower box; The top cover plate covers the top opening of the box body of the uppermost battery unit.

8. The battery system according to claim 7, wherein: The box bottom plate is a liquid cooling plate, the bottom of the circumferential side plate is provided with an overlapping connection portion and encloses a hollow area, the box bottom plate is laid in the hollow area and connected to the overlapping connection portion; and / or, the circumferential side plate is an integrated structure.

9. The battery system according to claim 7, wherein: It also includes a connecting rod, which sequentially passes through the top cover plate and each layer of the stacked box body and is connected to the supporting bottom plate.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body on which is arranged the battery frame according to any one of claims 1 to 4 or the battery system according to any one of claims 5 to 9.

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