CN117673625B - Battery structure of electric tricycle - Google Patents

Battery structure of electric tricycle Download PDF

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Publication number
CN117673625B
CN117673625B CN202410141584.8A CN202410141584A CN117673625B CN 117673625 B CN117673625 B CN 117673625B CN 202410141584 A CN202410141584 A CN 202410141584A CN 117673625 B CN117673625 B CN 117673625B
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China
Prior art keywords
box body
box
close
battery
plates
Prior art date
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CN202410141584.8A
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CN117673625A (en
Inventor
张俊
吴小涛
钱龙
鲍伟
李志义
朱明龙
钱志翔
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Jiangsu Huayou Energy Technology Co ltd
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Jiangsu Huayou Energy Technology Co ltd
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Priority to CN202410141584.8A priority Critical patent/CN117673625B/en
Publication of CN117673625A publication Critical patent/CN117673625A/en
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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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • 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
    • H01M50/242—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 against vibrations, collision impact or swelling
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

The invention belongs to the technical field of electronic element packaging, in particular to a battery structure of an electric tricycle, which comprises a box body, wherein the box body is of a rectangular hollow opening structure, an assembly unit is arranged in the middle position inside the box body, a water cooling unit is arranged above the box body, and energy reduction units distributed in a rectangular shape are arranged on the inner side wall of the box body; the invention realizes the stable and firm connection of the battery cells in groups through the cooperation of the bottom plate, the upper side plate, the lower side plate, the pull blocks, the screws and the like, realizes the serial connection between batteries through the aluminum bars, and realizes the serial connection between modules through the copper bars, thereby fully improving overcurrent, reducing temperature rise and prolonging the service life of the batteries; the lithium battery with tremble in the operation process is correspondingly subjected to energy reduction treatment through the first telescopic piece and the second telescopic piece, so that the lithium battery is dynamically and relatively static, the affinity between the diaphragm and the electrolyte is improved, and the performance of the lithium battery is enhanced.

Description

Battery structure of electric tricycle
Technical Field
The invention belongs to the technical field of electronic element packaging, and particularly relates to a battery structure of an electric tricycle.
Background
The lithium battery is a novel battery which uses lithium metal or lithium alloy as an anode/cathode material and uses nonaqueous electrolyte solution, and is gradually replaced by a lead-acid battery along with the rapid development of new energy industry and is incorporated into the industry of tricycles;
however, the lithium battery in the tricycle industry has the following problems in the use process:
1. the existing mode for fixing the lithium battery generally adopts an epoxy plate and a fiber adhesive tape for sticking connection, and meanwhile, the main frame of the lithium battery is generally fixedly connected with an external part through bolts, so that the lithium battery is in a vibration environment for a long time in the actual operation process due to the influence of vibration and vibration of an engine and pneumatic turbulence, on one hand, the wettability of a positive plate and a negative plate in an electrolyte is changed, so that the affinity between a diaphragm and the electrolyte is reduced, the contact area of the diaphragm and the electrolyte is reduced, the shuttle of Li+ between electrodes is seriously influenced, the transfer of Li+ to the negative electrode is influenced in the charging process, the lithium intercalation amount of the negative electrode is reduced, the ion conductivity is weakened, and finally capacity attenuation is caused; on the other hand, the long-term vibration environment influences the fixedly connection between the epoxy plate and the fiber adhesive tape, and meanwhile, the phenomenon of loosening of an external bolt can be caused, so that the structural strength of the lithium battery is reduced, and even the thermal runaway probability of the lithium battery is indirectly increased;
2. the sealing index is an important parameter of the lithium battery, when the sealing index of the lithium battery does not reach the standard, substances in the lithium battery have the probability of interaction with the outside, so that the battery performance is reduced, even problems such as short circuit and explosion occur, and gas is inevitably generated in the operation process of the lithium battery due to chemical reaction, so that the gas in the lithium battery is required to smoothly flow to the outside while the sealing performance is considered, and the explosion caused by the accumulation of the internal pressure of the lithium battery to a critical point is avoided;
3. when the battery cells in the lithium batteries of the mainstream tricycles in the industry are connected in series, a welding nickel plate mode is generally selected, and the module bridging is also in a welding nickel plate mode, so that overcurrent is unstable, excessive temperature rise is easy to cause, the discharge output of the lithium batteries is influenced, the chemical balance in the lithium batteries is destroyed, even related side reactions occur, and the service life of the battery cells is reduced; and the heat dissipated by the lithium battery in the operation process can cause loosening influence on the traditional glue connection mode, so that the stable operation environment is not beneficial to creation of the lithium battery operation.
