Battery tray bottom plate, battery tray, battery pack and vehicle

Abstract

An embodiment of the present application provides a tray bottom plate for a battery, a battery tray, a battery pack and a vehicle, the tray bottom plate includes a main body portion and a flange portion, the main body portion includes a bottom wall and a side wall, the side wall is disposed around the bottom wall and together with the bottom wall defines a chamber for accommodating the battery, the thickness of the bottom wall is t1, 1 mm≦t1≦3 mm, the flange portion is installed on an edge of the side wall and disposed around the side wall, the thickness of the flange portion is t2, t2>t1.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application bearing application number 202220553715.X and title "Tray bottom plate for battery, battery tray, power battery pack and vehicle" filed with the State Intellectual Property Office of the People's Republic of China on March 14, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of vehicles, and in particular to a tray bottom plate for a battery, a battery tray, a battery pack, and a vehicle. [Background technology]

[0003] In a battery pack, a battery tray is generally used to place batteries. When designing a battery pack with different specifications, the dimensions, layout, etc. of the internal batteries and other components are different, and the requirements for the connection strength between the battery tray and other components are different, so the design of the battery tray needs to be changed accordingly. In addition, the mold used to manufacture the battery tray generally needs to be redesigned to meet the structural requirements of the battery tray after the above-mentioned changes, resulting in high design costs and processing costs. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems in the prior art by providing a tray bottom plate for a battery, which improves the connection strength with other members and improves the safety of the entire battery pack.

[0005] The tray bottom plate for a battery according to the embodiment of the first aspect of the present application includes a body portion and a flange portion, the body portion includes a bottom wall and a side wall, the side wall is disposed around the bottom wall and defines a chamber for accommodating a battery together with the bottom wall, and the thickness of the bottom wall is t 1 and 1mm≦t 1 ≦3 mm, the flange portion is located at the edge of the side wall and disposed around the side wall, and the thickness of the flange portion is t2 and t 2 >t 1 It is.

[0006] The battery tray bottom plate according to the embodiment of the present application has a bottom wall thickness of t 1 The thickness of the flange is t 2 and 1mm≦t 1 ≦3mm and t 2 >t 1 This can improve the connection strength between the tray bottom plate and other members, thereby improving the safety of the entire battery pack.

[0007] In some embodiments, 2*t 1 ≦t 2 ≦3*t 1 It is.

[0008] In some embodiments, the thickness of the sidewall is t 3 and t 3 =t 1 It is.

[0009] In some embodiments, the chamber has a depth, t, where 15 mm≦t≦45 mm.

[0010] In some embodiments, the included angle between the side wall and the bottom wall is α, where 100°≦α≦120°.

[0011] In some embodiments, the flange portion is formed with a through hole, the through hole having a diameter D, and d≦D≦min{10*t 2 , w / 3}, d is the diameter of the fastener that passes through the through hole and is fixedly connected to the tray frame, and w is the width of the flange portion.

[0012] In some embodiments, the flange portion includes a plurality of sub-flanges, the plurality of sub-flanges being connected in sequence end-to-end.

[0013] In some embodiments, each of the sub-flanges has a plurality of through holes formed therein, the through holes in each of the sub-flanges being spaced apart along the length of the sub-flange and / or along the width of the sub-flange.

[0014] In some embodiments, the tray bottom plate is a single piece.

[0015] In some embodiments, the tray bottom material is a composite material.

[0016] A battery tray according to a second embodiment of the present application includes a tray bottom plate for a battery according to the above-mentioned first embodiment of the present application, and a tray frame, the tray frame being installed below the flange portion and fixedly connected to the tray bottom plate.

[0017] The battery tray according to the embodiment of the present application uses the tray bottom plate described above to improve the connection strength between the battery tray and other members, thereby ensuring the safety of the battery pack when used.

[0018] In some embodiments, the battery tray further includes a fastener that passes through the through hole and is fixedly connected to the tray frame.

