CN110635084B - Mounting and protecting structure of power battery pack for track engineering vehicle - Google Patents
Mounting and protecting structure of power battery pack for track engineering vehicle Download PDFInfo
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- CN110635084B CN110635084B CN201910962421.5A CN201910962421A CN110635084B CN 110635084 B CN110635084 B CN 110635084B CN 201910962421 A CN201910962421 A CN 201910962421A CN 110635084 B CN110635084 B CN 110635084B
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- 230000003137 locomotive effect Effects 0.000 claims abstract description 41
- 238000009434 installation Methods 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 61
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 20
- 239000003973 paint Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000002274 desiccant Substances 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an installation and protection structure of a power battery pack for a track engineering vehicle, and relates to the technical field of track 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 supporting insulation layer which are sequentially arranged from outside to inside of a battery box body, wherein 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 a locomotive; through implementing this technical scheme, can effectively solve current track engineering vehicle power battery package installation limited and the extremely low technical problem of barrier propterty, utilized the limited installation space of frame below and adopted the omnidirectional protective structure, can realize very big reduction battery package receives the safety risk that outside extrusion or striking brought, improve the security and the reliability of track engineering vehicle battery package.
Description
Technical Field
The invention relates to the technical field of track engineering vehicles, in particular to an installation and protection structure of a power battery pack for a track engineering vehicle.
Background
In recent years, with the rapid development of hybrid locomotives and pure battery locomotives, the market share of electric locomotives in the whole locomotive increases year by year, and further, electric locomotives with large endurance mileage and safety and reliability become important points for research and development of technicians in the field, and in the technical development of electric locomotives, a battery pack is used as one of key components of the electric locomotives, and the safety performance of the battery pack directly influences the whole car safety performance of the electric locomotives. The power batteries of the existing hybrid power locomotive and pure battery locomotive are mainly arranged at the position, above the locomotive frame, close to the middle, of the locomotive frame, no special protective measures exist, and the battery pack is mainly composed of a single-layer battery module, so that the arrangement of the positions with higher safety requirements and the arrangement of the limited positions of the size space are unreasonable.
For example, in the process of implementing the embodiment of the present invention, the inventor of the present application finds that at least the following technical problems exist in the existing power battery pack for a rail engineering vehicle: on one hand, the track engineering vehicle is limited by the height of the space on the vehicle, so that an independent installation protection structure cannot be arranged for the power battery any more, and the whole battery pack cannot meet the requirement of higher protection strength; on the other hand, under the condition that the whole vehicle collides and extrudes, the battery module inside the battery pack is easy to be extruded or impacted and the safety risk caused by the structural failure of the module is extremely low in safety and reliability.
Disclosure of Invention
In order to solve the technical problems that the installation of the power battery pack for the 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 a frame and adopt an omnibearing protection structure, can greatly reduce the safety risk caused by external extrusion or impact of the battery pack and improve the safety and reliability of the battery pack of the track engineering vehicle.
The technical scheme adopted by the invention is as follows:
a mounting and protecting structure of a power battery pack for a track engineering vehicle comprises
The battery box body is fixed at the bottom of the locomotive frame and is positioned in the installation space between the lower installation surface of the locomotive frame and the upper plane of the track, and a top cover is arranged at the top of the battery box body;
the battery module to be installed is fixed on a box body steel frame 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 supporting insulation layer, wherein the metal protection layer, the first buffer space layer and the supporting insulation layer are sequentially arranged outside the battery box body inwards, the second buffer space layer and an access door are further arranged on the left side and the right side of the battery box body along the advancing direction of a locomotive, and the second buffer space layer and the access door are sequentially arranged along the direction close to the metal protection layer.
Optionally, the battery module mounting structure includes battery module mounting bracket and lower battery module mounting bracket, the box steelframe inboard is provided with first box mount pad, go up battery module mounting bracket and lower battery module mounting bracket and fix respectively through the battery module mount pad of its bottom on the first box mount pad. Specifically, the upper battery module mounting frame can be designed into a specific size for storing long battery modules according to the requirement, and the lower battery module mounting frame can be designed into a specific size for storing short battery modules according to the requirement, so that the upper battery module and the lower battery module adopt a separated mounting mode, the under-vehicle limited mounting space between the lower 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; in addition, in order to reserve the installation and operation space of the battery module, the lower-layer battery module is shorter than the upper-layer battery module, and the structural design is ingenious and reasonable, so that the stability of the integral installation structure of the battery module can be effectively improved.