Disclosure of Invention
In order to achieve the above purpose, the invention adopts the following technical scheme that the battery structure of the electric tricycle comprises a box body, wherein the box body is of a rectangular hollow opening structure, an assembly unit is arranged in the middle position in the box body, a water cooling unit is arranged above the box body, and energy reduction units distributed in a rectangular shape are arranged on the inner side wall of the box body;
the assembly unit includes:
at least one bottom guard plate is fixedly arranged at the bottom of the box body through bolts;
the at least one battery cell is uniformly arranged at the top surface of the bottom guard plate and is mounted in a fitting manner through a conductive connecting piece;
the top guard plates are in one-to-one correspondence with the number and the positions of the bottom guard plates and are attached to the top surface of the battery cell;
the copper bars are fixedly arranged at one end, close to the side wall of the box body, of each top guard plate through bolts;
the end plates are fixedly arranged at two ends of the top surface of each bottom guard plate through bolts and are mounted in a fitting mode with the battery cells;
the PC board is at least one and is uniformly arranged at one end, close to the inner wall of the box body, of the module consisting of the battery cells; the PC board near the end plate is provided with a heat-conducting silica gel pad only near the bottom of the box body, and the other PC boards are provided with heat-conducting silica gel pads at two ends;
the key-shaped grooves are uniformly formed in the end faces of the bottom guard plate, the top guard plate and the copper bar and are used for assisting heat dissipation of the battery cell;
the aluminum row is welded and installed at the middle position of the two adjacent heat-conducting silica gel pads close to the end face of the side wall of the box body;
the water cooling unit includes:
the valve body is uniformly arranged at two ends of the box cover in a penetrating manner, and is close to the junction position of the box cover and the box body;
the number of the return pipes is one, and the return pipes are embedded in the inner wall of the box cover, which is close to the sealing ring;
the T-shaped through pipes are clamped and installed at one end of each valve body close to the box cover and are movably inserted and installed with the return pipes;
the valve port is columnar and is communicated with one end of the valve body close to the case cover, and the valve port is positioned outside the case cover;
the valve core is slidably arranged in the valve body;
the valve ring is fixedly arranged at one end, far away from the box cover, inside the valve body and is in sliding fit with the valve core;
the reset spring is sleeved on the outer wall of one end, far away from the valve ring, of the valve body;
the guide pipes are fixedly arranged at one end of each valve body far away from the box cover, and the inlet ends of the guide pipes face the bottom end of the box body;
the energy reduction unit comprises:
the first chain plates are symmetrically distributed at the middle position of each side wall of the box body in a group shape;
the two vertical plates are in a group and fixedly arranged on the end face of each group of first chain plates, which is close to the middle position of the box body;
the first telescopic piece is slidably arranged in the middle of each group of vertical plates;
the second chain plate is a group of two chain plates and is fixedly arranged in the middle position of the two side walls taking the length as a reference in the box body;
the horizontal plates are fixedly arranged on the end surfaces of each group of second chain plates, which are close to the middle position of the box body;
the cross beams are uniformly arranged in the middle of the bottom surface of the box cover and are of a double-layer plate-shaped structure;
the second telescopic piece is slidably arranged in the middle of each horizontal plate and the cross beam;
and the rubber pad is detachably arranged on the end face of each second telescopic piece close to the battery cell.
Preferably, the box top is provided with rather than the case lid that just faces, is provided with waterproof sealing washer between case lid and the box, carries out fixed connection through the bolt that evenly sets up between box and the case lid simultaneously, and the casing is installed through the bolt detachable to the top surface intermediate position of case lid, and the radiating groove has evenly been seted up to the casing terminal surface, and box inboard diapire position fixed mounting has the base that is the symmetry form, and through bolt demountable installation between base and the end backplate, and box outside one end lateral wall is provided with the interface end that is the symmetry form and distributes, two be provided with between the interface end with box fixed connection's handle ring.
Preferably, the first expansion piece and the second expansion piece are formed by jacking columns, ring sheets, expansion springs and key-shaped plates together, the jacking columns are uniformly and slidably installed on each vertical plate and each horizontal plate, the number of the jacking columns is three, the key-shaped plates are commonly installed on the end faces, far away from the side walls of the box body, of each jacking column, two ring sheets are symmetrically arranged on the outer walls of the jacking columns, the ring sheets close to one side of the box body are slidably matched with the jacking columns, the other ring sheets are fixedly connected with the jacking columns, the expansion springs located between the two ring sheets are arranged on the outer walls of the jacking columns, and the two ends of each expansion spring are fixedly connected with the ring sheets.
Preferably, the top end of the PC board close to the end plate is provided with an angle guard plate, an epoxy plate is fixedly arranged between two angle guard plates taking the width of the box body as a reference through bolts, the middle position of one end of each end plate far away from the side wall of the box body is provided with an edge guard plate, two edge guard plates on the same side are jointly provided with symmetrically distributed pull blocks, the edge guard plates and the pull blocks are detachably arranged through bolts, and a separation guard plate is jointly arranged between every two adjacent top guard plates.
Preferably, the key-shaped grooves on the copper bars are in one-to-one correspondence with the middle positions of the aluminum bars, soft heat conduction pads are uniformly arranged in the middle positions of the end faces of each copper bar, which are close to the inner wall of the box body, and are symmetrically distributed on two sides of the key-shaped grooves on each copper bar, each soft heat conduction pad is provided with a heat dissipation plate, and arrow-shaped sheets which are linearly distributed are rotationally arranged on the heat dissipation plates through lugs.
Preferably, one end of the valve core, which is close to the box cover, is of a conical chamfer structure so as to be suitable for the inlet end of one side, which is close to the box cover, of the valve body, and meanwhile, a pipeline which is mutually communicated is arranged between the valve core and the conducting pipe.
Preferably, a groove is formed in the middle of the top surface of the box cover, a disc-shaped pipe used for water cooling is arranged in the groove, and the disc-shaped pipe is communicated with an external control system.
The invention has the following beneficial effects:
1. according to the invention, stable and continuous operation space support is provided for the series connection of the lithium battery cells through the cooperation between the bottom guard plate, the top guard plate and the end plates, the fixedly connection stability between the bottom guard plate and the box body, the fixedly connection stability between the bottom guard plate and the end plates and the fixedly connection stability between the end plates and the top guard plates are further enhanced through bolts, the vibration phenomenon generated in the operation process of the lithium battery is reduced to a certain extent, the service life of the lithium battery is prolonged, the buffer support for reducing the vibration generated in the operation of the lithium battery is provided for the first telescopic piece and the second telescopic piece to the greatest extent through the elastic effect of the telescopic spring, the connection stability of the lithium battery is improved, the wettability of the vibration to the electrolyte between the positive plate and the negative plate in the battery cells is avoided, the affinity between the diaphragm and the electrolyte is improved, and the quality of the lithium battery is further improved.
