Battery box and battery system

Abstract

The utility model discloses a battery box body and a battery system. A battery box comprises a bottom plate, a beam assembly and a first connecting assembly. The beam assembly is arranged on the bottom plate, a mounting cavity is defined by the beam assembly and the bottom plate, and the mounting cavity is used for mounting the battery module; the beam assembly comprises a first end beam, a first edge beam, a second end beam and a second edge beam which are sequentially connected, the first end beam and the second end beam are oppositely arranged, and the first edge beam and the second edge beam are oppositely arranged. The first connecting assembly is arranged at the top of the first edge beam and comprises a first mounting plate and a second mounting plate which are connected, the first mounting plate is provided with a first mounting part, the second mounting plate is provided with a second mounting part, and the first mounting part and the second mounting part are both used for mounting a battery module; and the first mounting part is higher than the second mounting part. According to the battery box body, the number of stacked layers of the battery modules can be increased, the endurance mileage and the power performance of a battery system are improved, and the requirement of a heavy truck on the battery system is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a battery box and a battery system. BACKGROUND

[0002] In the field of new energy vehicles, especially in the development process of heavy trucks, as the requirements for the endurance mileage and power performance of new energy vehicles continue to improve, the demand for the power of the vehicle-mounted battery system also increases. The multi-layer stacking of the battery module can improve the endurance mileage and power performance of the new energy vehicle.

[0003] In the related art, the battery module is arranged in the beam assembly, but the space in the beam assembly is limited, which limits the number of stacked layers of the battery module, thereby limiting the endurance mileage and power performance of the battery system, and the requirements of the heavy truck for the battery system cannot be met. SUMMARY

[0004] The main purpose of the utility model is to provide a battery box and a battery system, which aims to solve the technical problems of the battery box of the related art, limiting the number of stacked layers of the battery module, and being unable to meet the requirements of the heavy truck for the battery system.

[0005] In order to achieve the above-mentioned utility model purposes, the utility model discloses a battery box in the first aspect.

[0006] A battery box comprises:

[0007] a bottom plate;

[0008] a beam assembly arranged on the bottom plate, wherein the beam assembly and the bottom plate enclose an installation cavity for installing a battery module, the beam assembly comprises a first end beam, a first side beam, a second end beam and a second side beam connected in sequence, the first end beam and the second end beam are arranged oppositely, and the first side beam and the second side beam are arranged oppositely; and

[0009] a first connecting assembly arranged on the top of the first side beam, the first connecting assembly comprises a first mounting plate and a second mounting plate connected with each other, the first mounting plate is provided with a first mounting portion, the second mounting plate is provided with a second mounting portion, the first mounting portion and the second mounting portion are both used for mounting the battery module, and the height of the first mounting portion is higher than that of the second mounting portion.

[0010] In one embodiment, the first mounting plate and the second mounting plate are arranged at an angle.

[0011] In one of the embodiments, the first connecting assembly comprises a first connecting plate and a second connecting plate, the first connecting plate is arranged on the top of the first side beam, one end of the second connecting plate is connected with the first connecting plate, the other end is connected with the first mounting plate and the second mounting plate respectively, and the second connecting plate is arranged in an inclined manner away from the first side beam.

[0012] In one of the embodiments, the first mounting plate is provided with a first stepped structure at one end away from the second mounting plate, and the second mounting portion is arranged between the first stepped structure and the first mounting plate.

[0013] In one of the embodiments, the first mounting plate is provided with a first stepped structure at one end away from the second mounting plate, and the second mounting portion is arranged between the first stepped structure and the first mounting plate.

[0014] In one of the embodiments, the first connecting assembly is arranged in multiple, and the multiple first connecting assemblies are arranged in intervals along the length direction of the first side beam.

[0015] In one of the embodiments, the battery box comprises a second connecting assembly arranged on the top of the second side beam, and the second connecting assembly is arranged in the same horizontal plane as the first connecting assembly.

