WO2022262182A1 - 电池总成、电动车辆、设计方法、设备及存储介质 - Google Patents

电池总成、电动车辆、设计方法、设备及存储介质 Download PDF

Info

Publication number
WO2022262182A1
WO2022262182A1 PCT/CN2021/130069 CN2021130069W WO2022262182A1 WO 2022262182 A1 WO2022262182 A1 WO 2022262182A1 CN 2021130069 W CN2021130069 W CN 2021130069W WO 2022262182 A1 WO2022262182 A1 WO 2022262182A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixedly connected
boss
battery assembly
bosses
plate
Prior art date
Application number
PCT/CN2021/130069
Other languages
English (en)
French (fr)
Inventor
卢军
孙焕丽
于长虹
李黎黎
许立超
乔延涛
刘鹏
曹云飞
Original Assignee
中国第一汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2022262182A1 publication Critical patent/WO2022262182A1/zh

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/242—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
    • H01M50/244—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
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • This application relates to the technical field of new energy vehicles, for example, it relates to a battery assembly, an electric vehicle, a design method, equipment and a storage medium.
  • New energy vehicles have the advantages of high energy efficiency, zero emissions, no pollution, high specific energy, low noise, and high reliability.
  • the power battery system mainly ensures the driving of the vehicle, the power demand of high and low voltage components, the recovery of braking energy, and the energy regulation of the hybrid engine system.
  • the lower box and liquid cooling plate of the battery assembly are the core components of the structure, protection and thermal management of the battery assembly, and their importance is self-evident.
  • Most of the battery modules use CTP battery assembly (integrated battery assembly, Cell to Pack), and the liquid cooling plate of the battery is loaded, which is easy to cause damage to the liquid cooling plate, has a high risk of failure, and has low safety performance.
  • Embodiments of the present application provide a battery assembly, an electric vehicle, a design method, equipment, and a storage medium.
  • the embodiment of the present application provides a battery assembly, including:
  • the lower box, the lower box includes:
  • a frame comprising a front beam, a rear beam and two side beams, and the two ends of each side beam are respectively fixedly connected to the front beam and the rear beam;
  • At least one longitudinal beam the two ends of each of the longitudinal beams are fixedly connected to the front beam and the rear beam respectively, the bottom surface of each of the longitudinal beams is provided with a plurality of first bosses, and the plurality of first bosses are evenly spaced along the length direction of the stringer;
  • a plurality of cross beams are arranged parallel to each other, the two ends of each of the cross beams are respectively fixedly connected to the two side beams, each of the longitudinal beams is fixedly connected to a plurality of the cross beams, each of the The bottom surface of the beam is provided with a plurality of second bosses;
  • a liquid cold plate the liquid cold plate includes a plurality of first installation ports and a plurality of second installation ports penetrating through, the liquid cold plate is fixedly connected to the lower box, and each of the first installation ports snaps into One of the first bosses, each of the second mounting ports is engaged with one of the second bosses, the upper surface of the liquid cooling plate can be fixedly connected to the battery module, and the liquid cooling plate is configured to cool The battery module.
  • an embodiment of the present application provides an electric vehicle, including the above-mentioned battery assembly.
  • the embodiment of the present application provides a design method for designing the above-mentioned liquid cold plate, including the following steps:
  • Step S1 input the number of battery modules in the design software, and design the number of total flow channels;
  • Step S2 designing the number of sub-flow channels in each of the total flow channels, wherein the number of the sub-flow channels is 2 to 5;
  • Step S3 designing a spoiler structure in the total flow channel
  • Step S4 using computational fluid dynamics simulation to adjust the flow distribution of the total flow channel.
  • an electronic device including:
  • a memory configured to store at least one program
  • the at least one processor When the at least one program is executed by the at least one processor, the at least one processor implements the above-mentioned design method.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above design method is implemented.
  • Fig. 1 is a structural schematic diagram 1 of a battery assembly provided in Embodiment 1 of the present application;
  • Fig. 2 is a schematic structural diagram II of the battery assembly provided in Embodiment 1 of the present application;
  • Fig. 3 is a structural schematic diagram 1 of the lower box body provided by Embodiment 1 of the present application;
  • Fig. 4 is a partially enlarged structural schematic diagram of part A in Fig. 3;
  • Fig. 5 is a structural schematic diagram 1 of the liquid-cooled plate provided in Embodiment 1 of the present application.
  • Fig. 6 is a partial enlarged structural schematic diagram of part B in Fig. 5;
  • Fig. 7 is a schematic diagram II of the structure of the liquid-cooled plate provided in Embodiment 1 of the present application.
  • FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • Liquid cold plate 21. First installation port; 22. Second installation port; 23. Upper plate; 24. Lower plate; 241. Runner; 2411. Water outlet; 2412. Water inlet; 2414, shunt channel; 2415, spoiler ring; 2416, spoiler channel; 25, outlet pipe joint; 251, connecting boss; 26, water inlet pipe joint; 27, insulating strip;
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the embodiment of the present application provides a battery assembly, including a lower case 1 and a liquid cooling plate 2 .
  • the lower box body 1 includes a frame 11 , at least one longitudinal beam 12 , and a plurality of cross beams 13 .
  • the frame 11 includes a front beam 111, a rear beam 112 and two side beams 113, the two ends of each side beam 113 are respectively fixedly connected to the front beam 111 and the rear beam 112; the two ends of each longitudinal beam 12 are respectively fixedly connected to the front beam 111 and rear beam 112, in this embodiment, the battery assembly is provided with a longitudinal beam 12, located in the middle of the lower box 1, and the battery assembly is also provided with two parallel beams 13; in other embodiments, also Other numbers of longitudinal beams 12 and cross beams 13 may be provided according to the number and volume of the battery modules.
  • each longitudinal beam 12 is provided with a plurality of first bosses 121, and the plurality of first bosses 121 are evenly spaced along the longitudinal direction of the longitudinal beam 12.
  • Both ends of each crossbeam 13 are fixedly connected to two side beams 113 respectively, and a plurality of crossbeams 13 are arranged parallel to each other; crossbeams 13 and longitudinal beams 12 are crossed and fixedly connected.
  • the longitudinal beams 12 can be divided into multiple short The beams are respectively fixedly connected with the front beam 111, the rear beam 112 and a plurality of parallel beams 13, so as to be combined into a longitudinal beam 12 and form a fishbone frame in which the beams 13 and the longitudinal beams 12 are cross-connected.
  • a bottom surface of the beam 13 is provided with a plurality of second bosses 131 .
  • the liquid cold plate 2 includes a plurality of first installation ports 21 and a plurality of second installation ports 22 that pass through.
  • the liquid cold plate 2 is fixedly connected to the lower box body 1.
  • the installation port 22 is clamped to the second boss 131, and the side of the liquid cooling plate 2 is fixedly connected to the lower box body 1.
  • the connection methods between the liquid cooling plate 2 and the lower box body 1 include but are not limited to friction stir welding, rivet connection, structural Adhesive bonding.
  • the upper surface of the liquid cold plate 2 can be fixedly connected to the battery module, and the liquid cold plate 2 is configured to cool the battery module.
  • the frame 11, the longitudinal beams 12, and the beams 13 can be made of high-strength metal materials such as aluminum alloy, titanium alloy, iron alloy, etc., wherein the beam 13 is extruded as an integral profile and has better structural strength.
  • the lower box body 1 is also provided with shoulder lugs and rear lugs for fixedly connecting external structural parts; the connection method between the structural parts of the lower box body 1 can be friction stir welding, arc welding, etc., according to The specific shape and location of the structure are selected.
  • the lower box body 1 is provided with four second bosses 131 and three first bosses 121, which are used as fixed position points between the liquid cooling plate 2 and the lower box body 1;