2. According to the invention, the sealing ring is additionally arranged between the box body and the box cover, meanwhile, the structural strength of the PACK of the lithium battery is further enhanced through a bolt connection mode, the tightness is improved to the IP67 level, the waterproof level of the lithium battery is enhanced, the interaction probability between chemical substances in the lithium battery and external substances is reduced, the performance of the lithium battery is improved, and the risks of short circuit and explosion are reduced.
3. According to the invention, high-temperature gas accumulated in the box body is guided to the outside through the valve port of the valve body, so that the dredging of the accumulated gas in the box body is realized, the phenomenon that excessive gas is accumulated in the operation process of the lithium battery to cause sudden rise of air pressure is avoided, the lithium battery is exploded, meanwhile, when the air pressure in the lithium battery is consistent with the external air pressure through the continuous reverse acting force of the reset spring on the valve core, the valve core can perform corresponding self-locking sealing treatment on a circulation channel between the valve body and the valve port, the interaction possibility between the inside of the box body and the outside is blocked, and the sealing performance of the PACK of the lithium battery is ensured, and meanwhile, the accumulated excessive gas in the box body is effectively relieved.
4. According to the invention, through the embedded return pipe layout additionally arranged at the junction position of the adjacent box body and the box cover, the heat absorption treatment of the cooling liquid in the return pipe to the heat layout most concentrated area in the box body (in a closed space with heat energy level difference, heat always tends to be distributed at the edge and finally reaches a high temperature state, and no heat flows after the heat is in any flow), and compared with a traditional water cooling system, the product has pertinence and timeliness, is more beneficial to quickly stabilizing the operation temperature of a lithium battery and improving the operation performance of the lithium battery.
5. The three-way property of the T-shaped pipe is fully utilized, so that accumulated gas in the box body can be smoothly guided to the valve port position of the valve body, the stability of the air pressure in the box body is balanced, meanwhile, heat absorbed by cooling liquid in the return pipe can be dissipated to the outside, and the efficiency of stabilizing the air pressure and dissipating the heat is improved through the plurality of valve bodies; in addition, a small amount of external gas carelessly brought in during self-locking sealing of the valve core can be subjected to auxiliary treatment through the connectivity between the T-shaped through pipe and the return pipe, namely, the gas is further filtered and trapped through cooling liquid in the return pipe, so that the partition property of the valve core between the box body and the outside is improved.
6. According to the invention, the series connection among batteries is realized through the aluminum bars, a series connection mode of welding nickel plates among traditional batteries is broken, and the series connection mode among modules inside the lithium battery is changed through the copper bars, so that the overcurrent among the batteries is improved, meanwhile, the temperature rise effect generated during the operation of the lithium battery is reduced, the chemical reaction inside the lithium battery is balanced, the occurrence probability of side reaction is reduced, and the performance of the lithium battery is improved; in addition, the reduction of temperature rise effect and the synchronous processing treatment of the water cooling unit are favorable for improving the bolt fixedly connection stability of the PACK structural strength of the lithium battery in the product, namely, the quality problems of hydrogen embrittlement, corrosion protection loss and the like of the fastener caused by the overrun of the operation temperature of the bolt coating are reduced, and the long-term effectiveness of the IP67 sealing grade of the product is ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 with the cover, housing and coil removed.
Fig. 3 is a schematic view of the assembled unit structure of the present invention.
Fig. 4 is a perspective assembly view of the soft thermal pad, the heat dissipation plate and the arrow-shaped sheet of the present invention.
Fig. 5 is a schematic view of the assembled unit of the present invention with a top guard plate and copper bars removed.
FIG. 6 is a partial sectional view of the water cooling unit according to the present invention.
FIG. 7 is a partial sectional view of the energy reducing unit of the present invention.
FIG. 8 is a cross-sectional view of the structure of the water cooling unit and the energy reducing unit on the upper part of the box cover of the invention.
Fig. 9 is a perspective assembly view of the jack post, key plate, ring plate, extension spring and rubber pad of the present invention.