Optionally, the bottom of last battery module mounting bracket and lower battery module mounting bracket is located to the support insulating layer for support the battery module, the support insulating layer is pasted by the insulation board of upper strata and the support steel sheet of lower floor and forms, just the 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 is invalid due to impact vibration or other reasons, if the battery cells in the battery module are in a concave state, the supporting insulating plate plays a role in supporting the battery cells, so that potential safety hazards caused by excessive deformation of the battery module are avoided; the design of the insulating plate not only can improve the steel structure supporting strength of the supporting steel plate, but also can completely isolate the single battery module, so that the upper battery module mounting frame and the lower battery module mounting frame form an independent battery module mounting space, and each battery module is provided with an internal dividing structure, so that the mutual influence between batteries can be effectively avoided.
Optionally, the outer surface of the supporting steel plate is sprayed with insulating paint. The insulation effect between the single battery modules can be further improved, the single battery modules are equivalent to being installed in independent closed spaces, if the local modules are out of control, the diffusion of battery energy can be temporarily blocked physically, more reaction operation time is given to drivers and passengers, and accident loss is reduced.
Optionally, the box steelframe includes the steel sheet of buckling of following battery box bottom transverse distribution and around the steel construction girder of battery box distribution all around, the metal protection layer is including fixing side guard plate and the bottom surface guard plate on the box steelframe, first buffering space layer includes side buffering space and bottom surface buffering space, the space that constitutes between battery module mounting bracket and the lower battery module mounting bracket on side guard plate and its inboard is the side buffering space, the space that bottom surface guard plate and the cooperation of buckling steel sheet formed is the bottom surface buffering space. Specifically, the lower surface of the bending steel plate is provided with a plurality of convex structures which are uniformly distributed, the bottom surface protection plate and the bending steel plate are fixed in a welding mode, the integral structural strength can be increased, and meanwhile, the formed bottom surface buffering space can also increase the energy absorption density of the battery; the formation of the side buffer space also spatially delays the diffusion rate of battery energy, reducing the safety risk.
Optionally, insulating paint is sprayed on the box body steel frame, the side protection plates and the bottom protection plates. The phenomena of high voltage discharge, physical contact discharge, short circuit, etc. can be limited to the greatest possible extent.
Optionally, 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 the door lock, and sealing rubber strips are arranged at the joint of the access door and the groove-shaped end plates. The left side and the right side along the advancing direction of the locomotive are easy to be extruded or impacted by external objects, the arrangement of the access door and the second buffer space and the battery module protection structure inside the access door can form a five-layer protection structure, if the battery pack is impacted or extruded externally, the energy is absorbed by the deformation of the access door, the safety of the battery module inside the battery pack is ensured, and the safety and the reliability of the battery pack of the locomotive 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 drier is arranged in the buffer space inside 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, be equipped with sealed pad between top cap and the battery box, evenly be provided with a plurality of spacing mounting structures between top cap and the battery box, the top cap compresses tightly and seals the battery box through sealed pad along the battery box direction through spacing mounting structure. 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 for connecting the upper L-shaped mounting seat and the L-shaped mounting seat, so that the compression amount and the tightness of the sealing gasket are ensured through the contact limiting of the upper L-shaped mounting seat and the lower L-shaped mounting seat, and the battery module inside the battery box body is ensured to have a good working environment; and a plurality of spacing mounting structures are even densely arranged, can effectively avoid leading to sealed inefficacy problem because of battery box steel construction warp.
Optionally, the battery box is symmetrical structure in vertical and horizontal, and the upper plane of battery box is rectangular shape, and its front and back both sides that are close to four corners in locomotive advancing direction all are provided with the second box mount pad, and the bottom of locomotive frame is provided with the anti-disengaging structure that is used for fixed second box mount pad. The anti-drop structure comprises frame mounting seats symmetrically arranged at the bottom of the frame, the frame mounting seats are provided with L-shaped mounting surfaces which are oppositely arranged, and four second box body mounting seats of the battery box body are positioned on the horizontal sections of the L-shaped mounting surfaces and are fixed on the frame mounting seats through bolts, so that a suspension type anti-drop battery pack mounting structure is formed, and the safety and reliability of the mounting under the battery pack are ensured; the whole battery box body is installed in a modularized design, is convenient to assemble and disassemble, and has good practicability.