  • the fixed position and the number of fixed points of the cabinet 1 need to be theoretically calculated in combination with the force of the liquid-cooled plate 2 .
  • the number of fixed points is 4-10, which is not limited in this embodiment.
  • the lower box 1 is arranged around the battery module.
  • the lower box 1 has no bottom surface structure, and the liquid cooling plate 2 is directly connected to the lower box 1.
  • the battery The heat of the module will be quickly transferred to the lower box 1 through the liquid cold plate 2, effectively delaying thermal runaway; the force on the lower box 1 can also be quickly transferred to the inside of the liquid cold plate 2, and the coolant inside the liquid cold plate 2 can be Aiming at the vibration of the whole battery assembly during the driving process of the car, it plays the role of damping and reducing vibration, delays the vibration frequency, and enhances the system's ability to resist vibration; the frame 11 can protect the liquid cold plate 2 from being crushed, and ensure the side of the battery assembly.
  • the liquid cooling plate 2 and the first boss 121 and the second boss 131 of the lower box 1 are fixedly connected to each other to complete the sealing of the battery assembly.
  • the first boss 121 and the second boss 131 can effectively carry the part of the battery module Weight, disperse the weight of the battery module to multiple structures, reduce the pressure of local force, reduce the weight of the battery module carried by the liquid cooling plate 2, avoid excessive stress concentration, and improve the overall bearing strength of the battery assembly;
  • the longitudinal beam 12 and Multiple independent spaces are formed between the beams 13, and each independent space can place a separate battery module.
  • the longitudinal beams 12 and beams 13 between different space areas can effectively block the heat spread and high-voltage arcing of the battery modules.
  • the integrated design of the liquid cooling plate 2 and the lower box 1 can increase the life of the liquid cooling plate 2 and reduce the fatigue damage caused by the impact of the cooling liquid on the liquid cooling plate 2 under long-term working conditions.
  • the space layout of the battery assembly is simple, realizing a highly integrated design, improving space utilization and structural strength, high safety performance, and good cooling effect.
  • the liquid cooling plate 2 includes an upper plate 23 , a lower plate 24 , a water outlet pipe joint 25 and a water inlet pipe joint 26 .
  • the upper surface of the upper plate 23 abuts the lower surface of the longitudinal beam 12 and the lower surface of the cross beam 13, the upper plate 23 is a flat plate; the lower plate 24 is provided with a plurality of interconnected flow channels 241, and the lower plate 24 is attached to the upper plate 23, and close the flow channel 241, the upper plate 23 and the lower plate 24 can be fixedly connected by brazing, for example, the distance between the fixed boundary of the battery module and the brazing position of the liquid cooling plate 2 itself is 10-20 mm, Avoid affecting the performance of the battery module.
  • the flow channel 241 includes a water outlet 2411 and a water inlet 2412; the outlet pipe joint 25 is fixedly connected to the upper plate 23, and the outlet pipe joint 25 is connected to the water outlet 2411; the water inlet joint 26 is fixedly connected to the upper plate 23, The water inlet pipe joint 26 communicates with the water inlet port 2412 to form a heat management closed circuit.
  • the liquid cooling plate 2 in this embodiment has fewer water pipe joints, so as to avoid condensation inside the battery pack and affect the performance of the battery module.
  • the upper board 23 and the lower board 24 can use punched aluminum boards, blown aluminum boards and the like.
  • the outlet pipe joint 25 and the water inlet pipe joint 26 are arranged on the front end of the liquid cooling plate 2, so as to be convenient to protrude out of the battery assembly.
  • the second boss 131 is a stepped boss, including boss one 1311 and boss two 1312 , boss one 1311 is fixedly connected to boss two 1312 , boss two 1312 is fixedly connected
  • the width of the boss 2 1312 is greater than the width of the beam 13 .
  • the second boss 1312 snaps into the second installation opening 22 of the upper board 23
  • the first boss 1311 snaps into the second installation opening 22 of the lower board 24 .
  • the width of the first boss 1311 is 2-10 mm
  • the width of the second boss 1312 is 5-8 mm longer than that of the first boss 1311, so as to prevent the second boss 131 which is too wide from affecting the fixing of the battery module.
  • the stepped boss can enhance the connection strength between the liquid cooling plate 2 and the lower box body 1, and improve the overall sealing performance of the battery assembly.
  • the first boss 1311 is connected to the lower plate 24 by welding
  • the second boss 1312 is connected to the upper plate 23 with sealant, so as to prevent the weld of the upper plate 23 from affecting the fixing of the battery module; in addition
  • sealant is applied to the position where the upper plate 23 abuts against the longitudinal beam 12 and the cross beam 13 to further enhance the sealing performance.
  • the front beam 111 includes two water pipe installation ports 1111, the water outlet pipe joint 25 and the water inlet pipe joint 26 both include a connecting boss 251, and the connecting boss 251 is clipped to the water pipe installing port 1111.
  • the outlet pipe joint 25 and the water inlet pipe joint 26 also include a limiting platform, the connecting boss 251 is arranged on the limiting platform, and the limiting platform is used to check the positions of the outlet pipe joint 25 and the water inlet pipe joint 26. To ensure that the relative position of the liquid cold plate 2 and the lower box 1 is accurate.
  • connection boss 251 and the water pipe installation port 1111 are fixedly connected by welding, so as to realize the complete sealing of the battery assembly and avoid the risk of failure caused by the use of sealing rings and other structures; at the same time, the outlet pipe joint 25 and The welding connection between the water inlet pipe joint 26 and the front beam 111 can enhance the structural strength of the front end of the lower box 1 and improve the structural strength of the liquid cooling plate 2 .
  • the installation of water pipe joints can be saved. time, reducing installation errors and leakage risks caused by manual operations.
  • the liquid cooling plate 2 further includes a plurality of insulating strips 27 , a heat conduction structure and a plurality of fixing columns 28 .
  • the insulating strip 27 is fixedly connected to the upper surface of the upper plate 23, and a plurality of insulating strips 27 are evenly spaced;
  • the heat conduction structure is arranged on the upper surface of the upper plate 23, and the heat conduction structure abuts the battery module;
  • a plurality of fixing columns 28 are fixedly connected to the upper
  • the plate 23, the fixing posts 28 are configured to fix external equipment.
  • external devices include but are not limited to switches such as high-voltage distribution boxes, BMS, and fuses.
  • the heat transfer between the liquid cooling plate 2 and the battery module is carried out through a heat conduction structure.
  • the heat conduction structure includes but is not limited to heat conduction glue, heat conduction pad, etc., which are not listed here in this embodiment.
  • the insulating strip 27 is used to realize the insulation between the battery module and the liquid cooling plate 2, and limit the height of the heat conduction structure.
  • the material of the insulating strip 27 includes but not limited to mica sheet, PC (Polycarbonate, polycarbonate), polyurethane and other non-metallic high insulating material.
  • the fixing column 28 is arranged at the front end of the upper plate 23 and there is no flow channel 241 in the lower part.
  • the fixing column 28 can adopt M5-M8 threaded column; in one embodiment, a plurality of fixing columns 28 are collectively arranged at the front end of the upper plate 23 close to the front beam 111 in the area.
  • the liquid cooling plate 2 of this embodiment has a strong structural bearing capacity, and can be connected to external equipment by arranging the fixing columns 28 in a centralized manner.
  • the flow channel 241 includes three total flow channels 2413 and a spoiler structure. Three total flow channels 2413 are arranged in parallel, the total flow channel 2413 includes a water inlet and a water outlet, the three water inlets are all connected to the water inlet pipe joint 26, and the three water outlets are all connected to the water outlet pipe joint 25; each total flow channel 2413 includes four shunts channel 2414, four sub-flow channels 2414 are arranged in parallel; the spoiler structure is configured to adjust the flow distribution of the three total flow channels 2413, through the spoiler structure, the flow of the three total flow channels 2413 can be made uniform, and the overall cooling of the liquid cold plate 2 is improved performance.
