Battery pack and vehicle

Abstract

The present invention provides a battery pack and a vehicle, the battery pack comprising: a lower battery pack; a tray, the tray comprising a tray bottom plate and side beams, the side beams being used to support the tray bottom plate, the lower battery pack being arranged on the tray bottom plate so that the tray bottom plate supports the lower battery pack; a fixed block, the fixed block being arranged in the tray and fixed to the side beams; a support block and an upper battery pack, the support block being detachably arranged on the fixed block so that the fixed block supports the support block, and the support block being used to install and support the upper battery pack. The battery pack disclosed in the present invention can enable the upper battery pack to be firmly installed on the tray, thereby effectively improving the stability and safety of the battery pack, and avoiding safety accidents caused by failure of the battery pack, and by arranging the support block on the fixed block, the weight of the upper battery pack and the support block acts on the fixed block, avoiding the gravity of the upper battery pack and the support block from acting on the tray bottom plate, thereby reducing the risk of deformation of the tray bottom plate.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a battery pack and a vehicle having the battery pack. Background Art

[0002] In the related art, the battery pack includes a tray, an upper battery pack and a lower battery pack, and the tray is used to support and fix the upper battery pack and the lower battery pack in sequence. Usually, the upper battery pack is stacked on top of the lower battery pack, and the upper battery pack is directly fixed to the tray by long bolts. The weight of the upper battery pack directly acts on the tray bottom plate of the tray, which easily causes the tray bottom plate of the tray to deform. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a battery pack that can firmly mount an upper battery pack on a pallet, and the weight of the upper battery pack and the support block acts on the fixed block, thereby preventing the gravity of the upper battery pack and the support block from acting on the bottom plate of the pallet, and reducing the risk of deformation of the bottom plate of the pallet.

[0004] Another object of the present invention is to provide a vehicle.

[0005] The battery pack according to the present invention includes:

[0006] Lower battery pack;

[0007] A tray, the tray comprising a tray bottom plate and side beams, the side beams being used to support the tray bottom plate, the tray bottom plate defining a placement slot for placing the lower battery pack;

[0008] A fixing block, wherein a receiving space is defined between the bottom plate of the tray and the side beam, and the fixing block is at least partially disposed in the receiving space and fixed on the side beam;

[0009] A support block and an upper battery pack, wherein the upper battery pack is located above the lower battery pack, the support block is fixed and supported on the fixing block, and the support block is used to install and support the upper battery pack.

[0010] According to the battery pack of the embodiment of the present invention, a fixing block is provided, and the supporting block is arranged on the fixing block. The weight of the upper battery pack and the supporting block acts on the fixing block, thereby preventing the gravity of the upper battery pack and the supporting block from acting on the bottom plate of the tray. In addition, the strength of the tray can be effectively improved so that the tray can stably support and fix the lower battery pack and the upper battery pack.

[0011] In some examples of the present invention, the lower end of the side beam has a supporting portion extending toward the inner side of the side beam and used to support the pallet bottom plate, the pallet bottom plate includes a bottom plate bottom wall, a bottom plate side wall and a bottom plate top wall, the bottom plate side wall is connected between the bottom plate bottom wall and the bottom plate top wall, the bottom plate side wall and the bottom plate bottom wall jointly define the placement groove, the bottom plate top wall overlaps the upper surface of the side beam, the bottom plate bottom wall is supported by the supporting portion, and the side beam, the bottom plate side wall and the bottom plate top wall jointly define the accommodating space.

[0012] In some examples of the present invention, the fixed block and / or the supporting block is provided with a supporting boss, the tray bottom plate has an avoidance hole for avoiding the supporting boss, and the supporting boss passes through the avoidance hole and is supported between the fixed block and the supporting block.

[0013] In some examples of the present invention, a sealing structure is provided between the supporting boss and the avoidance hole; and / or

[0014] A sealing structure is provided between the tray bottom plate and the side beam, and the sealing structure is arranged around the avoidance hole.

[0015] In some examples of the present invention, an upper surface of the fixing block is flush with an upper surface of the side beam.

[0016] In some examples of the present invention, the lower surface of the fixing block abuts against the side beam so that the side beam supports the fixing block.

[0017] In some examples of the present invention, the fixing blocks are all arranged in the accommodating space, and the side surface of the fixing blocks opposite to the tray bottom plate has a first supporting slope, the first supporting slope is opposite to and spaced from the tray bottom plate, and in the direction from the upper end to the lower end of the battery pack, the first supporting slope is inclined toward the direction close to the placement groove.