[0019] In some embodiments, the tray frame includes a frame portion that is disposed around the side wall and fixedly connected to the side wall and the flange portion.

[0020] In some embodiments, the frame portion is adhered to the sidewall and the flange portion.

[0021] In some embodiments, the tray frame further includes a support portion disposed on a side of the frame portion adjacent to the chamber and supporting a bottom portion of the bottom wall.

[0022] In some embodiments, the support is adhered to the bottom wall.

[0023] In some embodiments, the width of the frame portion is w 1 and the width of the support portion is w 2 and w 2 ≧2*w 1 / 3.

[0024] In some embodiments, the tray frame is a single piece.

[0025] A battery pack according to an embodiment of the third aspect of the present application includes at least one battery, a top cover, and a battery tray according to the embodiment of the second aspect of the present application, the top cover being disposed on the open side of the storage chamber and defining an installation space together with the tray bottom plate, and the at least one battery being installed in the installation space.

[0026] The battery pack in the vehicle according to the embodiment of the present application can easily ensure the safety of the entire battery pack by using the above-mentioned battery tray, and the vehicle according to the embodiment of the present application can easily ensure the safety of the vehicle during use by using the above-mentioned battery pack.

[0027] In some embodiments, the depth of the chamber is t and the height of each of the cells is h, where h / 4≦t≦h / 3.

[0028] In some embodiments, the top cover and the tray are fixedly connected via the fasteners.

[0029] A vehicle according to an embodiment of the fourth aspect of the present application includes the battery pack according to the embodiment of the above-mentioned third aspect of the present application.

[0030] The vehicle according to the embodiment of the present application can easily ensure the safety of the vehicle by using the battery pack.

[0031] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief description of the drawings]

[0032] The above and / or additional aspects and advantages of the present application will become apparent and will be readily understood by reference to the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

[0033] [Figure 1] FIG. 2 is a schematic diagram of a tray bottom plate according to an embodiment of the present application. [Diagram 2] FIG. 2 is a cross-sectional view of the tray bottom plate shown in FIG. [Diagram 3] FIG. 2 is a schematic diagram of a battery tray according to an embodiment of the present application. [Figure 4] FIG. 4 is an exploded view of the battery tray shown in FIG. [Diagram 5] 4 is another schematic diagram of the battery tray shown in FIG. 3. [Figure 6] FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. [Figure 7] FIG. 7 is an enlarged view of a portion B circled in FIG. [Figure 8] 1 is a schematic diagram of a battery pack according to an embodiment of the present application. [Figure 9] 1 is a schematic diagram of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout indicate the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are only for interpreting the present application, and should not be understood as limiting the present application.

[0035] The following disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the following describes specific example components and installations. It should be understood that these are merely exemplary and are not intended to limit the present application. The present application may also use repeated reference numerals and / or alphabetical references in different examples. Such repetition is for the purpose of brevity and clarity, and does not in itself indicate a relationship between the various embodiments and / or installations discussed. The present application also provides examples of various specific processes and materials, but one skilled in the art may be aware of the applicability of other processes and / or the use of other materials.

[0036] Hereinafter, a battery tray bottom plate 1 according to an embodiment of the present invention will be described with reference to the drawings.

[0037] As shown in Figures 1 and 2, the tray bottom plate 1 includes a main body 11, which includes a bottom wall 111 and a side wall 112. The side wall 112 is arranged to surround the bottom wall 111 and defines a storage chamber 110 together with the bottom wall 111. The storage chamber 110 stores a battery. The side wall 112 may be formed in a substantially annular structure. The bottom wall 111 and the side wall 112 each provide a certain degree of positional control for the battery, making it easy to ensure stable installation of the battery, and the tray bottom plate 1 can provide a protective effect for the battery.