  • the runner 241 in this implementation has the advantages of simple structure, high working efficiency and good cooling effect.
  • the spoiler structure includes a spoiler ring 2415 and a spoiler channel 2416 .
  • the distances between the three parallel main flow passages 2413 and the water inlet pipe joint 26 and the water outlet pipe joint 25 are different, and the spoiler ring 2415 is arranged in the main flow passage 2413 close to the water inlet pipe joint 26 and the water outlet pipe joint 25,
  • the spoiler channel 2416 is arranged at the water inlet and the water outlet of the total flow channel 2413 .
  • the quantity and position of the spoiler ring 2415 and the spoiler channel 2416 can be calculated according to computational fluid dynamics simulation, which is not limited in this embodiment.
  • This embodiment provides an electric vehicle, including the battery assembly in Embodiment 1.
  • the electric vehicle uses the battery assembly in Embodiment 1 to realize the high integration of the liquid cooling plate 2 and the lower box 1, the integration of the internal flow channel 241 of the liquid cooling plate 2 and the water inlet pipe joint 26, and the water outlet pipe joint 25 to improve the battery life.
  • the safety performance of the assembly taking into account the fixed bearing and thermal management functions of the liquid cold plate 2 on the battery module or single cell, can effectively ensure the safety of the battery assembly on the basis of ensuring the function of the battery assembly, and realize the safety of the battery assembly. Lightweight design reduces R&D costs.
  • This embodiment provides a design method for designing the liquid cooling plate 2 in Embodiment 1 and Embodiment 2, including the following steps:
  • Step S1 input the number of battery modules in the design software, and design the number of total flow channels 2413;
  • the total flow channel 2413 designed in parallel can enhance the mechanical reliability of the battery assembly and improve the overall fatigue performance.
  • the number of battery modules is twice the number of total flow channels 2413. In other embodiments, other numbers of total flow channels 2413 may also be provided according to the number and volume of battery modules.
  • Step S2 designing a sub-flow channel 2414 in each main flow channel 2413, wherein the number of sub-flow channels 2414 is 2-5;
  • the number of parallel flow distribution channels 2414 is calculated, and the number of commonly used flow distribution channels 2414 is 3 to 6.
  • the overall cooling performance of the liquid cold plate 2 is improved by setting the plurality of subflow channels 2414 in parallel.
  • Step S3 designing a spoiler structure in the main flow channel 2413;
  • the spoiler structure is used to adjust the flow distribution of multiple total flow channels 2413.
  • the flow of multiple total flow channels 2413 can be evenly distributed, wherein the number and position of the spoiler ring 2415 and the spoiler channel 2416 , which can be calculated from computational fluid dynamics simulations.
  • Step S4 using computational fluid dynamics simulation (CFD simulation, Computational Fluid Dynamics simulation), adjust the flow distribution of the total flow channel 2413;
  • the diameter of the water inlet of the main flow channel 2413 is set from small to large, and the overall cooling performance of the liquid cold plate 2 is improved.
  • the diameter of the water inlet pipe joint 26 that is closer to the water inlet is smaller.
  • FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 8 , the electronic device includes: one or more processors 410 and a memory 420 . One processor 410 is taken as an example in FIG. 8 .
  • the electronic device may further include: an input device 430 and an output device 440 .
  • the processor 410, the memory 420, the input device 430 and the output device 440 in the electronic device may be connected via a bus or in other ways. In FIG. 8, connection via a bus is taken as an example.
  • the memory 420 can be configured to store software programs, computer-executable programs and modules.
  • the processor 410 executes various functional applications and data processing by running software programs, instructions and modules stored in the memory 420, so as to implement any method in the above-mentioned embodiments.
  • the memory 420 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the electronic device, and the like.
  • the memory may include a volatile memory such as a random access memory (Random Access Memory, RAM), and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device or other non-transitory solid-state storage device.
  • RAM Random Access Memory
  • Memory 420 may be a non-transitory computer storage medium or a transitory computer storage medium.
  • the non-transitory computer storage medium is, for example, at least one magnetic disk storage device, flash memory device or other non-volatile solid-state storage device.
  • the memory 420 may optionally include memory located remotely relative to the processor 410, and these remote memories may be connected to the electronic device through a network. Examples of the above-mentioned network may include Internet, enterprise intranet, local area network, mobile communication network and combinations thereof.
  • the input device 430 may be configured to receive input numbers or character information, and generate key signal input related to user settings and function control of the electronic device.
  • the output device 440 may include a display device such as a display screen.
  • This embodiment also provides a computer-readable storage medium storing a computer program, and the computer program is used to execute the above method.
  • the storage medium may be a non-transitory storage medium.
  • the non-transitory computer-readable storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or RAM, etc.
  • Embodiments of the present application provide a battery assembly, an electric vehicle, a design method, equipment, and a storage medium.
  • the liquid-cooled plate in the battery assembly is highly integrated with the lower box, the liquid-cooled plate has a strong load-bearing capacity, simple structural layout, and space utilization High efficiency, high integration of structural parts, and high safety performance of battery modules.
  • the battery assembly provided by the embodiment of the present application cancels the bottom structure of the lower box, and the liquid cooling plate is directly connected to the lower box.
  • the lower box can effectively delay thermal runaway; the force received by the lower box can also be quickly transmitted to the liquid cold plate, and the coolant inside the liquid cold plate can play a role in damping and reducing the vibration of the battery assembly during the driving process of the car, delaying
  • the vibration frequency enhances the system's ability to resist vibration; the frame can protect the liquid cooling plate, prevent the liquid cooling plate from being crushed, ensure the side impact performance of the battery assembly, and improve safety performance.
  • the liquid cooling plate is fixedly connected to the first boss and the second boss of the lower box to complete the sealing of the battery assembly.
  • the first boss and the second boss can effectively bear part of the weight of the battery module, and the battery module
  • the weight of the battery is distributed to multiple structures, reducing the local pressure on the liquid cooling plate, reducing the weight of the battery module carried by the liquid cooling plate, avoiding excessive stress concentration, and improving the overall bearing strength of the battery assembly.
  • Multiple independent spaces are formed between the longitudinal beams and the cross beams. Each independent space can place a separate battery module.
  • the longitudinal beams and cross beams between different space areas can effectively block the heat spread and high-voltage arcing of the battery modules.
  • the integrated design of the liquid cooling plate and the lower box can increase the life of the liquid cooling plate and reduce the fatigue damage caused by the impact of the coolant on the liquid cooling plate under long-term working conditions.
  • the space layout of the battery assembly of electric vehicles is simple, realizes highly integrated design, improves space utilization and structural strength, has high safety performance and good cooling effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Evolutionary Computation (AREA)
  • Mathematical Analysis (AREA)
  • Computer Hardware Design (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Sustainable Development (AREA)
  • Fluid Mechanics (AREA)
  • Mathematical Physics (AREA)
  • Computing Systems (AREA)
  • Algebra (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computational Mathematics (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请实施例涉及一种电池总成、电动车辆、设计方法、设备及存储介质。电池总成包括下箱体和液冷板，下箱体包括边框、纵梁和横梁。边框包括前梁、后梁和侧边梁；纵梁两端分别固定连接于前梁和后梁，底面设置有多个第一凸台；多个横梁相互平行设置，两端分别固定连接两面侧边梁，横梁和纵梁交叉固定连接，横梁底面设置有多个第二凸台；液冷板包括贯穿的多个第一安装口和多个第二安装口，液冷板固定连接于下箱体，第一安装口卡接第一凸台，第二安装口卡接第二凸台，液冷板上表面连接电池模组。

