CN110379970B - Deep sea low-temperature inverse control type ocean observation battery cabin - Google Patents

Deep sea low-temperature inverse control type ocean observation battery cabin Download PDF

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CN110379970B
CN110379970B CN201910684264.6A CN201910684264A CN110379970B CN 110379970 B CN110379970 B CN 110379970B CN 201910684264 A CN201910684264 A CN 201910684264A CN 110379970 B CN110379970 B CN 110379970B
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temperature
battery
deep sea
wall
battery compartment
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CN110379970A (en
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熊学军
冒家友
王红
胡筱敏
闫枫
陈亮
于龙
孙佳
云升军
郭延良
杨光兵
宫庆龙
回贞立
徐智优
吴凡
滕建斌
高皜
徐珂
郑鹏
李阳
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Qingdao Daxiong Ocean Technology Co ltd
China National Offshore Oil Corp CNOOC
Harbin Engineering University
Shandong University of Science and Technology
First Institute of Oceanography MNR
CNOOC Deepwater Development Ltd
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Qingdao Daxiong Ocean Technology Co ltd
China National Offshore Oil Corp CNOOC
Harbin Engineering University
Shandong University of Science and Technology
First Institute of Oceanography MNR
CNOOC Deepwater Development Ltd
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Priority to PCT/CN2020/104522 priority patent/WO2021018045A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • 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
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • 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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Primary Cells (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Hybrid Cells (AREA)

Abstract

The invention belongs to the field of ocean observation deep sea low-temperature power supply, and particularly relates to a deep sea low-temperature inverse control type ocean observation battery cabin. Based on the deep sea low temperature observation environment and the characteristic that the discharge capacity of the battery is reduced along with the temperature reduction, the heat which is the side effect is collected, protected and accumulated by utilizing the characteristics of heat generation in the battery discharge process and periodicity in the observation process through the design of temperature insulation, heat preservation and temperature accumulation, and the method is applied to the deep sea low temperature reverse maintenance of the working discharge temperature of the battery by combining the optimal discharge period control of specific observation; in order to keep stability, an initial temperature control heating cabin is arranged; in order to ensure safety, a limit temperature control and high-pressure through hole is arranged; meanwhile, the deep sea compression resisting technology, the watertight technology and the full-filling shaking fatigue resisting technology are integrated. The conventional battery pack is enabled to work at the near-optimal discharge temperature under the low-temperature condition of the deep sea, the discharge capacity is improved by 30%, the deep sea observation efficiency is remarkably improved, the observation cost is reduced, and the deep sea strategy of the deep sea map is guaranteed.