Reference numerals in the drawings: 1. a case; 2. an assembling unit; 3. a water cooling unit; 4. a power-reducing unit;
11. a case cover; 12. a seal ring; 13. a housing; 14. a heat sink; 15. a base; 16. an interface end; 17. a handle ring;
21. a bottom guard board; 22. a battery cell; 23. a top guard board; 24. a copper bar; 25. an end plate; 26. a PC board; 27. a thermally conductive silicone pad; 28. a key-shaped groove; 29. an aluminum row;
31. a valve body; 32. a return pipe; 33. t-shaped through pipe; 34. a valve port; 35. a valve core; 36. a valve ring; 37. a return spring; 38. a conduit;
41. a first chain plate; 42. a vertical plate; 43. a first telescopic piece; 44. a second chain plate; 45. a horizontal plate; 46. a cross beam; 47. a second telescopic piece; 48. a rubber pad;
271. corner guard plates; 272. an epoxy board; 273. edge guard plates; 274. pulling blocks; 275. a separation guard plate;
241. a soft thermal pad; 242. a heat dissipation plate; 243. arrow-shaped pieces;
311. a groove; 312. a coiled pipe;
491. jacking the column; 492. a key-shaped plate; 493. a ring piece; 494. and a telescopic spring.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that the terms "vertical", "horizontal", "left", "right" and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 2, 3 and 7, a battery structure of an electric tricycle is known, and includes a box 1, wherein the box 1 is a rectangular hollow opening structure, an assembly unit 2 is arranged in the middle position inside the box 1, a water cooling unit 3 is arranged above the box 1, and energy reduction units 4 distributed in a rectangular shape are arranged on the inner side wall of the box 1;
as can be seen with reference to fig. 2, 3 and 5, the assembly unit 2 comprises: at least one bottom guard plate 21 is fixedly arranged at the bottom of the inside of the box body 1 through bolts; the at least one battery cell 22 is uniformly arranged at the top surface of the bottom guard plate 21 and is mounted in a fitting manner through a conductive connecting piece; the top guard plates 23 are in one-to-one correspondence with the number and positions of the bottom guard plates 21 and are attached to the top surfaces of the battery cells 22; the copper bars 24 are fixedly arranged at one end of each top guard plate 23, which is close to the side wall of the box body 1, through bolts; end plates 25 fixedly mounted at both ends of the top surface of each bottom guard plate 21 through bolts and mounted in a fitting manner with the battery cells 22;
the PC board 26 is at least one and is uniformly arranged at one end, close to the inner wall of the box body 1, of the module consisting of the battery cells 22; the PC board 26 near the end plate 25 is provided with a heat conduction silica gel pad 27 only near the bottom of the box body 1, and the PC boards 26 at the rest positions are provided with the heat conduction silica gel pads 27 at two ends; the key-shaped grooves 28 are uniformly formed on the end surfaces of the bottom guard plate 21, the top guard plate 23 and the copper bars 24 and are used for assisting the heat dissipation of the battery cells 22; the aluminum row 29 is welded and installed at the middle position of the two adjacent heat-conducting silica gel pads 27 close to the end face of the side wall of the box body 1;
the top end of the box body 1 is provided with a box cover 11 which is opposite to the box body, a waterproof sealing ring 12 is arranged between the box cover 11 and the box body 1, and the box body 1 and the box cover 11 are fixedly connected through uniformly arranged bolts;
referring to fig. 3 and 5, it can be seen that the top end of the PC board 26 near the end plate 25 is provided with an angle guard 271, an epoxy board 272 is fixedly mounted between two angle guards 271 based on the width of the box 1 by bolts, an edge guard 273 is mounted at the middle position of one end of each end plate 25 far away from the side wall of the box 1, symmetrically distributed pull blocks 274 are commonly arranged between the two edge guards 273 on the same side, and a partition guard 275 is commonly arranged between each two adjacent top guards 23 by detachably mounting the edge guard 273 and the pull blocks 274 by bolts;
referring to fig. 3 and 4, it can be seen that the positions of the key-shaped grooves 28 on the copper bars 24 are in one-to-one correspondence with the middle position of the aluminum bars 29, soft heat-conducting pads 241 are uniformly arranged at the middle position of the end surface of each copper bar 24, which is close to the inner wall of the box body 1, and the soft heat-conducting pads 241 are symmetrically distributed on both sides of the key-shaped grooves 28 on each copper bar 24, each soft heat-conducting pad 241 is provided with a heat dissipation plate 242, and arrow-shaped pieces 243 which are linearly distributed are rotatably arranged on the heat dissipation plate 242 through lugs.
The PACK flow of the lithium battery is as follows:
firstly, the assembly unit 2 is completely placed in the middle position inside the box body 1, and in the concrete implementation, enough space for laying the energy reduction unit 4 is reserved between the four side walls of the box body 1 and the lithium battery, then the box body 1 is sealed by a cover 11, and in the process, the PACK of the lithium battery integrally reaches the sealing grade of IP67 through the matched use of the sealing ring 12 and the bolts;
then, the battery cells 22 of the lithium battery are isolated and protected from the bottom wall of the box body 1 through the bottom guard plate 21 (and the fixedly connected stability between the bottom guard plate 21 and the base 15 is enhanced through bolts, namely, a connecting mode different from the traditional glue connection is additionally arranged, so that the connection firmness between the lithium battery and the box body 1 in the product is improved), and the operation space after the battery cells 22 are connected in series and formed into a group is limited through the matched use of the end plate 25 and the top guard plate 23, so that the stability of the battery cells 22 of the lithium battery after the battery cells 22 are connected in series is improved (namely, the bonding firmness between the battery cells 22 after the battery cells 22 are connected in series is improved, and the space allowance of the battery cells 22 capable of vibrating is reduced);
the series connection between the battery cells 22 is in a group flow:
a plurality of electric cores 22 are uniformly and laminated on the top surface of a bottom guard plate 21, then insulation partition protection is carried out between the electric cores 22 and copper bars 24 through PC boards 26 with the same number as the electric cores 22, every two adjacent electric cores 22 are welded in series by using nickel plates in a traditional way through an aluminum bar 29, so that the stability of the electric cores 22 after being connected in series to form a group (the operation stability of the electric cores 22 after being connected in series to form a group is further improved through a welding mode of up-down symmetry and welding distribution of up-down staggered) is realized, and meanwhile, the heat conduction and heat dissipation efficiency in the operation process of the electric cores 22 is improved through a plurality of arranged heat conduction silica gel pads 27, so that the continuous stable operation of the electric cores 22 is protected and navigated;
after the battery cells 22 are assembled, the serial flow between the modules is as follows:
the two adjacent corner guard plates 271 are connected through the epoxy plate 272 (the insulation partition property between the battery and the box body 1 is enhanced), the connection stability between the corner guard plates 271 and the epoxy plate 272 is enhanced through bolts at the same time, the two identical lithium battery modules are preliminarily combined, then the connection integrity between the two identical battery modules is further enhanced through the bolt connection between the edge guard plates 273 and the pull blocks 274, the arrangement of the copper bars 24 not only provides a serial connection mode different from the traditional battery modules, the excessive current effect between the batteries is improved, but also the temperature rise of the battery operation is reduced, the problem of creep deformation and stress relaxation at the bolt connection ends is avoided, and the product is unfavorable for creating a precursor condition of a stable operation environment for the lithium battery through bolts;
the purpose of the key slot 28 being formed in the middle of each aluminum row 29 (and at the interface between each adjacent two PC boards 26 or cells 22) is to: the heat generated during the operation of the battery is dispersed in a targeted manner, meanwhile, the conduction effect on the heat is further improved through the soft rubber pads 48 and the radiating plates 242 additionally arranged at the two sides of each key-shaped groove 28, and then the uniformly arranged arrow-shaped pieces 243 rapidly conduct the heat transferred by the radiating plates 242 to the space area between the box body 1 and the battery through the forced convection and the heat radiation effect, so that the battery temperature is rapidly and continuously maintained in the operation process, and the operation performance of the battery is improved;
through the partition plate 275 which grows between the adjacent battery modules, the heat dissipation space allowance between different battery modules is improved, the heat dissipation between the auxiliary battery modules is facilitated, and further favorable conditions are created for the stable operation of the battery.
