Modularized high-voltage power battery pack suitable for special vehicle

Abstract

The utility model discloses a modular high-voltage power battery pack suitable for a special vehicle in the technical field of power batteries, and the modular high-voltage power battery pack comprises a control box and a plurality of battery boxes, the control box is located on the uppermost layer, the plurality of battery boxes are detachably connected below the control box in sequence, and the plurality of battery boxes are detachably connected; the control box is electrically connected with the plurality of battery boxes, each battery box is composed of a shell assembly, a cylindrical battery cell module and a plurality of electronic components, the shell assembly comprises a front panel, a lower bottom plate, a rear panel, an upper cover plate, two side plates and a plurality of mounting lugs, the lower bottom plate, the upper cover plate and the two side plates are all aluminum alloy plates, and the cylindrical battery cell modules are electrically connected with the mounting lugs. Weight reduction grooves are formed in the surfaces of the supporting rods. The modularized battery solves the modularization problem of a high-voltage power battery pack of a new energy special vehicle, the installation and maintenance efficiency of the battery pack is remarkably improved, and the aluminum alloy material is used, so that the weight of the battery pack is effectively reduced and the energy efficiency of the whole vehicle is improved under the condition that the high strength of the battery pack is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to a modular high-voltage power battery pack suitable for special vehicles. Background Art

[0002] Against the backdrop of numerous serious challenges, including carbon emissions, environmental pollution, and the energy crisis, new energy vehicles have become a development trend in the automotive industry, and special-purpose vehicles are also gradually moving towards electrification. The power battery pack is the core component of new energy special-purpose vehicles. The battery box, as the primary component supporting and protecting the power battery, bears the external loads exerted on the power battery. The operating conditions of special-purpose vehicles are more severe than those of ordinary vehicles. The battery box shell can be subjected to impacts of up to 20G. Furthermore, their power requirements are higher, and the corresponding power battery pack voltage also increases. Existing power batteries struggle to achieve modularity and lightweighting while maintaining these performance indicators. Utility Model Content

[0003] The utility model is intended to provide a modular high-voltage power battery pack suitable for special vehicles, so as to solve the problem that existing power batteries cannot achieve modularization and lightweight while ensuring voltage and pressure resistance.

[0004] A modular high-voltage power battery pack suitable for special vehicles in this solution includes a control box and multiple battery boxes, wherein the control box is located on the top layer, and the multiple battery boxes are detachably connected to the bottom of the control box in turn, and the multiple battery boxes are detachably connected to each other, and the control box and the multiple battery boxes are electrically connected. The battery box consists of a shell assembly, a cylindrical battery cell module and multiple electronic components, and the shell assembly includes a front panel, a lower base plate, a rear panel, an upper cover plate, two side panels and multiple mounting ears. The lower base plate, the upper cover plate and the two side panels are all aluminum alloy plates, and weight-reducing grooves are opened on the surface.

[0005] The working principle and beneficial effects of this solution are as follows: This battery pack solves the modularization problem of high-voltage power battery packs for new energy special vehicles, significantly improving the installation and maintenance efficiency of the battery pack. Each battery pack can be independently installed and disassembled, greatly simplifying the installation and maintenance process. In the event of a fault, the problem module can be quickly troubleshooted and replaced, improving the availability and reliability of the battery pack. In addition, multiple modular battery boxes can effectively increase the overall voltage of the battery pack, making the battery pack much higher than the voltage level of traditional batteries, more in line with the use level of special vehicles, and greatly improving the power performance and endurance of special vehicles.

[0006] Aluminum alloy is used as the side panels, lower base and upper cover, which effectively reduces the weight of the battery pack while ensuring the high strength of the battery pack, thereby improving the energy efficiency of the entire vehicle. The opening of weight-reducing slots further reduces the weight of the battery box, ensuring the structural strength of the battery box under high load intensity in a lightweight environment, and improving the heat dissipation performance, extending the service life of the battery box, solving the problem of high strength and lightweight coexistence of power battery packs under high load.

