CN110474015A - A kind of automatic liquid supply prevents the battery of thermal runaway - Google Patents
A kind of automatic liquid supply prevents the battery of thermal runaway Download PDFInfo
- Publication number
- CN110474015A CN110474015A CN201910796586.XA CN201910796586A CN110474015A CN 110474015 A CN110474015 A CN 110474015A CN 201910796586 A CN201910796586 A CN 201910796586A CN 110474015 A CN110474015 A CN 110474015A
- Authority
- CN
- China
- Prior art keywords
- battery
- thermal runaway
- upper cover
- fluid infusion
- liquid supply
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- 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
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
- H01M10/121—Valve regulated lead acid batteries [VRLA]
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to the batteries that a kind of automatic liquid supply prevents thermal runaway.The reason of Most current valve controlled sealed lead-acid accumulator pool-size declines, is all as caused by battery dehydration.It has been generally acknowledged that when dehydration is more than 15%, battery failure.Can all there be 10~30% thermal runaway failure return of goods phenomenon to summer 7~September part every year, company's lost revenue is huge.The present invention relates to the batteries that a kind of automatic liquid supply prevents thermal runaway, it is sequentially connected including single lattice, both ends are provided with busbar connector in each single lattice, fluid infusion bottle is provided among busbar connector, fluid infusion bottle includes upper cover and volumetric flask, overflow port is distributed in upper cover, and the sealing of upper cover overflow port is encapsulated using microwax.The advantages of present apparatus, is: being melted by the microwax at porous place, fluid infusion water in bottle flows out automatically carries out water supplement, adds battery internal resistance moment after water to decline, so that charger is quickly turned lamp and enter floating charge state, it avoids battery pack that thermal runaway phenomenon occurs, while extending the service life of battery pack.
Description
Technical field
The present invention relates to valve-regulated lead-acid battery technical fields, and in particular to a kind of automatic liquid supply prevents the electricity of thermal runaway
Pond.
Background technique
Battery is 1859 by Pulan special (Plante) invention, has 160 years history so far.Lead-acid accumulator is certainly
After invention, have overwhelming superiority always in electrochmical power source.It recycles, make this is because its is cheap, raw material are recyclable
With securely and reliably.In recent years, Lead-acid Battery Technology continues to develop, and product is ripe day by day.Maintenance-free battery is widely used,
It is still the vital power supply device of military, civilian traffic transportation equipment, walking-replacing tool.
The design principle of valve-regulated lead-acid battery is that the electrolyte of required deal is injected in pole plate and partition, is not dissociated
Electrolyte, the ability for absorbing oxygen is improved by negative plate humidity, battery sealed to prevent electrolyte from reducing, therefore valve control
Formula lead-acid accumulator is also known as " lean solution battery ".
The dehydration of valve control battery is to lead to the most common failure of battery malfunction.Gas-recombination efficiency is low, from battery case
Water seepage, grid corrosion and self discharge can all cause battery dehydration.If overcharge current is big, float charge voltage is excessively high, environment temperature
It is excessively high, Investigation on safety valve pressure is low etc. can accelerate battery dehydrating speed.Most current valve controlled sealed lead-acid accumulator group is held
The reason of amount decline, be all as caused by battery dehydration.It has been generally acknowledged that when dehydration is more than 15%, battery failure.Every year to the summer
Season, 7~September part can all have 10~30% thermal runaway failure return of goods phenomenon, and company's lost revenue is huge.Also as the logical of industry
Disease.
It is closely assembled design since AGM sealed lead accumulator uses barren liquor type, about 10% hole must be kept in partition
Inaccurate electrolyte enters, thus the poor thermal conductivity of inside battery, thermal capacity are small.The oxygen that anode generates when charging reaches cathode and bears
Pole lead can generate heat when reacting, and such as guide not in time, then battery temperature can be made to increase；If without reducing charging electricity in time
Pressure, then charging current will increase, and analysis oxygen speed increases, and increases battery temperature in turn.Such vicious circle is gone down, just
It can cause thermal runaway phenomenon, if it will be huge for can effectively solve thermal runaway problem social benefit.