Description

电池总成、电动车辆、设计方法、设备及存储介质
本申请要求在2021年06月18日提交中国专利局、申请号为202110678080.6的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及新能源汽车技术领域，例如涉及一种电池总成、电动车辆、设计方法、设备及存储介质。
背景技术
目前，新能源汽车的发展前景非常广阔。新能源汽车具有能量效率高、零排放、无污染、比能量高、噪音低、可靠性高等优点。动力电池系统作为新能源电池车的主要储能部件，主要保证整车的行驶、高低压零部件的用电需求、制动能量回收、混合动力发动机系统能量调节等功能。电池总成的下箱体与液冷板作为电池总成的结构、保护和实现热管理功能的核心部件，其重要性不言而喻。电池模组多采用CTP电池总成(集成化电池总成，Cell to Pack)，电池的液冷板承重，容易造成液冷板破坏，有很高的失效风险，安全性能较低。
发明内容
本申请实施例提供一种电池总成、电动车辆、设计方法、设备及存储介质。
一方面，本申请实施例提供一种电池总成，包括：
下箱体，所述下箱体包括：
边框，所述边框包括前梁、后梁和两面侧边梁，每个所述侧边梁的两端分别固定连接于所述前梁和所述后梁；
至少一个纵梁，每个所述纵梁的两端分别固定连接于所述前梁和所述后梁，每个所述纵梁的底面设置有多个第一凸台，多个所述第一凸台沿所述纵梁的长度方向间隔均匀设置；以及
多个横梁，多个所述横梁相互平行设置，每个所述横梁的两端分别固定连接两面所述侧边梁，每个所述纵梁和多个所述横梁交叉固定连接，每个所述横梁的底面设置有多个第二凸台；
液冷板，所述液冷板包括贯穿的多个第一安装口和多个第二安装口，所述液冷板固定连接于所述下箱体，每个所述第一安装口卡接一个所述第一凸台，每个所述第二安装口卡接一个所述第二凸台，所述液冷板的上表面能够固定连 接电池模组，所述液冷板被配置为冷却所述电池模组。
另一方面，本申请实施例提供一种电动车辆，包括上述的电池总成。
另一方面，本申请实施例提供一种设计方法，用于设计上述的液冷板，包括以下步骤：
步骤S1、在设计软件中输入电池模组的数量，设计总流道的数量；
步骤S2、在每个所述总流道中设计分流道的数量，其中，所述分流道的数量为2～5条；
步骤S3、在所述总流道中设计扰流结构；
步骤S4、采用计算流体动力学仿真，调节所述总流道的流量分配。
另一方面，本申请实施例提供一种电子设备，包括：
至少一个处理器；
存储器，设置为存储至少一个程序，
当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如上所述的设计方法。
另一方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如上所述的设计方法。
附图说明
图1是本申请实施例一提供的电池总成的结构示意图一；
图2是本申请实施例一提供的电池总成的结构示意图二；
图3是本申请实施例一提供的下箱体的结构示意图一；
图4是图3中A部分的局部放大结构示意图；
图5是本申请实施例一提供的液冷板的结构示意图一；
图6是图5中B部分的局部放大结构示意图；
图7是本申请实施例一提供的液冷板的结构示意图二；
图8为本申请实施例提供的一种电子设备的结构示意图。
图中：
1、下箱体；11、边框；111、前梁；1111、水管安装口；112、后梁；113、侧边梁；12、纵梁；121、第一凸台；13、横梁；131、第二凸台；1311、凸台一；1312、凸台二；
2、液冷板；21、第一安装口；22、第二安装口；23、上板；24、下板；241、 流道；2411、出水端；2412、入水端；2413、总流道；2414、分流道；2415、扰流环；2416、扰流道；25、出水管接头；251、连接凸台；26、入水管接头；27、绝缘条；28、固定柱。
具体实施方式
下面结合附图和实施例对本申请进行说明。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
实施例一
如图1-图7所示，本申请实施例提供一种电池总成，包括下箱体1和液冷板2。下箱体1包括边框11、至少一个纵梁12、多个横梁13。边框11包括前梁111、后梁112和两面侧边梁113，每个侧边梁113的两端分别固定连接于前梁111和后梁112；每个纵梁12的两端分别固定连接于前梁111和后梁112，在本实施例中，电池总成设置有一根纵梁12，位于下箱体1的中间，电池总成同时设置有两根相互平行的横梁13；在其他实施例中，也可以根据电池模组的数量和体积大小，设置其他数量的纵梁12和横梁13。每个纵梁12的底面设置 有多个第一凸台121，多个第一凸台121沿纵梁12的长度方向间隔均匀设置。每个横梁13的两端分别固定连接两面侧边梁113，多个横梁13相互平行设置；横梁13和纵梁12交叉固定连接，在本实施例中，可将纵梁12分为多根短梁，分别与前梁111、后梁112和多根平行设置的横梁13固定连接，从而组合成一根纵梁12，并形成横梁13和纵梁12交叉连接的鱼骨状框架。横梁13的底面设置有多个第二凸台131。液冷板2包括贯穿的多个第一安装口21和多个第二安装口22，液冷板2固定连接于下箱体1，第一安装口21卡接第一凸台121，第二安装口22卡接第二凸台131，且液冷板2的侧面与下箱体1固定连接，液冷板2与下箱体1的连接方式包括但不限于搅拌摩擦焊接、铆钉连接、结构胶粘接。液冷板2的上表面能够固定连接电池模组，液冷板2被配置为冷却电池模组。在一实施例中，边框11、纵梁12和横梁13可采用铝合金、钛合金、铁合金等高强度金属材料，其中，横梁13为一体型材挤出，具有较好的结构强度。下箱体1上还设置有肩部吊耳和后部吊耳，用于固定连接外部结构件；下箱体1的结构件之间的连接方式可采用搅拌摩擦焊接、弧焊等，可根据结构的具体形状和位置进行选择。在本实施例中，下箱体1共设置有四个第二凸台131和三个第一凸台121，作为液冷板2与下箱体1的固定位置点；液冷板2与下箱体1的固定位置和固定点数量需要结合液冷板2的受力情况进行理论计算，通常固定点数量为4～10处，本实施例在此并不做限制。
