A multi-layer module load bearing structure and a multi-layer stacked battery pack

Abstract

The utility model discloses a kind of multilayer module load-bearing structure and multilayer stacked battery pack, it is related to power battery field, including battery module, heating plate, frame, cover plate, sleeve and assembly long screw rod;Battery module is fixed on heating plate, heating plate is equipped with heating element;One heating plate and a group of battery module are assembled into a small whole, then several layers of the small whole are stacked together and are assembled into a large whole by assembly long screw rod, heating plate is equipped with lifting threaded hole, the large whole is hoisted into frame by lifting hook, frame is equipped with mounting hole, frame side and top are equipped with cover plate and sealing gasket, frame, cover plate, sealing gasket, heating plate are fixed by fastening screw rod, heating plate plays the function of bearing battery module, and composed of sealed battery pack.The utility model can solve the problem that existing battery pack multilayer module is not good stacking, and lower shell few character beam load-bearing capacity is poor, battery pack is not firm enough, and the whole battery pack weight is relatively heavy.

Description

Technical Field

[0001] This utility model relates to the field of power battery manufacturing technology, and in particular to a multi-layer module load-bearing structure and a battery pack composed of multi-layer stacked modules. Background Technology

[0002] Most existing battery packs have a horizontally arranged module structure, with the modules fixed to the Z-shaped beams on the lower housing. Heating plates are fixed to the bottom of the modules and are not used as load-bearing components. Figure 1 As shown. This structure has the problems of difficulty in stacking several modules, poor load-bearing capacity of the lower casing's Z-beams, insufficient battery pack sturdiness, and relatively heavy overall battery pack weight. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a multi-layer module load-bearing structure and a multi-layer stacked battery pack. It can solve the problems of existing battery packs where multi-layer modules are difficult to stack, the lower shell Z-beam has poor load-bearing capacity, the battery pack is not reliable enough, and the overall battery pack is relatively heavy. To solve the above problems, the technical solution of this utility model is as follows: This multi-layer module load-bearing structure and multi-layer stacked battery pack includes multiple sets of battery modules and multiple heating plates, and also includes a frame, cover plate, sealing gasket, sleeve and assembly long screw; the frame is provided with mounting holes, the heating plate is fixed in the frame as a load-bearing component, the battery module is fixed to the heating plate through the mounting holes and bolts, and the heating plate is provided with heating elements to transfer heat to the battery cells; one heating plate and one set of battery modules are first assembled into a small unit by fastening screws, and then several layers of the small units are stacked together and assembled into a large unit by the assembly long screw passing through the sleeve. The heating plate is provided with lifting threaded holes, and the large unit is lifted into the frame by a hook. The cover plate and the sealing gasket are provided on the side and top of the frame, and the heating plate, the frame and the battery modules are sealed and installed by the cover plate, the sealing gasket and the fastening screw.

[0004] A more specific solution to the above technical solution is that the frame is made of multiple longitudinal and transverse solid aluminum strips welded together, making the battery pack robust and lightweight.

[0005] Furthermore, the heating plate is made of carbon steel plate with strong load-bearing capacity.

[0006] Furthermore, the heating element is a heating wire or a heating film.

[0007] A multi-layer stacked battery pack includes multiple battery modules, multiple heating plates, a frame, a cover plate, a sealing gasket, a sleeve, and an assembly long screw. The frame has mounting holes, and the battery modules are fixed to the heating plates, which are equipped with heating elements. One heating plate and one set of battery modules are first assembled into a small unit by fastening screws. Then, several layers of the small units are stacked together and assembled into a large unit by the assembly long screw passing through the sleeve. The heating plates have lifting threaded holes, and the large unit is lifted into the frame by a hook. The cover plate and the sealing gasket are provided on the sides and top of the frame. The heating plates, the sealing gasket, and the fastening screws seal the heating plates, the frame, and the battery modules. The frame is welded from solid aluminum strips. The heating plates are made of carbon steel. The heating elements are heating wires or heating films.