[0018] In some examples of the present invention, the fixed blocks are all arranged in the accommodating space, the side surface of the fixed block opposite to the side beam has a second supporting slope, the surface of the side beam opposite to the second supporting slope has a third supporting slope, the second supporting slope and the third supporting slope are fitted together, and from the upper end to the lower end of the battery pack, the second supporting slope and the third supporting slope are both inclined in a direction close to the placement groove.

[0019] In some examples of the present invention, the battery pack further includes: a first fastener, wherein the first fastener is used to detachably mount the upper battery pack on the support block.

[0020] In some examples of the present invention, the battery pack further includes: a second fastener, wherein the second fastener is used to detachably mount the support block on the fixing block.

[0021] In some examples of the present invention, the second fastener passes through the supporting block and is connected to the fixing block.

[0022] In some examples of the present invention, there are multiple second fasteners and multiple fixing blocks, and each fixing block is assembled with at least one second fastener.

[0023] The vehicle proposed according to the present invention includes the battery pack described above.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is an exploded schematic diagram of a battery pack according to an embodiment of the present invention;

[0027] Figure 2 is a first cross-sectional schematic diagram of a battery pack according to an embodiment of the present invention;

[0028] Figure 3 is a second cross-sectional schematic diagram of a battery pack according to an embodiment of the present invention;

[0029] Figure 4 for Figure 3 A local enlarged schematic diagram of the position A in the middle;

[0030] Figure 5 Schematic diagram of the structure of a fixing block in a battery pack according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 10-battery pack; 11-upper battery pack; 12-lower battery pack;

[0033] 100-pallet;

[0034] 110-tray bottom plate; 111-placement groove; 112-avoidance hole; 113-fourth supporting inclined plane; 114-bottom wall of bottom plate; 115-side wall of bottom plate; 116-top wall of bottom plate

[0035] 120-side beam; 121-cavity; 122-connecting plate; 123-sub-cavity; 124-supporting part;

[0036] 200-fixed block;

[0037] 210-support boss;

[0038] 220-first supporting inclined plane; 230-second supporting inclined plane; 240-third supporting inclined plane;

[0039] 250-Mounting hole;

[0040] 300-support block;

[0041] 310-threaded hole;

[0042] 320-through hole;

[0043] 400-first fastener;

[0044] 500-second fastener;

[0045] 600-accommodation space. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] The terms "first", "second", "third" (if any) in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein, for example.

[0050] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or service tool that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or service tool.

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] Figure 1 is an exploded schematic diagram of a battery pack 10 according to an embodiment of the present invention, Figure 2 is a first cross-sectional schematic diagram of a battery pack 10 according to an embodiment of the present invention, Figure 3 is a second cross-sectional schematic diagram of a battery pack 10 according to an embodiment of the present invention, Figure 4 for Figure 3 A partial enlarged schematic diagram of the position A in the middle. Figure 5 Schematic diagram of the structure of the fixing block 200 in the battery pack 10 according to an embodiment of the present invention.

[0053] like Figure 1-Figure 5As shown, the battery pack 10 according to the embodiment of the present invention includes: a lower battery pack 12; a tray 100, the lower battery pack 12 is arranged on the tray 100 so that the tray 100 supports the lower battery pack 12, the tray 100 includes a tray bottom plate 110 and a side beam 120, the side beam 120 is arranged below the tray bottom plate 110, the side beam 120 is used to support the tray bottom plate 110, the lower battery pack 12 is arranged on the tray bottom plate 110 so that the tray bottom plate 110 supports the lower battery pack 12, and the tray bottom plate 110 defines a placement groove 111 for placing the lower battery pack 12; a fixing block 200, the fixing block 200 is arranged on the tray 1 00 and fixed to the side beam 120 of the tray 100, a accommodating space 600 is defined between the tray bottom plate 110 and the side beam 120, the fixing block 200 is at least partially arranged in the accommodating space 600, and the fixing block 200 is fixed on the side beam 120; the support block 300 and the upper battery pack 11, the upper battery pack 11 is located above the lower battery pack 12, the support block 300 is fixed and supported on the fixing block 200, further, the support block 300 is detachably arranged on the fixing block 200 so that the fixing block 200 supports the support block 300, and the support block 300 is used to install and support the upper battery pack 11 of the battery pack 10.