Referring to fig. 1 and 2 and 6, the water cooling unit 3 includes: the valve body 31 is uniformly arranged at two ends of the box cover 11 in a penetrating manner, and the valve body 31 is close to the junction position of the box cover 11 and the box body 1; the number of the return pipes 32 is one, and the return pipes are embedded in the inner wall of the box cover 11 close to the sealing ring 12; the T-shaped through pipes 33 are arranged at one end of each valve body 31 close to the box cover 11 in a clamping manner, and are movably inserted and connected with the return pipes 32; the valve port 34 is columnar, penetrates through one end of the valve body 31, which is close to the case cover 11, and the valve port 34 is positioned outside the case cover 11; a valve core 35 slidably installed inside the valve body 31; the valve ring 36 is fixedly arranged at one end, far away from the box cover 11, of the valve body 31 and is in sliding fit with the valve core 35; a return spring 37 sleeved on the outer wall of one end of the valve body 31 away from the valve ring 36; a conduit 38 fixedly installed at one end of each valve body 31 far from the case cover 11, and an inlet end of the conduit 38 is directed toward the bottom end of the case 1;
referring to fig. 1, 6 and 8, it can be seen that a groove 311 is formed in a middle position of a top surface of the case cover 11, a disc-shaped pipe 312 for water cooling is arranged in the groove 311, the disc-shaped pipe 312 is communicated with an external control system, heat dissipation grooves 14 are uniformly formed in an end surface of the case 13, symmetrically distributed interface ends 16 are formed on one side wall of the outer part of the case 1, a handle ring 17 fixedly connected with the case 1 is arranged between the two interface ends 16, one end of the valve core 35, which is close to the case cover 11, is in a conical chamfer structure, is adapted to an inlet end of the valve body 31, which is close to the case cover 11, a pipeline communicated with each other is formed between the valve core 35 and the conducting pipe 38, the case 13 is detachably mounted on the middle position of the top surface of the case cover 11 through bolts, a symmetrical base 15 is fixedly mounted on the bottom wall of the inner side of the case 1, and the base 15 and the bottom guard 21 are detachably mounted through bolts.
Under normal operating environment conditions (not primarily in fluid and ambient atmospheric pressure environments):
when the lithium battery works:
the air pressure and the temperature in the box body 1 are increased simultaneously, at this time, high-temperature gas in the box body 1 gradually flows to the valve port 34 through the T-shaped through pipe 33 due to the pressure difference between the box body 1 and the external environment until the high-temperature gas escapes to the outside, in the process, the valve core 35 drives the reset spring 37 to compress towards the valve ring 36 under the lifting action of the air pressure in the box body 1, and then the separation of the valve port 34 and the flow channel of the T-shaped through pipe 33 by the valve core 35 in the initial state is relieved (meanwhile, the corresponding conical chamfering is carried out on the position of the valve core 35 close to the T-shaped through pipe 33, so that the contact space allowance between the valve core 35 and the valve body 31 is reduced, the sealing performance of the valve core 35 to the valve port 34 and the T-shaped through pipe 33 is improved, the gas generated by the chemical reaction of a battery in the box body 1 is facilitated to be dredged, the air pressure inside and outside the box body 1 is balanced, the water-proof level of the box body 1 and the box cover 11 which is lifted under the action of the bolt is ensured, meanwhile, the excessive accumulation of the gas in the box body 1 is avoided, and the risk of explosion of the battery is reduced;
when the air pressure in the case 1 is dynamically stabilized:
the valve core 35 moves towards the direction of the T-shaped through pipe 33 under the self elastic force of the return spring 37 until the valve port 34 is sealed with the circulation channel of the T-shaped through pipe 33 again, so that the self-adaptive adjustment of the lithium battery under different operation conditions is realized, the interaction possibility of the lithium battery inside and outside the box body 1 under the non-operation environment is reduced, and the service life of the lithium battery is fully prolonged;
in abnormal operating environment conditions (described with respect to short term fluid environment or ambient atmospheric pressure environment):
when the valve is in fluid, the fluid flows to a position between the valve core 35 and the valve body 31 through the valve port 34, and then the valve core 35 makes the valve core 35 perform self-locking sealing on a circulation channel between the valve port 34 and the T-shaped pipe 33 under the reaction force of the fluid, so that interaction between the box body 1 and the outside is blocked (a possibility exists that part of the fluid flows to the inside of the box body 1 when the valve core 35 seals the circulation channel between the valve port 34 and the T-shaped pipe 33 due to the specificity of the fluid, and the part of the fluid is trapped through the return pipe 32 and can be used as a source for cooling the fluid in the return pipe 32;
when the air pressure inside and outside the case 1 is in dynamic balance (at this time, the valve element 35 gradually moves toward the T-pipe 33, so that a small amount of external air (too little in the case of long-term continuous operation) enters the case 1 under the extrusion action):