As described above, the invention has at least the following beneficial 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, so that the limited installation space below the locomotive frame can be effectively utilized, the defect that a battery protection structure cannot be installed due to the fact that the middle part of the upper part of the locomotive frame is easily limited by the height of the upper space of the locomotive frame in the prior art is effectively solved, and the safety and the reliability of the installation under the locomotive 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 long battery modules according to the requirement, the lower battery module mounting frame can be designed into a specific size for storing short battery modules according to the requirement, the upper battery modules and the lower battery modules in the battery box body are arranged in a separated mode, the problems that the structure size of the conventional single-layer battery module is large and the overall mechanical strength is low can be effectively avoided, in addition, in order to reserve the installation and operation space of the battery modules, the lower battery modules are shorter than the upper battery modules, the stability of the overall installation structure of the battery modules can be effectively improved, and the structural design is ingenious and reasonable.
3. According to the invention, the supporting insulating layer formed by sticking the insulating plate on the upper layer and the supporting steel plate on the lower layer 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 dividing structure, the mutual influence among batteries can be effectively avoided, if the local modules are out of control, the diffusion of battery energy can be blocked physically and temporarily, more reaction operation time is given to drivers and passengers, and accident loss is reduced.
4. The sealing gasket is arranged between the top cover and the battery box body, and the compression amount and the tightness of the sealing gasket can be ensured through the limiting and mounting structure, so that the battery module inside the battery box body is ensured to have a good working environment; and a plurality of spacing mounting structures are even densely arranged, can effectively avoid leading to sealed inefficacy problem 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 the protection plate, the internal buffer space and the insulation plate, and meanwhile, the surface of the steel structure material is sprayed with insulating paint, and auxiliary protection measures such as a drying agent are arranged in the side buffer space layer, 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 easy to be 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 battery pack of the locomotive can be remarkably improved.
As described above, the battery box body is arranged in the limited installation space below the frame, so that the invention can adapt to the characteristic of limited height above the frame of the track engineering vehicle, not only can effectively utilize the installation space to arrange a double-layer module structure, but also can skillfully arrange a multi-layer battery module protection structure, thereby greatly adapting to the protection strength requirement of the power battery pack installed under the vehicle, and under the condition of collision and extrusion of the whole vehicle, the safety risk of the battery module in the battery pack caused by extrusion or impact and the structural failure of the module can be furthest reduced, and the invention has better safety and reliability.
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 view of an installation of a power battery pack and a protection structure for a rail engineering vehicle according to an embodiment of the present invention;
FIG. 2 is a top view of the battery case of FIG. 1;
FIG. 3 is a schematic cross-sectional view of 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 flow chart illustrating a battery module protection structure according to an embodiment of the present invention;
FIG. 7 is an enlarged schematic view of portion D of FIG. 5;
FIG. 8 is an enlarged schematic view of portion E of FIG. 5;
fig. 9 is an enlarged schematic view of the portion F in fig. 3.
Reference numerals illustrate: 100-a battery box; 110-top cover; 111-a limit mounting structure; 120-box steel frame; 130-bending the steel plate; 140-steel structure main beams; 150-a first box mounting base; 160-a second box mounting base; 200-a battery module mounting structure; 210-upper battery module mounting rack; 220-lower battery module mounting rack; 230-a battery module mounting base; 300-a battery module protective structure; 310-a metal protective layer; 311-side shield plates; 312-floor guard; 320-a first buffer space layer; 321-side buffer space; 322-floor buffer space; 330-a supporting insulating layer; 331-an insulating plate; 332-supporting a steel plate; 340-a second buffer space layer; 341-channel end plates; 350-access door; 400-sealing rubber strips; 500-sealing gasket; 600-frame; 610-frame mount; 700-plane on track.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
The embodiment is substantially as shown in figures 1 and 2: the embodiment provides a mounting and protecting structure of a power battery pack for a track engineering vehicle, which comprises a battery box body 100, wherein the space above a track engineering vehicle frame 600 is limited, the battery box body 100 is fixed at the bottom of the vehicle frame 600 and is positioned in a mounting space between a lower mounting surface of the vehicle frame 600 and an upper plane 700 of the track, specifically, the battery box body 100 is of a symmetrical structure in the longitudinal direction and the transverse direction, the upper plane of the battery box body 100 is rectangular, second box body mounting seats 160 are mounted at the front side and the rear side of the vehicle in the advancing direction, which are close to four corners, and an anti-falling structure for fixing the second box body mounting seats 160 is arranged at the bottom of the vehicle frame 600; the anti-drop structure in the prior art can be selected to fix the battery box 100 at the bottom of the locomotive frame 600, and the anti-drop structure provided in this embodiment is a suspension type anti-drop mounting structure, and specifically includes frame mounting seats 610 symmetrically arranged at the bottom of the locomotive frame 600, the frame mounting seats 610 have L-shaped mounting surfaces which are oppositely arranged, and four second box mounting seats 160 of the battery box 100 are located at the inner sides of the horizontal sections of the L-shaped mounting surfaces and are fixed on the frame mounting seats 610 through bolts, so as to form a suspension type anti-drop battery pack mounting structure, and ensure the safety and reliability of the mounting under the battery pack; the whole battery box body 100 is installed in a modularized design, is convenient to assemble and disassemble, and has good practicability.