[0054] Specifically, the tray 100 may be a rectangular structure. When the battery pack 10 is installed on the vehicle, the length direction of the tray 100 may be parallel to the length direction of the vehicle, and the width direction of the tray 100 may be parallel to the width direction of the vehicle; or, the length direction of the tray 100 may be parallel to the width direction of the vehicle, and the width direction of the tray 100 may be parallel to the length direction of the vehicle. Figure 1 In the direction indicated by X, the width direction of the tray 100 can be Figure 1 The direction pointed by Y.

[0055] The battery pack 10 can be used to provide electric energy for the vehicle. The battery pack 10 can be composed of a lower battery pack 12 and a plurality of upper battery packs 11. The upper battery pack 11 can be composed of a plurality of single cells. The lower battery pack 12 can be composed of at least one single cell. The shapes of the lower battery pack 12 and the tray bottom plate 110 can match each other. One side surface of the lower battery pack 12 can be fitted and installed inside the tray bottom plate 110 of the tray 100. The upper battery pack 11 can be installed on the other side surface of the lower battery pack 12 away from the tray 100. Along the height direction of the battery pack 10, the projection of the upper battery pack 11 and the projection of the lower battery pack 12 are both located inside the tray 100. The height direction of the battery pack 10 can be Figure 1 The direction that Z points to.

[0056] Please continue to see Figure 2As shown, the number of the fixing blocks 200 can be multiple, and the multiple fixing blocks 200 can be arranged at intervals along the length direction of the pallet 100, and the multiple fixing blocks 200 can also be arranged at intervals along the width direction of the pallet 100. The fixing block 200 can be set at the edge of the pallet 100, and the fixing block 200 can be fixedly connected to the pallet 100. The specific connection method can be welding, riveting or threaded connection, which is not specifically limited in the embodiment of the present invention. Such a setting can effectively improve the connection strength between the fixing block 200 and the pallet 100.

[0057] Please continue to see Figure 1-Figure 4 As shown, the support block 300 can be a rectangular structure, and the number of the support blocks 300 can be multiple. This is not specifically limited in the embodiments of the present invention. The following embodiments are explained by taking two support blocks 300 as an example. Along the width direction of the tray 100, the two support blocks 300 can be respectively arranged close to the opposite sides of the tray 100. The length direction of the support block 300 can be parallel to the length direction of the tray 100, and the width direction of the support block 300 can be parallel to the height direction of the battery pack 10. The support block 300 is connected to the fixed block 200 accordingly, for example: the support block 300 and the fixed block 200 can be fixedly connected together, and the specific connection method can be a threaded connection. This is arranged so that the fixed block 200 can support and connect the support block 300. The other side edge of the support block 300 away from the tray 100 can be arranged opposite to the upper battery pack 11. The upper battery pack 11 and the support block 300 can be fixedly connected together, and the specific connection method can be a threaded connection. This configuration allows the tray 100 to be supported and connected to the upper battery pack 11 through the support block 300, and then can be combined to form a battery pack 10.

[0058] According to the battery pack 10 of the embodiment of the present invention, by providing a fixing block 200, the fixing block 200 can be fixedly connected to the side beam 120 of the tray 100 as a whole, which can effectively improve the strength of the tray 100, so that the tray 100 can more stably support and fix the upper battery pack 11 and the lower battery pack 12. By providing a support block 300, and connecting one side edge of the support block 300 to the fixing block 200 by threading, or welding the support block 300 to the fixing block 200, and connecting the upper battery pack 11 to the support block 300, the upper battery pack 11 can be more firmly installed on the tray 100, thereby effectively improving the stability and safety of the battery pack 10, and avoiding safety accidents caused by malfunctions of the battery pack 10. In addition, the support block 300 is provided on the fixing block 200, and the upper battery pack 11 is fixedly connected to the upper battery pack 11. The weight of the upper battery pack 11 and the support block 300 acts on the fixed block 200 and the side beam 120, preventing the gravity of the upper battery pack 11 and the support block 300 from acting on the tray bottom plate 110, reducing the risk of deformation of the tray bottom plate 110. At the same time, by setting the fixed block 200 in the tray 100, when the battery pack 10 is hit sideways, the fixed block 200 can withstand the impact force, reducing the risk of deformation of the tray 100, and can protect the lower battery pack 12 and the upper battery pack 11, thereby improving the safety of the battery pack 10. In addition, the upper battery pack 11 can be installed on the support block 300 using short bolts, avoiding the use of long bolts to install the upper battery pack 11 on the support block 300 to cause excessive shear force, thereby further improving the safety of the battery pack 10.

