Multi-layer battery box body and battery box

Abstract

The utility model relates to the technical field of battery boxes, in particular to a multilayer battery box body and a battery box. The multi-layer battery box comprises a box body; the supporting structure is mounted in the box body and divides the interior of the box body into a plurality of accommodating layers, each accommodating layer accommodates one battery module, and the supporting structure is used for mounting the battery modules; wherein the supporting structure comprises two longitudinal supporting beams, a transverse supporting beam and a supporting plate, and the two longitudinal supporting beams are installed on the two opposite sides of the inner wall of the box body; a plurality of transverse supporting beams are arranged, and the plurality of transverse supporting beams are distributed at intervals; and the supporting plate is mounted on the transverse supporting beam and is used for bearing the battery module. According to the multilayer battery box provided by the invention, the problem of low mounting stability of a large-weight module battery is solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery boxes, and in particular to a multi-layer battery box body and a battery box. Background Art

[0002] A battery box is usually a group of batteries consisting of a battery module, a box body, a battery management system, and mounting structural parts. With the increase in the demand for battery life, the traditional single-layer battery box can no longer meet the power demand, so a battery box with multiple layers of module batteries has emerged, but the method used is to directly fix the multiple layers of module batteries on the box body with bolts. Therefore, it can only be adapted to lightweight module batteries and battery boxes with small power. For heavy module batteries, the installation is not stable enough and cannot meet the needs of large-capacity battery boxes. Utility Model Content

[0003] Based on this, it is necessary to provide a multi-layer battery box body and a battery box to solve the problem of low installation stability of heavy module batteries.

[0004] A multi-layer battery box body, comprising:

[0005] Box body;

[0006] A support structure is installed in the box body and divides the interior of the box body into multiple accommodating layers, each of which accommodates a battery module, and the support structure is used to install the battery module;

[0007] Wherein, the supporting structure includes a longitudinal support beam, a transverse support beam and a support plate, the longitudinal support beams are arranged in two, and the two longitudinal support beams are installed on opposite sides of the inner wall of the box body, and each of the longitudinal support beams extends along the length direction of the box body; the transverse support beams are arranged in multiple, and the multiple transverse support beams are distributed at intervals, and the two ends of each transverse support beam are respectively installed on the two oppositely arranged longitudinal support beams; the support plate is installed on the transverse support beams to carry the battery module.

[0008] In one embodiment, both ends of the transverse support beam are detachably mounted on the longitudinal support beam via connecting pieces.

[0009] In one embodiment, an open slot is formed on the end of the transverse support beam, and the connecting member is arranged corresponding to the position of the open slot.

[0010] In one embodiment, the number of the transverse support beams is set to N1, 3≤N1≤5.

[0011] In one embodiment, the plurality of accommodating layers are arranged along the height direction of the box body, and the plurality of accommodating layers are at least defined as a first accommodating layer and a second accommodating layer;

[0012] The second containing layer is located above the first containing layer; and the battery module located in the second containing layer is installed on the supporting plate.

[0013] In one embodiment, the first containing layer is configured as the bottom layer in the height direction of the box body, and the remaining containing layers are located above the first containing layer;

[0014] Wherein, a mounting structure is provided in the first containing layer, and the mounting structure is used for mounting the battery module located in the first containing layer.

[0015] In one embodiment, the mounting structure includes a transverse mounting beam and a mounting plate, wherein the transverse mounting beam is provided in plurality, the plurality of transverse mounting beams are spaced apart along the length direction of the box body, and the transverse mounting beam is connected to the bottom of the box body; the mounting plate is connected to the transverse mounting beam and is used to install the battery module in the first containing layer.

[0016] In one embodiment, the cross section of the transverse mounting beam is an X-shaped structure, and the mounting plate is provided with a groove for accommodating the transverse mounting beam.

[0017] In one embodiment, the number of the transverse mounting beams is set to N2, 3≤N2≤5.

[0018] The present application also provides a battery box, comprising a battery module and the multi-layer battery box body described in any of the above embodiments.

[0019] In one embodiment, in the height direction of the box body, the battery module is spaced apart from the bottom of the containing layer located above it.