本申请实施例的电池总成，下箱体1设置在电池模组四周，下箱体1没有底面结构，液冷板2与下箱体1直接连接，一旦电池单体发生热失控时，电池模组的热量会迅速通过液冷板2传递给下箱体1，有效延缓热失控；下箱体1所受到的力也可以快速传递到液冷板2内部，液冷板2内部的冷却液可以针对汽车行驶过程中整个电池总成的振动起到阻尼减振的作用，延缓振动频率，增强系统抵抗振动的能力；边框11可以保护液冷板2，防止被压溃，保证电池总成的侧碰性能，提升安全性能。液冷板2与下箱体1的第一凸台121、第二凸台131相互固定连接完成电池总成的密封，第一凸台121、第二凸台131可以有效承载电池模组的部分重量，将电池模组的重量分散至多个结构，降低局部受力的压力，减轻液冷板2承载的电池模组重量，避免应力过度集中，提升电池总成整体的承载强度；纵梁12和横梁13之间形成多个独立空间，每一个独立空间都可以放置单独的电池模组，不同空间区域之间的纵梁12和横梁13可以有效阻隔电池模组的热量蔓延、高压拉弧。液冷板2与下箱体1的一体化设计，可以提升液冷板2的寿命，减小长时间工况使用冷却液对液冷板2冲击造成的 疲劳破坏。电池总成空间布置简单，实现高度集成化设计，提升空间利用率和结构强度，安全性能高、冷却效果好。
在一实施例中，参见图1、2，液冷板2包括上板23、下板24、出水管接头25和入水管接头26。上板23的上表面抵接纵梁12的下表面和横梁13的下表面，上板23为平面板；下板24设置有多条相互连通的流道241，下板24贴合于上板23的下表面，并封闭流道241，上板23和下板24可采用钎焊进行固定连接，例如，电池模组的固定边界和液冷板2自身钎焊位置的距离为10～20mm，避免影响电池模组性能。参见图7，流道241包括出水端2411和入水端2412；出水管接头25固定连接于上板23上，出水管接头25连通于出水端2411；入水管接头26固定连接于上板23上，入水管接头26连通于入水端2412，形成热管理闭合回路。本实施例的液冷板2的水管接头较少，避免在电池包内部造成凝露，影响电池模组性能。在一实施例中，上板23和下板24可使用冲压铝板、吹胀铝板等。出水管接头25和入水管接头26设置于液冷板2的前端，便于伸出电池总成外部。
在一实施例中，参见图4，第二凸台131为阶梯状凸台，包括凸台一1311和凸台二1312，凸台一1311固定连接于凸台二1312，凸台二1312固定连接于横梁13，凸台二1312的宽度大于横梁13的宽度。凸台二1312卡接上板23的第二安装口22，凸台一1311卡接下板24的第二安装口22。其中，凸台一1311的宽度为2～10mm，凸台二1312的宽度比凸台一1311的宽度长5～8mm，避免过宽的第二凸台131影响电池模组的固定。阶梯状凸台能增强液冷板2与下箱体1的连接强度，提高电池总成整体的密封性能。在一实施例中，凸台一1311与下板24通过焊接进行连接，凸台二1312与上板23采用密封胶进行连接，避免上板23的焊缝影响电池模组的固定；除此之外，上板23抵接纵梁12和横梁13的位置涂抹密封胶，进一步增强密封性能。
在一实施例中，参见3、5及6，前梁111包括两个水管安装口1111，出水管接头25和入水管接头26均包括连接凸台251，连接凸台251卡接于水管安装口1111。在一实施例中，出水管接头25和入水管接头26还包括限位台，连接凸台251设置于限位台上，限位台用于对出水管接头25和入水管接头26的位置进行限制，保证液冷板2与下箱体1的相对位置准确。在一实施例中，连接凸台251与水管安装口1111采用焊接进行固定连接，实现电池总成整体的完全密封，避免采用密封圈等结构可能带来的失效风险；同时，出水管接头25和入水管接头26与前梁111的焊接连接能增强下箱体1前端的结构强度，提升液冷 板2的结构强度。本实施例的电池总成内部没有水管接头，降低了接头失效带来的冷却液泄露风险，通过将出水管接头25和入水管接头26与液冷板2焊接成一体，可以节省水管接头的安装时间，降低人工操作造成的安装失误以及泄露风险。
在一实施例中，参见5，液冷板2还包括多条绝缘条27、导热结构和多个固定柱28。绝缘条27固定连接于上板23的上表面，多条绝缘条27间隔均匀设置；导热结构设置于上板23的上表面，导热结构抵接电池模组；多个固定柱28固定连接于上板23，固定柱28被配置为固定外部设备。例如，外部设备包括但不限于高压配电盒、BMS、熔断器等开关。液冷板2与电池模组之间通过导热结构相互传热，导热结构包括但不限于导热胶、导热垫等，本实施例在此不再一一列举。绝缘条27用于实现电池模组与液冷板2的绝缘，并限制导热结构的高度，绝缘条27的材料包括但不限于云母片、PC(Polycarbonate，聚碳酸酯)、聚氨酯等非金属高绝缘性材料。固定柱28布置在上板23前端且下部没有流道241，固定柱28可采用M5-M8的螺纹柱；在一实施例中，将多个固定柱28集中设置在上板23前端靠近前梁111的区域。本实施例的液冷板2具有较强的结构承载能力，可通过集中布置固定柱28，使自身具有连接外部设备的能力。
在一实施例中，参见7，流道241包括三条总流道2413和扰流结构。三条总流道2413并联设置，总流道2413包括入水口和出水口，三个入水口均连通入水管接头26，三个出水口均连通出水管接头25；每条总流道2413包括四条分流道2414，四条分流道2414并联设置；扰流结构被配置为调节三条总流道2413的流量分配，通过扰流结构，可使得三条总流道2413的流量均匀，提升液冷板2整体的冷却性能。本实施的流道241结构简单，工作效率高，冷却效果好。