[0059] Please continue to see Figure 1 , Figure 4 as well as Figure 5 As shown, in some embodiments of the present invention, the tray bottom plate 110 defines a placement slot 111 for placing the lower battery pack 12. A plurality of side beams 120 are connected to define an installation space (not shown in the figure), the tray bottom plate 110 is installed in the installation space, and a storage space (not shown in the figure) is defined between the tray bottom plate 110 and the side beams 120, and the fixing block 200 is disposed in the storage space. Further, as Figure 4As shown, the lower end of the side beam 120 has a support portion 124 extending toward the inner side of the side beam 120 and used to support the tray bottom plate 110. The support portion 124 protrudes from the side beam 120. The inner side of the side beam 120 refers to the side of the side beam 120 close to the installation space. The tray bottom plate 110 includes a bottom plate bottom wall 114, a bottom plate side wall 115 and a bottom plate top wall 116. The bottom plate side wall 115 is connected between the bottom plate bottom wall 114 and the bottom plate top wall 116. The bottom plate side wall 115 and the bottom plate bottom wall 114 jointly define a placement groove 111. The bottom plate top wall 116 overlaps the upper surface of the side beam 120. The bottom plate bottom wall 114 is supported by the support portion 124. The side beam 120, the bottom plate side wall 115 and the bottom plate top wall 116 jointly define a storage space 600, thereby achieving the effect of defining the storage space 600.

[0060] In some embodiments of the present invention, the fixed block 200 and / or the supporting block 300 are provided with a supporting boss 210, and the supporting boss 210 is supported between the fixed block 200 and the supporting block 300. It should be noted that only the fixed block 200 may be provided with the supporting boss 210, in which case the supporting boss 210 protrudes from the upper surface of the tray bottom plate 110 to support the supporting block 300. Alternatively, only the supporting block 300 may be provided with the supporting boss 210, in which case the fixed block 200 may be completely located below the tray bottom plate 110, the supporting boss 210 on the supporting block 300 passes through the tray bottom plate 110 and is connected to the fixed block 200, and the supporting boss 210 on the supporting block 300 is supported by the fixed block 200. The fixed block 200 and the supporting block 300 may also be provided with supporting bosses 210 at the same time. In this case, the supporting bosses 210 on the fixed block 200 pass through the tray bottom plate 110 to support the supporting block 300 , and the supporting bosses 210 on the supporting block 300 pass through the tray bottom plate 110 to support the fixed block 200 .

[0061] Specifically, the present application takes the example of the fixed block 200 provided with the support boss 210 as an example. The tray bottom plate 110 can be used to install and support the lower battery pack 12. The tray bottom plate 110 has a placement groove 111 and an open end (not shown in the figure) connected to the placement groove 111. The shape and size of the placement groove 111 and the lower battery pack 12 can match each other. The lower battery pack 12 can be installed in the placement groove 111 through the open end. Among them, the upper end of the support boss 210 protrudes from the upper surface of the tray bottom plate 110, and the support boss 210 supports the support block 300. The force-bearing position is on the fixed block 200, so as to avoid the tray bottom plate 110 from being subjected to pressure and prevent the tray bottom plate 110 from being deformed.

[0062] Furthermore, the tray bottom plate 110 can be made of a material with low strength and thin thickness, the tray bottom plate 110 can be set as an insulating part, the tray bottom plate 110 can be set as a non-metallic part, and the tray bottom plate 110 made of a lightweight insulating composite material can be used. For example, the lightweight insulating composite material can be made of resin and glass fiber, and the resin can be epoxy resin or polyurethane, but the embodiment of the present invention is not limited to this. The lightweight composite material can also be made of other composite materials that play the same role as resin and glass fiber. Such a setting can reduce the weight of the tray bottom plate 110, which is beneficial to the lightweight design of the tray 100 and the battery pack 10. In addition, the existing tray bottom plate 110 is made of aluminum material. The present application uses an insulating composite material to make the tray bottom plate 110, which can reduce the production cost of the tray bottom plate 110, which is beneficial to reducing the production cost of the tray 100 and the battery pack 10.

[0063] It should be noted that the tray bottom plate 110 made of non-metallic materials has excellent electrical insulation performance. When a serious vehicle grounding accident occurs, the battery pack 10 will not have high voltage risks such as arcing. The tray bottom plate 110 can be constructed as an integrally formed part. The tray bottom plate 110 can be molded using a lightweight insulating composite material. During the molding process, the tray bottom plate 110 forms good air tightness after the resin melts and flows and solidifies. At the same time, the mold molding can ensure that the tray bottom plate 110 has good flatness and dimensional accuracy, and ensure the sealing function of the tray bottom plate 110.