China Patent No. are as follows: the utility model of CN207473061U provides a kind of single battery thermal runaway test device, packet
Include station, multiple single batteries, multiple fixation kits, heating component and multiple temperature acquisition components；Single battery passes through solid
Determine component to be fixed on station；Heating component is set on station and between multiple single battery, and heating component is used
In conducting heat to single battery；Temperature acquisition component is set on fixation kit and temperature acquisition component acquires and fixation kit
The real time temperature signal of adjacent single battery.The single battery thermal runaway test device that the utility model provides, can not go
The real thermal runaway problem of effective solution, practical value is high.
Summary of the invention
(1) the technical issues of solving
The purpose of the present invention is overcome the deficiencies in the prior art, and the present invention provides a kind of automatic liquid supplies to prevent thermal runaway
Battery, effective solution thermal runaway problem.
(2) technical solution
Technical solution of the present invention: a kind of automatic liquid supply prevents the battery of thermal runaway, including single lattice, busbar connector, fluid infusion bottle；
Wherein: single lattice is sequentially connected, and both ends are provided with busbar connector in each single lattice, and a fluid infusion bottle, fluid infusion are placed in busbar connector
Bottle includes upper cover and volumetric flask, and upper cover is fixedly connected with volumetric flask, and overflow port is distributed in upper cover, and the sealing of upper cover overflow port is using micro-
Crystalline substance is sealed with wax dress, and a fluid infusion bottle is placed in each single lattice of battery, and fluid infusion bottle uses the PP material of acid-resistant and heat-resistant, amount of capacity root
Determine according to different battery sizes；Fluid infusion bottle includes upper cover and volumetric flask, fluid infusion water needed for battery is loaded in volumetric flask (or
Dilute sulfuric acid), when temperature reaches close to 70 DEG C of thermal runaway in battery, the microwax at porous place melts, the fluid infusion water in bottle
Automatic outflow carries out water supplement, adds battery internal resistance moment after water to decline, so that charger is quickly turned lamp and enter floating charge state, avoid
Thermal runaway phenomenon occurs for battery pack, while extending the service life of battery pack.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of fluid infusion bottle of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1 please refers to Fig. 1-Fig. 2, and a kind of automatic liquid supply prevents the battery of thermal runaway, including busbar unit lattice,
Fluid infusion bottle, fluid infusion bottle include upper cover 1 and volumetric flask 2；Wherein: 1 overflow port of upper cover uses cellular structures, improves microwax
Leakproofness while, it is ensured that any plane of structure has enough overflow ports, once thermal runaway, which occurs, leads to overtemperature in battery, capacity
Water energy in bottle 2 all releases.
Embodiment 2, referring to Fig. 2, volumetric flask 2 size meet battery compartment space allow under conditions of, can basis
Different battery capacities designs, example: the battery design capacity of 20AH is 10ml, i.e. 0.5ml/AH.
Embodiment 3, referring to Fig. 2, the present invention including but not limited to by other sealing modes such as microwax using transfiniting
Temperature as automatic liquid supply physical switch.
Working principle:
Thermal runaway refers to: the charging for valve controlled sealed lead-acid accumulator, is that certain electric energy is input to battery
In.Energy is converted to chemical energy.The oxygen of formation flows to negative plate, weakens herein and is combined to water again.During this, release
Heat out makes battery become a heat generator.
Battery latter stage of charging electric current and temperature of the phase (or floating charge state) due under constant-voltage charge mode, making battery after charging
A kind of cumulative mutual humidification occurs for degree, and the temperature of battery steeply rises at this time, the lasting accumulation of heat, cell voltage
Begin to decline, it will a kind of uncontrolled, temperature occurs and increases, leads to battery thermal runaway, so as to cause battery case dilatancy,
Damage.
