CN219435999U - Layered forklift lithium battery box - Google Patents

Abstract

The utility model relates to the technical field of battery assembly and discloses a layered forklift lithium battery box body, which comprises a lower box body, wherein a module fixing frame is symmetrically fixed at the inner bottom of the lower box body, a lithium battery module is fixed on the upper surface of the module fixing frame, two groups of reinforcing plate ribs are symmetrically fixed on the inner side wall of the lower box body, square plate ribs are fixed on the surface of each group of reinforcing plate ribs, a module supporting plate is fixed between the square plate ribs, a beam bracket is fixed on the side wall of the module supporting plate, a BMS management system is fixed on the upper surface of the module supporting plate, an upper box body is fixed on the upper surface of the lower box body, a middle layer plate is fixed between the lower box body and the upper box body, and an upper layer bracket is fixed on the upper surface of the middle layer plate. The utility model realizes the internal arrangement optimization of the battery box body structure, further optimizes the assembly process, reduces the influence of the discharging of the battery module on the electric elements and stabilizes the signal output.

Description

Layered forklift lithium battery box

Technical Field

The utility model relates to the technical field of battery assembly, in particular to a layered forklift lithium battery box body.

Background

Along with the rapid development of lithium battery technology, electric forklifts carrying lithium batteries are increasingly popular with customers, products of lithium battery forklifts are also increasingly abundant, and output is increased year by year, but at present, lithium battery PACK packages used by lithium battery forklifts mainly take boxes as main materials, lithium battery modules and BMS management systems adopt an integrally-stored assembly method, namely, the BMS management systems are directly placed above the lithium battery modules, or the lithium battery modules and the BMS management systems are packaged and mixed together, so that the following problems often exist in the traditional design structure:

the design structure of lithium battery module and BMS management system mixed dress is comparatively traditional, and lithium battery module and BMS management system two parts are easy mutual interference, and lithium battery module can often influence BMS management system's signal stability at heavy current charging or put single process, so that BMS management system's communication trouble receives the interference so that whole lithium battery PACK package can't normally work.

The integrated mixed design of the lithium battery module and the BMS management system cannot realize the continuous assembly process of the lithium battery module and the BMS management system, so that the packaging and assembly efficiency of the lithium battery PACK is low, and meanwhile, the assembly method can also cause poor consistency of products.

Lithium battery module and BMS management system integral type mix dress design structure can lead to the modularization reduction of product, all causes very big inconvenience to the after-sales maintenance of lithium battery PACK package and the change of electric components and parts, does not utilize the after-sales maintenance of product.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model aims to provide a layered forklift lithium battery box body, realize the internal arrangement optimization of the battery box body structure, further optimize the assembly process, reduce the influence of battery module discharging on electric elements and stabilize signal output.

The layered forklift lithium battery box body comprises a lower box body, wherein a module fixing frame is symmetrically fixed at the inner bottom of the lower box body, a lithium battery module is fixed on the upper surface of the module fixing frame, two groups of reinforcing plate ribs are symmetrically fixed on the inner side wall of the lower box body, square plate ribs are fixed on the surface of each group of reinforcing plate ribs, a module supporting plate is fixed between the square plate ribs, a beam bracket is fixed on the side wall of the module supporting plate, a BMS management system is fixed on the upper surface of the module supporting plate, an upper box body is fixed on the upper surface of the lower box body, a middle layer plate is fixed between the lower box body and the upper box body, an upper layer bracket is fixed on the upper surface of the middle layer plate, and an electric control box is fixed on the surface of the upper layer bracket.

Preferably, electrical components such as a relay, a fuse and the like are integrally arranged in the electrical control box.

Preferably, the top of going up the box is fixed with the case lid, the surface mounting of case lid has the battery plug-in components that discharge, the lateral wall of going up the box is provided with the battery plug-in components that charge, the lateral wall of going up the box just is provided with the communication plug-in components in the one side that is located the battery plug-in components that charges.

Preferably, a plurality of lifting lugs are symmetrically fixed on the upper surface of the lower box body and positioned on the periphery of the upper box body.

The beneficial effects of the utility model are as follows:

1. the BMS management control system is divided into a BMS signal unit and an electrical control unit, the BMS signal unit and the electrical control unit adopt a layered design structure, the BMS signal unit and the electrical control unit are isolated and designed by an isolation method, the BMS signal unit adopts a closed structure, and the stability of BMS signal transmission in the working process of a lithium battery PACK package is guaranteed.