[0038] The thickness of the bottom wall 111 is t 1 and 1mm≦t 1 If the thickness of the bottom wall 111 is ≦3 mm, the thickness of the bottom wall 111 is reasonable, and the thickness of the bottom wall 111 is too small, which causes the load-bearing capacity of the bottom wall 111 to be poor, and the thickness of the bottom wall 111 is too large, which makes the processing of the bottom wall 111 difficult and wastes material. For example, the thickness t of the bottom wall 111 is 1 may be 1 mm, 1.3 mm, 1.8 mm, 2 mm, 2.5 mm, 2.7 mm, or 3 mm, etc.

[0039] The tray bottom plate 1 further includes a flange portion 12, which is disposed on the edge of the side wall 112 and may be formed into a generally annular structure when disposed around the side wall 112, and at least a portion of the side wall 112 may be located radially inward of the annular structure corresponding to the flange portion 12.

[0040] The thickness of the flange 12 is t 2 and t 2 >t 1 Since the tray bottom plate 1 and other members need to be connected via the flange portion 12, by making the thickness of the flange portion 12 greater than the thickness of the bottom wall 111, the structural strength of the flange portion 12 is effectively improved, the connection strength between the tray bottom plate 1 and other members is improved, and the need for differentiation of the connection strength of the tray bottom plate 1 among different battery packs can be easily met. When the tray bottom plate 1 is used in the battery tray 100, the connection strength between the battery tray 100 and other members can be improved, and the safety of the entire battery pack can be improved.

[0041] The battery tray bottom plate 1 according to the embodiment of the present application has a bottom wall 111 having a thickness of t 1 The thickness of the flange is t 2 and 1mm≦t 1 ≦3mm and t 2 >t 1 This makes it possible to partially reinforce the tray bottom plate 1 and improve the connection strength between the tray bottom plate 1 and other members, thereby improving the safety of the entire battery pack.

[0042] In some embodiments, as shown in FIG. 1 ≦t 2 ≦3*t 1 For example, t 2 is 2*t 1 , 2.3*t 1 , 2.5*t 1 , 2.8*t 1 , or 3*t 1etc., and the thickness of the flange portion 12 and the bottom wall 111 can be set relatively reasonably, thereby ensuring a reasonable allocation and use of materials, facilitating the processing of the flange portion 12 and the bottom wall 111, and making the height of the battery pack reasonable, on the premise of ensuring that the tray bottom plate 1 can be adapted to different battery packs.

[0043] In some embodiments, the sidewall 112 has a thickness t 3 and t 3 =t 1 This makes it possible to easily simplify the processing of the main body 11. For example, when the main body 11 is a press-molded product, this helps to reduce design requirements for the mold.

[0044] 2, the depth of the chamber 110 is t, where 15 mm≦t≦45 mm, so that the chamber 110 can meet the needs of different batteries and improve the applicability of the tray bottom plate 1. For example, the depth of the chamber 110 can be 15 mm, 20 mm, 30 mm, 36 mm, 42 mm, or 45 mm, etc.

[0045] In some embodiments, as shown in FIG. 2, when the included angle between the side wall 112 and the bottom wall 111 is α, and 100°≦α≦120°, the side wall 112 may extend from the edge of the bottom wall 111 inclined toward the direction away from the center of the bottom wall 111 to the flange portion 12 in the direction from the bottom toward the flange portion 12, and it is easy to ensure that the storage chamber 110 has an opening of an appropriate size, and the battery can be smoothly inserted and removed through the opening. In addition, when the main body portion 11 is a press-molded product, the included angle between the side wall 112 and the bottom wall 111 meets the above requirements, which facilitates the release of the main body portion 11 during processing, improves the convenience of the release of the main body portion 11, and thereby helps to improve the processing efficiency of the tray bottom plate 1. For example, the included angle α may be 100°, 103°, 110°, 115°, or 120°, etc.

[0046] In addition, the extending direction of the side wall 112 and the normal direction of the bottom wall 111 intersect to form a non-zero included angle, thereby improving the extending length of the side wall 112. When the side wall 112 is bonded to the tray frame 2, the bonding area between the side wall 112 and the tray frame 2 can be increased, thereby improving the connection strength between the tray bottom plate 1 and the tray frame 2 to a certain extent, and further ensuring the reliability of the battery installation.