at this time, the flowing space between the tee pipe 33 and the return pipe 32 is utilized to primarily intercept the external gas (the external gas contacts with the inner wall of the tee pipe 33 in the flowing process so as to intercept the lower part, and then is brought out to the outside by the gas in the box 1 when the air pressure in the box 1 is increased), meanwhile, the external gas is further filtered and intercepted by the fluid in the return pipe 32, so that the generation reaction between the external gas and the battery in the box 1 is fully avoided, and the service life of the battery is influenced;
since in an enclosed space with a thermal energy level difference, the heat always tends to be distributed towards the edges, and finally reaches a high temperature state, after which no heat flows anymore: therefore, by arranging the embedded return pipe 32 at the junction position between the box body 1 and the box cover 11, the absorption of the cooling liquid in the return pipe 32 to the accumulated heat (the heat conducted by the arrow-shaped piece 243 through forced convection and heat radiation) in the box body 1 is facilitated to be improved, and the operation temperature of the lithium battery is further maintained;
the temperature in the box body 1 is subjected to auxiliary cooling treatment through the disc-shaped pipe 312 (the disc-shaped pipe 312 is communicated with an external loop control system and is filled with cooling liquid) arranged at the top end of the box cover 11, so that the lithium battery is further ensured to be at a proper working temperature for a long time, and the lithium battery is convenient to overhaul in the later period through the detachable shell 13, and meanwhile, the shell 13 is uniformly provided with the heat dissipation grooves 14, so that the interactivity between the disc-shaped pipe 312 and the external air is facilitated;
through two interface ends 16 in the box 1 outside, make things convenient for the electric connection between lithium cell and the external part, simultaneously through handle ring 17, make things convenient for maintenance personal's transport and transportation.
Referring to fig. 7, 8 and 9, the energy reducing unit 4 includes: the first chain plates 41 are arranged in a group, and the four first chain plates 41 are symmetrically distributed in the middle of each side wall of the box body 1 in a group shape; the two vertical plates 42 are in a group, and are fixedly arranged on the end face of each group of first chain plates 41, which is close to the middle position of the box body 1; a first expansion member 43 slidably mounted in the middle of each set of vertical plates 42; two chain plates 44 are arranged in a group and fixedly arranged in the middle positions of the two side walls of the box body 1 by taking the length as a reference; the horizontal plates 45 are fixedly arranged on the end surfaces of the second chain plates 44 of each group, which are close to the middle position of the box body 1; the cross beams 46 are uniformly arranged in the middle of the bottom surface of the box cover 11, and the cross beams 46 are of a double-layer plate-shaped structure; a second expansion member 47 slidably installed at an intermediate position of each horizontal plate 45 and the cross member 46; a rubber pad 48 detachably mounted on the end face of each second expansion piece 47 close to the battery cell 22;
referring to fig. 9, the first expansion member 43 and the second expansion member 47 are composed of a lifting column 491, ring pieces 493, expansion springs 494 and a key-shaped plate 492, wherein the lifting column 491 is uniformly slidably mounted on each of the vertical plate 42 and the horizontal plate 45, the number of the lifting columns 491 is three, the key-shaped plates 492 are commonly mounted on the end faces of the three lifting columns 491 far away from the side wall of the box body 1, two ring pieces 493 are symmetrically arranged on the outer wall of each lifting column 491, wherein the ring pieces 493 close to one side of the box body 1 are slidably mounted on the lifting column 491 in a matched manner, the other ring piece 493 is fixedly connected with the lifting column 491, the expansion springs 494 between the two ring pieces 493 are arranged on the outer wall of the lifting column 491, and the two ends of the expansion springs 494 are fixedly connected with the ring pieces 493.
First, description is made of the layout of the energy reduction unit 4:
considering the uncertain factors of the battery affected by tremble, a plurality of energy reduction units 4 which are right opposite to the lithium battery module are uniformly arranged on the four side walls of the box body 1 and the top end bottom wall of the box cover 11 at the same time, so that the treatment effect of the energy reduction units 4 on the lithium battery when tremble occurs is fully improved;
when the lithium battery works for a long time and corresponding tremors occur:
when the rubber pad 48 receives the vibration acting force of the lithium battery, the vibration effect of the battery is primarily reduced by the material property of the rubber pad, and then the excessive vibration acting force drives the lifting column 491 to move in the direction away from the battery module respectively under the stable guide of the vertical plate 42 or the horizontal plate 45 or the cross beam 46, in the process, the telescopic spring 494 synchronously follows the movement of the lifting column 491 and gradually compresses (refer to fig. 8 and 9), namely, the vibration effect of the lithium battery is correspondingly reduced and buffered to the greatest extent by the self elastic effect of the telescopic spring 494 (refer to the principle of a shock absorber), so that the lithium battery is finally in a dynamic relatively stationary state, and a series of problems (such as reduction of the impedance of a battery interface, reduction of the wetting effect between an electrolyte pole piece and a diaphragm and capacity attenuation) caused by the traditional lithium battery in a vibration environment for a long time are fundamentally solved.