A top cover 110 is arranged at the top of the battery box 100, specifically, as shown in fig. 2, 3 and 4, a sealing gasket 500 is arranged between the top cover 110 and the battery box 100, a plurality of limit mounting structures 111 are uniformly arranged between the peripheral edge of the top cover 110 and the battery box 100, and the top cover 110 is pressed along the direction of the battery box 100 through the limit mounting structures 111 and seals the battery box 100 through the sealing gasket 500, so that the tightness of the battery box 100 is ensured. The limiting mounting structure 111 can be selected from limiting mounting structures in the prior art, and is used for detachably mounting the top cover 110 on the battery box 100 and adjusting the compression amount of the sealing gasket 500, the limiting mounting structure 111 provided by the embodiment comprises an upper L-shaped mounting seat welded on the side wall of the top cover 110, a lower L-shaped mounting seat welded on the battery box 100, and a bolt and nut structure for connecting the upper L-shaped mounting seat and the L-shaped mounting seat, so that the compression amount and the tightness of the sealing gasket 500 are ensured through the contact limit of the upper L-shaped mounting seat and the lower L-shaped mounting seat, and further, the battery module inside the battery box 100 is ensured to have a good working environment; and a plurality of spacing mounting structures 111 are evenly densely arranged, can effectively avoid leading to sealed inefficacy problem because of battery box 100 steel construction warp.
The battery module mounting structure 200 provided in this embodiment may select a fixed mounting structure in the prior art, and the electricity Chi Mozu to be mounted is stored in the battery module mounting frame, and the battery module mounting frame is mounted on the box steel frame 120 inside the battery box 100 in the existing fixing manner, for example, in the prior art, by using multiple fixing connection manners such as clamping, welding or embedding, so long as the battery module mounting frame is ensured to be fixed in the battery box 100.
In order to realize omnibearing protection of a battery module, the embodiment further provides a battery module protection structure 300, specifically, please refer to fig. 3 and 5, the battery module protection structure 300 includes a metal protection layer 310, a first buffer space layer 320 and a supporting insulation layer 330 sequentially disposed from outside to inside of a battery box 100, the battery box 100 is further provided with a second buffer space layer 340 and an access door 350 at left and right sides along a locomotive advancing direction, and the second buffer space layer 340 and the access door 350 are sequentially disposed along a direction close to the metal protection layer 310. The battery module has a multiple protection structure and has good safety protection performance; especially, the access door 350 and the second buffer space are additionally arranged to solve the problem that the left side and the right side along the advancing direction of the locomotive are easy to be extruded or impacted by external objects, so that the safety protection performance of the battery pack of the locomotive can be remarkably improved.
To sum up, this embodiment is convenient anticreep formula of installing battery box 100 in the limited installation space of frame 600 below, and the convenient maintenance dismantles the installation, can adapt to the highly limited characteristics in track engineering car frame 600 top, and can be ingenious be provided with multilayer battery module protective structure 300, has greatly adapted to the protective strength requirement of installing power battery package under the car, under whole car bump and extruded condition, can furthest reduce the battery module inside by receiving the safety risk that extrudees or strike and module self structure became invalid and bring, has better security and reliability.
