CN110311180A - Lithium-ion battery electrolytes circulation and purification closed-circuit system - Google Patents
Lithium-ion battery electrolytes circulation and purification closed-circuit system Download PDFInfo
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- CN110311180A CN110311180A CN201910745425.8A CN201910745425A CN110311180A CN 110311180 A CN110311180 A CN 110311180A CN 201910745425 A CN201910745425 A CN 201910745425A CN 110311180 A CN110311180 A CN 110311180A
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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
- H01M10/4214—Arrangements for moving electrodes or electrolyte
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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
- H01M10/4242—Regeneration of electrolyte or reactants
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Manufacturing & Machinery (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
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Abstract
The present invention provides a kind of electrolyte of lithium ion battery circulations and purification closed-circuit system, battery case is arranged in lithium ion battery, battery case intracorporal spaced multiple negative plates and multiple positive plates, partition and setting between adjacent negative plate and positive plate is in the intracorporal electrolyte of battery case, electrolyte circulation is provided with monitoring module with purification closed-circuit system simultaneously, heat exchange module, component regulates and controls module, drive module and management control module, monitoring module, heat exchange module, component regulation module and drive module are connected to battery case inside, and monitoring module, heat exchange module, component regulation module and drive module are electrically connected with the management control module respectively；The present invention has the ingredient of real time monitoring battery electrolyte inside, carries out the function of active adjusting, while also having the function of monitoring electrolyte temperature and keeping its stable.
Description
Technical field
The present invention relates to technical field of lithium ion, in particular to the electrolyte circulation of a kind of lithium ion battery and purification
Closed-circuit system.
Background technique
Energy density is high, output voltage is high, self-discharge rate is low, long service life, memoryless effect because having for lithium ion battery
It should be widely used in the fields such as Mobile energy storage, electric vehicle, large-scale power grid energy storage with environmental-friendly equal excellent characteristics.
In the prior art, a large amount of low capacity lithium ion battery string is used applied to the battery overwhelming majority in large-scale power grid energy-accumulating power station
It composes in parallel, high requirement is proposed to the consistency of each lithium-ion battery monomer in battery pile, also leads to energy-accumulating power station
Battery management system it is sufficiently complex so that the high construction cost of energy-accumulating power station, hinders the quick of energy-storage battery market
Development.
From the lead-acid battery epoch, the stationary cell structure of super large monomer capacity is most suitably adapted for the one of extensive energy storage
Kind battery structure design, is limited to lithium ion battery production process to the high request of operating environment and battery security, super large monomer
The lithium ion battery of capacity fails to emerge always.In addition, for vast capacity lithium-ion battery monomer, the safety of system with
Stability is vital.A kind of vast capacity energy storage with monitoring module is proposed in the patent No. 201910120637.7
With lithium ion battery, a kind of board-like positive plate of large size and negative plate are disclosed, and there is battery status monitoring module, so that
The energy storage lithium ion battery of the vast capacity of safety.
In cyclic process, lithium-ion battery electrolytes change at branch, such as electrolyte LiPF6Content decline, H2O、
A series of harmful substance contents such as HF and free groups increase, these variations can accelerate the hair of inside lithium ion cell side reaction
It is raw, electrode material structure is damaged, to accelerate the aging of battery.And the vast capacity energy storage lithium ion battery of above-mentioned patent,
It is only capable of monitoring in real time by state of the monitoring module to battery operation, can not easily carry out in battery life cycle management
The update of electrolyte improves the service life of battery.
Summary of the invention
The present invention is based on the designs of vast capacity energy storage lithium ion battery, provide a kind of electrolyte of lithium ion battery
Circulation has the ingredient of real time monitoring battery electrolyte inside, carries out the function of active adjusting with purification closed-circuit system, while also having
The function of having monitoring electrolyte temperature and keep its stable.
In order to reach said effect, the lithium of the electrolyte circulation and purification closed-circuit system of lithium ion battery provided by the invention
Ion battery is provided with battery case, positioned at battery case intracorporal spaced multiple negative plates and multiple positive plates, is located at
Partition and setting between the adjacent negative plate and positive plate is in the intracorporal electrolyte of the battery case, the electrolyte
Circulation is provided with monitoring module, heat exchange module, component regulation module, drive module and management control mould with purification closed-circuit system
Block, the monitoring module, the heat exchange module, the component regulation module and the drive module with the battery case
Inside connection, and the monitoring module, the heat exchange module, the component regulation module and the drive module respectively with institute
State management control module electrical connection；
The monitoring module is used to detect the temperature of electrolyte and the component of electrolyte is constituted, and the heat exchange module is used for
The temperature of electrolyte is adjusted and keeps, the component regulation module is used to remove the objectionable impurities in electrolyte, maintains electrolyte
In all kinds of ions concentration, the drive module for drive electrolyte the battery case and the electrolyte circulation with
It is flowed between purification closed-circuit system, the management control module is used to receive the information that the monitoring module provides, analysis assessment
Current electrolyte situation, and the heat exchange module, component regulation module and institute are controlled according to the electrolyte situation
State drive module.