Description

Deep sea low-temperature inverse control type ocean observation battery cabin
Technical Field
The invention belongs to the field of power supply for marine observation in deep sea low-temperature special environments, and particularly relates to a deep sea low-temperature inverse control type marine observation battery cabin.
Background
In recent years, with the dramatic increase of population and deterioration of environment in the world, onshore resources are gradually deficient, and the research on deep sea is more and more focused by various circles. In order to better develop, utilize and protect ocean resources and energy, various ocean parameter data with large range and accuracy need to be acquired, and a large amount of seabed-based and submerged buoy deep sea observation needs to be carried out, so that energy power can not be provided by a battery.
The temperature change of the seawater is generally between-2 ℃ and 30 ℃. Direct observation shows that the temperature of ocean water in the world generally decreases along with the increase of the depth, and in low-latitude sea areas, 350m has the largest shallow decreasing rate, and the characteristic temperature of 350m is 12 ℃; the reduction rate of 350-2000m is larger, and the characteristic temperature of 2000m is 2 ℃; the reduction rate of 2000-4000m is relatively slow, and the characteristic temperature of 4000m is 1 ℃; 4000m remain substantially unchanged at depth. In other words, the water temperature is basically below 10 ℃ when the depth is 500 m; 1000m deep, the water temperature is basically below 5 ℃; 2000m deep, the water temperature is basically below 2 ℃.
At present, under the condition of low temperature such as deep sea, the discharge capacity of the available ocean observation battery can only reach 50 percent or even lower, and the individual battery can reach 70 percent and is not easy to adopt due to safety. Because the batteries are difficult to replace in deep sea ocean observation, the battery cabin capable of ensuring the discharge capacity of the conventional batteries under the low-temperature condition is urgently needed to be invented, and the normal operation of ocean observation is ensured.
Disclosure of Invention
The invention aims to improve the discharge capacity of a conventional battery under the condition of deep sea low temperature, and provides a deep sea low temperature inverse control type ocean observation battery cabin. Based on deep understanding of deep sea observation environment and battery discharge characteristics, the invention collects, protects and accumulates heat which is a side effect by utilizing a heat generation phenomenon in a battery working discharge process, combines with optimal discharge period control of specific observation, utilizes reverse maintenance of battery working discharge temperature under a deep sea low temperature condition, increases initial temperature control, high-voltage through holes and limit temperature control, improves the discharge capacity of a conventional battery under the deep sea low temperature condition by 30 percent, obviously improves the deep sea observation efficiency and reduces the observation cost. The main inventive content comprises:
1) design of gold barrel of battery compartment physique: in consideration of the convenience of accommodating batteries and the compatibility of batteries of various types, the battery compartment body is in a cylindrical shape, the height of the battery compartment body is h, the diameter of the battery compartment body is d, and the wall thickness of the battery compartment body is delta; from the standpoint of control of capacity and buoyancy, a larger d and a smaller δ are required; but in order to resist high pressure in deep sea, the smaller d is better, and the larger delta is better; to find the optimum solution, the result of the calculation comparison is selected
Figure BDA0002145708870000011
I.e., the aspect ratio satisfies the golden section ratio.
2) The double-deck heat insulation design of battery compartment wall body (first layer heat preservation control: thermal insulation): the outer wall of the double-layer wall body of the battery compartment is used for resisting water pressure, in order to deal with deep sea high pressure and reduce the weight of the wall body, the outer wall is made of a titanium material with high and low temperature resistance, seawater corrosion resistance, high strength, low density and no magnetism, and a titanium rod hollowing process is adopted; the inner wall is used for heat insulation, in order to effectively insulate heat and reduce the weight of the cabin body, the inner wall is made of transparent polyurethane material which is resistant to high and low temperatures, free of pollution, non-toxic, odorless and stable in performance, and a thin cylinder integrated forming process is adopted.
3) The heat exchange self-restraint design of the battery compartment wall body (second layer heat preservation control: heat exchange self-suppression): in order to cut off the heat exchange between the inside and the outside of the battery compartment, the inner side of the outer wall and the two sides of the inner wall are required to be subjected to smooth treatment except for the increased heat insulation inner wall layer, and then the inner side of the outer wall is subjected to surface silver plating process treatment to form an inward reflection mirror surface so as to realize the self-inhibition of heat radiation; the inner wall and the outer wall are vacuumized, and the heat convection and conduction of air are reduced.
4) The design of full filling of polyurethane self-insulation in the battery pack gap in the battery compartment (third layer insulation control: self-heat preservation of the battery pack): the battery pack is wrapped by a polyurethane film and placed in the battery compartment, and a foaming gun is fully filled with a polyurethane foaming agent between the battery pack and the polyurethane film, so that the battery pack is self-heat-insulated and plays a role in fixing.