The invention provides a battery structure working principle of an electric tricycle, which comprises the following steps: the first step: firstly, the bottom guard plate 21 is used for isolating and protecting the battery cells 22 from the bottom wall of the box body 1, then the end plate 25 and the top guard plate 23 are used for providing a stable operation space for series connection between the battery cells 22, the series connection mode different from the traditional battery cells 22 is realized through the aluminum row 29, and the series connection mode different from the traditional battery module and the module is realized through the copper row 24, so that the overcurrent between batteries is improved, and the temperature rise effect of the batteries is reduced;
and a second step of: then, the accumulated gas in the box body 1 is guided to the position of the valve port 34 through the T-shaped pipe 33, and the continuous reverse acting force of the return spring 37 to the valve core 35 is used for realizing the separation protection of the valve core 35 on the interaction of the T-shaped pipe 33 and the outside, so that the air pressure and the temperature in the box body 1 are balanced, and meanwhile, the coiled pipe 312 at the top of the auxiliary box cover 11 is used for maintaining and stabilizing the temperature in the box body 1 through the connectivity between the return pipe 32 and the T-shaped pipe 33;
and a third step of: finally, through the first expansion piece 43 and the second expansion piece 47 which are arranged in multiple directions, namely when the lithium battery vibrates, the rubber pad 48 on the key-shaped plate 492 transmits the acting force of the lithium battery to the jacking column 491, and the stressed jacking column 491 drives the expansion spring 494 to move towards the inner wall of the box body 1 under the guiding action of the vertical plate 42 or the horizontal plate 45, in the process, the corresponding energy-lowering buffer treatment is carried out on the jacking column 491 in the moving process through the compressibility of the expansion spring 494, so that the same-frequency movement of the first expansion piece 43, the second expansion piece 47 and the lithium battery is finally realized until the relative rest of the lithium battery is realized, and the operation stability of the lithium battery is improved.
The circuits and control involved in the present invention are all of the prior art, and are not described in detail herein.
The foregoing is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present invention and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the invention.

Claims (7)

1. The utility model provides a battery structure of electric tricycle, includes box (1), and box (1) are rectangular hollow opening structure, its characterized in that: an assembling unit (2) is arranged in the middle position inside the box body (1), a water cooling unit (3) is arranged above the box body (1), and energy reduction units (4) distributed in a rectangular shape are arranged on the inner side wall of the box body (1);
the assembly unit (2) comprises:
at least one bottom guard board (21) is fixedly arranged at the bottom of the inside of the box body (1) through bolts;
the at least one battery cell (22) is uniformly arranged at the top surface of the bottom guard plate (21) and is mounted in a fitting manner through a conductive connecting piece;
the top guard plates (23) are in one-to-one correspondence with the number and the positions of the bottom guard plates (21) and are attached to the top surface of the battery cell (22);
the copper bars (24) are fixedly arranged at one end, close to the side wall of the box body (1), of each top guard plate (23) through bolts;
the end plates (25) are fixedly arranged at two ends of the top surface of each bottom guard plate (21) through bolts and are mounted in a fitting manner with the battery cells (22);
the PC board (26) is at least one and is uniformly arranged at one end, close to the inner wall of the box body (1), of the module consisting of the battery cells (22); the PC board (26) close to the end plate (25) is provided with a heat conduction silica gel pad (27) only close to the bottom of the box body (1), and the other PC boards (26) are provided with heat conduction silica gel pads (27) at two ends;
the key-shaped grooves (28) are uniformly formed in the end faces of the bottom guard plate (21), the top guard plate (23) and the copper bars (24) and are used for assisting the heat dissipation of the battery cells (22);
the aluminum row (29) is welded and installed at the middle position of two adjacent heat-conducting silica gel pads (27) close to the end face of the side wall of the box body (1);
the water cooling unit (3) comprises:
the valve body (31) is uniformly arranged at two ends of the box cover (11) in a penetrating manner, and the valve body (31) is close to the junction position of the box cover (11) and the box body (1);
the number of the return pipes (32) is one, and the return pipes are embedded in the inner wall of the box cover (11) close to the sealing ring (12);
the T-shaped through pipes (33) are arranged at one end of each valve body (31) close to the box cover (11) in a clamping manner, and are movably inserted and arranged between the T-shaped through pipes and the return pipes (32);
the valve port (34) is columnar and penetrates through one end, close to the case cover (11), of the valve body (31), and the valve port (34) is positioned outside the case cover (11);
a valve core (35) slidably mounted inside the valve body (31);
the valve ring (36) is fixedly arranged at one end, far away from the box cover (11), inside the valve body (31) and is in sliding fit with the valve core (35);
a return spring (37) sleeved on the outer wall of one end of the valve body (31) far away from the valve ring (36);
the guide pipes (38) are fixedly arranged at one end of each valve body (31) far away from the box cover (11), and the inlet ends of the guide pipes (38) face the bottom end of the box body (1);
the energy reduction unit (4) comprises:
the first chain plates (41) are arranged in a group, and the four first chain plates (41) are symmetrically distributed at the middle position of each side wall of the box body (1) in a group shape;
the two vertical plates (42) are in a group and are fixedly arranged on the end face of each group of first chain plates (41) close to the middle position of the box body (1);
a first telescopic member (43) slidably mounted in the middle of each group of vertical plates (42);
two chain plates (44) are arranged in a group and fixedly arranged at the middle positions of the two side walls of the box body (1) by taking the length as a reference;
the horizontal plates (45) are fixedly arranged on the end surfaces of each group of second chain plates (44) close to the middle position of the box body (1);
the cross beams (46) are uniformly arranged in the middle of the bottom surface of the box cover (11), and the cross beams (46) are of a double-layer plate-shaped structure;
the second telescopic piece (47) is slidably arranged in the middle of each horizontal plate (45) and the cross beam (46);
and the rubber pads (48) are detachably arranged on the end face of each second telescopic piece (47) close to the battery cell (22).