Example 2
Example 2 is substantially the same as example 1 except that: as shown in fig. 5 and 7, the battery module mounting structure 200 provided in this embodiment includes an upper battery module mounting frame 210 and a lower battery module mounting frame 220, the box steel frame 120 includes a steel structure main beam 140 with a side wall thereof, a first box mounting seat 150 is disposed on the inner side of the box steel frame 120, and the first box mounting seat 150 and the steel structure main beam 140 are welded into a whole, so as to ensure the structural strength and the dimensional accuracy of the first box mounting seat 150. The upper battery module mounting frame 210 and the lower battery module mounting frame 220 are respectively fixed to the first case mounting seat 150 through battery module mounting seats 230 at the bottoms thereof. Specifically, the upper battery module mounting frame 210 may be designed to have a specific size for storing long battery modules according to needs, and the lower battery module mounting frame 220 may be designed to have a specific size for storing short battery modules according to needs, so that the upper battery module and the lower battery module adopt separate structures in a separate mounting manner, thereby avoiding the mutual influence between the battery modules, and not only effectively utilizing the under-vehicle limited mounting space between the lower mounting surface of the frame 600 and the upper plane 700 of the track, but also effectively avoiding the problems of large structural size and low overall mechanical strength of the existing single-layer battery module; in addition, in order to reserve the installation and operation space of the battery module, the lower-layer battery module is shorter than the upper-layer battery module, and the structural design is ingenious, reasonable and reasonable, so that the stability of the whole installation structure of the battery module can be effectively improved.
Further, the supporting insulating layer 330 provided in this embodiment is located at the bottoms of the upper battery module mounting frame 210 and the lower battery module mounting frame 220, and is specifically fixed on the box steel frame 120 in a threaded connection manner for supporting the battery module, the supporting insulating layer 330 is formed by adhering an insulating plate 331 on the upper layer and a supporting steel plate 332 on the lower layer, and the battery module mounting seat 230 is separated from the first box mounting seat 150 by the insulating plate 331 and is fixed on the first box mounting seat 150 by bolts, and similarly, the upper ends of the upper battery module mounting frame 210 and the lower battery module mounting frame 220 are detachably connected with the insulating plate 331 in a threaded connection manner. Therefore, when the structure of the battery module fails due to impact vibration or other reasons, if the battery cells in the battery module are in a concave state, the supporting insulating plate 331 plays a role in supporting the battery cells, so that potential safety hazards caused by excessive deformation of the battery module are avoided; the design of the insulating plate 331 not only can improve the steel structure supporting strength of the supporting steel plate 332, but also can completely isolate the single battery module, so that the upper battery module mounting frame 210 and the lower battery module mounting frame 220 form an independent battery module mounting space, and each battery module is provided with an internal dividing structure, so that the mutual influence between batteries can be effectively avoided.
In order to further improve the insulation effect between the single battery modules, the outer surface of the supporting steel plate 332 is sprayed with insulating paint, and the single modules are correspondingly installed in independent closed spaces, so that if the local modules are out of control, the diffusion of battery energy can be temporarily blocked physically, more reaction operation time is given to drivers and passengers, and accident loss is reduced.
Example 3
Example 3 is substantially the same as example 2 except that: referring to fig. 5, 6 and 8, the box steel frame 120 provided in this embodiment includes a bent steel plate 130 transversely distributed along the bottom of the battery box 100 and a steel structure main beam 140 distributed around the battery box 100, the metal protection layer 310 includes a side protection plate 311 and a bottom protection plate 312 fixed on the box steel frame 120, the first buffer space layer 320 includes a side buffer space 321 and a bottom buffer space 322, the upper end and the lower end of the side protection plate 311 are respectively welded on the steel structure main beam 140 to ensure the mechanical strength of the installation protection structure, so that the space formed between the side protection plate 311 and the upper battery module mounting frame 210 and the lower battery module mounting frame 220 on the inner side thereof is the side buffer space 321, thereby delaying the diffusion rate of battery energy in space and reducing the safety risk; the space formed by the bottom protection plate 312 and the bent steel plate 130 is a bottom buffer space 322. Specifically, the lower surface of the bent steel plate 130 has a plurality of uniformly arranged protruding structures, the bottom protection plate 312 and the bent steel plate 130 are fixed by welding, so that the overall structural strength can be increased, and the formed bottom buffer space 322 can also increase the energy absorption density of the battery.
To limit the phenomena such as high voltage discharge, physical contact discharge, short circuit and the like to the greatest extent, insulating paint is sprayed on the box body steel frame 120, the side protection plates 311 and the bottom protection plates 312; and the drying agent is arranged in the side buffer space layer, so that the air humidity in the sealed battery box body 100 can be effectively reduced, and the working reliability of the electrical equipment can be improved.