2. The lithium battery module, the BMS signal unit and the electric control unit adopt a layered design structure, the lithium battery module is arranged on the lower layer of the lithium battery box body, the weight of the lithium battery module is utilized to reduce the gravity center of the whole lithium battery box body, and the stability of the whole lithium battery PACK PACK is improved; the BMS electrical signal unit is isolated from the lithium battery module by a partition plate, and is separately isolated and arranged in the middle layer by adopting a closed structure, so that stable transmission of BMS signals is ensured, and magnetic field interference caused by high-current charge and discharge of the lithium battery module is avoided; the electrical control unit is arranged on the upper layer of the lithium battery PACK PACK, and because failures such as failure, damage and the like can occur to the electrical components, the electrical control unit is arranged at the uppermost end of the layered design, so that the electrical control unit is convenient to after-market and maintain.

3. The lithium battery PACK adopts a layered design structure to realize a modularized design method of a lithium battery module, a BMS signal unit and an electrical control unit, so that a pipelined assembly process of the lithium battery PACK can be realized, the production efficiency of products is improved, and meanwhile, the modularized design method can improve the product consistency of the lithium battery PACK.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a layered forklift lithium battery box body provided by the utility model.

Fig. 2 is a schematic diagram of a lower case body inner installation structure of a layered forklift lithium battery case body provided by the utility model.

Fig. 3 is a schematic diagram of the internal structure of the lower case of the layered forklift lithium battery case provided by the utility model.

In the figure: the battery module comprises a 1-lower box body, a 2-module fixing frame, a 3-lithium battery module, a 4-reinforcing plate rib, a 5-square plate rib, a 6-module supporting plate, a 7-beam bracket, an 8-BMS management system, a 9-upper box body, a 10-middle layer plate, a 11-upper layer bracket, a 12-electric appliance control box, a 13-upper box cover, a 14-battery discharging plug-in unit, a 15-battery charging plug-in unit, a 16-communication plug-in unit and a 17-lifting lug.

Detailed Description

Referring to fig. 1-3, a layered forklift lithium battery box body comprises a lower box body 1, wherein a module fixing frame 2 is symmetrically fixed at the inner bottom of the lower box body 1, a lithium battery module 3 is fixed at the upper surface of the module fixing frame 2, two groups of reinforcing plate ribs 4 are symmetrically fixed at the inner side wall of the lower box body 1, square plate ribs 5 are fixed on the surface of each group of reinforcing plate ribs 4, a module supporting plate 6 is fixed between the square plate ribs 5, a beam bracket 7 is fixed on the side wall of the module supporting plate 6, a BMS management system 8 is fixed at the upper surface of the module supporting plate 6, an upper box body 9 is fixed at the upper surface of the lower box body 1, a middle layer plate 10 is fixed between the lower box body 1 and the upper box body 9, an upper layer bracket 11 is fixed at the upper surface of the middle layer plate 10, an electric control box is fixed on the surface of the upper layer bracket 11, the box body is formed by mutually welding high-strength thin-wall metal plates, and the metal plates can reinforce the box body structure in a full welding mode by adopting square rib plates for further reinforcing the box body structure, and two sides of the box body are reinforced by adopting square rib plates for stabilizing the box body; the lithium battery module 3 is fixed on the module fixing frame 2 by adopting a mortise-tenon structure, and the module fixing frame 2 is fixed on the box bottom plate metal plate by adopting a welding mode, so that the module is tightly fixed on the box bottom plate, and the module is prevented from shaking; the module backup pad 6 adopts the bolt fastening on square gusset, mainly is used for placing lithium cell module 3, in order to guarantee the stability of lithium cell module 3, adopts the welding mode to fix crossbeam support 7 and module backup pad 6, in order to guarantee the stability of upper module simultaneously, adopts deep floor further to consolidate in the below of square gusset, and the fluting design of backup pad is in order to improve lithium cell module 3's radiating efficiency, avoids the overheated influence of module. The layering of adopting upper and lower two-layer between the battery module relates to the method, not only improves the space utilization of lower box 1, and the mode is arranged to the module of layering simultaneously and is favorable to the heat dissipation between assembly and the module, avoids the overheated unable steady operation of lithium cell PACK package that leads to of module.