5) And (3) controlling the optimal discharge period of the thermal management system in the battery compartment: according to deep sea observation conditions and periodic discharge characteristics of the battery pack, the discharge period control which meets the conditions that the temperature is 15-20 ℃ before discharge and the temperature is 20-37 ℃ after discharge is the optimal discharge period control is realized; for deep sea observation, an observation period T and a discharge period tau (T is more than or equal to tau) are mainly involved, observation in which multiple or single tau are uniformly distributed in T is average observation, observation in which multiple or single tau are concentrated in T for a period of time is sampling observation, and under the condition that the discharge characteristic of a battery pack is stable, the optimal discharge period control is realized by adjusting the relation between T and tau.
6) And (3) limit management control of a thermal management system in the battery compartment: according to the safety characteristics of a battery and the temperature resistance characteristics of all components of the battery compartment observed in deep sea, setting the thermal limit temperature in the battery compartment to be 50 ℃; the limit temperature stopping device of the thermal management system in the battery compartment is designed and manufactured, is installed in a power supply circuit of the battery pack, and automatically disconnects the circuit when the temperature in the battery compartment exceeds 50 ℃ to stop the work of the battery.
7) The design of the outward pressure through hole for the safety control of the battery compartment is as follows: the pressure inside the battery compartment can be changed due to temperature change, gas can also be generated, particularly, in order to prevent unexpected high pressure, a pressure through hole is arranged at the bottom of the battery compartment, and when the pressure in the compartment reaches 60MPa and is greater than the pressure outside the compartment, the pressure through hole is opened to release the pressure outside the compartment.
8) Designing a temperature increasing cabin for initial temperature control of a thermal management system in a battery cabin: the deep sea low temperature not only greatly reduces the discharge capacity of a plurality of batteries, but also makes the plurality of batteries difficult to start particularly at the rear section of the working period, on the basis of the design of heat insulation and heat preservation of the battery compartment, a temperature increasing compartment is arranged at the bottom of the battery compartment, a battery circuit is connected for control, before the batteries discharge, if the temperature in the compartment is lower than 15 ℃, the temperature increasing compartment automatically starts to increase the temperature, and automatically stops after the temperature is increased to 15 ℃, so as to ensure the initial start of the batteries, and then the temperature is maintained by the heat generation in the battery discharging process.
The invention has the following beneficial effects:
(1) the design of the gold round barrel of the battery compartment body enables the battery compartment body to have the convenience of battery accommodation and the compatibility of batteries of various types, and the optimized diameter-height ratio is realized in the aspects of capacity control, buoyancy control and pressure resistance control.
(2) The outer wall of the battery compartment is provided with a hollowed titanium rod, so that the battery compartment can resist high water pressure and seawater corrosion, and is light in weight and high in strength; the inner wall adopts a transparent polyurethane thin plate, and the paint can resist high and low temperature, is pollution-free, nontoxic and tasteless and has stable performance.
(3) The inner side of the outer wall and both sides of the inner wall of the battery compartment are subjected to smoothing treatment, and then the inner side of the outer wall is subjected to surface silver plating process treatment, so that the self-inhibition of the heat radiation of the battery compartment for radiating outwards is realized; the vacuum between the inner and outer walls can impede the convection and conduction of heat from the air.
(4) Polyurethane is fully filled in the gap in the battery compartment, so that the battery compartment plays a role in fixing while realizing self-heat preservation and easy taking out, and is particularly important in ocean observation.
(5) The heat management system in the ocean observation battery compartment is initiated, and the functions of optimal discharge period control, limit temperature cut-off control, high-pressure release control and initial low-temperature rise can be realized.
(6) The battery heat generation in the observation process is collected, protected, accumulated and utilized, the discharge capacity of the conventional battery under the deep sea low-temperature condition is improved by 30%, and meanwhile, the influence on the marine environment is reduced, so that the battery has multiple purposes.
The invention has prominent substantive features and remarkable progress:
(1) the invention solves the technical problem that people are eagerly to solve but can not successfully observe the weak discharge capacity of the conventional battery at low temperature in deep sea all the time.
(2) The invention changes the custom thought of the technicians in the field for timely releasing the generated heat of the battery, realizes the reverse control of the discharge temperature of the battery observed in the ocean under the deep sea low-temperature condition by reflecting the collection, protection, accumulation and utilization of the battery, and improves the discharge capacity of the conventional battery under the deep sea low-temperature condition by 30 percent.
(3) In order to manufacture the deep-sea low-temperature inverse control type ocean observation battery cabin, the invention combines the existing deep-sea pressure resisting technology, watertight technology, anti-fatigue technology and the like, thereby obtaining satisfactory technical effects.
(4) The invention is commercially successful, and the deep sea low-temperature inverse control type ocean observation battery cabin produced by the big bear ocean science and technology limited company in batches has short supply and short demand.
Drawings
The invention is further illustrated with reference to the figures and examples.
Fig. 1 is a front view and a cross-sectional structure of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is an isometric view of the present invention.