[0064] Furthermore, the pallet bottom plate 110 is fixedly installed in the installation space enclosed by a plurality of side beams 120. The pallet bottom plate 110 can be bonded to the side beams 120, or the pallet bottom plate 110 can be installed to the side beams 120 by bolts. The embodiment of the present invention does not specifically limit this, and the user can make a choice according to actual needs. The side beams 120 can be formed by metal welding. After welding, it is only necessary to ensure the strength of the welding structure and the necessary product flatness. The welding efficiency is high, which improves the production efficiency of the pallet 100. The side beams 120 can be made of aluminum material, or made of steel material, but the present invention is not limited thereto. The side beams 120 can also be made of other metal materials that play the same role as steel materials. Preferably, the side beams 120 can be formed by rolling steel materials, or extruding steel materials. Among them, by setting the side beams 120 as metal parts, the load-bearing capacity of the side beams 120 can be improved.

[0065] Furthermore, the extension direction of the accommodation space 600 can be parallel to the length direction of the tray 100. The shapes and sizes of the accommodation space 600 and the fixing block 200 can match each other, and the fixing block 200 can be fixedly arranged in the accommodation space 600, so that the fixing block 200 and the tray 100 are fixedly connected as one.

[0066] Please continue to see the picture Figure 4 , Figure 5 As shown, further, the support boss 210 and the fixing block 200 can be integrally formed. Along the height direction of the battery pack 10, the support boss 210 can penetrate the bottom plate top wall 116 of the tray bottom plate 110, and the support boss 210 can abut against the support block 300. The support boss 210 can be used to support and connect the support block 300, so that the support block 300 is fixedly connected to the fixing block 200.

[0067] In some embodiments of the present invention, an adhesive (such as structural adhesive) is applied between the tray bottom plate 110 and the side beam 120 to bond the side beam 120 to the tray bottom plate 110, and the thickness of the adhesive is controlled to absorb the dimensional tolerance of the side beam 120. At the same time, the tray bottom plate 110 has a good flatness, and the characteristic of the adhesive that can absorb the tolerance is used to reduce the manufacturing requirements for the tray bottom plate 110 and the side beam 120. In addition, when the existing tray bottom plate and the side beam are welded, the tray bottom plate is easily deformed during the welding process, which increases the size requirements for the battery module in the subsequent battery pack assembly process, affecting the assembly efficiency of the battery pack. In this embodiment, by bonding the tray bottom plate 110 and the side beam 120, the tray bottom plate 110 and the side beam 120 are avoided from being welded, which can prevent the deformation of the tray bottom plate 110, reduce the size requirements for the upper battery module 11 and the lower battery pack 12 in the subsequent battery pack 10 assembly process, and improve the assembly efficiency of the battery pack 10.

[0068] Please continue to see Figure 1 and Figure 4 As shown, in some embodiments of the present invention, the tray bottom plate 110 has an avoidance hole 112 for avoiding the support boss 210 . Further, the bottom plate top wall 116 of the tray bottom plate 110 has the avoidance hole 112 , and the support boss 210 passes through the avoidance hole 112 .

[0069] Specifically, the avoidance hole 112 can be arranged opposite to the support boss 210, and the shape of the avoidance hole 112 can match the shape of the support boss 210. For example, the shapes of the avoidance hole 112 and the support boss 210 can both be circular. The inner diameter of the avoidance hole 112 can be slightly larger than the outer diameter of the support boss 210, and the avoidance hole 112 can be connected to the accommodating space 600. In this way, the support boss 210 can extend from the avoidance hole 112 and abut against the support block 300 to support the support block 300.

[0070] In some embodiments of the present invention, a sealing structure may be provided between the support boss 210 and the avoidance hole 112, and / or a sealing structure may be provided between the tray bottom plate 110 and the side beam 120, and the sealing structure is provided around the avoidance hole 112. That is to say, a sealing structure is provided between the support boss 210 and the avoidance hole 112, or a sealing structure is provided between the tray bottom plate 110 and the side beam 120, or a sealing structure is provided between the support boss 210 and the avoidance hole 112, and between the tray bottom plate 110 and the side beam 120. The sealing structure may be a sealing structural member such as a sealant or a sealing ring, and the sealing structure between the support boss 210 and the avoidance hole 112 may seal the gap between the support boss 210 and the avoidance hole 112, thereby improving the sealing between the support boss 210 and the tray 100, and preventing liquid (e.g., water) and dust from entering the battery pack 10. The sealing structure between the tray bottom plate 110 and the side beam 120 is arranged around the avoidance hole 112 in the circumferential direction of the avoidance hole 112 to achieve sealing between the support boss 210 and the avoidance hole 112, improve the sealing between the support boss 210 and the tray 100, and prevent liquid (for example: water) and dust from entering the battery pack 10.