The electrical control box 12 is internally integrated with electrical components such as a relay, a fuse and the like, the middle layer part and the upper layer part are mainly stored in the upper box 9 part, and the middle layer part is mainly used for storing a BMS signal unit, wherein the middle layer plate 10 is positioned above a module and is welded with a box metal plate of the lower box 1, the BMS signal unit is suspended above and is further separated from the lithium battery module 3, meanwhile, due to the isolation of the middle layer plate 10 and the safety gap between the middle layer plate 10 and the module, the interference of large current of the lithium battery module 3 on signals in the operation process is avoided, and the normal and stable operation of the BMS signal unit is ensured; the upper layer part is mainly used for storing the electric control units and mainly comprises electric components such as a relay, a fuse and the like, and the electric components are integrated in the electric control box, so that on one hand, the electric control units are isolated from the BMS signal units, the signal interference of control circuits is avoided, and on the other hand, the electric control units are arranged on the upper layer, so that the upper battery cover 13 is conveniently and directly opened for overhauling and maintaining the battery upper cover; the upper bracket 11 is mounted on the middle layer board 10 by bolts, the electric control box is used for storing the air hole unit, the electric control box is fixed on the upper bracket 11, and the electric control box is used for protecting the electric control unit on one hand and isolating the electric control unit on the other hand so as to isolate the electric control unit from the middle layer BMS signal unit.

An upper case cover 13 is fixed on the top of the upper case body 9, a battery discharging plug-in 14 is fixed on the surface of the upper case cover 13, a battery charging plug-in 15 is arranged on the side wall of the upper case body 9, and a communication plug-in 16 is arranged on one side of the side wall of the upper case body 9, which is located on the battery charging plug-in 15.

The upper surface of the lower box body 1 and the periphery of the upper box body 9 are symmetrically fixed with a plurality of lifting lugs 17, the lower box body 1 is mainly used for storing the lithium battery module 3, and the lower box body is placed at the lowest part of the lithium battery box body to stabilize the box body structure, so that the gravity center of the whole battery PACK is lowered, and the stability of the battery box body is improved; the upper box body 9 is mainly used for placing the BMS signal unit and the electrical control unit, is convenient for after-sale unpacking maintenance, and improves convenience of after-sale maintenance. The battery discharge end adopts the aviation plug-in components structure of high protection level, and the design is walked to positive negative pole separately, improves the security of discharge process, and the plug-in components is connected through binding post with last box 9. The battery charging end adopts REMA form, and the charging loop and the discharging loop are independently and separately designed. The lifting ring structure is welded with the lower box body 1 by adopting a trapezoid structure and is used for lifting a lithium battery PACK bag, and the lifting ring adopts a symmetrical structural design, so that the process of lifting the battery can be improved to be more stable, and the unstable inclination of the center of gravity of the battery to one side is avoided.

This battery box is to the layering design of lower floor's module, middle level BMS signal unit, upper electrical control unit, can clearly distinguish lithium battery box spatial structure, makes lithium battery PACK package assembly process can carry out running water formula assembly process, can realize the modularized design of module, BMS signal unit, electrical control unit simultaneously.

Claims (4)

1. Layered forklift lithium battery box, its characterized in that: including lower box, the interior bottom symmetry of lower box is fixed with the module mount, the upper surface fixed of module mount has the lithium cell module, the inside lateral wall symmetry of lower box is fixed with two sets of reinforcing plate muscle, every group the surface of reinforcing plate muscle all is fixed with square bar, be fixed with the module backup pad between the square bar, the lateral wall of module backup pad is fixed with the crossbeam support, the upper surface fixed of module backup pad has BMS management system, the upper surface fixed of lower box has the last box, be fixed with the intermediate lamella between lower box and the last box, the upper surface fixed of intermediate lamella has the upper bracket, the surface fixed of upper bracket has the electric control box.

2. The layered forklift lithium battery box of claim 1, wherein: and a relay and a fuse are integrated in the electric control box.

3. The layered forklift lithium battery box of claim 1, wherein: the top of going up the box is fixed with the case lid, the surface mounting of going up the case lid has battery to discharge the plug-in components, the lateral wall of going up the box is provided with battery charging plug-in components, the lateral wall of going up the box just is located one side of battery charging plug-in components and is provided with communication plug-in components.

4. The layered forklift lithium battery box of claim 1, wherein: the upper surface of lower box and be located the peripheral symmetry of last box and be fixed with a plurality of lifting lugs.