[0020] In one embodiment, in the width direction of the box body, there is a gap between the inner wall of the first containing layer and the outer wall of the battery module installed on the first containing layer.

[0021] In one embodiment, the multi-layer battery box body further includes a counterweight, and the counterweight is installed in the gap.

[0022] In one embodiment, the number of the gaps is configured to be two, and the battery modules at the corresponding positions of the two gaps are on both sides of the box body in the width direction;

[0023] The counterweights are arranged in the two gaps, and the two counterweights are symmetrically arranged with the battery module as a symmetry axis.

[0024] Compared with the prior art, the multi-layer battery box body and battery box provided in the present application support the battery module through a support structure composed of longitudinal support beams, transverse support beams, and support plates. The entire support structure has a strong load-bearing capacity, ensuring stability when installing heavy module batteries. The overall structure is stable, which can meet the battery requirements of large-capacity battery boxes to a great extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of the multi-layer battery box provided in this application.

[0027] Figure 2 for Figure 1 Front view with one of the side panels hidden.

[0028] Figure 3 It is a structural schematic diagram of the support structure in this application.

[0029] Figure 4 It is a structural schematic diagram of the installation structure in this application.

[0030] Figure 5 This is a bottom view of the installation structure in this application.

[0031] Figure 6 for Figure 5 Cross-sectional view along AA.

[0032] Figure 7 This is a schematic diagram of the structure of the battery box provided in this application.

[0033] Figure 8 This is a schematic diagram of a battery box provided in the present application after a counterweight is provided.

[0034] Figure numerals: 100, box body; 110, containing layer; 111, first containing layer; 112, second containing layer; 113, third containing layer; 200, supporting structure; 210, longitudinal supporting beam; 220, transverse supporting beam; 221, connecting piece; 222, opening groove; 240, supporting plate; 300, battery module; 500, mounting structure; 510, transverse mounting beam; 520, mounting plate; 600, gap; 700, counterweight. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0040] See also Figures 1 to 6The present application provides a multi-layer battery box, including a box body 100 and a support structure 200; the support structure 200 includes a longitudinal support beam 210, a transverse support beam 220, and a support plate 240; the support structure 200 is installed in the box body 100, and the interior of the box body 100 is divided into multiple accommodating layers 110, each accommodating layer 110 accommodates a battery module 300, and the support structure 200 is used to install the battery module 300. Among them, there are two longitudinal support beams 210, and the two longitudinal support beams 210 are installed on the opposite sides of the inner wall of the box body 100, and each longitudinal support beam 210 extends along the length direction x of the box body 100; there are multiple transverse support beams 220, and the multiple transverse support beams 220 are distributed at intervals, and the two ends of each transverse support beam 220 are respectively installed on the two longitudinal support beams 210 arranged oppositely; the support plate 240 is installed on the transverse support beam 220, and is used to carry the battery module 300.

[0041] In this way, the entire support structure 200 is composed of multiple structures to support the entire battery module 300, with a strong load-bearing capacity, ensuring the stability when installing heavy module batteries, and the overall structure is stable, and even multiple groups of module batteries can be installed, which greatly meets the battery requirements of large-capacity battery boxes. The multi-layer setting also allows a battery box to accommodate more battery modules 300, further ensuring the power requirements of large-capacity battery boxes.

[0042] In one embodiment, the support structure 200 is provided as a group, and the multi-layer containing layer 110 is arranged along the height direction z of the box body 100, and the multi-layer containing layer 110 is defined as a first containing layer 111 and a second containing layer 112. The second containing layer 112 is located above the first containing layer 111; and the battery module 300 located in the second containing layer 112 is installed on the support plate 240. The first containing layer 111 is configured as the bottom layer in the height direction z of the box body 100, and the remaining containing layers 110 are located above the first containing layer 111.

[0043] Of course, if Figure 2 As shown, the number of layers of the box body 100 is not limited to two layers. In other embodiments, the support structure 200 can also be set to two groups or more to separate the battery box into three layers or even more layers. For easy understanding, the figure shows a three-layer solution. At this time, the three containment layers 110 are respectively a first containment layer 111, a second containment layer 112, and a third containment layer 113.

