阅读说明：本技术 一种轨道工程车用动力电池包的安装和防护结构 (Installation and protective structure of power battery pack for track engineering vehicle ) 是由 蓝涛 彭长福 隆孝军 张志鸿 徐华 李连凯 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种轨道工程车用动力电池包的安装和防护结构,涉及轨道工程车技术领域；其包括电池箱体、电池模组安装结构和电池模组防护结构,待安装电池模组通过电池模组安装结构固定于电池箱体内部；电池模组防护结构包括由电池箱体外向内依次设置的金属防护层、第一缓冲空间层和支撑绝缘层,电池箱体在沿机车前进方向的左右两侧还设置有第二缓冲空间层和检修门；通过实施本技术方案,可有效解决现有轨道工程车用动力电池包安装受限且防护性能极低的技术问题,利用了车架下方有限的安装空间且采用全方位防护结构,可实现极大的减小电池包受外部挤压或撞击带来的安全风险,提高轨道工程车电池包的安全性和可靠性。(The invention discloses an installation and protection structure of a power battery pack for a rail engineering vehicle, and relates to the technical field of rail engineering vehicles; the battery module to be installed is fixed in the battery box body through the battery module installation structure; the battery module protection structure comprises a metal protection layer, a first buffer space layer and a support insulation layer which are sequentially arranged from the outside of a battery box body to the inside, and the battery box body is also provided with a second buffer space layer and an access door at the left side and the right side along the advancing direction of the locomotive; through implementing this technical scheme, can effectively solve the limited and extremely low technical problem of barrier propterty of current track engineering vehicle power battery package installation, utilized the limited installation space in frame below and adopted all-round protective structure, can realize very big reduction battery package receives the safe risk that outside extrusion or striking brought, improves track engineering vehicle battery package's security and reliability.)

1. The utility model provides an installation and protective structure of power battery package for track engineering vehicle which characterized in that: comprises that

The battery box body is fixed at the bottom of the frame of the locomotive and is positioned in an installation space between a lower frame installation surface and an upper plane of the track, and a top cover is arranged at the top of the battery box body;

the battery module mounting structure is used for fixing a battery module to be mounted on a box body steel frame in the battery box body;

battery module protective structure, battery module protective structure include by the battery box is outer to metal protection layer, first buffering space layer and the support insulation layer that sets gradually inwards, the battery box still is provided with second buffering space layer and access door in the left and right sides along locomotive advancing direction, and second buffering space layer and access door are along being close to metal protection layer's direction sets gradually.

2. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 1, characterized in that: the battery module mounting structure comprises an upper battery module mounting frame and a lower battery module mounting frame, a first box mounting seat is arranged on the inner side of the box steel frame, and the upper battery module mounting frame and the lower battery module mounting frame are fixed on the first box mounting seat through battery module mounting seats at the bottoms of the upper battery module mounting frame and the lower battery module mounting frame respectively.

3. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 2, characterized in that: the bottom of last battery module mounting bracket and lower battery module mounting bracket is located to the support insulation layer for support battery module, the support insulation layer is pasted by the insulation board on upper strata and the supporting steel plate of lower floor and is formed, just battery module mount pad separates and passes through the bolt fastening on first box mount pad through insulation board and first box mount pad.

4. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 3, characterized in that: and insulating paint is sprayed on the outer surface of the support steel plate.

5. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 2, characterized in that: the box steelframe includes along the steel construction girder that buckles of battery bottom of the case transverse distribution board and distribute around the battery box, the metal protection layer is including fixing side guard plate and the bottom surface guard plate on the box steelframe, first buffer space layer includes side buffer space and bottom surface buffer space, the side guard plate is the side buffer space rather than the space that constitutes between inboard battery module mounting bracket and the lower battery module mounting bracket, the bottom surface guard plate is bottom surface buffer space with the space of buckling the steel sheet cooperation formation.

6. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 5, characterized in that: insulating paint is sprayed on the box steel frame, the side surface protection plate and the bottom surface protection plate.

7. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 5, characterized in that: the second buffer space layer is formed by groove-shaped end plates welded on two sides of the battery box body, the access door is fixed on the groove-shaped end plates through a door lock, and sealing rubber strips are arranged at the joint of the access door and the groove-shaped end plates.

8. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 5, characterized in that: and a drying agent is arranged in the side buffer space layer.

9. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 1, characterized in that: be equipped with sealed the pad between top cap and the battery box, evenly be provided with a plurality of spacing mounting structure between top cap and the battery box, the top cap compresses tightly and seals up the battery box through sealed the pad along the battery box direction through spacing mounting structure.