[0016] In one of the embodiments, the battery box comprises a reinforcing member, one end of the reinforcing member is connected with the side of the first connecting assembly facing the second connecting assembly, the other end is connected with the side of the second connecting assembly facing the first connecting assembly, and the bottom of the reinforcing member is connected with the bottom plate.

[0017] In one of the embodiments, the second connecting assembly comprises a third mounting plate and a fourth mounting plate, the third mounting plate is provided with a third mounting portion, the fourth mounting plate is provided with a fourth mounting portion, the third mounting portion and the fourth mounting portion are used for mounting the battery module, and the height of the third mounting portion is higher than the height of the fourth mounting portion.

[0018] The third mounting plate and the fourth mounting plate are arranged at an angle;

[0019] The second connecting assembly comprises a third connecting plate and a fourth connecting plate, the third connecting plate is arranged on the top of the second side beam, one end of the fourth connecting plate is connected with the third connecting plate, the other end is connected with the third mounting plate and the fourth mounting plate respectively, and the fourth connecting plate is arranged in an inclined manner away from the second side beam.

[0020] The fourth mounting plate is provided with a second stepped structure at one end away from the third mounting plate, and the fourth mounting portion is arranged between the second stepped structure and the third mounting plate.

[0021] The third mounting plate is provided with a second avoiding opening.

[0022] The second connecting assemblies are arranged in a plurality of numbers and are arranged at intervals along the length direction of the second side beam.

[0023] The utility model discloses a second aspect proposes a kind of battery system, including above-mentioned battery box.

[0024] Beneficial effects:

[0025] The utility model discloses a battery box, including bottom plate, beam component and first connecting component.

[0026] Beam component is arranged on bottom plate, and beam component and bottom plate are enclosed into mounting cavity, and mounting cavity is used for installing battery module. Beam component includes first end beam, first side beam, second end beam and second side beam connected in sequence, and first end beam and second end beam are oppositely arranged, and first side beam and second side beam are oppositely arranged. First connecting component, first connecting component is arranged at the top of first side beam, and first connecting component includes first mounting plate and second mounting plate connected, first mounting plate is provided with first mounting portion, and second mounting portion is provided on second mounting plate, and first mounting portion and second mounting portion are used for installing battery module, and the height of first mounting portion is higher than the height of second mounting portion. The first mounting portion and second mounting portion of different height can realize the installation of multilayer stacked battery module, and multilayer stacked battery module is arranged at the top of first side beam, without occupying the space in beam component, can improve the stacking number of battery module, to improve the endurance mileage and power performance of battery system, satisfy the requirement of heavy truck to battery system. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structural schematic diagram of the battery box of one embodiment of the utility model.

[0028] Figure 2 It is Figure 1 The enlarged view of A of

[0029] Figure 3 It is the enlarged view of B of Figure 1

[0030] Among them:

[0031] 100, bottom plate;

[0032] 200, beam component;210, first end beam;220, first side beam;230, second end beam;240, second side beam;

[0033] ​300, First connecting assembly; 310, First mounting plate; 311, First mounting part; 312, First clearance opening; 320, Second mounting plate; 321, Second mounting part; 322, First stepped structure; 330, First connecting plate; 340, Second connecting plate;

[0034] 400. Second connecting assembly; 410. Third mounting plate; 411. Third mounting part; 412. Second clearance opening; 420. Fourth mounting plate; 421. Fourth mounting part; 422. Second stepped structure; 430. Third connecting plate; 440. Fourth connecting plate;

[0035] 500. Reinforcing components.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.

[0041] In some embodiments, a battery system includes a battery box.