[0044] In this embodiment, the box body 100 is a metal box with a hollow interior, and the longitudinal support beam 210 is a metal tube with an I-shaped cross-section. The flat portion of the I-shape is fixed to the inner wall of the box body 100 by welding, and the raised portion of the I-shape protrudes from the inner wall of the box body 100 to facilitate the placement of the end of the transverse support beam 220.

[0045] Of course, the longitudinal support beam 210 and the inner wall of the box body 100 can also be connected in a detachable manner, such as by screws or bolts.

[0046] See also Figure 2 , Figure 3 , the transverse support beam 220 is a metal square tube, which is also set to multiple. In this embodiment, the number of the transverse support beams 220 is set to N1, and is limited to 3≤N1≤5. Here, N1 can be 3, 4, or 5. It should be explained that when N1 is less than 3, the number of the transverse support beams 220 is small, resulting in insufficient bearing capacity, while when N1 is less than 5, the number of the transverse support beams 220 is large, and its gravity increases, which is not conducive to lightweight setting. Therefore, here, N1 is limited to 3≤N1≤5, while ensuring sufficient bearing capacity, the overall lightweight setting of the support structure 200 is achieved, avoiding the support structure 200 itself from being too heavy and increasing the burden. Here, the metal square tube can be a stainless steel tube, an iron tube, etc.

[0047] Preferably, when there are three transverse support beams 220, they are respectively distributed at the two ends and the middle of the corresponding battery module 300. When there are more than three, they are evenly spaced at the two ends and the middle of the battery module 300. Both ends of each transverse support beam 220 are respectively placed on the longitudinal support beam 210 of the inner wall of the box body 100, and are detachably connected to the longitudinal support beam 210.

[0048] Furthermore, both ends of the transverse support beam 220 are detachably mounted on the longitudinal support beam 210 through connecting members 221 . In the present embodiment, the connecting members 221 are configured as screws or bolts.

[0049] Preferably, in order to facilitate installation and removal of the connecting member 221 , an open slot 222 is provided at the end of the transverse support beam 220 , and the connecting member 221 is arranged at a position corresponding to the open slot 222 .

[0050] In this embodiment, the opening groove 222 is a notch formed by cutting off the upper layer of the end of the transverse support beam 220, but it is certainly not limited thereto, and the opening groove 222 may also be a groove or notch formed by stamping.

[0051] like Figure 3As shown, the support plate 240 is a metal plate for supporting the battery module 300. The support plate 240 is mounted on the transverse support beam 220 by bolts. Of course, the support plate 240 can also be connected to the transverse support beam 220 by other means such as welding and bonding.

[0052] In one embodiment, the support plate 240 completely covers the transverse support beams 220 distributed at both ends of the corresponding battery module 300 at both ends corresponding to the length direction x, and is fixedly connected to the transverse support beams 220 by screws, so that the longitudinal support beam 210, the transverse support beam 220, and the support plate 240 are all interconnected, the overall stability is higher, and the carrying capacity is further improved.

[0053] At the same time, in order to achieve stable support of the battery module 300 by the support plate 240, the length and width of the support plate 240 are set to be larger than the length and width of the battery module 300 placed thereon, and the width of the support plate 240 is set to 70%-80% of the length of the transverse support beam 220. The specific values ​​can be 70%, 75%, or 80%. Under this setting, the stability and load-bearing performance of the entire support structure 200 can be achieved to the greatest extent.

[0054] Furthermore, glue is applied between the bottom of the battery module 300 and the support plate 240 to achieve adhesion between the two. In addition, a plurality of bolts are also provided on the battery module 300, and the lower ends of the bolts pass through the support plate 240 and are connected to the support plate 240. In this way, the connection strength between the battery module 300 and the support plate 240 is increased. When the box body 100 vibrates, there will be no positional offset between the battery module 300 and the support plate 240, thereby improving the stability of the entire box body 100.

[0055] However, it is not limited thereto. In other embodiments, the bottom of the battery module 300 and the support plate 240 may be connected only by bonding, bolting, or clamping.