[0008] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: The frame of this utility model is welded from solid aluminum strips, making the battery pack sturdy and lightweight. The heating plate, as a load-bearing component, is made of carbon steel, giving it a strong load-bearing capacity. During assembly, a heating plate and a set of modules are assembled into a whole by screws. The heat from the heating plate is transferred to the battery cells, and the temperature of each module is relatively uniform. The multi-layer module stacking structure is easy to install and reliable, solving the problem of difficult stacking of multiple modules. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a battery pack structure in the prior art; Figure 2 This is a schematic diagram of the battery pack structure of this utility model.

[0010] The labels in the diagram represent: 1. Battery module; 2. Heating plate; 3. Heating element; 4. Hook threaded hole; 5. Frame; 6. Fastening screw; 7. Cover plate; 8. Sealing gasket; 9. Sleeve; 10. Assembly long screw. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a battery pack structure in the prior art. Most battery packs have a horizontally arranged structure of several modules, with the modules fixed to the Z-shaped beams on the lower housing. The heating plates are fixed to the bottom of the modules, with the Z-shaped beams serving as load-bearing components while the heating plates do not. The defects of this structure have been described in the background section and will not be repeated here.

[0012] Figure 2The multi-layer module load-bearing structure and multi-layer stacked battery pack include multiple battery modules 1, multiple heating plates 2, a frame 5, a cover plate 7, a sealing gasket 8, a sleeve 9, and an assembly long screw 10. The frame 5 is welded together from multiple longitudinal and transverse solid aluminum strips, making the battery pack robust and lightweight. The heating plates 2 are made of carbon steel, giving them strong load-bearing capacity. The frame 5 has mounting holes, and the heating plates 2 are fixed to the frame 5 as load-bearing components. The battery modules 1 are fixed to the heating plates 2. The heating plates 2 have heating elements 3, which transfer heat to the battery cells. The heating elements 3 are heating wires or heating films. In this embodiment, the heating plates 2 have heating wires 3.

[0013] During assembly, a heating plate 2 and a set of battery modules 1 are first assembled into a small unit using fastening screws 6. Then, several layers of heating plates 2 and several layers of battery modules 1 are stacked together and assembled into a large unit using assembly screws 10. The heating plate 2 is provided with lifting threaded holes, and the large unit is lifted into the frame 5 using a lifting hook. Then, the heating plate 2, frame 5, and cover plate 7 are connected by fastening screws 6. After all components, including BMS and electrical connections, are assembled, the sides and top of the frame 5 are provided with sealing gaskets 8 and cover plates 7 for sealing installation, thus completing the assembly of the multi-layer stacked battery pack of this utility model.

Claims

1. A multi-layer module load-bearing structure, comprising multiple battery modules (1) and multiple heating plates (2), characterized in that: It also includes a frame (5), a cover plate (7), a sealing gasket (8), a sleeve (9), and an assembly long screw (10); the frame (5) is provided with mounting holes, the battery module (1) is fixed on the heating plate (2), and the heating plate (2) is provided with heating elements (3); a heating plate (2) and a group of battery modules (1) are first assembled into a small whole by fastening screws (6), and then several layers of the small whole are stacked together and assembled into a large whole by the assembly long screw (10) passing through the sleeve (9). The heating plate (2) is provided with lifting thread holes, and the large whole is lifted into the frame (5) by a hook. The cover plate (7) and the sealing gasket (8) are provided on the side and top of the frame (5). The heating plate (2), the frame (5), and the battery module (1) are sealed and installed by the cover plate (7), the sealing gasket (8), and the fastening screw (6).

2. The multi-layer modular load-bearing structure according to claim 1, characterized in that: The frame (5) is made of solid aluminum strips welded together.

3. A multi-layer modular load-bearing structure according to claim 1 or 2, characterized in that: The heating plate (2) is made of carbon steel.

4. The multi-layer modular load-bearing structure according to claim 3, characterized in that: The heating element (3) is a heating wire or a heating film.

5. A multi-layer stacked battery pack, characterized in that: A battery pack comprising a multi-layer module load-bearing structure as described in any one of claims 1 to 4.

Images