[0047] In some embodiments, as shown in FIG. 1, the flange portion 12 is formed with a plurality of through holes 120, and the diameter of the through holes 120 is D, where d≦D≦min{10*t 2 , w / 3}, d is the diameter of the fastener 5 inserted through the through hole 120 and fixedly connected to the tray frame 2, and w is the width of the flange portion 12. By setting D≧d, the fastener 5 can be well avoided by the through hole 120, ensuring that the fastener 5 is smoothly attached to the through hole 120, and reducing the pressing force of the fastener 5 against the edge of the through hole 120, which helps to avoid the generation of unnecessary stress between the fastener 5 and the flange portion 12. D≦min{10*t 2 , w / 3}, that is, D is 10*t 2 By not exceeding the minimum value between w / 3 and w / 3, the structural strength of the edge of the through hole 120 is ensured, which helps to ensure that the through hole 120 has high structural stability and further ensures that the connection between the flange portion 12 and other components, such as the tray frame 2, is strong.

[0048] As can be understood, when the tray bottom plate 1 is applied to the battery tray 100, the tray bottom plate 1 is fixedly connected to the tray frame 2, and the tray frame 2 can realize a strong mounting in the height direction of the battery by the fasteners 5, for example, a top cover 4 is installed on the upper side of the tray bottom plate 1, and the fasteners 5 fixedly connect the top cover and the tray frame 2. In the example of FIG. 1, the flange portion 12 includes a plurality of sub-flanges 121, and the plurality of sub-flanges 121 are connected end-to-end in sequence to form the flange portion 12 in a polygonal ring shape, and each sub-flange 121 has a plurality of through holes 120 formed therein, and the plurality of through holes 120 in each sub-flange 121 may be arranged at intervals along the length direction of the sub-flange 121 and / or the width direction of the sub-flange 121.

[0049] In some embodiments, the tray bottom plate 1 is a one-piece molded product, which omits the connection process between the main body portion 11 and the flange portion 12, thereby improving the processing efficiency of the tray bottom plate 1, and eliminating the need to process connection structures, etc. in the main body portion 11 and / or the flange portion 12, which simplifies the structure of the tray bottom plate 1 and helps reduce costs. In addition, the connection strength between each part of the tray bottom plate 1 can be easily ensured, and the overall structural strength of the tray bottom plate 1 can be easily ensured.

[0050] As can be understood, when the tray bottom plate 1 is an integrally molded product, the processing method of the tray bottom plate 1 can be specifically set according to actual needs. For example, the tray bottom plate 1 can be formed as a pressed integral product by the method of press molding, and the mold for manufacturing the tray bottom plate 1 is provided with replaceable modules at the part corresponding to the flange portion 12, the thickness of different modules is different, and the thickness of the modules is matched with the thickness of the flange portion 12, for example, when the thickness of the flange portion 12 is thick, the thickness of the modules is thin, and when the thickness of the flange portion 12 is thin, the thickness of the modules is thick, and then the body portion 11 and the flange portion 12 are pressed together by a pressing process or the like.

[0051] As a result, during the manufacturing and molding of the tray bottom plate 1, for the flange portion 12 that needs to be processed to a different thickness, a module of a corresponding thickness can be replaced to meet the needs of different thicknesses of the flange portion 12, effectively improving the versatility of the mold for manufacturing the tray bottom plate 1, reducing manufacturing costs, and eliminating the need to redesign the mold for manufacturing the tray bottom plate 1.

[0052] In addition, in some technologies, the height of the whole battery pack is adjusted due to the change in the height of the battery of the battery pack, and the battery tray cannot be adapted to battery packs of different heights, and generally, the battery tray and the mold for manufacturing the battery tray need to be redesigned. In the present application, the connection between the tray bottom plate 1 and other components is reliable, and the thickness of the flange portion 12 is greater than the thickness of the bottom wall 111, so that the thickness of the flange portion 12 is not limited by the thickness of the bottom wall 111, and thus the design of the thickness of the flange portion 12 is flexible. The thickness of the flange portion 12 can be appropriately adjusted according to the design needs so that the tray bottom plate 1 can meet the connection needs of battery packs of different heights to the tray bottom plate 1, so that the tray bottom plate 1 can adapt to the change in the height of the battery pack, improving the adaptability of the tray bottom plate 1, and there is no need to redesign the tray bottom plate 1 and the mold for manufacturing the tray bottom plate 1.