[0007] Furthermore, multiple mounting ears are fixedly connected to the outside of the front and rear panels, and mounting holes are provided through the ears from top to bottom. Bolts are provided between two adjacent battery boxes, and the bolts pass through the mounting holes to secure the battery boxes. The mounting ears and mounting holes facilitate the installation and transportation of the battery boxes and also facilitate the connection of the entire battery pack to external devices after installation.

[0008] Furthermore, the front panel is provided with multiple electrical connectors that are electrically connected to the cylindrical battery modules, and both the front and rear panels are provided with multiple louvers. The electrical connectors facilitate connection between the battery and external devices, and the louvers provide a certain degree of waterproofing while dissipating heat.

[0009] Furthermore, the electronic components include a BMS, a fuse, etc. The BMS, the fuse, etc. can control and protect the electric energy in the cylindrical battery module.

[0010] Furthermore, the cylindrical cell module includes multiple cylindrical cells, and the battery box is fixedly connected to multiple stop bars. The multiple stop bars are divided into two groups, and the two groups of stop bars are fixedly connected to the upper cover and the lower base respectively. The stop bars of the upper cover and the stop bars of the lower cover correspond to each other. The multiple cylindrical cells are detachably connected between two adjacent stop bars. The stop bars are used to limit and fix the cylindrical cells to prevent them from shifting during transportation, which could pose a safety hazard.

[0011] Furthermore, the bars are serrated and made of non-metallic material. Multiple support posts are fixedly connected between two corresponding bars. Each of these support posts is fixedly connected to the bars and spaced equidistantly from each other. The non-metallic bars provide both position-limiting strength and insulation, and the large gap between the support posts and the bars facilitates the serial and parallel wiring of the cylindrical cell modules.

[0012] Furthermore, the control box is rectangular in shape and is constructed from thin aluminum alloy plates. Multiple lugs are fixedly connected to the front and rear sides of the control box, corresponding to the mounting lugs of the battery box. Internally, the control box houses components such as relays, pre-charge resistors, Hall effect sensors, and electrical connectors. The control box is used to control and manage the battery box, and the lugs are fixedly connected to the mounting lugs of the battery box using bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a modular high-voltage power battery pack suitable for special vehicles in the utility model;

[0014] Figure 2 This is a schematic structural diagram of the battery box 2 of the present utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure after removing part of the upper cover plate 205;

[0016] Figure 4 for Figure 1 Rear view;

[0017] Figure 5 for Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: control box 1, battery box 2, mounting ears 201, front panel 202, side panel 203, lower base plate 204, upper cover plate 205, rear panel 206, cylindrical battery module 207, stop bar 208, support column 209, and shutter 210.

[0020] The embodiment is basically as shown in the attached Figures 1 to 5 As shown: A modular high-voltage power battery pack suitable for special vehicles, including a control box 1 and four battery boxes 2. The control box 1 is a rectangular parallelepiped, and components such as relays, pre-charge resistors, Hall sensors, and electrical connectors are installed inside the control box 1. Two ears are fixedly connected near the bottom of the front and rear sides of the control box 1, and all four ears have mounting holes.

[0021] The battery box 2 is composed of a shell assembly, a cylindrical battery module 207 and a plurality of electronic components. The shell assembly includes a front panel 202, a rear panel 206, a lower base plate 204, an upper cover plate 205, two side panels 203 and four mounting ears 201. The upper cover plate 205, the lower base plate 204 and the two side panels 203 are all aluminum alloy plates, and weight-reducing grooves are provided on the surface. The four mounting ears 201 are fixedly connected to the front panel 202 and the rear panel 206 near the periphery, respectively. The four mounting ears 201 are all provided with mounting holes from top to bottom. The mounting holes of the four mounting ears 201 correspond to the mounting holes of the four support ears. Bolts are provided through the mounting ears 201. The control box 1 and the four battery boxes 2 are fixedly connected by bolts in turn. The front panel 202 is provided with a plurality of electrical connectors, which are electrically connected to the cylindrical battery module 207. The front panel 202 is provided with two shutters 210, and the rear panel 206 is provided with three shutters 210.