[0056] like Figure 2 As shown, a mounting structure 500 is provided in the first containing layer 111 , that is, a mounting structure 500 is provided in the bottom containing layer, and the mounting structure 500 is used to install the battery module 300 located in the first containing layer 111 . In other words, the battery module 300 of the first containing layer 111 is installed on the mounting structure 500 .

[0057] See also Figures 4 to 6The mounting structure 500 includes a transverse mounting beam 510 and a mounting plate 520. The number of the transverse mounting beams 510 is set to be multiple, and the multiple transverse mounting beams 510 are spaced apart along the length direction x of the box body 100 and connected to the bottom of the box body 100. The mounting plate 520 is connected to the transverse mounting beam 510, and the mounting plate 520 is provided with a groove for accommodating the transverse mounting beam 510.

[0058] In this embodiment, the number of transverse mounting beams 510 is set to N2, and is limited to 3≤N2≤5, N2 can be 3, 4, or 5. The number and position settings of the transverse mounting beams 510 are the same as those of the transverse support beams 220, ensuring sufficient load-bearing capacity while achieving an overall lightweight setting of the support structure 200.

[0059] Further, the transverse mounting beam 510 is a metal pipe with a cross-section of an "X"-shaped structure, and the mounting plate 520 is a metal plate with a cross-section of an "X"-shaped structure to form a groove covering the transverse mounting beam 510. The "X"-shaped side portion of the mounting plate 520 is welded and fixedly connected to the bottom of the box body 100. Here, the metal pipe can be a stainless steel pipe or an iron pipe.

[0060] In this embodiment, the battery module 300 located in the first accommodation layer 111 is mounted on the mounting plate 520. Specifically, the length and width of the raised portion of the mounting plate 520 are correspondingly set to be greater than the length and width of the battery module 300, and the battery module 300 is also penetrated by a plurality of bolts, and the lower ends of the bolts pass through the mounting plate 520 and are connected to the mounting plate 520.

[0061] The battery module is fixed to the mounting plate by bolts, which increases the connection strength between the battery module 300 and the mounting plate 520. When the box body 100 vibrates, there will be no positional offset between the battery module 300 and the mounting plate 520, thereby improving the stability of the entire box body 100 and reducing the vibration amplitude.

[0062] Preferably, the length of the transverse mounting beam 510 is set to be 6% longer than the width of the battery module 300. Under this setting, the stability and load-bearing performance of the entire mounting structure 500 will be achieved to the greatest extent.

[0063] See also Figures 1 to 8 The present application also provides a battery box, which includes a battery module 300 and a multi-layer battery box body of any of the above embodiments.

[0064] In one embodiment, the battery module 300 is spaced apart from the bottom of the accommodating layer 110 located above it in the height direction z of the box body 100. In this way, each layer is relatively independent, and the vibration of each layer during operation will not affect other layers, thereby reducing the vibration amplitude of the box body 100 and ensuring the normal operation and efficiency of the battery box.

[0065] Preferably, the spacing between the battery module 300 and the bottom of the accommodation layer 110 located above it is set to be greater than or equal to 12 mm. In this way, there is sufficient clearance between the battery module 300 and the bottom of the accommodation layer 110 to prevent vibration from affecting other layers. Here, the spacing between the battery module 300 and the bottom of the accommodation layer 110 located above it can be 12 mm, 13 mm, 14 mm, etc., and the specific value can be set according to actual conditions.

[0066] See also Figure 8 In the width direction y of the box body 100, there is a gap 600 between the inner wall of the first containing layer 111 and the outer wall of the battery module 300 installed on the first containing layer 111. The existence of the gap 600 increases the footprint of the battery box and lowers the center of gravity, thereby improving the stability of the battery box during operation.

[0067] In one embodiment, the number of gaps 600 is configured as two, and the two gaps 600 correspond to the positions of the battery modules 300 on both sides of the width direction y of the box body 100. A counterweight 700 is disposed in each gap 600, so that the weight of the box body 100 is increased by the counterweight 700 placed at the bottom, thereby further improving the stability and overall strength of the box body 100.