[0053] As a result, by using the battery tray 100 with the tray bottom plate 1 of the present application for battery packs of different heights, the thickness of the flange portion 12 can be reasonably adjusted according to actual needs, allowing the battery tray 100 to fit battery packs of different heights and improving the applicability of the battery tray 100. If the battery tray 100 includes a tray frame 2, there is no need to redesign the tray frame 2 to meet the connection strength needs between the battery tray 100 and other components due to battery packs of different heights, and there is no need to redesign the mold for manufacturing the tray frame 2, effectively reducing design costs and processing costs.

[0054] In some embodiments, the tray bottom plate 1 is made of composite material, so that the structural strength of the tray bottom plate 1 can be easily ensured and the tray bottom plate 1 can stably mount the batteries.

[0055] In addition, in some technologies, the tray bottom plate is made of an aluminum alloy member, and therefore has a certain degree of electrical conductivity, which can easily cause a risk of high-voltage arc discharge between the tray bottom plate and the battery if an abnormality occurs, such as leakage of the battery pack coolant. In the present application, the tray bottom plate 1 is made of a composite material, which has high electrical insulation properties and can avoid the risk of high-voltage arc discharge between the tray bottom plate 1 and the battery, even if the battery pack coolant leaks, thereby ensuring that the battery pack can be used normally.

[0056] Preferably, when the tray bottom plate 1 is made of a composite material, during the manufacturing and molding of the tray bottom plate 1, since the thickness of the flange portion 12 is greater than the thickness of the bottom wall 111, multiple plies of prepreg material cut based on the shape of the flange portion 12 are added at the position corresponding to the flange portion 12, and the mold for manufacturing the tray bottom plate 1 is installed with an exchangeable module at the part corresponding to the flange portion 12, the thicknesses of different modules are different, and the thickness of the module is compatible with the thickness of the flange portion 12, and then the main body portion 11 and the flange portion 12 are integrally bonded by a hot pressing process or the like.

[0057] According to the embodiment of the second aspect of the present application, as shown in Figures 3 to 5, a battery tray 100 includes a tray bottom plate 1 and a tray frame 2, the tray bottom plate 1 being the tray bottom plate 1 for a battery according to the embodiment of the first aspect of the present application, and the tray frame 2 being installed under the flange portion 12 and fixedly connected to the tray bottom plate 1. The tray frame 2 can directly or indirectly support the tray bottom plate 1, thereby allowing the battery to be stably installed in the accommodation chamber 110 of the tray bottom plate 1, improving the connecting force between the tray bottom plate 1 and the tray frame 2 to a certain extent, and easily ensuring that the tray frame 2 and the tray bottom plate 1 are fixed reliably.

[0058] The battery tray 100 according to the embodiment of the present application uses the tray bottom plate described above to improve the connection strength between the battery tray 100 and other members, thereby ensuring the safety of the battery pack when used.

[0059] In some embodiments, the battery tray 100 further includes a fastener 5, which passes through the through hole 120 and is fixedly connected to the tray frame 2. In some embodiments, the number of fasteners 5 is multiple, the number of through holes 120 is also multiple, and the multiple fasteners 5 correspond one-to-one to the multiple through holes 120. This provides a fixed connection between the battery tray 100 and the tray frame 2, making it less likely for misalignment and movement to occur.