[0042] As shown in Figure 1 and Figure 2 In some embodiments, a battery box is applied to the above-mentioned battery system. The battery box includes a bottom plate 100, a beam assembly 200 and a first connecting assembly 300. The beam assembly 200 is arranged on the bottom plate 100, and the beam assembly 200 and the bottom plate 100 enclose an installation cavity for installing battery modules. The beam assembly 200 includes a first end beam 210, a first side beam 220, a second end beam 230 and a second side beam 240 connected in sequence, the first end beam 210 and the second end beam 230 are oppositely arranged, and the first side beam 220 and the second side beam 240 are oppositely arranged. The first connecting assembly 300 is arranged on the top of the first side beam 220, and the first connecting assembly 300 includes a first mounting plate 310 and a second mounting plate 320 connected in sequence. The first mounting plate 310 is provided with a first mounting portion 311, and the second mounting plate 320 is provided with a second mounting portion 321. The first mounting portion 311 and the second mounting portion 321 are used for mounting battery modules, and the height of the first mounting portion 311 is higher than the height of the second mounting portion 321.

[0043] During work, the first mounting portion 311 and the second mounting portion 321 with different heights can realize the installation of multi-layer stacked battery modules. The height of the first mounting portion 311 is higher than the height of the second mounting portion 321, the battery module installed on the first mounting portion 311 is higher than the battery module installed on the second mounting portion 321, thereby realizing the installation of battery modules with different heights. The multi-layer stacked battery modules are arranged on the top of the first side beam 220, without occupying the space in the beam assembly 200, so that the number of stacked layers of the battery modules can be improved, thereby improving the endurance mileage and power performance of the battery system, and meeting the requirements of heavy trucks on the battery system.

[0044] Specifically, the first mounting portion 311 and the second mounting portion 321 can be first threaded holes, and the battery module is provided with second threaded holes matched with the first threaded holes, and the first threaded holes and the second threaded holes are penetrated by threaded fasteners, so as to realize the connection between the first mounting portion 311 and the second mounting portion 321 and the battery module.

[0045] Specifically, the bottom plate 100 provides bottom support for the entire box structure. The bottom plate 100 can be a bottom guard plate. The bottom plate 100 can be a rectangular plate.

[0046] Specifically, the beam assembly 200 is installed on the bottom plate 100, and the beam assembly 200 and the bottom plate 100 jointly enclose an installation cavity. The installation cavity is a space for placing the battery module.

[0047] Specifically, the beam assembly 200 can be a regular rectangular frame structure. The first end beam 210, the first side beam 220, the second end beam 230, and the second side beam 240 can all be rectangular plate structures. The first end beam 210 and the second end beam 230 are arranged in parallel. The first side beam 220 and the second side beam 240 are arranged in parallel.

[0048] It should be noted that, since the first end beam 210 and the second end beam 230 are arranged in parallel, when the battery module is placed in the installation cavity, the pressure generated by the weight of the battery module in the length direction of the box structure can be evenly distributed on the first end beam 210 and the second end beam 230. Similarly, the first side beam 220 and the second side beam 240 are arranged in parallel, so that the pressure of the battery module in the width direction of the box structure can be evenly distributed on the first side beam 220 and the second side beam 240. The parallel rectangular frame structure has good stability. The corners of the rectangular frame can effectively transmit and disperse force, so that the entire box structure can maintain a stable shape and is not easy to twist or deform.

[0049] In some embodiments, the first mounting plate 310 and the second mounting plate 320 are arranged at an angle. Specifically, the first mounting plate 310 is arranged vertically with the second mounting plate 320. The first mounting plate 310 is arranged in a vertical direction. The second mounting plate 320 is arranged in a horizontal direction.

[0050] It should be noted that, since the first mounting plate 310 is vertical, when the battery module is connected with the first mounting portion 311 on the first mounting plate 310, the force of the battery module in the direction of gravity can be directly transmitted to the first side beam 220 through the first mounting plate 310. The first mounting plate 310 mainly bears vertical tensile force or pressure.