2. The battery structure of an electric tricycle of claim 1, wherein: the novel anti-theft box is characterized in that a box cover (11) which is just opposite to the box cover is arranged at the top end of the box body (1), a waterproof sealing ring (12) is arranged between the box cover (11) and the box body (1), meanwhile, the box body (1) and the box cover (11) are fixedly connected through uniformly arranged bolts, a shell (13) is detachably arranged at the middle position of the top surface of the box cover (11), a radiating groove (14) is uniformly formed in the end surface of the shell (13), a symmetrical base (15) is fixedly arranged at the inner bottom wall of the box body (1), the base (15) and a bottom guard plate (21) are detachably arranged through the bolts, an interface end (16) which is symmetrically distributed is arranged on the side wall of one end outside the box body (1), and a handle ring (17) which is fixedly connected with the box body (1) is arranged between the interface end (16).
3. The battery structure of an electric tricycle of claim 1, wherein: the utility model discloses a box, including box (1) and jack-up column (491), annular piece (493), telescopic spring (494) and key-type board (492) are formed jointly, all even slidable mounting has jack-up column (491) on every vertical board (42) and horizontal plate (45), and the quantity is three jack-up column (491) is kept away from the terminal surface of box (1) lateral wall and is installed key-type board (492) jointly, every jack-up column (491) outer wall all is the symmetry form and is provided with two annular piece (493), and wherein is close to sliding fit installation between annular piece (493) and jack-up column (491) of box (1) one side, and fixed connection is provided with telescopic spring (494) between two annular piece (493) on the outer wall of jack-up column (491), and telescopic spring (491) both ends are fixed connection all with annular piece (493).
4. The battery structure of an electric tricycle of claim 1, wherein: the PC board (26) top that is close to end plate (25) position is installed corner guard board (271), and through bolt fixed mounting there being epoxy board (272) between two corner guard boards (271) with box (1) width as the benchmark, limit backplate (273) are all installed to the one end intermediate position that box (1) lateral wall was kept away from to every end plate (25), and two of homonymy be provided with jointly between limit backplate (273) and be symmetrical form distributed draw piece (274), and through bolt detachable installation between limit backplate (273) and the draw piece (274), every adjacent two be provided with jointly between top backplate (23) and separate backplate (275).
5. The battery structure of an electric tricycle of claim 1, wherein: the key-shaped grooves (28) on the copper bars (24) are in one-to-one correspondence with the middle positions of the aluminum bars (29), soft heat conduction pads (241) are uniformly arranged at the middle positions of the end faces, close to the inner wall of the box body (1), of each copper bar (24), the soft heat conduction pads (241) are symmetrically distributed on the two sides of the key-shaped grooves (28) on each copper bar (24), heat dissipation plates (242) are mounted on each soft heat conduction pad (241), and arrow-shaped pieces (243) which are linearly distributed are rotatably mounted on the heat dissipation plates (242) through lugs.
6. The battery structure of an electric tricycle of claim 1, wherein: one end of the valve core (35) close to the box cover (11) is of a conical chamfer structure, so that the valve core is matched with the inlet end of the valve body (31) close to one side of the box cover (11), and meanwhile a pipeline which is mutually communicated is arranged between the valve core (35) and the conducting pipe (38).
7. The battery structure of an electric tricycle of claim 6, wherein: a groove (311) is formed in the middle of the top surface of the box cover (11), a disc-shaped pipe (312) for water cooling is arranged in the groove (311), and the disc-shaped pipe (312) is communicated with an external control system.
CN202410141584.8A 2024-02-01 2024-02-01 Battery structure of electric tricycle Active CN117673625B (en)

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CN117673625B true CN117673625B (en) 2024-04-05

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107946489A (en) * 2017-11-23 2018-04-20 江西安驰新能源科技有限公司 A kind of battery modules
CN214957122U (en) * 2021-07-05 2021-11-30 天津市捷威动力工业有限公司 Soft-packaged electric core arrangement structure of inserted liquid cooling plate form
CN217405551U (en) * 2022-04-14 2022-09-09 阿布力克木·依布拉依木 New forms of energy bus heat insulation can device that falls
CN218334100U (en) * 2022-08-02 2023-01-17 峰飞航空科技(昆山)有限公司 Replaceable battery box
CN218548657U (en) * 2022-10-19 2023-02-28 楚能新能源股份有限公司 Battery pack tray

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107946489A (en) * 2017-11-23 2018-04-20 江西安驰新能源科技有限公司 A kind of battery modules
CN214957122U (en) * 2021-07-05 2021-11-30 天津市捷威动力工业有限公司 Soft-packaged electric core arrangement structure of inserted liquid cooling plate form
CN217405551U (en) * 2022-04-14 2022-09-09 阿布力克木·依布拉依木 New forms of energy bus heat insulation can device that falls
CN218334100U (en) * 2022-08-02 2023-01-17 峰飞航空科技(昆山)有限公司 Replaceable battery box
CN218548657U (en) * 2022-10-19 2023-02-28 楚能新能源股份有限公司 Battery pack tray

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