In the above figures: the battery compartment comprises a battery compartment cover 1, a watertight plug-in structure 2, a flange screw 3, an axial sealing groove 4 (for placing an O-shaped ring), a radial sealing groove 5 (for placing the O-shaped ring), an outer wall 6 of a double-layer wall body of the battery compartment, an inner wall 7 of the double-layer wall body of the battery compartment, a warming compartment 8 and a pressure through hole structure 9.
Detailed Description
According to the invention, the specific construction operation for manufacturing the deep-sea low-temperature inverse control type ocean observation battery cabin is as follows:
1) the size of the battery compartment body is determined: according to the characteristics of the titanium material and the characteristics of the battery compartment body, the compartment body strength is calculated according to the water pressure of 7200m, and the thickness d of the outer wall is determined110 mm; according to the characteristics of the polyurethane material and the calculation of the heat penetration time course, the thickness d of the inner wall is determined23 mm; calculating the compatibility possibility of the maximum capacity in the cabin according to the conventional battery size and the battery pack integrated size, and determining the diameter d of the internal cabin3150 mm; the outer diameter d of the battery compartment body is 2d1+2d2+d3＝176mm，
Figure BDA0002145708870000041
Determining the flat bottom of the cabin, thickening according to 150% of the thickness of the side outer wall, and determining the thickness h of the bottom outer wall115 mm; determining the cover to be flange type, the outer diameter of the cover is 20mm larger than that of the cabin body, the cover is used for connecting a flange welded on the cabin body through bolts, and the thickness h of the edge of the outer wall of the cover2120mm, centre thickness h of the outer wall of the hatch2230mm, hatch cover inner wall thickness h 33 mm; the heating cabin is arranged at the bottom layer of the inner cabin, and the thickness is determined to be h410 mm; then the height h of the inner empty cabin5＝h-h1-h22-2h3-h4＝223.77mm。
2) Manufacturing the outer wall of the battery compartment: selecting TC4(Ti-6AI-4V) titanium rod, hollowing to side wall thickness d110mm, bottom wall thickness h115mm cabin barrel; cutting the same titanium rod, and lathing the edge thickness h2120mm, edge width d110mm, convex thickness h22The method comprises the following steps that (1) a 30mm cabin cover flange is adopted, deep sea watertight is achieved in two modes of axial press-fit sealing and radial press-fit sealing of O-shaped rings, and grooves for placing the O-shaped rings need to be turned in the middle of an edge area and in the middle of the side face of a convex portion respectively; inner side of the cabin barrel and the cabin coverAnd carrying out smoothing treatment and surface silver plating process treatment.
3) Manufacturing the inner wall of the battery compartment: thickness d is selected2The edge region was coated with a polyurethane adhesive, and the polyurethane sheet was attached to the bottom wall, side wall and lid flange inside the battery compartment to form a thin polyurethane tube.
4) Vacuum treatment between the inner wall and the outer wall of the battery compartment: the inner wall and the outer wall are vacuumized, and the heat convection and conduction of air are reduced.
5) Manufacturing a heating cabin of the thermal management system in the battery cabin: determining the thickness of the heating cabin as h4When the current passes through the thermistor, the thermistor with PTC positive temperature coefficient can generate heat, the heat of the electric furnace is transferred to the thermistor, when the temperature is increased to 15 ℃, the resistor rises sharply until the power supply is disconnected, and then the electric furnace is subjected to heat preservation by the heat preservation cotton to slowly release heat; the temperature-increasing cabin is arranged on the inner wall of the bottom layer of the inner cabin.
6) And (3) full filling treatment in the battery compartment: the battery pack is wrapped by a polyurethane film and placed in the battery compartment, and a foaming gun is fully filled with a polyurethane foaming agent between the battery pack and the polyurethane film, so that the battery pack is self-heat-insulated and plays a role in fixing.
7) Setting the optimal discharge period of the battery pack through an observation instrument: according to deep sea observation conditions and periodic discharge characteristics of the battery pack, the discharge period control which meets the conditions that the temperature is 15-20 ℃ before discharge and the temperature is 20-30 ℃ after discharge is the optimal discharge period control is realized; for deep sea observation, an observation period T and a discharge period tau (T is more than or equal to tau) are mainly involved, observation in which multiple tau or single tau are uniformly distributed in T is average observation, observation in which multiple tau or single tau is concentrated in T for a period of time is sampling observation, and under the condition that the discharge characteristic of a battery pack is stable, the relation between T and tau is set through an observation instrument, so that the optimal discharge period control is realized.
8) Manufacturing a limit temperature stopping device of a thermal management system in the battery compartment: according to the safety characteristics of a battery and the temperature resistance characteristics of all components of the battery compartment observed in deep sea, setting the thermal limit temperature in the battery compartment to be 50 ℃; the PTC thermistor switch is connected to a battery circuit in the battery compartment and is arranged at the center of the battery pack, and when the temperature transmitted to the battery pack exceeds 50 ℃, the circuit is automatically disconnected, so that the battery is stopped from working.
9) The battery compartment safety control is provided with an outward pressure hole: and a pressure through hole is formed in the bottom of the battery cabin, and when the pressure in the cabin reaches 60MPa and is greater than the pressure outside the cabin, the pressure through hole is opened to release the pressure outside the cabin.
10) The battery compartment power output penetrates the setting of the compartment: and a watertight cabin penetrating piece is arranged on the cabin cover flange, so that the external connection and power supply of the battery cabin are realized.