Further, the monitoring module, the heat exchange module, component regulation module and the drive module are logical
It crosses a connecting line to be sequentially communicated, the head end of the connecting line is connected to inside the battery case with tail end.
Further, monitoring probe is provided in the monitoring module, the monitoring probe is located in the connecting line,
The monitoring module includes reference electrode, temperature monitoring unit, HF concentration monitor unit, ion concentration monitoring unit, H2O concentration
Monitoring unit and number of free radical monitoring unit it is one or more.
Further, be provided with heat exchanger and resistance wire in the heat exchange module, the both ends of the heat exchanger with
The connecting line connection, the resistance wire couple setting with the heat exchanger.
Further, alkalescent adsorption column, active molecular sieve tower and high-precision is provided in the component regulation module to mix
It is connected to the one or more of reaction kettle, and with the connecting line.
Further, the drive module is a liquid pump, and the liquid pump is arranged on the connecting line.
Further, a liquid exchange opening is additionally provided on the connecting line, the liquid exchange opening is for replacing whole system
Interior electrolyte is provided with a valve in the liquid exchange opening.
Above scheme of the invention have it is following the utility model has the advantages that
Lithium ion battery of the invention electrolyte circulation with purification closed-circuit system, realize vast capacity energy storage lithium from
The active maintenance of sub- battery electrolyte solves current lithium ion battery longevity caused by electrolyte environmental degradation in cyclic process
The problem of life decaying and electrolyte can not update；The Temperature Distribution feelings of vast capacity energy storage lithium ion battery are further improved simultaneously
Condition improves the electrochemical environment consistency of lithium ion cell electrode.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
[description of symbols]
1- battery case；2- negative plate；3- positive plate；4- partition；5- electrolyte；6- negative current collector；7- anode collection
Body；8- electrolyte circulation and purification closed-circuit system；9- monitoring module；10- heat exchange module；11- component regulates and controls module；12- drives
Dynamic model block；13- management control module；14- connecting line；15- liquid exchange opening；16- valve.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.Obviously, described embodiments are some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, 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:
As shown in Figure 1, implementation 1 of the invention provides electrolyte circulation and the closed circuit system of purification of a kind of lithium ion battery
System, wherein lithium ion battery is provided with battery case 1, spaced multiple negative plates 2 in battery case 1 and multiple
Positive plate 3, partition 4 between adjacent negative plate 2 and positive plate 3 and the electrolyte 5 being arranged in battery case 1.
Meanwhile lithium ion battery is additionally provided with negative current collector 6 and plus plate current-collecting body 7, the wherein top of negative current collector 6 and negative plate 2
End connects and extends outside battery case 1, and plus plate current-collecting body 7 is connect with the top of positive plate 3 and extends battery case 1
Outside, complete lithium ion battery structure is formed.The invention also includes electrolyte circulations and purification closed-circuit system 8, are provided with prison
Module 9, heat exchange module 10, component regulation module 11, drive module 12 and management control module 13 etc. are controlled, except management control mould
Other modules outside block 13 are connected to inside battery case 1, and preferred arrangement is by connecting line 14 by monitoring module
9, heat exchange module 10, component regulation module 11 and drive module 12 are sequentially communicated, so that electrolyte 5 can be in drive module 12
Monitoring module 9, heat exchange module 10 and component regulation module 11, while monitoring module 9, heat exchange module are passed sequentially through under driving
10, component regulation module 11 and drive module 12 are electrically connected with management control module 13 respectively, are divided by management control module 13
It is other that they are controlled.Wherein, monitoring module 9 can detect 5 temperature of electrolyte flowed through and electrolyte components are constituted, and feed back
To management control module 13, management control module 13 passes through the information that monitoring module 9 provides, and current electrolyte 5 is assessed in analysis
Situation controls heat exchange module 10 according to 5 situation of electrolyte and 5 temperature of electrolyte is adjusted, and control component regulates and controls module 11
The objectionable impurities in electrolyte 5 is removed, the concentration of all kinds of ions in electrolyte 5 is maintained, to keep the temperature and electricity of electrolyte 5
Solve the stability of matter component.Thus, electrolyte circulation and the purification closed-circuit system of lithium ion battery of the invention have prison in real time
The ingredient and temperature of battery electrolyte inside 5 are controlled, and carries out the function of active adjusting.