在一实施例中，扰流结构包括扰流环2415和扰流道2416。如图7所示，三条并联的总流道2413离入水管接头26和出水管接头25的距离不同，扰流环2415设置在靠近入水管接头26和出水管接头25的总流道2413内，扰流道2416设置在总流道2413的入水口和出水口处。在一实施例中，扰流环2415和扰流道2416的数量及位置，可根据计算流体动力学仿真进行计算，本实施例在此不做限制。
实施例二
本实施例提供一种电动车辆，包括实施例一中的电池总成。电动车辆采用实施例一中的电池总成，实现液冷板2与下箱体1的高度集成，液冷板2内部 流道241和入水管接头26、出水管接头25的集成化，提升电池总成的安全性能，统筹液冷板2对电池模组或者单体的固定承载与热管理功能，可以在保证电池总成的功能基础上，有效保证电池总成的安全，实现电池总成的轻量化设计，降低研发成本。
实施例三
本实施例提供一种设计方法，用于设计实施例一、实施例二中的液冷板2，包括以下步骤：
步骤S1、在设计软件中输入电池模组的数量，设计总流道2413的数量；
并联设计的总流道2413可以增强电池总成的机械可靠性，提升整体疲劳性能。在本实施例中，电池模组的数量是总流道2413数量的两倍，在其他实施例中，也可以根据电池模组的数量和体积大小，设置其他数量的总流道2413。
步骤S2、在每个总流道2413中设计分流道2414，其中，分流道2414的数量为2～5条；
通过液冷板2的压降计算并联的分流道2414，常用的分流道2414数量为3～6条。通过多条分流道2414并联设置，提升液冷板2的整体冷却性能。
步骤S3、在总流道2413中设计扰流结构；
扰流结构用于为调节多条总流道2413的流量分配，通过扰流结构，可使得多条总流道2413的流量均匀分配，其中，扰流环2415和扰流道2416的数量及位置，可根据计算流体动力学仿真进行计算。
步骤S4、采用计算流体动力学仿真(CFD仿真，Computational Fluid Dynamics仿真)，调节总流道2413的流量分配；
根据每条总流道2413入水口处到入水管接头26的距离，实现总流道2413的入水口口径从小到大设置，提升液冷板2整体的冷却性能。
在一实施例中，距离入水口越近的入水管接头26的口径越小。
图8是本申请实施例提供的一种电子设备的结构示意图，如图8所示，该电子设备包括：一个或多个处理器410和存储器420。图8中以一个处理器410为例。
所述电子设备还可以包括：输入装置430和输出装置440。
所述电子设备中的处理器410、存储器420、输入装置430和输出装置440可以通过总线或者其他方式连接，图8中以通过总线连接为例。
存储器420作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块。处理器410通过运行存储在存储器420中的软件程序、 指令以及模块，从而执行多种功能应用以及数据处理，以实现上述实施例中的任意一种方法。
存储器420可以包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需要的应用程序；存储数据区可存储根据电子设备的使用所创建的数据等。此外，存储器可以包括随机存取存储器(Random Access Memory，RAM)等易失性存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件或者其他非暂态固态存储器件。
存储器420可以是非暂态计算机存储介质或暂态计算机存储介质。该非暂态计算机存储介质，例如至少一个磁盘存储器件、闪存器件或其他非易失性固态存储器件。在一些实施例中，存储器420可选包括相对于处理器410远程设置的存储器，这些远程存储器可以通过网络连接至电子设备。上述网络的实例可以包括互联网、企业内部网、局域网、移动通信网及其组合。
输入装置430可设置为接收输入的数字或字符信息，以及产生与电子设备的用户设置以及功能控制有关的键信号输入。输出装置440可包括显示屏等显示设备。
本实施例还提供一种计算机可读存储介质，存储有计算机程序，所述计算机程序用于执行上述方法。
存储介质可以是非暂态(non-transitory)存储介质。
上述实施例方法中的全部或部分流程可以通过计算机程序来执行相关的硬件来完成的，该程序可存储于一个非暂态计算机可读存储介质中，该程序在执行时，可包括如上述方法的实施例的流程，其中，该非暂态计算机可读存储介质可以为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或RAM等。
本申请实施例提供一种电池总成、电动车辆、设计方法、设备及存储介质，电池总成中的液冷板与下箱体高度集成，液冷板承重能力强，结构布置简单、空间利用率高、结构件集成度高、电池模组安全性能高。
本申请实施例所提供的电池总成，取消下箱体底面结构，液冷板与下箱体直接连接，在电池单体发生热失控时，电池模组的热量会迅速通过液冷板传递给下箱体，有效延缓热失控；下箱体受到的力也可以快速传递给液冷板，液冷板内部的冷却液可以针对汽车行驶过程中电池总成的振动起到阻尼减振的作用，延缓振动频率，增强系统抵抗振动的能力；边框可以保护液冷板，防止液冷板被压溃，保证电池总成的侧碰性能，提升安全性能。液冷板与下箱体的第 一凸台、第二凸台相互固定连接完成电池总成的密封，第一凸台、第二凸台可以有效承载电池模组的部分重量，将电池模组的重量分散至多个结构，降低液冷板局部受力的压力，减轻液冷板承载的电池模组重量，避免应力过度集中，提升电池总成整体的承载强度。纵梁和横梁之间形成多个独立空间，每个独立空间均可放置单独的电池模组，不同空间区域之间的纵梁和横梁可以有效阻隔电池模组的热量蔓延、高压拉弧。液冷板与下箱体的一体化设计，可以提升液冷板的寿命，减小长时间工况使用冷却液对液冷板冲击造成的疲劳破坏。电动汽车的电池总成空间布置简单，实现高度集成化设计，提升空间利用率和结构强度，安全性能高、冷却效果好。
对于所属领域的普通技术人员来说，能够进行多种变化、重新调整和替代而不会脱离本申请的保护范围。这里无需也无法对所有的实施方式予以穷举。