[0071] In some embodiments of the present invention, Figure 4 As shown, the upper surface of the fixing block 200 is flush with the upper surface of the side beam 120. The edge of the pallet bottom plate 110 is provided with a flange structure (i.e., the bottom plate top wall 116), which is located above the side beam 120. By making the upper surface of the fixing block 200 flush with the upper surface of the side beam 120, after the pallet bottom plate 110 is installed in the installation space of the side beam 120, the bottom plate top wall 116 can be evenly arranged above the side beam 120, which is convenient for installing the pallet bottom plate 110 on the side beam 120.

[0072] In some embodiments of the present invention, Figure 4 As shown, the lower surface of the fixed block 200 abuts against the side beam 120 so that the side beam 120 supports the fixed block 200. Further, the side beam 120 has a support portion 124 extending toward the pallet bottom plate 110, the support portion 124 extends to below the pallet bottom plate 110, the support portion 124 supports the pallet bottom plate 110, the lower surface of the fixed block 200 abuts against the upper surface of the support portion 124, and the side beam 120 supports the fixed block 200, which can ensure that the fixed block 200 is reliably connected to the side beam 120, and avoid the side beam 120 and the fixed block 200 from separating.

[0073] Please continue to see Figure 4As shown, in some embodiments of the present invention, the structure of the fixing block 200 is arranged in the accommodating space 600, and the side surface of the fixing block 200 opposite to the tray bottom plate 110 has a first supporting slope 220, and the first supporting slope 220 is arranged opposite to and spaced from the tray bottom plate 110. From the upper end to the lower end of the battery pack 10, the first supporting slope 220 is inclined toward the direction close to the placement groove 111, and the side wall of the placement groove 111 (that is, the bottom plate side wall 115) has a fourth supporting slope 113 on the outer surface opposite to the fixing block 200. The fourth supporting slope 113 is opposite to and spaced from the first supporting slope 220, and from the upper end to the lower end of the battery pack 10, the fourth supporting slope 113 is inclined toward the placement groove 111.

[0074] Specifically, the fourth support slope 113 can be arranged on the outer side wall surface of the bottom plate side wall 115 away from the lower battery pack 12, and the fourth support slope 113 can be constructed as a side wall of the accommodating space 600. The first support slope 220 can be arranged opposite to the fourth support slope 113, and there can be a gap (not shown in the figure) between the first support slope 220 and the fourth support slope 113. In this arrangement, the first support slope 220 and the fourth support slope 113 are bonded and connected by applying an adhesive (such as structural adhesive) between the first support slope 220 and the fourth support slope 113, and the dimensional tolerance of the tray body 110 is absorbed by controlling the thickness of the adhesive. At the same time, the tray bottom plate 110 has a good flatness, and the manufacturing requirements for the tray bottom plate 110 and the side beam 120 are reduced by using the characteristic that the adhesive can absorb the tolerance. In addition, the contact area between the fixed block 200 and the tray bottom plate 110 can be effectively increased, so that the tray bottom plate 110 can be more firmly fixed to the fixed block 200. By filling structural adhesive between the first supporting bevel 220 and the fourth supporting bevel 113, the sealing between the first supporting bevel 220 and the fourth supporting bevel 113 can be ensured.

[0075] Please continue to see Figure 4 and Figure 5As shown, further, the fixing blocks 200 are all arranged in the accommodation space 600, and the side surface of the fixing block 200 opposite to the side beam 120 has a second supporting inclined surface 230, and the surface of the side beam 120 opposite to the second supporting inclined surface 230 has a third supporting inclined surface 240, and the second supporting inclined surface 230 and the third supporting inclined surface 240 are fitted together, and from the upper end to the lower end of the battery pack 10, the second supporting inclined surface 230 and the third supporting inclined surface 240 are both inclined in the direction close to the placement groove 111. The third supporting inclined surface 240 can be configured as a side wall of the accommodation space 600. The side surface of the fixed block 200 facing away from the placement groove 111 can be constructed as a second supporting slope 230, and the second supporting slope 230 is arranged opposite to the third supporting slope 240. When the fixed block 200 is placed in the accommodating space 600, the second supporting slope 230 can fit more closely on the third supporting slope 240. Such a setting can effectively increase the contact area between the fixed block 200 and the side beam 120, so that the side beam 120 can more stably support the fixed block 200, and the third supporting slope 240 can support the fixed block 200.