[0051] The second mounting plate 320 can be horizontally arranged. The second mounting plate 320 is used to bear the force in the horizontal direction of the battery module. When the battery module is subjected to the force in the horizontal direction such as the inertial force generated by the lateral acceleration during the driving of the vehicle, the acting force acts on the second mounting plate 320, and then is transmitted to the first side beam 220 through the second mounting plate 320. The forces in the vertical and horizontal directions are respectively borne by the plates in different directions, which facilitates the reasonable dispersion and bearing of the external force borne by the battery module.

[0052] In addition, the first mounting plate 310 and the second mounting plate 320 are arranged vertically to form a stable right-angle structure. When bearing the weight and external force of the battery module, the structure can effectively prevent the first connecting assembly 300 from being twisted or deformed itself.

[0053] In some embodiments, the first connecting assembly 300 includes a first connecting plate 330 and a second connecting plate 340, the first connecting plate 330 is arranged at the top of the first side beam 220, one end of the second connecting plate 340 is connected with the first connecting plate 330, the other end is respectively connected with the first mounting plate 310 and the second mounting plate 320, and the second connecting plate 340 is arranged obliquely away from the first side beam 220, so that the battery module fixed by the first mounting plate 310 and the second mounting plate 320 is located directly above the bottom plate 100, which facilitates the reasonable planning of the height and spacing of each layer of battery module, thereby installing more battery modules in the limited box, and improving the energy density of the battery system.

[0054] In some embodiments, the second mounting plate 320 has a first stepped structure 322 at the end away from the first mounting plate 310, and a second mounting portion 321 is arranged between the first stepped structure 322 and the first mounting plate 310. The second mounting portion 321 can mount the battery module, and the first stepped structure 322 can provide additional support and limiting action in the local area of the edge or bottom of the battery module.

[0055] In some embodiments, the first mounting plate 310 is provided with a first avoiding opening 312. The first avoiding opening 312 can avoid the installation path of the copper bar.

[0056] In some embodiments, the first connecting assembly 300 is arranged in multiple numbers, and the multiple first connecting assemblies 300 are arranged at intervals along the length direction of the first side beam 220.

[0057] In some embodiments, the first mounting plate 310 and the second mounting plate 320 are arranged in multiple numbers, and the multiple first mounting plates 310 and the multiple second mounting plates 320 are arranged one by one. The multiple first mounting plates 310 and the multiple second mounting plates 320 are arranged at intervals along the length direction of the first side beam 220.

[0058] In some embodiments, the battery housing includes a second connecting assembly 400, which is disposed on the top of the second side beam 240 and is arranged along the same horizontal plane as the first connecting assembly 300. The second connecting assembly 400 and the first connecting assembly 300 have the same structure. The first connecting assembly 300 and the second connecting assembly 400 fix the battery module from both sides of the housing, effectively limiting the displacement and sway of the battery module in the width direction. The synergistic effect of the second connecting assembly 400 and the first connecting assembly 300 enhances the structural strength of the housing in the top region.

[0059] In some embodiments, the battery housing includes a reinforcing member 500. One end of the reinforcing member 500 is connected to the side of the first connecting assembly 300 facing the second connecting assembly 400, and the other end is connected to the side of the second connecting assembly 400 facing the first connecting assembly 300. The bottom of the reinforcing member 500 is connected to the base plate 100. The reinforcing member 500 can improve the overall stability of the housing structure and effectively prevent housing deformation. Specifically, the reinforcing member 500 can be a reinforcing beam.

[0060] like Figure 3 As shown, in some embodiments, the second connection component 400 includes a third mounting plate 410 and a fourth mounting plate 420. The third mounting plate 410 has a third mounting portion 411, and the fourth mounting plate 420 has a fourth mounting portion 421. Both the third mounting portion 411 and the fourth mounting portion 421 are used to mount the battery module, and the height of the third mounting portion 411 is higher than the height of the fourth mounting portion 421.

[0061] Specifically, the third mounting plate 410 and the fourth mounting plate 420 are arranged at an angle.