Since the left and right sides in the forward direction of the locomotive are easily pressed or bumped by external objects, the second buffer space layer 340 provided in the present embodiment is formed of channel-shaped end plates 341 welded to the left and right sides of the battery case 100 in the forward direction of the locomotive, and the inspection door 350 is fixed to the channel-shaped end plates 341 through door locks. The arrangement of the access door 350 and the second buffer space and the battery module protection structure 300 in the battery pack can form a five-layer protection structure, if the battery pack is impacted or extruded from the outside, the energy is absorbed by the deformation of the access door 350, the safety of the battery module in the battery pack is ensured, and the safety and reliability of the battery pack of the locomotive can be obviously improved.
In order to ensure the tightness of the connection between the access door 350 and the groove-shaped end plate 341, as shown in fig. 9, a sealing rubber strip 400 is arranged at the connection between the access door 350 and the groove-shaped end plate 341, and the sealing rubber strip 400 adopts a double-layer rubber strip sealing structure, so that the sealing reliability of the sealing rubber strip is effectively ensured; and the arrangement of the access door 350 is beneficial to the overhaul and maintenance of the electrical equipment, and has better practicability.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (6)
1. The utility model provides an installation and protective structure of power battery package for track engineering vehicle which characterized in that: comprising
The battery box body is fixed at the bottom of the locomotive frame and is positioned in the installation space between the lower installation surface of the locomotive frame and the upper plane of the track, and a top cover is arranged at the top of the battery box body;
the battery module to be installed is fixed on a box body steel frame 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 supporting insulation layer which are sequentially arranged outside the battery box body inwards, wherein the battery box body is further provided with a second buffer space layer and an access door at the left side and the right side along the advancing direction of a locomotive, and the second buffer space layer and the access door are sequentially arranged along the direction close to the metal protection layer;
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 respectively 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;
the support insulating layer is arranged at the bottoms of the upper battery module mounting frame and the lower battery module mounting frame and is used for supporting the battery module, the support insulating layer is formed by pasting an insulating plate on the upper layer and a support steel plate on the lower layer, and the battery module mounting seat is separated from the first box mounting seat through the insulating plate and is fixed on the first box mounting seat through bolts;
the box body steel frame comprises bending steel plates transversely distributed along the bottom of the battery box body and steel structure main beams distributed around the periphery of the battery box body, the metal protective layer comprises side protection plates and bottom protection plates fixed on the box body steel frame, the first buffer space layer comprises a side buffer space and a bottom buffer space, the space formed between the side protection plates and the upper battery module mounting frame and the lower battery module mounting frame on the inner side of the side protection plates is a side buffer space, and the space formed by the bottom protection plates and the bending steel plates in a matched mode is a bottom buffer space;
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 installation seats are arranged at the front side and the rear side of the locomotive in the advancing direction and close to four corners, and an anti-falling structure for fixing the second box installation seats is arranged at the bottom of the locomotive frame.
2. The mounting and protecting structure of a power battery pack for a railway engineering vehicle according to claim 1, wherein: and insulating paint is sprayed on the outer surface of the supporting steel plate.
3. The mounting and protecting structure of a power battery pack for a railway engineering vehicle according to claim 1, wherein: and insulating paint is sprayed on the box body steel frame, the side protection plates and the bottom protection plates.
4. The mounting and protecting structure of a power battery pack for a railway engineering vehicle according to claim 1, wherein: 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 the door lock, and sealing rubber strips are arranged at the joint of the access door and the groove-shaped end plates.
5. The mounting and protecting structure of a power battery pack for a railway engineering vehicle according to claim 1, wherein: and a drying agent is arranged in the side buffer space layer.
6. The mounting and protecting structure of a power battery pack for a railway engineering vehicle according to claim 1, wherein: the sealing gasket is arranged between the top cover and the battery box body, a plurality of limiting mounting structures are uniformly arranged between the top cover and the battery box body, and the top cover is tightly pressed along the direction of the battery box body through the limiting mounting structures and seals the battery box body through the sealing gasket.
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| CN111244359B (en) * | 2020-03-17 | 2024-04-16 | 中车资阳机车有限公司 | Integrated power battery system of high-power hybrid power locomotive |
| CN111605432B (en) * | 2020-06-02 | 2023-01-31 | 南京理工大学紫金学院 | Quick battery changing system for oil-electricity hybrid truck |
| CN114516262B (en) * | 2020-11-16 | 2023-08-01 | 宇通客车股份有限公司 | Vehicle bottom battery protection system and vehicle using same |
| WO2024000255A1 (en) * | 2022-06-29 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Box, battery and electric device |
| CN118040224A (en) * | 2024-04-12 | 2024-05-14 | 湖南工程学院 | New energy automobile power module installation mechanism |
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