It is provided with monitoring probe in monitoring module 9 of the invention, and is extended in connecting line 14, and monitoring module 9 is certainly
Body includes reference electrode, temperature monitoring unit, HF concentration monitor unit, ion concentration monitoring unit, H2O concentration monitor unit and
Each functional unit can be freely combined in number of free radical monitoring unit etc., provide following monitoring signal for management control module 13
It is one or more: standard electrode EMF, electrolyte real time temperature signal, HF concentration, lithium salt, H2O concentration, number of free radical
Deng enabling management control module 13 accurately to judge the situations such as 5 temperature of electrolyte and electrolyte components.Wherein, by reference electricity
The standard electrode EMF obtained in the access system of pole is compared with 2 electrode potential of negative plate and 3 electrode potential of positive plate,
The charged situation of current positive electrode and negative electrode is judged with this, realizes the function of monitoring to lithium ion cell electrode.
Heat exchanger and resistance wire, the both ends of heat exchanger and connecting line are provided in heat exchange module 10 of the invention
14 connections, electrolyte 5 will flow through heat exchanger along connecting line 14.When 5 temperature of electrolyte that monitoring module 9 monitors is higher than setting
When range, management control module 13 controls heat exchanger and starts to work, by cryogens such as coolant liquid, air in heat exchanger
The additional heat of heat exchanger electrolyte inside 5 is taken away in outer flowing, so that heat exchanger electrolyte inside 5 cools down, when temperature returns to just
Heat exchanger reduces power or stops working when normal range.And resistance wire couples setting with heat exchanger, when 5 temperature of electrolyte is low
When setting range, resistance wire is started to work, so that electrolyte 5 heats up, when temperature returns to normal range (NR), resistance wire reduces function
Rate stops working.
It is anti-that alkalescent adsorption column, active molecular sieve tower and high precision mixed are provided in component regulation module 11 of the invention
Kettle is answered, is separately connected to connecting line 14, and unrestricted choice and can be combined.Alkalescent adsorption column includes alkalescent material
Material, when electrolyte 5 passes through alkalescent adsorption column, alkalescent material can play the role of removing micro HF in electrolyte 5, wherein
HF is the harmful side product that lithium ion battery generates in cyclic process.Active molecular sieve includes high activity adsorbent material pore material
Material, can effectively adsorb the micro H that electrolyte 5 generates in cyclic process2O.High precision mixed reaction kettle include a variety of lithiums from
Electrolysis additive raw material in sub- battery, 5 compositional data of electrolyte provided by monitoring module 9, high precision mixed reaction
Kettle can be by supplementing the additive component lost in electrolyte, the component stability of maintaining lithium ion battery electrolyte 5.
Drive module 12 of the invention is a liquid pump, is arranged on connecting line 14, drives electrolyte 5 in whole system
It circulates, liquid pump may be configured as the mode for changing power by management control module 13, while itself be not shut down operation
Mode.In addition, when matching the design of multiple lithium ion batteries with purification closed-circuit system 8 using an electrolyte circulation, liquid pump
It can be set at the position that connecting line 14 crosses, may also set up several bypass lines for being correspondingly located at several batteries
On.
Wherein, management control module 13 regulates and controls module 11 and driving with monitoring module 9, heat exchange module 10, component respectively
Pass through data line between module 12 or wirelessly carries out data transmission.
As a further improvement of the present invention, a liquid exchange opening 15 is provided on connecting line 14, provide for lithium from
The channel of sub- battery and system conversion electrolyte 5, and its connected state is switched by the valve 16 that liquid exchange opening 15 is arranged.Normally
Under state, valve 16 is in close state, only when 5 ingredient of lithium ion battery electrolyte inside is unbalance and is difficult to tie up by system itself
When protecting its stability, valve 16 can be opened and electrolyte 5 is replaced, the substitute mode spare as electrolyte 5.
Embodiment 2:
It present embodiments provides one and uses the lithium ion battery job case that electrolyte recycles with purifies closed-circuit system 8.
If electroless liquid circulation and purification closed-circuit system 8, vast capacity energy storage lithium ion battery charge and discharge cycles 1000
After circle, the content of HF reaches 120ppm, H in electrolyte 52O content reaches 300ppm, and 8% capacity attenuation occurs in battery capacity.