10. The mounting and protection structure of the power battery pack for the rail engineering vehicle according to claim 2, characterized in that: the battery box is of a symmetrical structure longitudinally and transversely, the upper plane of the battery box is rectangular, second box mounting seats are arranged on the front side and the rear side of the locomotive in the advancing direction and close to four corners, and an anti-disengaging structure used for fixing the second box mounting seats is arranged at the bottom of the locomotive frame.

Technical Field

The invention relates to the technical field of rail engineering vehicles, in particular to an installation and protection structure of a power battery pack for a rail engineering vehicle.

Background

In recent years, with the rapid development of hybrid locomotives and pure battery locomotives, the market share of electric locomotives increases year by year, and further electric locomotives with large endurance mileage, safety and reliability become the key points for research and development of technicians in the field. The power batteries of the existing hybrid locomotive and pure battery locomotive are mainly arranged at the position close to the middle part above a locomotive frame, no special protection measures are provided, and the battery pack mainly comprises single-layer battery modules, so that the arrangement of the positions with higher safety requirements and the arrangement of the positions with limited size and space are unreasonable.

For example, in the process of implementing the embodiment of the invention, the inventor of the present application finds that the power battery pack for the existing railway engineering vehicle has at least the following technical problems: on one hand, the rail engineering vehicle is limited by the height and the size of the space on the vehicle, so that an independent installation protection structure can not be arranged for the power battery, and the whole battery pack can not meet the requirement of higher protection strength; on the other hand, under the condition that the whole vehicle is collided and extruded, the battery module in the battery pack is easy to be subjected to safety risks caused by extrusion or impact and structural failure of the module, and the safety and the reliability of the battery pack are extremely low.

Disclosure of Invention

In order to solve the technical problems that the installation of the power battery pack for the existing track engineering vehicle is limited and the protection performance is extremely low, the invention aims to provide the installation and protection structure of the power battery pack for the track engineering vehicle, which can effectively utilize the limited installation space below the vehicle frame and adopts an all-directional protection structure, can greatly reduce the safety risk caused by external extrusion or impact on the battery pack, and improve the safety and reliability of the battery pack for the track engineering vehicle.

The technical scheme adopted by the invention is as follows:

installation and protective structure of power battery pack for rail engineering truck comprises

The battery box body is fixed at the bottom of the frame of the locomotive and is positioned in an installation space between a lower frame installation surface and an upper plane of the track, and a top cover is arranged at the top of the battery box body;

the battery module mounting structure is used for fixing a battery module to be mounted on a box body steel frame in the battery box body;

battery module protective structure, battery module protective structure include by the battery box is outer to metal inoxidizing coating, first buffering space layer and the support insulation layer that sets gradually inwards, the battery box still is provided with second buffering space layer and access door in the left and right sides along locomotive advancing direction, and second buffering space layer and access door are along being close to the direction of metal inoxidizing coating sets gradually.

Optionally, the battery module mounting structure comprises an upper battery module mounting frame and a lower battery module mounting frame, a first box mounting seat is arranged on the inner side of the box steel frame, and the upper battery module mounting frame and the lower battery module mounting frame are fixed on the first box mounting seat through battery module mounting seats at the bottoms of the upper battery module mounting frame and the lower battery module mounting frame respectively. Specifically, the upper battery module mounting frame can be designed into a specific size for storing the long battery module according to needs, and the lower battery module mounting frame can be designed into a specific size for storing the short battery module according to needs, so that the upper battery module and the lower battery module are separately mounted, the under-vehicle limited mounting space between the under-vehicle mounting surface of the frame and the upper plane of the track can be effectively utilized, and the problems of large structural size and low overall mechanical strength of the existing single-layer battery module can be effectively avoided; and in order to reserve battery module installation and operating space, lower floor's battery module is shorter than upper battery module, and this structural design is ingenious reasonable, can effectively improve battery module overall installation structure's stability.

Optionally, the bottom of last battery module mounting bracket and lower battery module mounting bracket is located to the support insulation layer for support battery module, the support insulation layer is pasted by the insulation board on upper strata and the supporting steel plate of lower floor and is formed, just battery module mount pad separates and passes through the bolt fastening on first box mount pad through insulation board and first box mount pad. Therefore, when the structure of the battery module per se fails due to impact vibration or other reasons and the battery core in the battery module is in a concave state, the supporting insulation plate can play a role of supporting the battery core, so that potential safety hazards caused by excessive deformation of the battery module are avoided; and the design of insulation board not only can improve the steel construction support intensity of supporting steel plate, and it has realized keeping apart completely to single battery module for go up battery module mounting bracket and battery module mounting bracket constitution independent battery module installation space down, and every battery module is equipped with interior part and cuts the structure, can effectively avoid the mutual influence between the battery.