[0068] In this embodiment, the counterweight 700 is a metal block, and two counterweights 700 are provided. The installation positions of the two counterweights 700 are located on opposite sides of the battery module 300, and are symmetrically arranged with the battery module 300 as the symmetry axis. Of course, it is not limited to this, and the material, quantity and installation position of the counterweight 700 can be selected according to actual needs. Here, the metal block can be an iron block, a stainless steel block, etc.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A multi-layer battery box body, characterized in that: include: box body(100); A support structure (200) is installed in the box body (100) and divides the interior of the box body (100) into multiple accommodating layers (110), wherein the accommodating layers (110) are used to accommodate the battery module (300), and the support structure (200) is used to install the battery module (300); The support structure (200) comprises a longitudinal support beam (210), a transverse support beam (220) and a support plate (240); the longitudinal support beam (210) is provided in two pieces, and the two longitudinal support beams (210) are installed on opposite sides of the inner wall of the box body (100), and each longitudinal support beam (210) extends along the length direction of the box body (100); the transverse support beam (220) is provided in multiple pieces, and the multiple transverse support beams (220) are distributed at intervals, and the two ends of each transverse support beam (220) are respectively installed on the two longitudinal support beams (210) arranged oppositely; the support plate (240) is installed on the transverse support beam (220) and is used to carry the battery module (300).

2. The multi-layer battery box body according to claim 1, characterized in that: Both ends of the transverse support beam (220) are detachably mounted on the longitudinal support beam (210) via connecting pieces (221).

3. The multi-layer battery box body according to claim 2, characterized in that: An open slot (222) is formed on the end of the transverse support beam (220), and the connecting member (221) is arranged at a position corresponding to the open slot (222).

4. The multi-layer battery box body according to claim 1, characterized in that: The number of the transverse support beams (220) is set to N1, 3≤N1≤5.

5. The multi-layer battery box body according to claim 1, characterized in that: The multiple accommodating layers (110) are arranged along the height direction of the box body (100), and the multiple accommodating layers (110) are at least defined as a first accommodating layer (111) and a second accommodating layer (112); The second containing layer (112) is located above the first containing layer (111); and the battery module (300) located in the second containing layer (112) is mounted on the support plate (240).

6. The multi-layer battery box body according to claim 5, characterized in that: The first containing layer (111) is configured as a bottom layer in the height direction of the box body (100), and the remaining containing layers (110) are located above the first containing layer (111); Wherein, a mounting structure (500) is provided in the first containing layer (111), and the mounting structure (500) is used to mount the battery module (300) located in the first containing layer (111).

7. The multi-layer battery box body according to claim 6, characterized in that: The mounting structure (500) comprises a transverse mounting beam (510) and a mounting plate (520); the transverse mounting beam (510) is provided in plurality, the plurality of transverse mounting beams (510) are spaced apart along the length direction of the box body (100), and the transverse mounting beam (510) is connected to the bottom of the box body (100); the mounting plate (520) is connected to the transverse mounting beam (510) and is used for mounting the battery module (300) in the first containing layer (111).

8. The multi-layer battery box body according to claim 7, characterized in that: The cross section of the transverse mounting beam (510) is an "X"-shaped structure, and the mounting plate (520) is provided with a groove for accommodating the transverse mounting beam (510).

9. The multi-layer battery box body according to claim 7, characterized in that: The number of the transverse mounting beams (510) is set to N2, 3≤N2≤5.

10. A battery box, characterized in that: It comprises a battery module (300) and a multi-layer battery box body as claimed in any one of claims 5 to 9.

11. The battery box according to claim 10, characterized in that: In the height direction of the box body (100), the battery module (300) is spaced apart from the bottom of the containing layer (110) located above it.

12. The battery box according to claim 11, characterized in that: In the width direction of the box body (100), a gap (600) exists between the inner wall of the first containing layer (111) and the outer wall of the battery module (300) installed on the first containing layer (111).

13. The battery box according to claim 12, characterized in that: The multi-layer battery box body further comprises a counterweight (700), and the counterweight (700) is installed in the gap (600).

14. The battery box according to claim 13, characterized in that: The number of the gaps (600) is configured to be two, and the two gaps (600) correspond to positions of the battery module (300) on both sides in the width direction of the box body (100); The counterweight (700) is disposed in each of the two gaps (600), and the two counterweights (700) are symmetrically disposed with the battery module (300) as a symmetry axis.

Images