The vast capacity energy storage lithium ion battery of electrolyte circulation with purification closed-circuit system 8 is set, and electrolyte 5 is in system
In circulate, the monitoring probe discontinuous operation of the HF concentration monitor unit in monitoring module 9 under normal circumstances, the purification threshold of HF
Value is set as 10ppm.When HF concentration is higher than threshold value in electrolyte 5, monitoring probe continuous work, HF concentration monitor unit is to pipe
13 feedback signal of control module is managed, management control module 13 issues control signal and electrolyte 5 in component regulation module 11 is flowed
It crosses alkalescent adsorption column to start to purify HF, until the concentration of HF is lower than 5ppm and when keeping 3h, management control module 13 passes through prison
Control module 9 judges that HF content is in normal condition in electrolyte 5, so that the electrolyte 5 in component regulation module 11 is without flow through weak
Alkaline adsorption column.
The vast capacity energy storage lithium ion battery with purification closed-circuit system 8 is recycled equipped with electrolyte, electrolyte 5 is in system
In circulate, the H in monitoring module 9 under normal circumstances2The monitoring probe discontinuous operation of O concentration monitor unit, H2The purification of O
Threshold value is set as 20ppm.As H in electrolyte 52When O concentration is higher than threshold value, monitoring probe continuous work, H2O concentration monitor unit
To 13 feedback signal of management control module, management control module 13 issues control signal and makes electrolyte in component regulation module 11
5, which flow through alkalescent adsorption column, starts to purify H2O, until H2The concentration of O lower than 8ppm and when keeping 3h, sentence by management control module 13
H in disconnected electrolyte 52O content is in normal condition, so that the electrolyte in component regulation module 11 is without flow through active molecular sieve.
The vast capacity energy storage lithium ion battery with purification closed-circuit system 8 is recycled equipped with electrolyte, is electrolysed after 1000 circles
HF content maintains 5ppm hereinafter, H in liquid 52O content maintains 8ppm hereinafter, battery capacity decaying is less than 2%.
Embodiment 3:
Present embodiments provide another lithium ion battery work case recycled using electrolyte with purification closed-circuit system 8
Example.
If electroless liquid circulation and purification closed-circuit system 8, vast capacity energy storage lithium ion battery charge and discharge cycles 3000
After circle, electrolyte LiPF in electrolyte 56Content drops to 1.8mol/L from original 2mol/L.
The vast capacity energy storage lithium ion battery with purification closed-circuit system 8 is recycled equipped with electrolyte, electrolyte 5 is in system
In circulate, the monitoring probe discontinuous operation of the ion concentration monitoring unit in monitoring module 9 under normal circumstances, detection electrolysis
All kinds of ion concentrations in liquid 5.When Li+ monitoring concentration is consistently less than the 2% of normal concentration in electrolyte 5, ion concentration monitoring
Unit to 13 feedback signal of management control module, management control module 13 issue control signal make high precision mixed reaction kettle to
A certain amount of LiPF is added in the electrolyte 5 of flowing6, until when the concentration of Li+ restores normal and keeps 3h.
It is recycled equipped with electrolyte and purifies the vast capacity energy storage lithium ion battery of closed-circuit system 8 in charge and discharge cycles
After 3000 circles, electrolyte LiPF in electrolyte 56Content is almost unchanged.
Embodiment 4:
After vast capacity energy storage is recycled 3000 times with lithium ion battery, due to the deintercalation repeatedly of lithium ion, 2 surface of negative plate
Solid-liquid dielectric film is destroyed, can not be repaired in electrolyte 5 with film for additive component (such as vinylene carbonate (VC),
Fluorinated ethylene carbonate (FEC)), if electroless liquid circulation and purification closed-circuit system 8, the quickening of the battery capacity rate of decay (> 5%/
1000 times).
The vast capacity energy storage lithium ion battery with purification closed-circuit system 8 is recycled equipped with electrolyte, electrolyte is in system
In circulate, the monitoring probe discontinuous operation of the number of free radical monitoring unit in monitoring module 9 under normal circumstances, detection electricity
Solve types of functionality concentration of component in liquid 5.When certain function ingredients concentration is lower than given threshold, management control module 13 receives freedom
After the electric signal of base concentration monitor unit, to component regulation module 11 issue control signal, by high precision mixed reaction kettle to
Electrolyte 5 adds suitable function ingredients.After 5 component of electrolyte is restored to normal level, component regulates and controls module 11 and stops work
Make.
Embodiment 5:
Present embodiments provide another lithium ion battery work case recycled using electrolyte with purification closed-circuit system 8
Example.