Claims (15)

  1. 一种电池总成，包括：
    下箱体(1)，所述下箱体(1)包括：
    边框(11)，所述边框(11)包括前梁(111)、后梁(112)和两面侧边梁(113)，每个所述侧边梁(113)的两端分别固定连接于所述前梁(111)和所述后梁(112)；
    至少一个纵梁(12)，每个所述纵梁(12)的两端分别固定连接于所述前梁(111)和所述后梁(112)，每个所述纵梁(12)的底面设置有多个第一凸台(121)，多个所述第一凸台(121)沿所述纵梁(12)的长度方向间隔均匀设置；以及
    多个横梁(13)，多个所述横梁(13)相互平行设置，每个所述横梁(13)的两端分别固定连接两面所述侧边梁(113)，每个所述纵梁(12)和多个所述横梁(13)交叉固定连接，每个所述横梁(13)的底面设置有多个第二凸台(131)；
    液冷板(2)，所述液冷板(2)包括贯穿的多个第一安装口(21)和多个第二安装口(22)，所述液冷板(2)固定连接于所述下箱体(1)，每个所述第一安装口(21)卡接一个所述第一凸台(121)，每个所述第二安装口(22)卡接一个所述第二凸台(131)，所述液冷板(2)的上表面能够固定连接电池模组，所述液冷板(2)被配置为冷却所述电池模组。
  2. 根据权利要求1所述的电池总成，其中，所述液冷板(2)包括：
    上板(23)，所述上板(23)的上表面抵接所述纵梁(12)的底面和所述横梁(13)的下表面；
    下板(24)，所述下板(24)设置有多条相互连通的流道(241)，所述下板(24)贴合于所述上板(23)的下表面，并封闭所述流道(241)，所述多条流道(241)包括出水端(2411)和入水端(2412)；
    出水管接头(25)，所述出水管接头(25)固定连接于所述上板(23)，所述出水管接头(25)连通于所述出水端(2411)；以及
    入水管接头(26)，所述入水管接头(26)固定连接于所述上板(23)，所述入水管接头(26)连通于所述入水端(2412)。
  3. 根据权利要求2所述的电池总成，其中，每个所述第二凸台(131)为阶梯状凸台，包括凸台一(1311)和凸台二(1312)，每个所述凸台一(1311)固定连接于一个所述凸台二(1312)，每个所述凸台二(1312)固定连接于一个所述横梁(13)，每个所述凸台二(1312)的宽度大于一个所述横梁(13)的宽度。
  4. 根据权利要求3所述的电池总成，其中，每个所述凸台二(1312)卡接所述上板(23)的一个所述第二安装口(22)，每个所述凸台一(1311)卡接所述下板(24)的一个所述第二安装口(22)。
  5. 根据权利要求2所述的电池总成，其中，所述前梁(111)包括两个水管安装口(1111)，所述出水管接头(25)和所述入水管接头(26)分别包括连接凸台(251)，每个所述连接凸台(251)卡接于一个所述水管安装口(1111)。
  6. 根据权利要求2所述的电池总成，其中，所述液冷板(2)还包括：
    多条绝缘条(27)，多条所述绝缘条(27)固定连接于所述上板(23)的上表面，多条所述绝缘条(27)相互平行且间隔均匀设置；
    导热结构，所述导热结构设置于所述上板(23)的上表面，所述导热结构抵接所述电池模组；以及
    多个固定柱(28)，多个所述固定柱(28)固定连接于所述上板(23)，多个所述固定柱(28)被配置为固定外部设备。
  7. 根据权利要求2所述的电池总成，其中，多条所述流道(241)包括：
    三条总流道(2413)，三条所述总流道(2413)并联设置，每条所述总流道(2413)包括一个入水口和一个出水口，三个所述入水口分别连通所述入水管接头(26)，三个所述出水口分别连通所述出水管接头(25)；每条所述总流道(2413)设有四条分流道(2414)，四条所述分流道(2414)并联设置；
    扰流结构，所述扰流结构被配置为调节三条所述总流道(2413)的流量分配。
  8. 根据权利要求7所述的电池总成，其中，所述扰流结构包括扰流环(2415)和扰流道(2416)。
  9. 根据权利要求1所述的电池总成，其中，每个所述第二凸台(131)为阶梯状凸台，包括凸台一(1311)和凸台二(1312)，每个所述凸台一(1311)固定连接于一个所述凸台二(1312)，每个所述凸台二(1312)固定连接于一个所述横梁(13)，每个所述凸台二(1312)的宽度大于一个所述横梁(13)的宽度。
  10. 根据权利要求2所述的电池总成，其中，所述液冷板(2)还包括：
    多条绝缘条(27)，多条所述绝缘条(27)固定连接于所述上板(23)的上表面，多条所述绝缘条(27)相互平行且间隔均匀设置。
  11. 根据权利要求2所述的电池总成，其中，所述液冷板(2)还包括：
    多个固定柱(28)，多个所述固定柱(28)固定连接于所述上板(23)，多个所述固定柱(28)被配置为固定外部设备。
  12. 一种电动车辆，包括权利要求1-11任一项所述的电池总成。
  13. 一种设计方法，用于设计权利要求1-11任一项所述的液冷板(2)，包括以下步骤：
    步骤1(S1)、在设计软件中输入电池模组的数量，设计总流道(2413)的数量；
    步骤2(S2)、在每个所述总流道(2413)中设计分流道(2414)的数量，其中，所述分流道(2414)的数量为2～5条；
    步骤3(S3)、在至少一个所述总流道(2413)中设计扰流结构；
    步骤4(S4)、采用计算流体动力学仿真，调节至少一个所述总流道(2413)的流量分配。
  14. 一种电子设备，包括：
    至少一个处理器；
    存储器，设置为存储至少一个程序，
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求13所述的设计方法。
  15. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求13所述的设计方法。
PCT/CN2021/130069 2021-06-18 2021-11-11 电池总成、电动车辆、设计方法、设备及存储介质 WO2022262182A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110678080.6 2021-06-18
CN202110678080.6A CN113422139B (zh) 2021-06-18 2021-06-18 一种电池总成、电动车辆及设计方法

Publications (1)

Publication Number Publication Date
WO2022262182A1 true WO2022262182A1 (zh) 2022-12-22

Family

ID=77789117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/130069 WO2022262182A1 (zh) 2021-06-18 2021-11-11 电池总成、电动车辆、设计方法、设备及存储介质

Country Status (2)

Country Link
CN (1) CN113422139B (zh)
WO (1) WO2022262182A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117059950A (zh) * 2023-08-14 2023-11-14 浙江米皇新材股份有限公司 一种新能源自适应储能液冷板及其生产工艺
CN117313442A (zh) * 2023-12-01 2023-12-29 江苏速豹动力科技有限公司 一种电动重卡用动力电池包设计方法及动力电池包

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113422139B (zh) * 2021-06-18 2022-05-31 中国第一汽车股份有限公司 一种电池总成、电动车辆及设计方法
CN114388942A (zh) * 2021-12-01 2022-04-22 中国第一汽车股份有限公司 一种电池热管理装置、电池总成、电动车辆及设计方法
US20230282903A1 (en) * 2022-03-04 2023-09-07 Sk On Co., Ltd. Battery device
WO2024008152A1 (zh) * 2022-07-07 2024-01-11 天津市捷威动力工业有限公司 多功能集成电池箱体、电池包、电动装置及电动车辆
WO2024053949A1 (ko) * 2022-09-07 2024-03-14 주식회사 엘지에너지솔루션 열 전파 지연구조를 구비하는 배터리 팩
CN115441094B (zh) * 2022-11-08 2023-03-24 中国第一汽车股份有限公司 一种液冷板、电池总成、电动车辆及设计方法
CN116526051B (zh) * 2023-06-30 2023-09-22 天津力神电池股份有限公司 箱体结构及电池包