[0076] Please continue to see Figure 4 As shown, further, the side beam 120 can define a cavity 121, and the cavity 121 has a connecting plate 122. Along the height direction of the battery pack 10, the connecting plate 122 is obliquely connected between the top wall of the cavity 121 and the bottom wall of the cavity 121. The connecting plate 122 can divide the cavity 121 into a plurality of sub-cavities 123, and the plurality of sub-cavities 123 are arranged in sequence in the width direction of the side beam 120. Such a setting can improve the structural strength of the side beam 120, and can improve the stability of the side beam 120, thereby improving the ability of the side beam 120 to support the battery module. In addition, by arranging the plurality of sub-cavities 123 in sequence in the width direction of the side beam 120, when the sub-cavity 123 away from the placement groove 111 among the plurality of sub-cavities 123 is hit, the sub-cavity 123 can absorb the collision force, thereby reducing the magnitude of the collision force transmitted to the inside of the battery pack 10, and can reduce the risk of the battery cells inside the battery pack 10 being damaged, thereby improving the safety of the battery pack 10.

[0077] Please continue to see Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the battery pack 10 further includes: a first fastener 400 , and the first fastener 400 is used to detachably mount the upper battery group 11 on the support block 300 .

[0078] Specifically, the first fastener 400 may be a bolt, and a threaded hole 310 may be provided on the edge of the support block 300 away from the tray 100. The number of the first fastener 400 and the threaded hole 310 may be multiple, and the multiple first fasteners 400 and the multiple threaded holes 310 are provided in a one-to-one correspondence. Further, multiple first through holes (not shown in the figure) may be provided on the edge of the upper battery pack 11, and the first through holes and the threaded holes 310 are provided in a one-to-one correspondence. The first fastener 400 may pass through the first through hole and be connected to the threaded hole 310. In this way, the upper battery pack 11 can be connected to the support block 300 through the first fastener 400, so that the user can freely disassemble and assemble the upper battery pack 11.

[0079] Please continue to see Figure 1 As shown, in some embodiments of the present invention, the battery pack 10 further includes: a second fastener 500, which is used to detachably mount the support block 300 on the fixing block 200. The second fastener 500 passes through the support block 300 and is connected to the fixing block 200.

[0080] Specifically, the second fastener 500 may also be a bolt, and the number of the second fasteners 500 may also be multiple. A through hole 320 may be provided on the edge of the side of the support block 300 away from the tray 100, and the through hole 320 may penetrate the support block 300 along the height direction of the battery pack 10. The second fastener 500 and the through hole 320 are provided in a one-to-one correspondence, and the second fastener 500 is threadedly connected to the fixing block 200 after passing through the through hole 320. This arrangement enables the support block 300 to be connected to the tray 100 through the second fastener 500, so that the user can freely disassemble and assemble the support block 300.

[0081] Please continue to see Figure 2 , Figure 5 As shown, in some embodiments of the present invention, the fixing block 200 has a mounting hole 250 , and the second fastener 500 extends into the mounting hole 250 and is threadedly connected to the fixing block 200 .

[0082] Specifically, the mounting hole 250 can be provided on the supporting boss 210, and the mounting hole 250 can be a threaded hole, and the mounting hole 250 is provided in a one-to-one correspondence with the through hole 320. The second fastener 500 passes through the through hole 320 and is threadedly connected with the mounting hole 250, so that the supporting block 300 and the fixing block 200 are connected by threaded connection, so that the supporting block 300 and the fixing block 200 can be directly in contact with each other to form a hard connection relationship, thereby effectively avoiding the torque attenuation of the second fastener 500.

[0083] Please continue to see Figure 2 , Figure 5As shown, in some embodiments of the present invention, there are multiple second fasteners 500 and multiple fixing blocks 200, and each fixing block 200 is assembled with at least one second fastener 500.