Optionally, the outer surface of the supporting steel plate is sprayed with insulating paint. The insulating effect between the single battery module can be further improved, the single module is equivalent to being installed in an independent closed space, if the local module is out of control, the diffusion of battery energy can be temporarily blocked physically, more reaction operation time is given to drivers and passengers, and the accident loss is reduced.

Optionally, the box steelframe includes along the steel sheet of buckling of battery bottom of the case transverse distribution and around the steel construction girder of battery box four sides distribution, the metal protection layer is including fixing side guard plate and the bottom surface guard plate on the box steelframe, first buffer space layer includes side buffer space and bottom surface buffer space, the space that constitutes between battery module mounting bracket and the lower battery module mounting bracket on the side guard plate rather than the inboard is side buffer space, the bottom surface guard plate is bottom surface buffer space with the space that the steel sheet cooperation of buckling formed. Specifically, the lower surface of the bent steel plate is in a plurality of uniformly-distributed convex structures, and the bottom surface protection plate and the bent steel plate are fixed in a welding mode, so that the overall structural strength can be improved, and meanwhile, the formed bottom surface buffer space can also increase the energy absorption density of the battery; and the formation of the side buffer space also delays the diffusion rate of the battery energy from the space, and reduces the safety risk.

Optionally, insulating paint is sprayed on the box steel frame, the side surface protection plate and the bottom surface protection plate. The phenomena of high-voltage discharge, physical contact discharge, short circuit and the like can be limited to the maximum extent.

Optionally, the second buffer space layer is formed by groove-shaped end plates welded to two sides of the battery box body, the access door is fixed to the groove-shaped end plates through a door lock, and a sealing rubber strip is arranged at the joint of the access door and the groove-shaped end plates. Because the left side and the right side along the advancing direction of the locomotive are easily extruded or impacted by external objects, the arrangement of the access door and the second buffer space and the protective structure of the battery module in the access door can form a five-layer protective structure, if the battery pack is impacted or extruded by the outside, the energy of the battery pack is absorbed by the deformation of the access door, the safety of the battery module in the battery pack is ensured, and the safety and the reliability of the locomotive battery pack can be obviously improved; the sealing adhesive tape adopts a double-layer adhesive tape sealing structure, so that the sealing reliability of the sealing adhesive tape can be effectively ensured; and the arrangement of the access door is beneficial to the overhaul and maintenance of the electrical equipment.

Optionally, a desiccant is disposed within the side buffer space layer. The drying agent is arranged in the buffer space in the battery box body, so that the air humidity in the sealed battery box body can be reduced, and the working reliability of the electrical equipment is improved.

Optionally, a sealing gasket is arranged between the top cover and the battery box body, a plurality of limiting installation structures are uniformly arranged between the top cover and the battery box body, and the top cover is compressed along the direction of the battery box body through the limiting installation structures and seals the battery box body through the sealing gasket. The limiting mounting structure comprises an upper L-shaped mounting seat fixed on the top cover, a lower L-shaped mounting seat fixed on the battery box body and a bolt and nut structure used for connecting the upper L-shaped mounting seat and the L-shaped mounting seat, so that the compression amount and the sealing property of the sealing gasket are guaranteed through the contact limiting of the upper L-shaped mounting seat and the lower L-shaped mounting seat, and the battery module in the battery box body is further guaranteed to have a good working environment; and a plurality of spacing mounting structure are even intensive to be arranged, can effectively avoid leading to the problem of sealed inefficacy because of battery box steel construction warp.

Optionally, the battery box is of a symmetrical structure in the longitudinal direction and the transverse direction, the upper plane of the battery box is rectangular, second box mounting seats are arranged on the front side and the rear side of the locomotive in the advancing direction and close to the four corners, and an anti-disengaging structure used for fixing the second box mounting seats is arranged at the bottom of the locomotive frame. The anti-drop structure comprises frame mounting seats symmetrically arranged at the bottom of a frame, the frame mounting seats are oppositely provided with L-shaped mounting surfaces, and four second box mounting seats of the battery box are positioned on the horizontal section of the L-shaped mounting surfaces and fixed on the frame mounting seats through bolts to form a suspension type anti-drop battery pack mounting structure, so that the safety and the reliability of the installation under the battery pack vehicle are ensured; and whole battery box adopts the modularized design installation, and easy dismounting has better practicality.