[0022] The cylindrical battery cell module 207 includes multiple cylindrical battery cells, which are combined in series and parallel. The upper cover 205 and the lower base plate 204 are fixedly connected to multiple bar 208 near the inside of the battery box 2. The bar 208 of the upper cover 205 and the lower base plate 204 correspond to each other one by one. The multiple cylindrical battery cells can be detachably connected between two adjacent bar 208. The bar 208 is serrated and made of non-metallic material. Multiple support columns 209 are provided between the corresponding bar 208 between the upper cover 205 and the lower base plate 204. The two ends of the multiple support columns 209 are fixedly connected to the bar 208 of the upper cover 205 and the lower base plate 204, and the spacing between the multiple support columns 209 is equidistant.

[0023] Positive and negative connector cables are provided between the control box 1 and the four battery boxes 2, and the control box 1 and the four battery boxes 2 are electrically connected through the positive and negative connector cables;

[0024] Multiple electronic components including BMS, fuses, etc.

[0025] The specific implementation process is as follows: when in use, the number of battery boxes 2 can be increased according to actual needs, and the cylindrical battery cell modules 207 in different battery boxes 2 can be connected to each other. Then, the adjacent battery boxes 2 or control boxes 1 can be fixed together with bolts and then installed on special vehicles for use. The structure is simple and composed of modular components. It can be changed at will according to the use of the vehicle, which is convenient for rapid disassembly and assembly of batteries and vehicles, and solves the problem of high strength and light weight of power battery packs under high loads. The power battery pack of this solution can withstand an impact of more than 20G, and based on the proportion of battery cells in the total weight, the energy ratio of the special battery exceeds 70%, which can effectively increase the actual endurance time of special vehicles.

[0026] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A modular high-voltage power battery pack suitable for special vehicles, characterized by: It includes a control box and multiple battery boxes, the control box is located on the top layer, the multiple battery boxes are detachably connected to the bottom of the control box in turn, and the multiple battery boxes are detachably connected to each other, and the control box and the multiple battery boxes are electrically connected. The battery box consists of a shell assembly, a cylindrical battery cell module and multiple electronic components. The shell assembly includes a front panel, a lower base plate, a rear panel, an upper cover plate, two side plates and multiple mounting ears. The lower base plate, the upper cover plate and the two side plates are all aluminum alloy plates, and the surfaces are provided with weight-reducing grooves.

2. A modular high-voltage power battery pack suitable for special vehicles according to claim 1, characterized in that: The plurality of mounting ears are respectively fixedly connected to the outer sides of the front panel and the rear panel. The mounting ears are provided with mounting holes from top to bottom. Bolts are provided between two adjacent battery boxes. The bolts pass through the mounting holes to fix the battery boxes.

3. The modular high-voltage power battery pack suitable for special vehicles according to claim 2, characterized in that: The front panel is provided with a plurality of electrical connectors, which are electrically connected to the cylindrical battery core modules. The front panel and the rear panel are both provided with a plurality of shutters.

4. A modular high-voltage power battery pack suitable for special vehicles according to claim 3, characterized in that: The electronic components include BMS, fuses, etc.

5. The modular high-voltage power battery pack suitable for special vehicles according to claim 4, characterized in that: The cylindrical battery cell module includes multiple cylindrical battery cells. Multiple gear bars are fixedly connected in the battery box. The multiple gear bars are divided into two groups. The two groups of gear bars are fixedly connected to the upper cover and the lower base respectively, and the gear bars of the upper cover and the gear bars of the lower cover correspond to each other. The multiple cylindrical battery cells can be detachably connected between two adjacent gear bars.

6. The modular high-voltage power battery pack suitable for special vehicles according to claim 5, characterized in that: The baffle is serrated and made of non-metallic material. A plurality of support columns are fixedly connected between two corresponding baffles. The plurality of support columns are all fixedly connected to the baffle, and the intervals between the plurality of support columns are equidistant.

7. The modular high-voltage power battery pack suitable for special vehicles according to claim 6, characterized in that: The control box is in the shape of a rectangular parallelepiped and is made of thin aluminum alloy plates. A plurality of ears are fixedly connected to the front and rear sides of the control box, and the plurality of ears correspond to the mounting ears of the battery box respectively. The control box is internally provided with components such as relays, pre-charging resistors, Hall sensors and electrical connectors.

Images