[0084] Specifically, the number of the second fasteners 500 and the mounting holes 250 may be consistent, and the number of the mounting holes 250 and the fixed blocks 200 may be consistent, for example, one mounting hole 250 is respectively provided on each fixed block 200. The number of mounting holes 250 may also be greater than the number of the fixed blocks 200, for example, two mounting holes 250 may be simultaneously provided on each fixed block 200. This is not specifically limited in the embodiment of the present invention, and is arranged so that the second fasteners 500 can be respectively connected to the fixed blocks 200.

[0085] Please continue to see Figure 5 As shown, in some embodiments of the present invention, the fixing block 200 is a metal part. Specifically, the fixing block 200 can be made of an aluminum material, or the fixing block 200 can be made of a steel material, but the present invention is not limited thereto. The fixing block 200 can also be made of other metal materials that play the same role as the steel material. Preferably, the fixing block 200 can be made of a steel material. Such a setting can greatly improve the load-bearing capacity of the fixing block 200 by setting the fixing block 200 as a metal part.

[0086] The vehicle according to the embodiment of the present invention (not shown in the figure) includes the battery pack 10 in the above embodiment. The specific structure and principle of the battery pack 10 have been described in detail in the above embodiment and will not be repeated here.

[0087] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0088] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0089] In the description of the present invention, "plurality" means two or more.

[0090] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0091] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: Lower battery pack; A tray, the tray comprising a tray bottom plate and side beams, the side beams being used to support the tray bottom plate, the tray bottom plate defining a placement slot for placing the lower battery pack; A fixing block, wherein a receiving space is defined between the bottom plate of the tray and the side beam, and the fixing block is at least partially disposed in the receiving space and fixed on the side beam; A support block and an upper battery pack, wherein the upper battery pack is located above the lower battery pack, the support block is fixed and supported on the fixing block, and the support block is used to install and support the upper battery pack; The lower end of the side beam has a supporting portion extending toward the inner side of the side beam and used to support the pallet bottom plate, the pallet bottom plate includes a bottom plate bottom wall, a bottom plate side wall and a bottom plate top wall, the bottom plate side wall is connected between the bottom plate bottom wall and the bottom plate top wall, the bottom plate side wall and the bottom plate bottom wall jointly define the placement groove, the bottom plate top wall overlaps the upper surface of the side beam, the bottom plate bottom wall is supported by the supporting portion, and the side beam, the bottom plate side wall and the bottom plate top wall jointly define the accommodating space.

2. The battery pack according to claim 1, characterized in that: The fixing block and / or the supporting block are provided with a supporting boss, the tray bottom plate has an avoidance hole for avoiding the supporting boss, and the supporting boss passes through the avoidance hole and is supported between the fixing block and the supporting block.

3. The battery pack according to claim 2, characterized in that: A sealing structure is provided between the supporting boss and the avoidance hole; and / or A sealing structure is provided between the tray bottom plate and the side beam, and the sealing structure is arranged around the avoidance hole.

4. The battery pack according to claim 1, characterized in that: The upper surface of the fixing block is flush with the upper surface of the side beam.

5. The battery pack according to claim 1, characterized in that: The lower surface of the fixing block abuts against the side beam so that the side beam supports the fixing block.

6. The battery pack according to claim 1, characterized in that: The fixing blocks are all arranged in the accommodating space, and the side surfaces of the fixing blocks opposite to the tray bottom plate have a first supporting slope, the first supporting slope is opposite to and spaced from the tray bottom plate, and in the direction from the upper end to the lower end of the battery pack, the first supporting slope is inclined toward the direction close to the placement groove.

7. The battery pack according to claim 1, characterized in that: The fixing blocks are all arranged in the accommodating space, and the side surface of the fixing block opposite to the side beam has a second supporting slope, and the surface of the side beam opposite to the second supporting slope has a third supporting slope, and the second supporting slope and the third supporting slope are fitted together, and from the upper end to the lower end of the battery pack, the second supporting slope and the third supporting slope are both inclined in the direction close to the placement groove.

8. The battery pack according to any one of claims 1 to 7, characterized in that: Also includes: A first fastener is used to detachably mount the upper battery pack on the support block.

9. The battery pack according to any one of claims 1 to 7, characterized in that: Also includes: A second fastener is used to detachably mount the support block on the fixing block.

10. The battery pack according to claim 9, characterized in that: The second fastener passes through the supporting block and is connected to the fixing block.

11. The battery pack according to claim 10, characterized in that: There are a plurality of the second fasteners and the fixing blocks, and each of the fixing blocks is assembled with at least one of the second fasteners.

12. A vehicle, characterized in that: Comprising a battery pack according to any one of claims 1-11.

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