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206878141U (zh) * 2017-05-15 2018-01-12 苏州方林科技股份有限公司 一种新能源汽车多流道液冷散热器
CN209766500U (zh) * 2019-04-08 2019-12-10 蜂巢能源科技有限公司 安装框架、电池模组安装架、电池包和车辆
CN211879470U (zh) * 2020-05-25 2020-11-06 北京新能源汽车股份有限公司蓝谷动力系统分公司 一种电池包下箱体、电池包及电动汽车
CN212113812U (zh) * 2020-05-25 2020-12-08 北京新能源汽车股份有限公司蓝谷动力系统分公司 一种电池箱及电动汽车
CN112151910A (zh) * 2020-09-27 2020-12-29 中国第一汽车股份有限公司 一种液冷电池系统及液冷电池系统的控制方法
CN212659592U (zh) * 2020-09-08 2021-03-05 伟巴斯特车顶供暖系统（上海）有限公司 动力电池系统的冷却装置和用于车辆的动力电池系统
CN113422139A (zh) * 2021-06-18 2021-09-21 中国第一汽车股份有限公司 一种电池总成、电动车辆及设计方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108390128A (zh) * 2018-04-16 2018-08-10 西南交通大学 电池箱液冷散热结构建立方法和相应结构
CN208489245U (zh) * 2018-04-24 2019-02-12 北京新能源汽车股份有限公司 电池包
CN208797078U (zh) * 2018-10-26 2019-04-26 贵州长江汽车有限公司 一种适用于vda模组的扁平化铝框架电池包下箱体
CN109598028A (zh) * 2018-11-09 2019-04-09 东软睿驰汽车技术（沈阳）有限公司 一种液冷系统的流量调整方法和装置
CN109256511A (zh) * 2018-11-16 2019-01-22 爱驰汽车有限公司 电池包
CN209045656U (zh) * 2018-12-14 2019-06-28 蜂巢能源科技有限公司 电池包下壳体边梁和电池包下壳体
CN109817863A (zh) * 2019-03-27 2019-05-28 贵州长江汽车有限公司 一种多点贯穿约束的全铝框架电池包箱体
CN210015934U (zh) * 2019-04-11 2020-02-04 江西星盈科技有限公司 锂离子电池包结构
CN110911600A (zh) * 2019-10-28 2020-03-24 广汽蔚来新能源汽车科技有限公司 壳体及其制造方法、电池包
CN211556079U (zh) * 2020-03-26 2020-09-22 孚能科技(赣州)股份有限公司 横梁、电池系统箱和电动汽车
CN212085102U (zh) * 2020-06-03 2020-12-04 华域汽车车身零件（上海）有限公司 一种分离式水冷板的电池箱
CN111859557B (zh) * 2020-06-30 2023-10-13 淮安骏盛新能源科技有限公司 一种基于Hyperstudy和Fluent联合仿真的液冷板结构尺寸优化方法
CN112072025A (zh) * 2020-09-04 2020-12-11 东风汽车集团有限公司 抗挤压电池下箱体的集成化下底板及其制备方法
CN112201887B (zh) * 2020-09-09 2023-05-19 东风汽车集团有限公司 一种液冷管路外置的电池包冷却系统
CN112701383A (zh) * 2021-01-19 2021-04-23 中国第一汽车股份有限公司 一种电池液冷板总成、电池总成及车辆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206878141U (zh) * 2017-05-15 2018-01-12 苏州方林科技股份有限公司 一种新能源汽车多流道液冷散热器
CN209766500U (zh) * 2019-04-08 2019-12-10 蜂巢能源科技有限公司 安装框架、电池模组安装架、电池包和车辆
CN211879470U (zh) * 2020-05-25 2020-11-06 北京新能源汽车股份有限公司蓝谷动力系统分公司 一种电池包下箱体、电池包及电动汽车
CN212113812U (zh) * 2020-05-25 2020-12-08 北京新能源汽车股份有限公司蓝谷动力系统分公司 一种电池箱及电动汽车
CN212659592U (zh) * 2020-09-08 2021-03-05 伟巴斯特车顶供暖系统（上海）有限公司 动力电池系统的冷却装置和用于车辆的动力电池系统
CN112151910A (zh) * 2020-09-27 2020-12-29 中国第一汽车股份有限公司 一种液冷电池系统及液冷电池系统的控制方法
CN113422139A (zh) * 2021-06-18 2021-09-21 中国第一汽车股份有限公司 一种电池总成、电动车辆及设计方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117059950A (zh) * 2023-08-14 2023-11-14 浙江米皇新材股份有限公司 一种新能源自适应储能液冷板及其生产工艺
CN117313442A (zh) * 2023-12-01 2023-12-29 江苏速豹动力科技有限公司 一种电动重卡用动力电池包设计方法及动力电池包
CN117313442B (zh) * 2023-12-01 2024-02-23 江苏速豹动力科技有限公司 一种电动重卡用动力电池包设计方法及动力电池包

Also Published As

Publication number Publication date
CN113422139A (zh) 2021-09-21
CN113422139B (zh) 2022-05-31

Similar Documents

Publication Publication Date Title
WO2022262182A1 (zh) 电池总成、电动车辆、设计方法、设备及存储介质
US9945098B2 (en) Shovel including power storage device with housing having coolant flow path
WO2022062528A1 (zh) 液冷电池系统及液冷电池系统的控制方法
CN113036288B (zh) 一种电池箱、动力电池系统及电动车辆
CN212517314U (zh) 一种高刚性轻量化电池包结构
WO2022156400A1 (zh) 电池液冷板总成、电池总成及车辆
EP2372760B1 (en) Compact two sided cold plate support assembly with transfer tubes
US9863302B2 (en) Cooling device for under-floor device for vehicle
CN212659592U (zh) 动力电池系统的冷却装置和用于车辆的动力电池系统
KR20220163923A (ko) 배터리 모듈 어셈블리, 배터리 팩, 및 배터리를 전원으로 사용하는 장치
KR20130112117A (ko) 배터리 냉각 장치 제조 방법 및 이에 의해 제조된 배터리 냉각 장치
CN214477762U (zh) 一种液冷集成箱体
WO2023030232A1 (zh) 电池包及车辆
KR102462632B1 (ko) 배터리팩의 냉각플레이트
CN216213870U (zh) 动力电池下箱体总成、动力电池包及车辆
WO2024098684A1 (zh) 一种液冷板、电池总成、电动车辆及设计方法
CN218525664U (zh) 一种具有两层模组单元的电池包及包括其的电动装置
CN115692937A (zh) 一种液冷板、电池包及用电设备
CN111276656A (zh) 一种集成高效热管理系统的电池包下箱体组件
WO2021249272A1 (zh) 一种电池包及电动车
CN216684064U (zh) 一种应用于纯电特种车辆的冷却系统
WO2021253976A1 (zh) 车辆及其电池包
CN212810390U (zh) 一种散热装置和动力电池
CN114361690A (zh) 一种ctp构型的电池总成、电动车辆及设计方法
CN218586106U (zh) 一种液冷板、电池包及用电设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21945761

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21945761

Country of ref document: EP

Kind code of ref document: A1