Claims (5)

1. A deep sea low-temperature inverse control type ocean observation battery compartment is characterized in that a conventional battery pack can work at a temperature close to the optimal discharge temperature under the condition of deep sea low temperature, and comprises a cylindrical body with a golden section ratio, a wall body with a double-layer heat insulation design, wall body heat exchange self-inhibition treatment, full-filling self-insulation treatment and self-heating limit management control, and an outward pressure through hole and an initial temperature control heating compartment are arranged;
the cylindrical body with golden section ratio is formed by considering the convenience of battery accommodation and the compatibility of batteries of various types, and the battery compartment body is cylindrical and has a height of h, a diameter of d and a wall thickness of h
Figure 352651DEST_PATH_IMAGE001
(ii) a From the viewpoint of the control of the volume and buoyancy, a larger d and a smaller d are required
Figure 885264DEST_PATH_IMAGE001
(ii) a But, in order to resist high pressure in the deep sea, the smaller d is the better,
Figure 380703DEST_PATH_IMAGE001
the larger the better; to find the optimum solution, the result of the calculation comparison is selected
Figure 315161DEST_PATH_IMAGE002
I.e. the aspect ratio satisfies goldA division ratio;
the wall body heat exchange self-inhibition treatment is to cut off the heat exchange between the inside and the outside of the battery compartment, smooth treatment is carried out on the inner side of the outer wall and the two sides of the inner wall except for the increase of the heat insulation inner wall layer, and then surface silver plating process treatment is carried out on the inner side of the outer wall to form an inward reflection mirror surface so as to realize the self-inhibition of heat radiation; the inner wall and the outer wall are vacuumized, so that the thermal convection and conduction of air are reduced;
the self-heating limit management control is to set the thermal limit temperature in the battery compartment to be 50 ℃ according to the safety characteristics of the battery and the temperature resistance characteristics of all components of the battery compartment observed in deep sea; the limit temperature stopping device of the thermal management system in the battery compartment is designed and manufactured, is installed in a power supply circuit of the battery pack, and automatically disconnects the circuit when the temperature in the battery compartment exceeds 50 ℃ to stop the work of the battery.
2. The deep-sea low-temperature inverse control type ocean observation battery compartment according to claim 1, wherein the wall body is of a double-layer heat insulation design, and is characterized in that: the outer wall of the double-layer wall body of the battery compartment is used for resisting water pressure, in order to deal with deep sea high pressure and reduce the weight of the wall body, the outer wall is made of a titanium material with high and low temperature resistance, seawater corrosion resistance, high strength, low density and no magnetism, and a titanium rod hollowing process is adopted; the inner wall is used for heat insulation, in order to effectively insulate heat and reduce the weight of the cabin body, the inner wall is made of transparent polyurethane material which is resistant to high and low temperatures, free of pollution, non-toxic, odorless and stable in performance, and a thin cylinder integrated forming process is adopted.
3. The deep-sea low-temperature inverse control type ocean observation battery compartment according to claim 1, wherein the gap between the internal battery packs is fully filled with polyurethane, and the deep-sea low-temperature inverse control type ocean observation battery compartment is characterized in that: the battery pack is wrapped by a polyurethane film and placed in the battery compartment, and a foaming gun is fully filled with a polyurethane foaming agent between the battery pack and the polyurethane film, so that the battery pack is self-heat-insulated and plays a role in fixing.
4. The deep-sea low-temperature inverse control type ocean observation battery compartment of claim 1 is provided with an outward pressure through hole, and is characterized in that: the pressure inside the battery compartment can be changed due to temperature change, gas can also be generated, in order to prevent unexpected high pressure, the bottom of the battery compartment is provided with a pressure through hole, and when the pressure in the compartment reaches 60MPa and is greater than the pressure outside the compartment, the pressure through hole is opened to release the pressure outside the compartment.
5. The deep-sea low-temperature inverse control type ocean observation battery compartment of claim 1 is provided with a temperature increasing compartment, and is characterized in that: the deep sea low temperature not only greatly reduces the discharge capacity of a plurality of batteries, but also makes the starting of the batteries difficult in the later stage of the working period, on the basis of the design of heat insulation and heat preservation of the battery compartment, a temperature increasing compartment is arranged at the bottom of the battery compartment and is connected with the circuit control of the batteries, before the batteries are discharged, if the temperature in the compartment is lower than 15 ℃, the temperature increasing compartment automatically starts to increase the temperature, and the temperature is automatically stopped after the temperature is increased to 15 ℃, so that the initial starting of the batteries is ensured, and then the temperature is maintained by the heat generation in the battery discharging process.
CN201910684264.6A 2019-07-26 2019-07-26 Deep sea low-temperature inverse control type ocean observation battery cabin Active CN110379970B (en)

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CN201910684264.6A CN110379970B (en) 2019-07-26 2019-07-26 Deep sea low-temperature inverse control type ocean observation battery cabin
PCT/CN2020/104522 WO2021018045A1 (en) 2019-07-26 2020-07-24 Deep-sea low-temperature inverse-control-type ocean observation battery compartment and deep-sea ocean observation battery compartment

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