As described above, the present invention has at least the following advantageous effects:

1. the battery box body is positioned in the installation space between the lower installation surface of the locomotive frame and the upper plane of the track, the limited installation space below the locomotive frame can be effectively utilized, the defect that the battery protection structure cannot be installed when the battery pack is installed in the middle part above the locomotive frame in the prior art and is easily limited by the height of the space above the locomotive frame is effectively overcome, and the safety and the reliability of the battery pack under-locomotive installation are ensured by adopting the suspension type anti-drop battery pack installation structure.

2. The battery box body is internally provided with the double-layer module mounting frame, the upper battery module mounting frame can be designed into a specific size for storing the long battery module according to needs, the lower battery module mounting frame can be designed into a specific size for storing the short battery module according to needs, the upper battery module and the lower battery module in the upper battery module mounting frame are separately mounted, the problems that the existing single-layer battery module is large in structural size and low in overall mechanical strength can be effectively solved, in order to reserve the mounting and operating space of the battery module, the lower battery module is shorter than the upper battery module, the stability of the overall mounting structure of the battery module can be effectively improved, and the structural design is ingenious and reasonable.

3. According to the invention, the supporting insulation layer formed by adhering the upper insulation plate and the lower supporting steel plate is arranged between the upper battery module and the lower battery module, so that the upper battery module mounting frame and the lower battery module mounting frame form an independent battery module mounting space, each battery module is provided with an internal partition structure, mutual influence among batteries can be effectively avoided, and if local module is out of control, the diffusion of battery energy can be temporarily blocked physically, so that more reaction operation time is provided for drivers and passengers, and the accident loss is reduced.

4. According to the invention, the sealing gasket is arranged between the top cover and the battery box body, and the compression amount and the sealing property of the sealing gasket can be ensured through the limiting mounting structure, so that a battery module in the battery box body is ensured to have a good working environment; and a plurality of spacing mounting structure are even intensive to be arranged, can effectively avoid leading to the problem of sealed inefficacy because of battery box steel construction warp.

5. According to the invention, the battery box body is provided with a plurality of layers of protection structures such as protection plates, internal buffer spaces and insulation plates, and meanwhile, the surface of a steel structure material is sprayed with insulating paint and auxiliary protection measures such as drying agents are arranged in the buffer space layer on the side surface, so that the safety protection performance of the locomotive battery pack can be effectively improved; especially, aiming at the problem that the left side and the right side along the advancing direction of the locomotive are easily extruded or impacted by external objects, the access door and the second buffer space are additionally arranged, so that the safety protection performance of the locomotive battery pack can be obviously improved.

As described above, the battery box body is arranged in the limited installation space below the frame, the height limitation characteristic above the frame of the rail engineering vehicle can be adapted, the double-layer module structure can be effectively arranged by utilizing the installation space, the multi-layer battery module protection structure can be skillfully arranged, the protection strength requirement of installing a power battery pack under the vehicle is greatly adapted, the safety risk caused by extrusion or impact of the battery module in the battery pack and the structural failure of the module can be reduced to the maximum extent under the condition that the whole vehicle is collided and extruded, and the safety and reliability are better.

Drawings

The invention will be described by way of specific embodiments and with reference to the accompanying drawings, in which

FIG. 1 is a schematic installation diagram of an installation and protection structure of a power battery pack for a railway engineering vehicle according to an embodiment of the invention;

FIG. 2 is a top view of the battery housing of FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of B-B of FIG. 2;

FIG. 5 is a schematic cross-sectional view of C-C of FIG. 3;

fig. 6 is a schematic flow chart illustrating a battery module protection structure according to an embodiment of the invention;

FIG. 7 is an enlarged schematic view of section D of FIG. 5;

FIG. 8 is an enlarged schematic view of section E of FIG. 5;

fig. 9 is an enlarged schematic view of portion F in fig. 3.

Description of reference numerals: 100-a battery case; 110-a top cover; 111-a limit mounting structure; 120-box steel frame; 130-bending a steel plate; 140-steel structural main beam; 150-a first box mount; 160-second box mount; 200-a battery module mounting structure; 210-upper battery module mount; 220-lower battery module mounting; 230-a battery module mounting seat; 300-battery module protective structure; 310-a metal protective layer; 311-side shield plate; 312-bottom surface guard plate; 320-a first buffer space layer; 321-a lateral buffer space; 322-bottom surface buffer space; 330-supporting insulating layer; 331-an insulating plate; 332-supporting steel plates; 340-a second buffer space layer; 341-trough shaped end plates; 350-an access door; 400-sealing adhesive tape; 500-a gasket; 600-a frame; 610-frame mount; 700-orbital upper plane.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of mutually exclusive features and/or steps.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.