[0060] 4, 6 and 7, the tray frame 2 includes a frame portion 21, which can be formed into a substantially annular structure when installed around the side wall 112, and is installed on the side of the side wall 112 facing away from the receiving chamber 110. When the frame portion 21 is fixedly connected to the side wall 112 and the flange portion 12, i.e., when the frame portion 21 is fixedly connected to the side wall 112 and the frame portion 21 is fixedly connected to the flange portion 12, a sufficient connection area between the frame portion 21 and the tray bottom plate 1 can be easily ensured, thereby ensuring that the connection between the frame 21 and the tray bottom plate 1 is reliable.

[0061] In the description of the present application, "annular" should be understood in a broad sense, i.e., it is not limited to "circular ring", and may be, for example, "polygonal ring", etc. For example, in the example of Fig. 1 to Fig. 4, the frame portion 21, the side wall 112, and the flange portion 12 are each formed in a substantially rectangular ring shape, the frame portion 21 has four sides, and each side of the frame portion 21 is fixed to a corresponding side of the side wall 112 and is also fixed to a corresponding side of the flange portion 12 (for example, the above-mentioned corresponding sub-flange 121).

[0062] In some embodiments, as shown in Fig. 7, when the frame portion 21 is bonded to the side wall 112, there is no need to form a connection hole in either the side wall 112 or the frame portion 21, which simplifies the processing steps of the frame portion 21 and the side wall 112, and also avoids the formation of a connection hole in the side wall 112, which is difficult to seal the accommodation chamber 110, because the side wall 112 is involved in defining the accommodation chamber 110. When the frame portion 21 is bonded to the flange portion 12, there is no need to form a connection hole in either the flange portion 12 or the frame portion 21, which simplifies the processing steps of the frame portion 21 and the flange portion 12. This ensures a large bonding area between the frame portion 21 and the tray bottom plate 1, and effectively ensures the connection strength between the tray frame 2 and the tray bottom plate 1.

[0063] In some embodiments, as shown in FIG. 7 , the tray frame 2 further includes a support portion 22, which is installed on the side of the frame portion 21 close to the storage chamber 110 and supports the bottom of the bottom wall 111, so that the battery can be indirectly placed on the support portion 22, which effectively ensures that the battery is securely attached, and also reduces the placement requirements of the tray bottom plate 1, reduces the installation requirements of the tray bottom plate 1, and helps to reduce the cost of the battery tray 100.

[0064] The direction “inner” refers to a direction along the radial direction of the frame portion 21, closer to the central axis of the frame portion 21.

[0065] As can be understood, the specific installation manner of the support 22 can be specifically set according to actual needs. For example, in the examples of Fig. 4, Fig. 6 and Fig. 7, the frame part 21 is formed in an annular structure, and the support part 22 is installed corresponding to a part of the entire inner wall of the frame part 21, so that the structure of the support part 22 is simplified, the amount of material used for the support part 22 is reduced, and the cost is reduced, on the premise that the battery mounting needs are ensured. Of course, the support part 22 may be installed corresponding to the entire inner wall of the frame part 21, for example, the support part 22 may define an annular structure, which is helpful to improve the mounting capacity of the tray frame 2.

[0066] In some alternative embodiments, as shown in FIG. 7, the support portion 22 and the frame portion 21 are integrally molded, which omits the connection process between the support portion 22 and the frame portion 21 and helps to improve the processing efficiency of the tray frame 2. In addition, there is no need to process connection structures, etc. in the frame portion 21 and / or the support portion 22, which helps to simplify the structure of the tray frame 2 and reduce costs.

[0067] In some embodiments, as shown in FIG. 7, when the support portion 22 is adhered to the bottom wall 111, there is no need to form a connection hole in either the bottom wall 111 or the support portion 22, which simplifies the processing steps of the support portion 22 and the bottom wall 111, and also avoids the formation of a connection hole in the bottom wall 111, which would make it difficult to seal the storage chamber 110, since the bottom wall 111 is involved in defining the storage chamber 110.