[0062] Specifically, the second connecting assembly 400 includes a third connecting plate 430 and a fourth connecting plate 440. The third connecting plate 430 is disposed on the top of the second side beam 240. One end of the fourth connecting plate 440 is connected to the third connecting plate 430, and the other end is connected to the third mounting plate 410 and the fourth mounting plate 420 respectively. The fourth connecting plate 440 is inclined in a direction away from the second side beam 240.

[0063] Specifically, the end of the fourth mounting plate 420 away from the third mounting plate 410 has a second stepped structure 422, and a fourth mounting part 421 is provided between the second stepped structure 422 and the third mounting plate 410.

[0064] Specifically, the third mounting plate 410 has a second clearance opening 412.

[0065] Specifically, there are multiple third mounting plates 410 and multiple fourth mounting plates 420, with each of the multiple third mounting plates 410 and multiple fourth mounting plates 420 corresponding to one another.

[0066] Specifically, multiple third mounting plates 410 and multiple fourth mounting plates 420 are all spaced apart along the length of the second side beam 240.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A battery case characterized by comprising: The battery box body comprises a bottom plate, a beam assembly, and a first connecting assembly. The beam assembly is arranged on the bottom plate and encloses the mounting cavity with the bottom plate, and the mounting cavity is used for mounting the battery module. The first connecting assembly is arranged on the top of the first side beam and comprises a first mounting plate and a second mounting plate connected with each other. The first mounting plate is provided with a first mounting portion, and the second mounting plate is provided with a second mounting portion.

2. The battery pack of claim 1, wherein, The first mounting portion and the second mounting portion are used for mounting the battery module, and the height of the first mounting portion is higher than the height of the second mounting portion.

3. The battery pack of claim 1, wherein, The first mounting plate and the second mounting plate are arranged at an angle.

4. The battery pack of claim 1, wherein, The first connecting assembly comprises a first connecting plate and a second connecting plate.

5. The battery pack of claim 1, wherein, The first connecting plate is arranged on the top of the first side beam, one end of the second connecting plate is connected with the first connecting plate, the other end is connected with the first mounting plate and the second mounting plate respectively, and the second connecting plate is arranged obliquely away from the first side beam.

6. The battery pack of claim 1, wherein, The second mounting plate is provided with a first stepped structure away from the first mounting plate.

7. The battery pack of claim 1, wherein, The first mounting plate is provided with a first avoiding opening.

8. The battery pack of claim 7, wherein, A plurality of first connecting assemblies are arranged along the length direction of the first side beam.

9. The battery pack of claim 7, wherein, The battery box body comprises a second connecting assembly arranged on the top of the second side beam. The second connecting assembly is arranged on the same horizontal plane with the first connecting assembly. The battery box body comprises a reinforcing piece. One end of the reinforcing piece is connected with the side of the first connecting assembly facing the second connecting assembly, and the other end is connected with the side of the second connecting assembly facing the first connecting assembly. The bottom of the reinforcing piece is connected with the bottom plate. The second connecting assembly comprises a third mounting plate and a fourth mounting plate. The third mounting plate is provided with a third mounting portion, and the fourth mounting plate is provided with a fourth mounting portion. The third mounting portion and the fourth mounting portion are used for mounting the battery module, and the height of the third mounting portion is higher than the height of the fourth mounting portion. The third mounting plate and the fourth mounting plate are arranged at an angle. The second connecting assembly comprises a third connecting plate and a fourth connecting plate. The third connecting plate is arranged on the top of the second side beam, one end of the fourth connecting plate is connected with the third connecting plate, and the other end is connected with the third mounting plate and the fourth mounting plate respectively. The fourth mounting plate is provided with a second stepped structure away from the third mounting plate. The third mounting plate is provided with a second avoiding opening. A plurality of second connecting assemblies are arranged along the length direction of the second side beam.

10. A battery system characterized by, The battery case according to any one of claims 1 to 9.

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