When environment temperature is 25 DEG C, vast capacity energy storage is in continuous wave high power working condition with lithium ion battery, if nothing
Electrolyte circulation can reach 73 DEG C with purification closed-circuit system 8, internal temperature of battery.
The vast capacity energy storage lithium ion battery with purification closed-circuit system 8 is recycled equipped with electrolyte, it is continuous big when starting
When power works, after the electric signal that the temperature monitoring unit that management control module 13 receives monitoring module 9 issues, to drive module
12 and heat exchange module 10 issue control signal so that 5 flow velocity of system electrolyte inside relative under normal condition increase 3 times of left sides
The right side, 10 power of heat exchange module improve 5 times or so, strengthen heat dissipation, internal temperature of battery is stablized in 31 DEG C.Work as electricity
When normal operating conditions is restored in pond, management control module 13, which lags, restores drive module 12 and heat exchange module 10 just
Normal operating power.
The above is multiple preferred embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of lithium ion battery electrolyte circulation with purification closed-circuit system, the lithium ion battery be provided with battery case,
Positioned at battery case intracorporal spaced multiple negative plates and multiple positive plates, positioned at the adjacent negative plate and positive plate
Between partition and be arranged in the intracorporal electrolyte of the battery case, which is characterized in that electrolyte circulation is closed with purification
Road system is provided with monitoring module, heat exchange module, component regulation module, drive module and management control module, the monitoring
Module, the heat exchange module, component regulation module and the drive module are connected to inside the battery case, and
The monitoring module, the heat exchange module, component regulation module and the drive module are controlled with the management respectively
Module electrical connection；
The monitoring module is used to detect the temperature of electrolyte and the component of electrolyte is constituted, and the heat exchange module is for adjusting
And the temperature of electrolyte is kept, the component regulation module is used to remove the objectionable impurities in electrolyte, maintains in electrolyte
The concentration of all kinds of ions, the drive module is for driving electrolyte in the battery case and electrolyte circulation and purification
It is flowed between closed-circuit system, the management control module is used to receive the information that the monitoring module provides, and analysis assessment is current
Electrolyte situation, and the heat exchange module, component regulation module and the drive are controlled according to the electrolyte situation
Dynamic model block.
2. the electrolyte circulation of lithium ion battery according to claim 1 and purification closed-circuit system, which is characterized in that described
Monitoring module, the heat exchange module, component regulation module and the drive module are sequentially communicated by a connecting line,
The head end of the connecting line is connected to inside the battery case with tail end.
3. the electrolyte circulation of lithium ion battery according to claim 2 and purification closed-circuit system, which is characterized in that described
Monitoring probe is provided in monitoring module, the monitoring probe is located in the connecting line, and the monitoring module includes reference
Electrode, temperature monitoring unit, HF concentration monitor unit, ion concentration monitoring unit, H2O concentration monitor unit and number of free radical
Monitoring unit it is one or more.
4. the electrolyte circulation of lithium ion battery according to claim 2 and purification closed-circuit system, which is characterized in that described
Heat exchanger and resistance wire are provided in heat exchange module, the both ends of the heat exchanger are connected to the connecting line, described
Resistance wire couples setting with the heat exchanger.
5. lithium-ion battery electrolytes circulation according to claim 2 and purification closed-circuit system, which is characterized in that described group
Divide in regulation module and is provided with the one or more of alkalescent adsorption column, active molecular sieve tower and high precision mixed reaction kettle, and
It is connected to the connecting line.
6. lithium-ion battery electrolytes circulation according to claim 2 and purification closed-circuit system, which is characterized in that the drive
Dynamic model block is a liquid pump, and the liquid pump is arranged on the connecting line.
7. lithium-ion battery electrolytes circulation according to claim 2 and purification closed-circuit system, which is characterized in that the company
Adapter tube road is additionally provided with a liquid exchange opening, and the liquid exchange opening is used to replace the electrolyte in whole system, sets in the liquid exchange opening
It is equipped with a valve.
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| CN201910745425.8A CN110311180B (en) | 2019-08-13 | 2019-08-13 | Lithium ion battery electrolyte circulation and purification closed-loop system |
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| CN201910745425.8A CN110311180B (en) | 2019-08-13 | 2019-08-13 | Lithium ion battery electrolyte circulation and purification closed-loop system |
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| CN112599941A (en) * | 2020-12-21 | 2021-04-02 | 常德中科多源电力融合技术研究院 | Electrolyte flowing type lithium ion battery system |
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| CN110311180B (en) | 2021-02-05 |
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