[0068] In some embodiments, as shown in FIG. 7, the width of the frame portion 21 is w 1 and the width of the support portion 22 is w 2 and w 2 ≧2*w 1 By making the width of the support portion 22 to the bottom wall 111 equal to 3, the support width of the support portion 22 to the bottom wall 111 can be easily ensured, and effective support of the support portion 22 to the bottom wall 111 can be realized. For example, 2 / w 1 may be 2 / 3, or 3 / 4, or 4 / 5, etc.

[0069] As shown in Fig. 8, Fig. 8 is a schematic diagram of a battery pack according to an embodiment of the present application. According to an embodiment of the third aspect of the present application, a battery pack 200 includes at least one battery 3, a top cover 4, and a battery tray 100, the battery tray 100 being the battery tray 100 according to the embodiment of the second aspect of the present application, the top cover 4 is disposed on the open side of the receiving chamber 110 and defines an installation space together with the tray bottom plate 1, and the at least one battery 3 is disposed in the installation space.

[0070] The battery pack 200 according to the embodiment of the present application uses the battery tray 100, so that the safety of the entire battery pack 200 can be easily ensured.

[0071] 2, when the depth of the storage chamber 110 is t and the height of each battery 3 is h, and h / 4≦t≦h / 3, the height of the battery 3 is greater than the depth of the storage chamber 110, and when the storage chamber 110 stores a part of the battery, the other part of the battery 3 allows the battery to be smoothly removed from the storage chamber 110 or the battery 3 to be stably placed in the storage chamber 110, thereby improving the convenience of processing the battery tray 100 while ensuring a stable placement of the battery 3 by rationalizing the relationship between the depth of the storage chamber 110 and the height of the battery 3. For example, t / h may be 0.25, 0.27, 0.29, 0.3, or 1 / 3, etc.

[0072] In this case, the top cover 4 also defines a storage chamber, which can accommodate other parts of the battery 3; in this case, the mounting space may include the storage chamber 110 and the storage chamber, thereby achieving all-round protection for the battery.

[0073] In some embodiments, a bottom protective plate is installed under the battery tray 100 to provide further protection for the battery pack 200 .

[0074] As shown in Fig. 9, Fig. 9 is a schematic diagram of a vehicle according to an embodiment of the present application. The vehicle 300 according to the embodiment of the fourth aspect of the present application includes the battery pack 200 according to the embodiment of the third aspect of the present application.

[0075] The vehicle 300 according to the embodiment of the present application uses the battery pack 200, so that the safety of the vehicle 300 during use can be easily ensured.

[0076] The remaining configuration and operation of vehicle 300 according to embodiments of the present application are known to those skilled in the art and will not be described in detail herein.

[0077] In the description of this application, the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of easily explaining and simplifying the description of this application, and do not indicate or suggest that the devices or elements shown have a specific orientation and must be configured and operated in a specific orientation, and should not be understood as limiting the application. In addition, a feature defined by "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0078] In the description of this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection via an intermediate medium, or a communication between two parts. A person skilled in the art can understand the specific meaning of the above terms in this application according to the specific situation.

[0079] In the description of this specification, the term "one embodiment," "some embodiments," "exemplary embodiments," "examples," "particular examples," or "some examples" refers to the specific features, structures, materials, or characteristics described in the embodiment or example combinations included in at least one embodiment or example of the present application. In the specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples as appropriate.

[0080] Although embodiments of the present application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and objectives of the present application, and that the scope of the present application is limited by the claims and their equivalents. [Explanation of symbols]

[0081] 100 Battery Tray 1 Tray bottom plate 11 Main body 110 Containment Room 111 Bottom wall 112 Side wall 12 Flange 120 Through hole 121 Sub flange 2 Tray Frame 21 Frame section 22 Support part 3 batteries 4 Top cover 5 Fasteners 200 Battery Packs 300 vehicles

Claims

1. A tray bottom plate (1) for a battery, comprising a body portion (11) and a flange portion (12), The body portion (11) includes a bottom wall (111) and a side wall (112), the side wall (112) is disposed around the bottom wall (111), and the side wall (112) and the bottom wall (111) together define a storage chamber (110) for storing a battery (3), and the thickness of the bottom wall (111) is t １ and 1 mm≦t １ ≦3 mm, The flange portion (12) is installed on the edge of the side wall (112), the flange portion (12) is disposed around the side wall (112), and the thickness of the flange portion (12) is t ２ and t ２ >t １ A tray bottom plate (1) for a battery, characterized in that