Microwax is a kind of synthetic wax, and according to different purposes fusing points at 45~90 DEG C, automatic liquid supply device utilizes microwax
The principle of low melting point is carried out to bottle sealing, is fully sealed under normal operating conditions, when thermal runaway generation occurs in battery pack
When high temperature, when the temperature of inside battery reaches 70 DEG C, microwax starts to melt, and bottleneck loses sealing, and the water in bottle flows out automatically
To fluid infusion is implemented in single lattice, the microwax of different melting points is may be selected in different battery cell case heatproof degree.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of automatic liquid supply prevents the battery of thermal runaway, including single lattice, busbar connector, fluid infusion bottle；It is characterized by: single lattice is successively
It is connected, both ends are provided with busbar connector in each single lattice, and fluid infusion bottle is provided among busbar connector, and fluid infusion bottle includes upper cover and capacity
Bottle, upper cover are fixedly connected with volumetric flask, and overflow port is distributed in upper cover, and the sealing of upper cover overflow port is encapsulated using microwax.
2. the battery that a kind of automatic liquid supply according to claim 1 prevents thermal runaway, it is characterised in that: upper cover overflow port is adopted
Use cellular structures.
3. the battery that a kind of automatic liquid supply according to claim 1 prevents thermal runaway, it is characterised in that: fluid infusion bottle is using resistance to
The PP material of sour heatproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796586.XA CN110474015A (en) | 2019-08-27 | 2019-08-27 | A kind of automatic liquid supply prevents the battery of thermal runaway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796586.XA CN110474015A (en) | 2019-08-27 | 2019-08-27 | A kind of automatic liquid supply prevents the battery of thermal runaway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110474015A true CN110474015A (en) | 2019-11-19 |
Family
ID=68512394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910796586.XA Pending CN110474015A (en) | 2019-08-27 | 2019-08-27 | A kind of automatic liquid supply prevents the battery of thermal runaway |
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| Country | Link |
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| CN (1) | CN110474015A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183026A (en) * | 1993-12-22 | 1995-07-21 | Japan Storage Battery Co Ltd | Sealed lead-acid battery |
| JP2006236905A (en) * | 2005-02-28 | 2006-09-07 | Furukawa Battery Co Ltd:The | Lead-acid battery |
| CN201146212Y (en) * | 2008-01-21 | 2008-11-05 | 浙江超威电源有限公司 | Lead acid accumulator |
| CN201773875U (en) * | 2010-07-02 | 2011-03-23 | 超威电源有限公司 | Battery cover with electrolyte replenishing structure |
| CN202236979U (en) * | 2011-09-28 | 2012-05-30 | 陕西坚瑞消防股份有限公司 | Portable fire extinguishing apparatus |
| CN104409794A (en) * | 2014-11-19 | 2015-03-11 | 奇瑞汽车股份有限公司 | Temperature management device of power battery pack of electric automobile, as well as manufacture method and application method thereof |
| JP6409093B1 (en) * | 2017-04-26 | 2018-10-17 | 張乃文 | Lead-acid battery packaging method and structure thereof |
-
2019
- 2019-08-27 CN CN201910796586.XA patent/CN110474015A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183026A (en) * | 1993-12-22 | 1995-07-21 | Japan Storage Battery Co Ltd | Sealed lead-acid battery |
| JP2006236905A (en) * | 2005-02-28 | 2006-09-07 | Furukawa Battery Co Ltd:The | Lead-acid battery |
| CN201146212Y (en) * | 2008-01-21 | 2008-11-05 | 浙江超威电源有限公司 | Lead acid accumulator |
| CN201773875U (en) * | 2010-07-02 | 2011-03-23 | 超威电源有限公司 | Battery cover with electrolyte replenishing structure |
| CN202236979U (en) * | 2011-09-28 | 2012-05-30 | 陕西坚瑞消防股份有限公司 | Portable fire extinguishing apparatus |
| CN104409794A (en) * | 2014-11-19 | 2015-03-11 | 奇瑞汽车股份有限公司 | Temperature management device of power battery pack of electric automobile, as well as manufacture method and application method thereof |
| JP6409093B1 (en) * | 2017-04-26 | 2018-10-17 | 張乃文 | Lead-acid battery packaging method and structure thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191119 |