2. 2*t １ ≦t ２ ≦3*t １ 2. The tray base plate (1) for batteries according to claim 1, characterized in that

3. The thickness of the side wall (112) is t ３ and t ３ = t １ 3. A tray bottom plate (1) for a battery according to claim 1 or 2, characterized in that

4. 4. The tray bottom plate (1) for batteries according to claim 1, characterized in that the depth of the chamber (110) is t, and 15 mm≦t≦45 mm.

5. The tray bottom plate (1) for a battery according to any one of claims 1 to 4, characterized in that the included angle between the side wall (112) and the bottom wall (111) is α, where 100°≦α≦120°.

6. The flange portion (12) is formed with a through hole (120), and the diameter of the through hole (120) is D, where d≦D≦min{10*t ２ 6. The tray bottom plate (1) for a battery according to claim 1, wherein d is a diameter of a fastener (5) that passes through the through hole (120) and is fixedly connected to the tray frame (2), and w is a width of the flange portion (12).

7. The tray bottom plate (1) for a battery according to claim 6, characterized in that the flange portion (12) includes a plurality of sub-flanges (121), the plurality of sub-flanges (121) being connected in sequence end-to-end.

8. The tray bottom plate (1) for a battery as described in claim 7, characterized in that each of the sub-flanges (121) has a plurality of through holes (120) formed therein, and the plurality of through holes (120) in each of the sub-flanges (121) are spaced apart along the length direction of the sub-flange (121) and / or the width direction of the sub-flange (121).

9. The tray bottom plate (1) for a battery according to any one of claims 1 to 8, characterized in that the tray bottom plate (1) is a one-piece molding.

10. The tray bottom plate (1) for a battery according to any one of claims 1 to 9, characterized in that the material of the tray bottom plate (1) is a composite material.

11. A battery tray (100) comprising a tray bottom plate (1) for a battery according to any one of claims 1 to 10 and a tray frame (2), The battery tray (100) is characterized in that the tray frame (2) is installed under the flange portion (12) and fixedly connected to the tray bottom plate (1).

12. The battery tray (100) of claim 11, further comprising a fastener (5), the fastener (5) passing through the through hole (120) and fixedly connected to the tray frame (2).

13. The battery tray (100) of claim 11 or 12, characterized in that the tray frame (2) includes a frame portion (21), the frame portion (21) is arranged around the side wall (112), and the frame portion (21) is fixedly connected to the side wall (112) and the flange portion (12).

14. The battery tray (100) of claim 13, wherein the frame portion (21) is glued to the sidewall (112) and the flange portion (12).

15. The battery tray (100) of claim 13 or 14, wherein the tray frame (2) further includes a support portion (22), which is installed on a side of the frame portion (21) adjacent to the storage chamber (110) and supports a bottom portion of the bottom wall (111).

16. The battery tray (100) of claim 15, wherein the support (22) is glued to the bottom wall (111).

17. The width of the frame portion (21) is w １ and the width of the support portion (22) is w ２ And w ２ ≧2*w １ 17. The battery tray (100) according to claim 15 or 16, characterized in that the battery tray (100) is 1 / 3.

18. A battery pack (200) including at least one battery (3), a top cover (4), and the battery tray (100) according to any one of claims 11 to 17, wherein the top cover (4) is disposed on an open side of the storage chamber (110), and the top cover (4) defines an installation space together with the tray bottom plate (1), and the at least one battery (3) is installed in the installation space.

19. 20. The battery pack (200) of claim 18, wherein the depth of the chamber (110) is t, the height of each of the batteries (3) is h, and h / 4≦t≦h / 3.

20. A vehicle (300) including a battery pack (200) according to any one of claims 18 to 19.

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